Swing self-reset rigid frame bridge double-limb thin-wall pier

文档序号：1794692 发布日期：2021-11-05 浏览：6次中文

阅读说明：本技术 一种摇摆自复位的刚构桥双肢薄壁墩 (Swing self-reset rigid frame bridge double-limb thin-wall pier ) 是由黎雅乐佘振扬李雪红徐秀丽杨丙文钱声源于 2021-08-06 设计创作，主要内容包括：本发明公开了一种摇摆自复位的刚构桥双肢薄壁墩,属于桥墩技术领域。它包括承台；主梁,其布置于承台正上方；双肢墩,其有两根相互平行的墩柱,用于支撑主梁；双肢墩与承台及主梁接缝处的结构均为摇摆式结构,能在接缝处发生摇摆；还包括,预应力钢筋,其纵向固定于双肢墩的每根墩柱中,预应力钢筋的一端从双肢墩的墩柱端部伸出并穿过接缝处伸入对应承台或主梁中固定；延性钢筋,其设于双肢墩与承台及主梁的接缝处,延性钢筋一端伸入双肢墩墩柱端部固定,另一端伸入对应的承台或主梁中固定。本发明的摇摆墩自复位体系,能适用于高墩大跨连续刚构桥梁,对提高山区高墩大跨桥梁的安全性和防灾能力具有重要意义,且地震损伤可控,震后恢复速度快。(The invention discloses a swinging self-resetting rigid frame bridge double-limb thin-wall pier, and belongs to the technical field of piers. It comprises a bearing platform; a main beam disposed directly above the cushion cap; the double-limb pier is provided with two parallel pier columns and is used for supporting the main beam; the joints of the double-limb pier, the cushion cap and the main beam are all swing structures, and can swing at the joints; the prestressed reinforcement is longitudinally fixed in each pier column of the double-limb pier, and one end of the prestressed reinforcement extends out of the end part of the pier column of the double-limb pier, penetrates through the joint and extends into the corresponding cushion cap or the main beam to be fixed; and one end of the ductile steel bar extends into the end part of the pier column of the double-limb pier to be fixed, and the other end of the ductile steel bar extends into the corresponding cushion cap or the main beam to be fixed. The self-resetting system of the swing pier can be suitable for a high-pier large-span continuous rigid bridge, has important significance for improving the safety and disaster prevention capability of the high-pier large-span bridge in a mountainous area, and is controllable in earthquake damage and high in recovery speed after earthquake.)

1. A swinging self-reset rigid frame bridge double-limb thin-wall pier comprises,

a bearing platform;

a main beam disposed directly above the cushion cap;

the double-limb pier is provided with two parallel pier columns which are vertically arranged on the bearing platform and used for supporting the main beam;

the method is characterized in that:

the joints of the double-limb pier, the cushion cap and the main beam are all swing structures, and can swing at the joints; also comprises the following steps of (1) preparing,

the prestressed reinforcement is longitudinally fixed in each pier stud of the double-limb pier, and one end of the prestressed reinforcement extends out of the end part of the pier stud of the double-limb pier, penetrates through the joint and extends into the corresponding cushion cap or the main beam to be fixed;

and one end of the ductile steel bar extends into the end part of the pier column of the double-limb pier to be fixed, and the other end of the ductile steel bar extends into the corresponding cushion cap or the main beam to be fixed.

2. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 1, wherein: the ductile steel bars are uniformly arranged along the circumferential direction of the end part edge of the double-limb pier stud.

3. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 1, wherein:

the sections of the joints of the double-limb piers and the cushion cap are arc surfaces which are matched with each other;

the sections of the joints of the double-limb piers and the main beam are arc surfaces which are matched with each other;

rubber pads are filled at joints of the double-limb pier, the cushion cap and the main beam.

4. The double-limb thin-wall pier of the rigid frame bridge capable of swinging and resetting automatically according to claim 1, further comprising an energy consumption box arranged between the two piers of the double-limb pier, wherein two ends of the energy consumption box are movably connected with the two piers respectively.

5. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 4, wherein the energy dissipation box comprises:

the box body is of a hollow box type structure;

the damping hinge inserting plate comprises a first steel top plate, a first steel bottom plate and a damping hinge plate, the first steel top plate and the first steel bottom plate are parallel to each other and are respectively inserted into the top surface and the bottom surface of the box body, and the damping hinge plate is connected between the first steel top plate and the first steel bottom plate;

two ends of the damping hinge insertion plate face to the two pier columns of the double-limb pier respectively.

6. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 4, wherein the energy dissipation box comprises:

the box body is of a hollow box type structure;

the profiled steel inserting plate comprises a second steel top plate, a second steel bottom plate and a profiled steel plate, the second steel top plate and the second steel bottom plate are parallel to each other and are respectively inserted into the top surface and the bottom surface of the box body, and the profiled steel plate is in a wave shape and is connected between the second steel top plate and the second steel bottom plate;

two ends of the profiled steel inserting plate face two pier columns of the double-limb pier respectively.

7. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 4, wherein the energy dissipation box comprises:

the box body is of a hollow box type structure;

the profiled steel inserting plate is movably inserted between the top surface and the bottom surface of the box body and arranged between the two damping hinge inserting plates, the profiled steel inserting plate comprises a second steel top plate, a second steel bottom plate and a profiled steel plate, the second steel top plate and the second steel bottom plate are parallel to each other and are respectively inserted on the top surface and the bottom surface of the box body, and the profiled steel plate is in a wave shape and is connected between the second steel top plate and the second steel bottom plate;

and the filler is filled in the gap between the damping hinge inserting plate and the profiled steel inserting plate.

8. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 7, wherein: the side of the profiled steel plate of the profiled steel inserting plate is welded with a stud.

9. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 4, further comprising a corner damper comprising:

the steel base plate is embedded in the side surface of the pier stud of the double-limb pier;

a plurality of first fan-shaped rigid plates are formed on the side surface of the steel base plate, and the first fan-shaped rigid plates are parallel to each other and are arranged at intervals;

the connecting plate is a flat plate, and the edge of the connecting plate is provided with a mounting hole in a penetrating way;

the second fan-shaped rigid plates are formed on the side faces of the connecting plates, the second fan-shaped rigid plates are parallel to each other and are arranged at intervals, and the second fan-shaped rigid plates and the first fan-shaped rigid plates are matched with each other in a staggered mode through intervals;

the two side surfaces of the first fan-shaped rigid plate and the second fan-shaped rigid plate are provided with elastic material layers;

the fasteners clamp the first fan-shaped rigid plates and the second fan-shaped rigid plates;

the pier bottom of the double-limb pier column is provided with a corner damper, and a connecting plate of the corner damper is fixedly connected with the top surface of the bearing platform.

10. A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to claim 9, wherein: the energy dissipation box is movably connected with the pier stud of the double-limb pier through the corner damper, and the connecting plate of the energy dissipation box is connected with the energy dissipation box in the same way.

Technical Field

The invention belongs to the technical field of piers, and particularly relates to a double-limb thin-wall pier of a rigid frame bridge capable of swinging and resetting.

Background

The western mountainous areas of China are mostly in geological plate active zones, and the frequent earthquakes from ancient times can cause huge damage to traffic infrastructure. With the development of traffic infrastructure in western regions, the continuous rigid frame bridge becomes a main bridge type for crossing canyon terrains in western mountainous regions due to the advantages of large crossing capability, strong terrain adaptability, moderate construction cost and the like, and the original records are continuously refreshed due to the fact that the bridge piers of the continuous rigid frame bridge are higher and higher under the limitation of terrains, so that opportunities are brought to the development of the continuous rigid frame bridge, and a new problem is brought to the design and construction of the continuous rigid frame bridge.

If the pier stud height is greater than 40m, girder quality and pier stud self quality all have important influence to its earthquake response, it is unfavorable to the shock attenuation on the contrary if carry out support shock insulation design extension structure overall period, consequently most of the cases because the thought of ductility design carries out the optimal design to the pier stud cross-section of continuous rigid frame bridge, rely on the bending deformation power consumption of pier stud self, nevertheless pier stud damage repair work after the shake is a big difficult problem, pier damage is serious after traditional ductility design shakes, the recovery cycle is long, recoverable cost is great, even if still have the gap with the performance of intact pier stud after the restoration.

Therefore, it is imperative to design a tough pier column suitable for a continuous rigid frame bridge.

Disclosure of Invention

In order to solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a rocking self-resetting rigid frame bridge double-limb thin-walled pier comprising:

a bearing platform;

a main beam disposed directly above the cushion cap;

the double-limb pier is provided with two parallel pier columns which are vertically arranged on the bearing platform and used for supporting the main beam;

the joints of the double-limb pier, the cushion cap and the main beam are all swing structures, and can swing at the joints; also comprises the following steps of (1) preparing,

According to the swinging self-resetting rigid frame bridge double-limb thin-wall pier disclosed by the embodiment of the invention, optionally, a plurality of ductile steel bars are uniformly arranged along the circumferential direction of the end edge of the double-limb pier column.

A rocking self-restoring rigid frame bridge double-limb thin-walled pier according to an embodiment of the invention may, optionally,

the sections of the joints of the double-limb piers and the cushion cap are arc surfaces which are matched with each other;

the sections of the joints of the double-limb piers and the main beam are arc surfaces which are matched with each other;

rubber pads are filled at joints of the double-limb pier, the cushion cap and the main beam.

According to the embodiment of the invention, the swinging self-resetting rigid frame bridge double-limb thin-wall pier optionally further comprises an energy consumption box, wherein the energy consumption box is arranged between two pier columns of the double-limb pier, and two ends of the energy consumption box are respectively movably connected with the two pier columns.

