阅读说明：本技术 减震桥板结构 (Shock-absorbing bridge plate structure ) 是由 朱奎 于 2020-07-13 设计创作，主要内容包括：本发明公开了一种减震桥板结构,其特征包括：减震桥板本体,其底部设置有多个连接的混凝土纵向梁和混凝土横向梁,每一个混凝土纵向梁上沿其长度方向均贯通有减震结构通道；每一个减震结构通道中均具有占其容积1/3的水；线圈安装于减震结构通道处,且其至少部分与水位置对应；减震桥板本体上部对应混凝土纵向梁附近预埋有吊环,力传递机构设置于变形缝处,且与吊环铰接,并在车辆运行时产生力的作用下滑动,触发反馈装置；反馈装置对应力传递机构处设置,其触发后接通与其连接的电源,电源接通与线圈电路,并使其产生电磁力,电磁力使水产生流动,耗散车辆运动产生的震动能。解决弹簧结构因超过其疲劳极限导致减震装置失效的问题。(The invention discloses a damping bridge plate structure, which is characterized by comprising the following components: the damping bridge deck comprises a damping bridge deck body, wherein the bottom of the damping bridge deck body is provided with a plurality of connected concrete longitudinal beams and concrete transverse beams, and a damping structure channel penetrates through each concrete longitudinal beam along the length direction of the concrete longitudinal beam; each shock absorbing structure passage has water therein occupying a volume 1/3 thereof; the coil is arranged at the passage of the shock absorption structure, and at least part of the coil corresponds to the water position; a lifting ring is pre-embedded in the upper part of the damping bridge plate body corresponding to the position near the concrete longitudinal beam, and the force transmission mechanism is arranged at a deformation joint, is hinged with the lifting ring, slides under the action of force generated when a vehicle runs and triggers the feedback device; the feedback device is arranged at the stress transfer mechanism, and is switched on after being triggered, the power supply is connected with the coil circuit and generates electromagnetic force, and the electromagnetic force enables water to flow and dissipates vibration energy generated by vehicle motion. The problem of spring structure because of exceeding its fatigue limit and leading to damping device inefficacy is solved.)

1. Shock attenuation bridge plate structure, its characterized in that includes:

the damping bridge plate comprises a damping bridge plate body (100), wherein the bottom of the damping bridge plate body (100) is provided with a plurality of connected concrete longitudinal beams (200) and concrete transverse beams (300), and a damping structure channel (400) penetrates through each concrete longitudinal beam (200) along the length direction of the concrete longitudinal beam; each of the shock absorbing structure passages (400) having water therein occupying a volume 1/3 thereof;

a coil (500), the coil (500) being mounted at the shock absorbing structure channel (400) and at least partially corresponding to the water position;

the upper part of the damping bridge plate body (100) is embedded with a hanging ring (101) corresponding to the position close to the concrete longitudinal beam (200), the force transmission mechanism (600) is arranged at a deformation joint and is hinged with the hanging ring (101), and the force transmission mechanism slides under the action of force generated when a vehicle runs to trigger the feedback device (700);

the feedback device (700) is arranged corresponding to the force transmission mechanism (600), and is connected with a power supply (800) connected with the force transmission mechanism after being triggered, the power supply (800) is connected with a circuit of the coil (500) and enables the coil (500) to generate electromagnetic force, and the electromagnetic force enables the water to flow and dissipates vibration energy generated by vehicle motion.

2. The shock-absorbing deck structure according to claim 1, wherein said concrete longitudinal beams (200) are in two groups, symmetrically arranged corresponding to the left and right lanes; the first group of the concrete longitudinal beams (200) are arranged at the positions which are respectively 450mm away from the center of the roadway and 500mm away from the center of the roadway in the straight line direction; the second group of the concrete longitudinal beams (200) are far away from the center of the roadway.

Technical Field

The invention relates to the technical field of bridge plate shock absorption, in particular to a shock absorption bridge plate structure.

Background

The automobile runs on the bridge plate, can produce great vibrations load during the travel, and the structure appears destroying easily under great vibrations load in the bridge plate, and the domestic and foreign because the bridge plate vibrations problem leads to the accident to take place occasionally, because serious overload produces resonance when the vehicle passes through like the overpass, leads to the bridge to collapse. At present, those skilled in the art have studied on bridge deck damping, for example, a spring structure is introduced in the prior art, and the spring structure plays a role in damping. However, the springs have a fatigue effect and break when the number of actions exceeds their own fatigue, resulting in failure of the damping means. Therefore, how to provide a structure for solving the shock absorption of the bridge plate is a problem that needs to be solved urgently by those skilled in the art.