According to the embodiment of the invention, the double-limb thin-wall pier of the swinging self-resetting rigid frame bridge optionally comprises:

the box body is of a hollow box type structure;

two ends of the damping hinge insertion plate face to the two pier columns of the double-limb pier respectively.

According to the embodiment of the invention, the double-limb thin-wall pier of the swinging self-resetting rigid frame bridge optionally comprises:

the box body is of a hollow box type structure;

two ends of the profiled steel inserting plate face two pier columns of the double-limb pier respectively.

According to the embodiment of the invention, the double-limb thin-wall pier of the swinging self-resetting rigid frame bridge optionally comprises:

the box body is of a hollow box type structure;

and the filler is filled in the gap between the damping hinge inserting plate and the profiled steel inserting plate.

According to the swinging self-resetting rigid frame bridge double-limb thin-wall pier disclosed by the embodiment of the invention, optionally, a stud is welded on the side surface of the profiled steel sheet of the profiled steel inserting plate.

The double-limb thin-wall pier of the swinging self-resetting rigid frame bridge according to the embodiment of the invention optionally further comprises a corner damper, which comprises:

the steel base plate is embedded in the side surface of the pier stud of the double-limb pier;

a plurality of first fan-shaped rigid plates are formed on the side surface of the steel base plate, and the first fan-shaped rigid plates are parallel to each other and are arranged at intervals;

the connecting plate is a flat plate, and the edge of the connecting plate is provided with a mounting hole in a penetrating way;

the two side surfaces of the first fan-shaped rigid plate and the second fan-shaped rigid plate are provided with elastic material layers;

the fasteners clamp the first fan-shaped rigid plates and the second fan-shaped rigid plates;

the pier bottom of the double-limb pier column is provided with a corner damper, and a connecting plate of the corner damper is fixedly connected with the top surface of the bearing platform.

According to the swinging self-resetting rigid frame bridge double-limb thin-wall pier disclosed by the embodiment of the invention, optionally, the energy consumption box is movably connected with the pier column of the double-limb pier through the corner damper, and the connecting plate of the energy consumption box is connected with the energy consumption box in the same way.

Advantageous effects

Compared with the prior art, the invention at least has the following beneficial effects:

(1) the swinging self-resetting rigid frame bridge double-limb thin-wall pier has the advantages that joints of each pier column, the bearing platform and the main beam of the double-limb pier are in a swinging structure form, the swinging pier with double interfaces is formed, the double-limb pier is connected with the bearing platform and the main beam through the prestressed steel bars, the integrity of the pier structure is improved, the integral stability of the pier during the construction of the upper structure of the pier is ensured, the linear elasticity characteristic of the prestressed steel bars is utilized, the prestressed steel bars can generate restoring force to restore to the initial position after the transverse earthquake load action is ensured, meanwhile, the transverse stability of the pier is not lost, the ductile steel bars are arranged, on one hand, the local relative sliding of each contact interface at the joints is prevented, on the other hand, the pier column interface is ensured to have enough ductility capacity, and the swinging pier self-resetting system formed by the method can be suitable for high-pier large-span continuous bridges and has important significance for improving the safety and disaster prevention capacity of the high-pier large-span bridges in mountainous areas, the structure of the invention has controllable earthquake damage and high recovery speed after earthquake;

(2) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, the cushion cap, the main beam and the double-limb pier are all in a prefabricated form and are matched with the connection structure of the prestressed steel bars and the ductile steel bars, so that the construction can be conveniently and quickly carried out, the construction progress can be greatly accelerated, and the construction risk in dangerous areas such as mountainous areas and the like can be effectively reduced;

(3) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, the arc-shaped surfaces which are matched with each other are arranged on the interface at the joint to form a swinging structure, and the rubber pad is filled between the interfaces at the joint, so that on one hand, the swinging interface is matched with the swinging interface in a cooperative manner to increase the damping and energy consumption effects, on the other hand, the problem of collision and crushing of concrete at the edge of the interface can be relieved, and the effective service life of the bridge is prolonged;

(4) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, the energy consumption box is arranged between the pier columns of the double-limb pier, and can be sheared and deformed when the double-limb pier generates longitudinal swinging motion, so that most of earthquake energy input to the pier can be absorbed, the earthquake energy becomes a fuse under heavy earthquake, and the earthquake resistance of the bridge is further improved;

(5) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, the energy dissipation box has multiple structural forms, the energy dissipation box provided with the damping hinge inserting plate can meet the energy dissipation requirements of most of use environments, the energy dissipation box provided with the profiled steel inserting plate is low in cost and suitable for use environments with low energy dissipation requirements, and the energy dissipation box provided with the damping hinge inserting plate matched with the profiled steel inserting plate and matched with fillers is strong in energy dissipation effect and suitable for use environments with high energy dissipation requirements;

(6) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, aiming at the energy dissipation box structure that a damping hinge inserting plate is matched with a profiled steel inserting plate and a filler, studs are welded on two side surfaces of a middle profiled steel plate, so that the extrusion with the filler can be increased, the damping is improved, and the energy dissipation effect is further enhanced;