Disclosure of Invention

Therefore, the invention aims to provide a damping bridge plate structure, which solves the problem that damping springs are easy to damage due to self fatigue, so that bridge plate damping facilities are failed.

The invention provides a damping bridge plate structure, comprising:

the damping bridge slab comprises a damping bridge slab body, wherein the bottom of the damping bridge slab body is provided with a plurality of connected concrete longitudinal beams and concrete transverse beams, and a damping structure channel penetrates through each concrete longitudinal beam along the length direction of the concrete longitudinal beam; each shock absorbing structure passage has water therein occupying a volume 1/3 thereof;

the coil is arranged at the position of the damping structure channel, and at least part of the coil corresponds to the position of water;

the upper part of the damping bridge plate body is embedded with a hanging ring corresponding to the position near the concrete longitudinal beam, and the force transmission mechanism is arranged at a deformation joint, is hinged with the hanging ring, slides under the action of force generated when a vehicle runs and triggers the feedback device;

the feedback device is arranged at the stress transfer mechanism, and is switched on after being triggered, the power supply is connected with the coil circuit and generates electromagnetic force, and the electromagnetic force enables water to flow and dissipates vibration energy generated by vehicle motion.

According to the technical scheme, compared with the prior art, when a vehicle runs on the bridge plate, vibration generated by the bridge plate is transmitted to the feedback device through the force transmission mechanism, the feedback device is triggered and then connected with a power supply connected with the feedback device, the power supply is connected with the coil circuit, the electromagnetic force is generated, water in a channel of the damping structure flows through the electromagnetic force, and vibration energy generated by vehicle motion is dissipated, so that the problem that the damping device fails due to the fact that a spring structure is adopted is solved, and a relatively stable alternative scheme is provided.

Furthermore, the two groups of concrete longitudinal beams are symmetrically arranged corresponding to the left lane and the right lane; the first group of concrete longitudinal beams are arranged at the positions, where the distances between the directions of the straight lines of the first group of concrete longitudinal beams and the center of the roadway are 450-500 mm; the second group of concrete longitudinal beams are far away from the center of the roadway. Therefore, the vibration generated by the running of the vehicle on the left lane and the right lane can be conveniently and simultaneously detected.

Furthermore, inclined radial ribs are arranged at the positions, corresponding to the shock absorption structure channels, of the first group of concrete longitudinal beams. The first group of concrete longitudinal beams are two groups of concrete longitudinal beams close to the center of the roadway, three radial ribs are arranged on the corresponding shock absorption structure channel, the diameter of each radial rib is 22-25mm, the placing angle of each radial hole is 45 degrees, the distance between every two adjacent radial ribs is 50-100mm, and the radial ribs can effectively reduce the stress concentration phenomenon of the middle shock absorption structure channel.

Furthermore, a saddle-shaped sleeve is arranged in the damping bridge plate body, a prestressed reinforcing rib is arranged in the saddle-shaped sleeve, two ends of the prestressed reinforcing rib are fixed through an anchorage device, and the curvature of the prestressed reinforcing rib is consistent with that of the saddle-shaped sleeve; the bending arrangement of the prestressed reinforcing ribs is consistent with the bending moment distribution of the damping bridge plate body; therefore, the bridge plate has great advantages in the aspect of bearing force, and the prestressed reinforcement participates in bearing in advance when the damping bridge plate body vibrates.

Wherein, shock-absorbing structure passageway both ends are confined, and the water injection hole is reserved to the below 150 ~ 200mm position of shock-absorbing structure passageway, and water injection hole diameter is 40 ~ 50mm, can inject water or draw water according to the condition.

Further, the prestress tensioning process of the prestress reinforcing rib is determined according to bridge abutment vibration test data, and specifically comprises the following steps: prestress is applied to the steel bars for the first time, wherein the prestress is 30% of the control stress, and the application time is 10 min; prestress is applied to the steel bars for the second time, wherein the prestress is 40% of the control stress, and the application time is 10 min; prestress is applied to the reinforcing steel bar for the third time, wherein the prestress is 105% of the control stress; fixing the prestressed reinforcement by using an anchorage device after the prestressed reinforcement tensioning control is finished; epoxy resin is injected into gaps among the steel bar pre-buried holes.

Furthermore, the damping structure channel is a prefabricated pipe, the coil is arranged in the prefabricated pipe, and the inner side of the coil is provided with a protective sleeve;

or the damping structure channel is cast in situ by adopting an aluminum mould, and the coil is wound on the outer side of the aluminum mould.

Wherein, the damping structure channel is a prefabricated pipe, and the wall thickness of the prefabricated pipe is 10-12 mm. The shock-absorbing structure channel is formed by pouring aluminum mould cast-in-place concrete, the thickness of the aluminum mould is 10-12mm, a coil is wound on the outer side of the aluminum mould, a triangular support frame is arranged below the aluminum mould during pouring, a rubber pad is arranged below the triangular support frame, and the support frame is prevented from sliding during concrete pouring.

Furthermore, the damping structure channel is a circular channel or a square channel, the damping structure channel is a circular channel, and the cross-sectional diameter of the damping structure channel is 250-350 mm; the square channel is adopted, and the length and the width of the cross section of the square channel are both 250 mm.

Further, the force transmission mechanism includes: contact stick, shielding plate, guide rail and spring; the guide rail is arranged on the side face of the damping bridge plate body, the bottom of the shielding plate is provided with a roller which can slide on the guide rail, the upper part of the shielding plate is connected with a contact rod, the contact rod is higher than the damping bridge plate body and is hinged with a lifting ring, and the distance between the lifting ring and a deformation joint of the damping bridge plate body is 150-200 mm; one end of the spring is fixed at the deformation joint, the other end of the spring is connected with the shielding plate, the shielding plate slides along the guide rail to trigger the light-emitting diode arranged at the bottom of the shielding plate to emit light, and the light emitted by the light-emitting diode triggers the feedback device; wherein the deformation joint is filled with hemp threads.

The LED power supply is connected with the LED, the LED power switch is fixed on the guide rail, and when the roller slides along the guide rail, the LED power switch is triggered to light the LED.

Further, the feedback device includes: the feedback amplifier is connected with the feedback amplifier; the phototriode is matched with the light emitting diode and is electrically connected with the feedback amplifier, the singlechip and the power supply; the power supply is controlled by a single chip microcomputer to be connected with the coil at the moment and for the connection time. The phototriode receives the light of the light-emitting diode and sends a signal to the feedback amplifier, and the singlechip controls the on-time and the on-time of the power supply and the coil after receiving the signal from the feedback amplifier.

Feedback device buries underground at the movement joint position, and the movement joint width is 30 ~ 40mm, and the contact bar is made for circular rod iron, and circular stick diameter is 10 ~ 12mm, or the contact bar shape is the flute profile, and the contact bar exceeds 5 ~ 8mm on the bridge plate surface course that takes precautions against earthquakes, and the pre-buried rings of shock attenuation bridge plate body, rings exceed 5 ~ 8mm on shock attenuation bridge plate body surface course, and the contact bar is articulated with rings, and the contact bar contacts with the sunshade point.

In order to reduce the influence of vibration on the feedback device, a damping rubber sleeve is arranged outside the feedback device, and heat dissipation holes are formed in three parts of the damping rubber sleeve.

When the automobile passes through the bridge plate, the contact rod gives an instant force to the shielding plate at the point contact part with the shielding plate, and the instant force pushes the shielding plate to slide along the guide rail. The sunshade is connected with the spring, can receive the backward pulling force of spring when the sunshade slides along the guide rail forward, and the sunshade can restore to original position because of the spring action after sliding certain distance forward along the guide rail. After the shielding plate slides forwards along the guide rail, the power switch of the light-emitting diode is triggered, the light-emitting diode emits light, the phototriode of the feedback device receives the light signal of the light-emitting diode, and the light emitted by the phototriode outputs an ON signal; the power supply system consists of a +240V linear power supply, the power supply is connected with an 'ON' signal output by the phototriode, and the +240V linear power supply starts to work; the power supply is connected with the single chip microcomputer, the single chip microcomputer is provided with a program for controlling the on-off time of the power supply, the on-off time of the power supply is generally 5-7 min, the coil starts to work after receiving electricity transmitted by the power supply, electromagnetic force is generated, water in the damping structure channel flows due to the electromagnetic force, and vibration energy generated by an automobile is dissipated.