(7) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, the corner damper is arranged at the bottom of the double-limb pier, so that the rotating energy consumption can be generated at the node of the pier column and the bearing platform when the pier column swings longitudinally;

(8) according to the swinging self-resetting rigid frame bridge double-limb thin-wall pier, the energy consumption box is connected with the double-limb pier column through the corner damper, the rotating energy consumption and the shearing energy consumption can be matched with each other under the earthquake action to fully play the energy consumption role, and the energy consumption box can be conveniently and quickly replaced after the earthquake occurs.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

FIG. 1 shows a schematic view of a double-limb thin-walled pier of a swinging self-restoring rigid frame bridge of the present invention;

FIG. 2 shows a schematic A-A cross-section;

FIG. 3 shows a schematic cross-sectional B-B view;

FIG. 4 shows a schematic view of the present invention in a state when the swinging self-restoring rigid frame bridge double-limb thin-wall pier swings;

FIG. 5 shows a schematic view of the structure of the energy dissipation box of the present invention;

FIG. 6 shows a schematic view of the corner damper configuration of the present invention;

FIG. 7 is a schematic view of another perspective of the corner damper of the present invention;

FIG. 8 is a schematic view of the energy dissipation box of the present invention;

FIG. 9 shows a schematic view of the damped hinge insert plate structure of the present invention;

FIG. 10 shows a schematic view of the structure of a profiled steel insert plate according to the invention;

reference numerals:

1. a bearing platform;

2. a main beam;

3. two-limb pier;

4. pre-stressing the steel bars; 40. a fitting type joint;

5. a ductile steel bar;

6. an energy consumption box; 60. a box body; 61. a damping hinge inserting plate; 610. a first steel top plate; 611. a first steel bottom plate; 612. a damping hinge plate; 62. a profiled steel flashboard; 620. a second steel top plate; 621. a second steel bottom plate; 622. profiled steel sheets; 623. a stud; 63. a filler;

7. a corner damper; 70. a steel backing plate; 71. a fan-shaped rigid plate I; 72. a connecting plate; 73. a second fan-shaped rigid plate; 74. a layer of elastomeric material; 75. a fastener;

100. and (6) at the seam.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "a," "an," "two," and similar referents in the description and claims of this patent application does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another.

Through research, the existing swing type bridge pier mainly has the following defects:

firstly, the structural details of the swing pier are not mature, the arrangement mode of the energy dissipation assembly is single, so that the anti-seismic effect is very limited, and the assembly and the connecting joint with more excellent comprehensive performance are urgently to be developed;

secondly, the swing type bridge pier is mainly provided with a low pier stud and cannot be suitable for a high pier structure, and the actual requirements of large displacement and large rotation of the high pier structure cannot be met through the conversion of the existing swing type bridge pier structure;

and thirdly, most of the swing type piers are integrally or sectionally precast concrete single-column piers, and cannot be suitable for double-limb thin-wall piers.

Aiming at the problems, the invention designs the double-limb thin-wall pier of the rigid frame bridge capable of swinging and resetting, and can solve the problems of serious damage, long recovery period, high recovery cost and the like of the pier of the high-pier long-span continuous rigid frame bridge after an earthquake.

Example 1

The rigid frame bridge double-limb thin-wall pier capable of swinging and resetting comprises:

a bearing platform 1;

a main beam 2 arranged right above the bearing platform 1;

the double-limb pier 3 is provided with two parallel pier columns which are vertically arranged on the bearing platform 1 and used for supporting the main beam 2;

the structure of the joint 100 of the double-limb pier 3, the cushion cap 1 and the main beam 2 is a swing structure, and the joint 100 can swing; also comprises the following steps of (1) preparing,

the prestressed reinforcement 4 is longitudinally fixed in each pier stud of the double-limb pier 3, and one end of the prestressed reinforcement 4 extends out of the end part of the pier stud of the double-limb pier 3, penetrates through the joint 100 and extends into the corresponding cushion cap 1 or the main beam 2 for fixing;

and the ductile steel bars 5 are arranged at the joints 100 of the double-limb pier 3, the cushion cap 1 and the main beam 2, one end of each ductile steel bar 5 extends into the pier stud end of the double-limb pier 3 for fixing, and the other end of each ductile steel bar 5 extends into the corresponding cushion cap 1 or the corresponding main beam 2 for fixing.