The invention also provides a damping bridge, which comprises a lower structure and the damping bridge plate structure, wherein the lower structure comprises a concrete pier, a concrete pile, a rubber pad and a rubber bag; the concrete piers are connected with the corresponding concrete longitudinal beams, and rubber pads are arranged between the concrete piers and the concrete longitudinal beams; concrete piles are arranged at the bottoms of the concrete piers, rubber bags are fixed between the concrete piers and the concrete piles, and cobblestone and coarse sand mixtures are installed inside the rubber bags. The thickness of the rubber pad is 10-12mm, a pebble and coarse sand mixture is arranged in the rubber bag, the mass ratio of the pebbles to the coarse sand is 2:3, the particle size of the pebbles is 5-10mm, the fineness of the coarse sand is greater than 2.1, the pebbles can slide under the action of upper force, and the vibration transmitted from the upper part is further buffered.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a cross-sectional view of a shock absorbing bridge according to the present invention;

FIG. 2 is a schematic structural diagram of a middle damping bridge plate body, a concrete transverse beam and a concrete longitudinal beam of the damping bridge plate structure provided by the invention;

FIG. 3 is a schematic diagram showing the connections of the coil, feedback device and power supply;

FIG. 4 is a schematic illustration of the construction of the force transfer mechanism (cross-sectional view at the deformation joint);

FIG. 5 is a schematic view of the attachment of the bail and contact bar;

FIG. 6 is a schematic diagram showing a structure of a shock absorbing structure channel which is a prefabricated pipe and a coil;

FIG. 7 shows a schematic view of the channel of the shock absorbing structure cast in place with the coil;

FIG. 8 illustrates a triangular support structure used in the casting of the structure of FIG. 7;

in the figure: 100-damping bridge plate body, 101-lifting ring, 102-saddle-shaped sleeve, 103-prestressed reinforcing rib, 104-anchorage device, 200-concrete longitudinal beam, 300-concrete transverse beam, 400-damping structure channel, 401-radial rib, 500-coil, 501-protective sleeve, 502-aluminum mould, 503-triangular support frame, 504-rubber gasket, 600-force transmission mechanism, 601-contact rod, 602-shielding plate, 603-guide rail, 604-spring, 605-light emitting diode, 606-hemp, 700-feedback device, 701-phototriode, 702-feedback amplifier, 703-single chip microcomputer, 800-power supply, 900-lower structure, 901-concrete pier, 902-concrete pile, 903-rubber pad, 904-rubber bag.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 5, the present invention provides a shock-absorbing bridge deck structure, including:

the damping bridge plate comprises a damping bridge plate body 100, wherein the bottom of the damping bridge plate body 100 is provided with a plurality of connected concrete longitudinal beams 200 and concrete transverse beams 300, and a damping structure channel 400 penetrates through each concrete longitudinal beam 200 along the length direction of the concrete longitudinal beam; each shock absorbing structure passage 400 has water therein occupying a volume 1/3 thereof;

a coil 500 installed at the shock absorbing structure passage 400, and at least a portion of which corresponds to a water position;

the upper part of the damping bridge plate body 100 is embedded with a hanging ring 101 corresponding to the position near the concrete longitudinal beam 200, the force transmission mechanism 600 is arranged at a deformation joint and is hinged with the hanging ring 101, and slides under the action of force generated when a vehicle runs to trigger the feedback device 700;

the feedback device 700 is arranged at the stress transfer mechanism 600, the stress transfer mechanism is triggered to be connected with a power supply 800 connected with the stress transfer mechanism, the power supply 800 is connected with a circuit of the coil 500 and generates electromagnetic force, and the electromagnetic force enables water to flow and dissipates vibration energy generated by vehicle motion.

When a vehicle runs on the bridge plate, the vibration generated by the bridge plate is transmitted to a feedback device through a force transmission mechanism, the feedback device is triggered and then is connected with a power supply connected with the feedback device, the power supply is connected with a coil circuit and generates electromagnetic force, and the electromagnetic force enables water in a channel of the vibration absorption structure to flow and dissipates vibration energy generated by the motion of the vehicle, so that the problem that the vibration absorption device fails due to the fact that a spring structure is adopted is solved, and a relatively stable alternative scheme is provided.

Referring to fig. 1, in one embodiment of the present invention, two sets of concrete longitudinal beams 200 are symmetrically arranged corresponding to a left lane and a right lane; the directions of the first group of concrete longitudinal beams 200 are all arranged at the positions which are 500mm away from the center of the roadway at the distance of 450-; the second set of concrete longitudinal beams 200 are all remote from the centre of the roadway. Therefore, the vibration generated by the running of the vehicle on the left lane and the right lane can be conveniently and simultaneously detected.

The thickness of the damping bridge plate body is 200mm, the concrete strength is C30, the height of the concrete longitudinal beam is 500-fold-600 mm, the width of the concrete longitudinal beam is 400-fold-450 mm, the height of the concrete transverse beam is 500-fold-600 mm, and the width of the concrete longitudinal beam is 300-fold-350 mm.

Advantageously, the first set of concrete longitudinal girders 200 are provided with inclined radial ribs 401 at the locations of the shock absorbing structure channels 400. The first group of concrete longitudinal beams are two groups of concrete longitudinal beams close to the center of the roadway, three radial ribs are arranged on the corresponding shock absorption structure channel, the diameter of each radial rib is 22-25mm, the placing angle of each radial hole is 45 degrees, the distance between every two adjacent radial ribs is 50-100mm, and the radial ribs can effectively reduce the stress concentration phenomenon of the middle shock absorption structure channel.

More advantageously, a saddle-shaped sleeve 102 is arranged inside the damping bridge plate body 100, a prestressed reinforcing rib 103 is arranged inside the saddle-shaped sleeve 102, two ends of the prestressed reinforcing rib 103 are fixed through an anchorage device 104, and the curvature of the prestressed reinforcing rib is consistent with that of the saddle-shaped sleeve 102; and the bending arrangement of the prestressed reinforcing ribs 103 is consistent with the bending moment distribution of the damping bridge plate body 100. Therefore, the bridge plate has great advantages in the aspect of bearing force, and the prestressed reinforcement participates in bearing in advance when the damping bridge plate body vibrates.

Wherein, shock-absorbing structure passageway both ends are confined, and the water injection hole is reserved to the below 150 ~ 200mm position of shock-absorbing structure passageway, and water injection hole diameter is 40 ~ 50mm, can inject water or draw water according to the condition.

Specifically, the prestress tensioning process of the prestress reinforcing rib 103 is determined according to bridge abutment vibration test data, and specifically comprises the following steps: prestress is applied to the steel bars for the first time, wherein the prestress is 30% of the control stress, and the application time is 10 min; prestress is applied to the steel bars for the second time, wherein the prestress is 40% of the control stress, and the application time is 10 min; prestress is applied to the reinforcing steel bar for the third time, wherein the prestress is 105% of the control stress; after the prestressed reinforcement tensioning control is finished, fixing the prestressed reinforcement by using an anchorage 104; epoxy resin is injected into gaps among the steel bar pre-buried holes.

Referring to fig. 6, in one embodiment of the present invention, the shock absorbing structure passage 400 is a prefabricated pipe, the coil 500 is disposed in the prefabricated pipe, and the protective sheath 501 is disposed inside the coil 500; wherein, the damping structure channel is a prefabricated pipe, and the wall thickness of the prefabricated pipe is 10-12 mm.

Referring to fig. 7 and 8, in another embodiment of the present invention, the shock absorbing structure passage 400 is cast in place using an aluminum mold 502, and the coil 500 is wound on the outside of the aluminum mold 502. The damping structure channel is formed by pouring aluminum mould cast-in-place concrete, the thickness of the aluminum mould is 10-12mm, a coil is wound on the outer side of the aluminum mould, a triangular support frame 503 is arranged below the aluminum mould during pouring, and a rubber gasket 504 is arranged below the triangular support frame, so that the support frame is prevented from sliding during concrete pouring.

In the above embodiments, the shock absorbing structure passage 400 is a circular passage or a square passage. The damping structure channel is a circular channel, and the cross section diameter of the damping structure channel is 250mm and 350 mm; the square channel is adopted, and the length and the width of the cross section of the square channel are both 250 mm.