As shown in fig. 1, 2 and 3, in this embodiment, the platform 1, the main beam 2 and the double-limb pier 3 are all in a prefabricated form, the double-limb pier 3 is composed of two parallel piers which are all arranged longitudinally, the joint 100 of each pier, the platform 1 and the main beam 2 is in a swinging structure form, which can swing and rotate to a certain extent at the joint, thereby forming a swinging pier with double interfaces, furthermore, a prestressed channel is reserved longitudinally at the center of the cross section of each pier of the double-limb pier 3, a prestressed steel bar 4 is arranged in the prestressed channel, and one end of the prestressed steel bar 4 extends out from the end of the pier, passes through the joint 100 and extends into the platform 1 or the main beam 2 corresponding to the pier to be fixed, in this embodiment, four prestressed steel bars 4 are respectively arranged at each end of each pier, the end of each prestressed steel bar 4 is anchored in the corresponding pier or platform 1 or main beam 2 by using an embedded joint 40, the original separately prefabricated pier column is connected with the bearing platform 1 and the main beam 2 in a clamping mode through the prestressed reinforcement 4, the integrity of the pier structure is improved, the integral stability of the pier is guaranteed during construction of the upper portion structure of the pier, and the restoring force characteristic of the prestressed reinforcement 4 guarantees that after the transverse earthquake load action, the prestressed reinforcement 4 can generate restoring force to restore to the initial position, and meanwhile, the transverse stability of the pier is not lost; further, this embodiment still is equipped with ductile reinforcing bar 5, and ductile reinforcing bar 5 arranges in each seam crossing 100, and one end embedding pier stud end internal fixation, and the other end embedding is corresponding cushion cap 1 or girder 2 internal fixation, through ductile reinforcing bar 5, can prevent that each contact surface of seam crossing 100 from taking place local relative slip, has guaranteed simultaneously that the pier stud interface has sufficient ductility ability of wasting energy, under the cooperation of ductile reinforcing bar 5 and prestressing steel 4, has constituted the self-resetting system of rocking pier.

The two limb thin wall mounds of rigid frame bridge from restoring to throne of swaing of this embodiment, when the earthquake action is less, rely on 5 power consumptions of ductility reinforcing bar, and because prestressing steel 4's pre-compaction effect, the pier can not take place to rock by a wide margin, only can take place the small amplitude and sway and can get back to the initial position, the bridge resists the earthquake through self intensity this moment, when the earthquake action is great, the pier can be at cushion cap 1, 2 seam crossing 100 of girder take place rocking of certain degree, the pier becomes gentle this moment, the rigidity of pier reduces, the self-oscillation cycle increase of structure, avoid the excellent cycle of earthquake from this, the pier can be with the help of prestressing steel 4 after taking place to sway the initial position of automatic reply, the structural earthquake damage of this embodiment is controllable, after-shock recovery rate is fast, and convenient for construction.

Example 2

The swinging self-resetting rigid frame bridge double-limb thin-wall pier of the embodiment is further improved on the basis of the embodiment 1, and a plurality of ductile steel bars 5 are uniformly arranged along the periphery of the end part of the pier column of the double-limb pier 3.

As shown in fig. 1, the seam 100 corresponding to the end of each pier stud in this embodiment is provided with a plurality of ductile steel bars 5, and the ductile steel bars 5 are arranged at the edge of the end of the pier stud and are uniformly arranged along the circumference of the end of the pier stud, so as to further enhance the limiting effect and enhance the ductility energy consumption capability of the double-limb pier 3.

Example 3

The double-limb thin-wall pier of the swinging self-resetting rigid frame bridge is further improved on the basis of the embodiment 2, and the cross sections of the joint 100 of the double-limb pier 3 and the cushion cap 1 are arc surfaces which are matched with each other;

the sections of the joints 100 of the double-limb piers 3 and the main beam 2 are arc surfaces which are matched with each other;

rubber pads are filled in joints 100 of the double-limb pier 3, the cushion cap 1 and the main beam 2.

As shown in fig. 1 and fig. 2, in this embodiment, the swing structure is implemented by setting the cross section of each pier column 3 of the double-limb pier 100 at the joint 100 and the cross section of the corresponding positions of the cushion cap 1 and the main beam 2 at the joint 100 as arc surfaces that are mutually matched, more specifically, in this embodiment, the bottom end surface of each pier column is a downward convex arc surface, the top surface of the cushion cap 1 is a downward concave arc surface that is matched with the joint 100, the top end surface of each pier column is an upward convex arc surface, and the bottom surface of the main beam 2 is a upward concave arc surface that is matched with the joint 100, further, an elastic rubber pad is filled between two adjacent arc surfaces at the joint 100, so that on one hand, the elastic rubber pad is cooperatively matched with the swing interface to increase the damping and energy consumption effects, on the other hand, the problem of collision and crushing of concrete at the edge of the interface can be alleviated, and the effective service life of the bridge of the present invention is prolonged.

Example 4

The swing self-resetting rigid frame bridge double-limb thin-wall pier of the embodiment is further improved on the basis of the embodiment 3, and further comprises an energy consumption box 6, wherein the energy consumption box 6 is arranged between two pier studs of the double-limb pier 3, and two ends of the energy consumption box 6 are movably connected with the two pier studs respectively.

In order to further dissipate earthquake energy, in the embodiment, the energy dissipation box 6 is arranged between the two pier columns of the double-limb pier 3, as shown in fig. 1 and 5, when the double-limb pier 3 longitudinally swings under the action of an earthquake, a corner is formed at the joint of the pier column and the energy dissipation box 6, and the energy dissipation box 6 is sheared and deformed, so that most of earthquake energy input to the pier can be absorbed to become a fuse under the heavy earthquake, the energy dissipation function can be preferentially exerted under the strong earthquake, the built-in ductile steel bars 5 and the bearing assembly are protected from being damaged or slightly damaged, the energy dissipation box 6 is convenient to replace after being damaged, and the restorability after the earthquake is strong, so that the earthquake resistance of the bridge is further improved.

The energy consumption box 6 of the present embodiment has various structural forms.

Example 5

The double-limb thin-wall pier of the swinging self-resetting rigid frame bridge is further improved on the basis of the embodiment 4, and the energy consumption box 6 comprises:

a case 60 having a hollow box structure;

the damping hinge inserting plate 61 is provided with at least one damping hinge inserting plate, the damping hinge inserting plate is movably inserted between the top surface and the bottom surface of the box body 60, the damping hinge inserting plate 61 comprises a first steel top plate 610, a first steel bottom plate 611 and a damping hinge plate 612, the first steel top plate 610 and the first steel bottom plate 611 are parallel to each other and are respectively inserted between the top surface and the bottom surface of the box body 60, and the damping hinge plate 612 is connected between the first steel top plate 610 and the first steel bottom plate 611;

the damping hinge insert 61 has two ends facing the two pillars of the double-limb pier 3.

The present embodiment shows a form of construction of the energy consumption box 6.

A plurality of slots are formed at corresponding positions of the top surface and the bottom surface of the box body 60, two ends of the slots in the length direction point to the two pier studs respectively, the damping hinge insertion plate 61 is movably inserted into the slots in the box body 60 in a matched mode, and the damping hinge insertion plate 61 can be detached and replaced.

In the damping hinge inserting plate 61 of the present embodiment, as shown in fig. 9, the damping hinge plate 612 is fixed between the first steel top plate 610 and the first steel bottom plate 611 in a hinged manner, the first steel top plate 610 and the first steel bottom plate 611 are inserted into the slots of the box 60 in a matching manner, the damping hinge plate 612 has various hinge configurations, and in fig. 9, the damping hinge plate is an M-shaped hinge plate, and can be configured as an X-shaped hinge plate, a K-shaped hinge plate, and the like.

When the energy consumption box 6 is sheared and deformed, the first steel top plate 610 and the first steel bottom plate 611 in the damping hinge insertion plate 61 are relatively displaced to drive the hinge of the damping hinge plate 612 to deform, and the damping hinge generates damping when deforming to buffer, so that energy is quickly consumed.

The energy consumption box 6 of the embodiment can meet the energy consumption requirements of most use environments.

Example 6

The double-limb thin-wall pier of the swinging self-resetting rigid frame bridge is further improved on the basis of the embodiment 4, and the energy consumption box 6 comprises:

a case 60 having a hollow box structure;

the profiled steel inserting plates 62 are movably inserted between the top surface and the bottom surface of the box body 60, each profiled steel inserting plate 62 comprises a second steel top plate 620, a second steel bottom plate 621 and a profiled steel plate 622, the second steel top plate 620 and the second steel bottom plate 621 are parallel to each other and are respectively inserted into the top surface and the bottom surface of the box body 60, and the profiled steel plates 622 are in a wave shape and are connected between the second steel top plate 620 and the second steel bottom plate 621;

the two ends of the profiled steel inserting plate 62 face two pillars of the double-limb pier 3 respectively.

The present embodiment shows another form of the energy consumption box 6.

A plurality of slots are formed at corresponding positions of the top surface and the bottom surface of the box body 60, two ends of each slot in the length direction point to the two pier studs respectively, the profiled steel inserting plate 62 is movably inserted into the slots in the box body 60 in a matched mode, and the profiled steel inserting plate 62 can be detached and replaced.

As shown in fig. 10, in the profiled steel insert plate 62 of this embodiment, a profiled steel sheet 622 is fixed between the second steel top plate 620 and the second steel bottom plate 621 in a welded manner, the second steel top plate 620 and the second steel bottom plate 621 are inserted into the slots of the box body 60 in a matching manner, and the profiled steel sheet 622 is in a wave shape, and can exert an energy dissipation effect when undergoing plastic deformation, and can be easily replaced later.

When the energy dissipation box 6 is subjected to shear deformation, the second steel top plate 620 and the second steel bottom plate 621 in the profiled steel inserting plate 62 are subjected to relative displacement, so that the profiled steel plate 622 is driven to be subjected to plastic deformation, and deformation energy dissipation is generated.

The energy consumption box 6 of the embodiment has low structural form cost and is suitable for a use environment with low energy consumption requirement.