Referring to fig. 4, force transfer mechanism 600 includes: a contact rod 601, a shutter 602, a guide 603, and a spring 604; the guide rail 603 is arranged on the side surface of the shock absorption bridge plate body 100, the bottom of the shielding plate 602 is provided with a roller which can slide on the guide rail 603, the upper part of the shielding plate 602 is connected with a contact rod 601, the contact rod 601 is higher than the shock absorption bridge plate body 100 and is hinged with a lifting ring 101, and the distance from the lifting ring to a deformation joint of the shock absorption bridge plate body is 150-200 mm; one end of a spring 604 is fixed at the deformation joint, the other end of the spring is connected with a shielding plate 602, the shielding plate 602 slides along a guide rail 603, and light emitted by a light emitting diode 605 triggers the feedback device 700; wherein the deformation joint is filled with hemp 606.

The LED power supply is connected with the LED, the LED power switch is fixed on the guide rail, and when the roller slides along the guide rail, the LED power switch is triggered to light the LED.

Referring to fig. 3, the feedback device 700 includes: a phototriode 701, a feedback amplifier 702 and a singlechip 703; the phototriode 701 is matched with the light emitting diode 605 and is electrically connected with the feedback amplifier 702, the singlechip 703 and the power supply 800; the power supply 800 controls the turn-on time and turn-on time of the coil 500 through the single chip microcomputer 703. The phototriode receives the light of the light-emitting diode and sends a signal to the feedback amplifier, and the singlechip controls the on-time and the on-time of the power supply and the coil after receiving the signal from the feedback amplifier.

Feedback device buries underground at the movement joint position, and the movement joint width is 30 ~ 40mm, and the contact bar is made for circular rod iron, and circular stick diameter is 10 ~ 12mm, or the contact bar shape is the flute profile, and the contact bar exceeds 5 ~ 8mm on the bridge plate surface course that takes precautions against earthquakes, and the pre-buried rings of shock attenuation bridge plate body, rings exceed 5 ~ 8mm on shock attenuation bridge plate body surface course, and the contact bar is articulated with rings, and the contact bar contacts with the sunshade point.

In order to reduce the influence of vibration on the feedback device, a damping rubber sleeve is arranged outside the feedback device, and heat dissipation holes are formed in three parts of the damping rubber sleeve.

When the automobile passes through the bridge plate, the contact rod gives an instant force to the shielding plate at the point contact part with the shielding plate, and the instant force pushes the shielding plate to slide along the guide rail. The sunshade is connected with the spring, can receive the backward pulling force of spring when the sunshade slides along the guide rail forward, and the sunshade can restore to original position because of the spring action after sliding certain distance forward along the guide rail. After the shielding plate slides forwards along the guide rail, the power switch of the light-emitting diode is triggered, the light-emitting diode emits light, the phototriode of the feedback device receives the light signal of the light-emitting diode, and the light emitted by the phototriode outputs an ON signal; the power supply system consists of a +240V linear power supply, the power supply is connected with an 'ON' signal output by the phototriode, and the +240V linear power supply starts to work; the power supply is connected with the single chip microcomputer, the single chip microcomputer is provided with a program for controlling the on-off time of the power supply, the on-off time of the power supply is generally 5-7 min, the coil starts to work after receiving electricity transmitted by the power supply, electromagnetic force is generated, water in the damping structure channel flows due to the electromagnetic force, and vibration energy generated by an automobile is dissipated.

Referring to fig. 1, the shock absorbing bridge provided by the invention comprises a lower structure 900 and the above shock absorbing bridge deck structure, wherein the lower structure 900 comprises a concrete pier 901, a concrete pile 902, a rubber pad 903 and a rubber bag 904; the concrete pier 901 is connected with the corresponding concrete longitudinal beam 200, and a rubber pad 903 is arranged between the concrete pier 901 and the concrete longitudinal beam 200; a concrete pile 902 is arranged at the bottom of the concrete pier 901, a rubber bag 904 is fixed between the concrete pier 901 and the concrete pile 902, and a mixture of cobblestones and coarse sand is arranged in the rubber bag 904. The thickness of the rubber pad is 10-12mm, a pebble and coarse sand mixture is arranged in the rubber bag, the mass ratio of the pebbles to the coarse sand is 2:3, the particle size of the pebbles is 5-10mm, the fineness of the coarse sand is greater than 2.1, the pebbles can slide under the action of upper force, and the vibration transmitted from the upper part is further buffered.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.