Example 7

The double-limb thin-wall pier of the swinging self-resetting rigid frame bridge is further improved on the basis of the embodiment 4, and the energy consumption box 6 comprises:

a case 60 having a hollow box structure;

the damping hinge inserting plates 61 are arranged in parallel, two ends of each damping hinge inserting plate 61 respectively face two piers of the double-limb pier 3, the damping hinge inserting plates 61 are movably inserted between the top surface and the bottom surface of the box body 60, each damping hinge inserting plate 61 comprises a first steel top plate 610, a first steel bottom plate 611 and a damping hinge plate 612, the first steel top plate 610 and the first steel bottom plate 611 are parallel to each other and are respectively inserted between the top surface and the bottom surface of the box body 60, and the damping hinge plates 612 are connected between the first steel top plate 610 and the first steel bottom plate 611;

the profiled steel inserting plates 62 are movably inserted between the top surface and the bottom surface of the box body 60, the profiled steel inserting plates 62 are arranged between the two damping hinge inserting plates 61, each profiled steel inserting plate 62 comprises a second steel top plate 620, a second steel bottom plate 621 and a profiled steel plate 622, the second steel top plate 620 and the second steel bottom plate 621 are parallel to each other and are respectively inserted between the top surface and the bottom surface of the box body 60, and the profiled steel plate 622 is in a waveform shape and is connected between the second steel top plate 620 and the second steel bottom plate 621;

and the filler 63 is filled in the gap between the damping hinge inserting plate 61 and the profiled steel inserting plate 62.

The present embodiment shows another structure of the energy consumption box 6, as shown in fig. 8.

Three slots are formed at corresponding positions of the top surface and the bottom surface of the box body 60, two ends of each slot in the length direction point to two pier studs respectively, the middle slot is used for being plugged with a profiled steel inserting plate 62, and the slots at two sides are used for being plugged with a damping hinge inserting plate 61.

In this embodiment, the filler 63 is filled between the insert plates, more specifically, the polyurethane foam is used as the filler 63 in this embodiment, which has a good buffering effect, when the box body 60 of the energy dissipation box 6 is shear-deformed, the damping hinge insert plate 61 and the profiled steel insert plate 62 are both deformed to dissipate energy, and the side surface of the deformed profiled steel plate 622 and the chain bar of the damping hinge plate 612 press the polyurethane foam filler 63, so that the filler 63 also fully exerts the energy dissipation effect.

The energy consumption box 6 of the embodiment is suitable for a use environment with high energy consumption requirements.

Example 8

The double-limb thin-wall pier of the rigid frame bridge capable of swinging and self-resetting in the embodiment is further improved on the basis of the embodiment 7, and the side surface of the profiled steel sheet 622 of the profiled steel inserting plate 62 is welded with the stud 623.

As shown in fig. 10, the studs 623 are welded to both sides of the profiled steel sheet 622 to increase the compression with the filler 63 and improve the damping.

Since the profiled steel insert plate 62 is located between the two damping hinge insert plates 61, as shown in fig. 8, the studs 623 are welded on the two sides of the profiled steel plate 622, and when the energy dissipation box 6 is deformed, the filler 63 between the two damping hinge insert plates 61 and the profiled steel insert plate 62 is fully extruded, so that the energy dissipation effect is further enhanced.

Example 9

The swing self-resetting rigid frame bridge double-limb thin-wall pier of the embodiment is further improved on the basis of the embodiment 8, and further comprises a corner damper 7, wherein the corner damper comprises:

the steel base plate 70 is embedded in the side surface of the pier stud of the double-limb pier 3;

a plurality of first fan-shaped rigid plates 71 are formed on the side surface of the steel backing plate 70, and the plurality of first fan-shaped rigid plates 71 are parallel to each other and are arranged at intervals;

the connecting plate 72 is a flat plate, and mounting holes are formed in the edge of the connecting plate in a penetrating mode;

the second fan-shaped rigid plates 73 are formed on the side surfaces of the connecting plates 72, the second fan-shaped rigid plates 73 are parallel to each other and are arranged at intervals, and the second fan-shaped rigid plates 73 and the first fan-shaped rigid plates 71 are matched with each other in a staggered mode through the intervals;

the elastic material layer 74 is arranged on two side surfaces of the first fan-shaped rigid plate 71 and the second fan-shaped rigid plate 73;

fasteners 75 for clamping each first fan-shaped rigid plate 71 and each second fan-shaped rigid plate 73;

the bottom of the pier column of the double-limb pier 3 is provided with a corner damper 7, and a connecting plate 72 of the corner damper is fixedly connected with the top surface of the bearing platform 1.

As shown in fig. 6 and 7, the corner damper 7 of the present embodiment has one end fixed to the side of the pier stud of the double-limb pier 3 through a pre-embedded steel base plate 70, and a mounting hole is formed at the edge of the connecting plate 72 at the other end, so that the connecting plate 72 can be mounted at a corresponding position through a bolt connection structure, and the bolt structure can be detached as required.

In the embodiment, the corner damper 7 is arranged at the bottom of the pier stud of the double-limb pier 3, the connecting plate 72 of the corner damper 7 is fixedly connected with the top surface of the bearing platform 1 at the bottom of the pier, when the pier stud longitudinally swings under the action of an earthquake, a corner is generated at the joint of the pier stud and the bearing platform 1, so that the first fan-shaped rigid plate 71 and the second fan-shaped rigid plate 73 relatively rotate, and as the first fan-shaped rigid plate 71 and the second fan-shaped rigid plate 73 are clamped, the elastic material layers 74 on the two side surfaces of the first fan-shaped rigid plate 71 and the second fan-shaped rigid plate 73 mutually press and rub, and the corner damper 7 consumes energy in rotation.

Example 10

The double-limb thin-wall pier of the rigid frame bridge capable of swinging and resetting in the embodiment is further improved on the basis of the embodiment 9, the energy consumption box 6 is movably connected with the pier stud of the double-limb pier 3 through the corner damper 7, and the connecting plate 72 of the energy consumption box is connected with the energy consumption box 6 in the same way.

As shown in fig. 5, in this embodiment, a steel base plate 70 is embedded in the side surface of the pier stud of the double-limb pier 3 corresponding to the joint of the energy dissipation box 6, and the connecting plate 72 of the corner damper 7 is connected to the top surface and the bottom surface of the box body 60 of the energy dissipation box 6 through a bolt structure, so that when a corner is generated at the joint of the pier stud and the energy dissipation box 6, the corner damper 7 rotates to dissipate energy, and cooperates with the energy dissipation box 6 to dissipate energy in a shearing manner, thereby fully playing an energy dissipation role, absorbing most of the seismic energy input to the pier, and based on the structural characteristics of the corner damper 7, the energy dissipation box 6 can be replaced quickly and conveniently after an earthquake occurs.

Further, under the action of an earthquake, if the bridge structure system is a conventional non-swing double-pier structure, the energy consumption box 6 is arranged between the two pier columns, at the moment, the corner displacement between the energy consumption box 6 and the pier columns is theta, the shearing deformation of the energy consumption box 6 is longitudinal unidirectional shearing deformation, and when the structure system is the swing self-reset rigid frame bridge double-limb thin-wall pier structure system of the embodiment, the angular displacement between the energy consumption box 6 and the pier columns is (theta + epsilon), and the shearing deformation of the energy consumption box 6 is longitudinal and vertical bidirectional shearing deformation; therefore, the corner between the energy dissipation box 6 and the pier body between the double-limb piers 3 is increased under the structure of the embodiment, the corner damper 7 can better exert the energy dissipation effect, the energy dissipation box 6 is lighter than a traditional concrete tie beam and is convenient to replace and connect, the energy dissipation performance is better than that of an I-shaped steel tie beam, the shearing displacement of the pier is longitudinal and vertical, and the shearing resistance of the pier can be fully exerted for energy dissipation.

According to the double-limb thin-wall pier of the swinging self-resetting rigid frame bridge, when the earthquake action is small, energy is consumed by virtue of the ductile steel bars 5, and due to the pre-pressing action of the prestressed steel bars 4, the pier cannot swing or only swings in a small amplitude and can return to the initial position, and at the moment, the bridge resists the earthquake through the self strength; when the earthquake action is larger, the bridge pier can swing to a certain degree at the joint 100 of the bearing platform 1 and the main beam 2, as shown in figure 4, at the moment, the bridge pier becomes flexible, the rigidity of the bridge pier is reduced, the self-vibration period of the structure is increased, so that the excellent period of earthquake motion is avoided, meanwhile, the double-limb pier 3 does longitudinal swing motion, at the moment, the pier column and the energy consumption box 6 generate a corner at the node, the corner damper 7 rotates to consume energy, the energy consumption box 6 shears to deform and consume energy, the two displacement dampers can work in cooperation under the earthquake action to play the role of an energy consumption assembly, can absorb most of earthquake energy input to the bridge pier, and can be replaced rapidly after the earthquake to become an energy consumption fuse under the large earthquake, in addition, rubber pads are additionally arranged on the joint section of the pier body and the bearing platform 1 and the joint section of the pier body and the main beam 2 to perform a buffering and damping design, and the overall damping design of a novel swing is completed in cooperation with the swing design, the pier can automatically recover to the initial position after swinging by means of the prestressed reinforcement 4 after the earthquake, the swinging self-resetting rigid frame bridge double-limb thin-wall pier system has the advantages of controllable earthquake damage and quick recovery of functions after strong earthquake, and the energy-consuming tie beam has clear stress mechanism, is convenient to design, install and disassemble.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

19页详细技术资料下载

上一篇：一种医用注射器针头装配设备

下一篇：一种减震桥梁支座

Swing self-reset rigid frame bridge double-limb thin-wall pier

相关技术

网友询问留言