阅读说明：本技术 一种双侧悬臂式主梁施工用临时扣索索力调节装置及其使用方法 (Temporary buckling cable force adjusting device for construction of bilateral cantilever type main beam and using method thereof ) 是由 单继安 姜平 杨晓海 许奇峰 游晓祥 何费 薛美萍 费汉兵 金平 于 2021-08-03 设计创作，主要内容包括：本发明涉及一种双侧悬臂式主梁施工用临时扣索索力调节装置及其使用方法,属于桥梁施工技术领域。所述临时扣索索力调节装置包括调节套筒,所述调节套筒两端分别设有调节杆和连接螺母,所述连接螺母内穿设调节杆,且所述调节杆露出端分别与调节套筒螺纹连接,使得两所述调节杆对称设于调节套筒内；所述临时扣索包括钢绞线束,所述钢绞线束一端穿设锚板,且所述钢绞线束端部设置P锚,所述P锚端部设有压板,所述压板与锚板固定连接,所述锚板设于连接螺母内,且两者螺纹固定连接。本申请不仅满足施工过程中主梁双侧悬臂状态下的挂篮施工荷载,而且在施工过程中还可以根据实际施工需要对临时扣索的索力进行调整。(The invention relates to a temporary buckling cable force adjusting device for construction of a bilateral cantilever type main beam and a using method thereof, and belongs to the technical field of bridge construction. The temporary buckle cable force adjusting device comprises an adjusting sleeve, two ends of the adjusting sleeve are respectively provided with an adjusting rod and a connecting nut, the adjusting rod penetrates through the connecting nut, and the exposed ends of the adjusting rods are respectively in threaded connection with the adjusting sleeve, so that the two adjusting rods are symmetrically arranged in the adjusting sleeve; the temporary buckle cable comprises a steel strand bundle, an anchor plate is penetrated through by one end of the steel strand bundle, a P anchor is arranged at the end part of the steel strand bundle, a pressing plate is arranged at the end part of the P anchor, the pressing plate is fixedly connected with the anchor plate, the anchor plate is arranged in the connecting nut, and the anchor plate and the connecting nut are fixedly connected through threads. According to the hanging basket construction method and the hanging basket construction device, the hanging basket construction load in the cantilever state of the two sides of the main beam in the construction process is met, and the cable force of the temporary buckling cable can be adjusted according to actual construction requirements in the construction process.)

1. The utility model provides a two side cantilever type girder construction is with interim knot cable power adjusting device which characterized in that: the temporary buckle cable force adjusting device (1) is arranged between the double-limb piers (2), two ends of the temporary buckle cable force adjusting device (1) are respectively connected with one end of a temporary buckle cable on the corresponding side in an anchoring manner, and the other end of the temporary buckle cable penetrates through a buckle cable hole of the double-limb pier (2) on the corresponding side and a buckle cable hole of the main beam (3) and is anchored at the lower end of the main beam (3); the temporary buckle cable force adjusting device (1) comprises an adjusting sleeve (11), two ends of the adjusting sleeve (11) are respectively provided with an adjusting rod (12) and a connecting nut (13), the connecting nut (13) is internally provided with the adjusting rod (12) in a penetrating manner, and the exposed ends of the adjusting rod (12) are respectively in threaded connection with the adjusting sleeve (11), so that the two adjusting rods (12) are symmetrically arranged in the adjusting sleeve (11); the temporary buckle cable comprises a steel strand (15), one end of the steel strand (15) penetrates through the anchor plate (14), a P anchor (16) is arranged at the end part of the steel strand (15), a pressing plate (18) is arranged at the end part of the P anchor (16), and the pressing plate (18) is fixedly connected with the anchor plate (14), so that two ends of the P anchor (16) are tightly attached to the pressing plate (18) and the anchor plate (14); the anchor plate (14) is arranged in the connecting nut (13) and fixedly connected with the connecting nut through threads.

2. The temporary buckling cable force adjusting device for construction of the double-side cantilever type main beam of claim 1, wherein: one end of the adjusting rod (12) is provided with an external thread, and the other end is provided with an outward convex step (121).

3. The temporary buckling cable force adjusting device for construction of the double-side cantilever type main beam of claim 2, wherein: the inner cavity of the connecting nut (13) is provided with an inner convex step (131), and the inner convex step (131) is matched with the outer convex step (121).

4. The temporary buckling cable force adjusting device for construction of the double-side cantilever type main beam of claim 2, wherein: the inner walls of two ends of the adjusting sleeve (11) are respectively provided with a thread section, a round hole section is arranged between the two thread sections, and the diameter of the round hole section is larger than the major diameter of the thread section.

5. The temporary buckling cable force adjusting device for construction of the double-side cantilever type main beam of claim 1, wherein: still include stretch-draw subassembly (4), stretch-draw subassembly (4) include bearing plate (42), two the coupling nut (13) outside is equipped with bearing plate (42) respectively, two stretch-draw pole (41) are worn to establish by the level between bearing plate (42), just stretch-draw pole (41) one end is through fixation nut (45) and a bearing plate fixed connection, stretch-draw pole (41) other end sets up stretch-draw jack (43), through stretch-draw nut (44) make stretch-draw pole (41), stretch-draw jack (43) and another bearing plate (42) fixed connection for stretch-draw subassembly (4) card is in the terminal surface of two coupling nut (13).

6. The use method of the temporary buckling cable force adjusting device for construction of the bilateral cantilever type main beam is based on any one of claims 1 to 5, and is characterized in that: the using method comprises the following steps:

step 1: one end of each of N steel strands in the steel strand bundle penetrates through the corresponding through hole of the anchor plate, and single P anchor extrusion manufacturing is carried out on the N steel strands;

step 2: after the N steel strands complete the P anchor manufacturing, arranging a pressing plate at one end part of the P anchor, fixing the pressing plate with the anchor plate through a screw, and screwing the screw tightly to enable the other end of the P anchor to be tightly attached to the end face of the anchor plate;

and step 3: the adjusting rods penetrate through the connecting nuts and are screwed in the adjusting sleeves, the screwing lengths of the adjusting rods at the two ends of the adjusting sleeves are the same, the adjusting rods are symmetrically arranged at the two ends of the adjusting sleeves, the initial distance between the end parts of the two adjusting rods is T1, and the screwing lengths of the adjusting rods into the round hole sections of the adjusting sleeves are T2 respectively;

and 4, step 4: arranging the anchor plate at the end part of the corresponding connecting nut, and enabling the anchor plate to be fixedly connected with the connecting nut through threads by rotating the connecting nut;

and 5: symmetrically assembling the adjusting rod, the connecting nut and the anchor plate to form a temporary buckle cable force adjusting device;

step 6: when the cable force is adjusted in the later period, the two support plates are respectively arranged on the outer sides of the corresponding connecting nuts, the tension rod horizontally penetrates between the two support plates, and the fixing nut is screwed into one end of the tension rod, so that one end of the tension rod is fixedly connected with one support plate; the other end of the tensioning rod is provided with a tensioning jack, and a tensioning nut is screwed into the other end of the tensioning rod, so that the other end of the tensioning rod is fixedly connected with the other supporting plate and the tensioning jack;

a. when the cable force needs to be increased, the tensioning jack enables the adjusting rods and the connecting nut to be in a stress-free state, the adjusting sleeve is fixed, the two adjusting rods rotate synchronously, the two adjusting rods are simultaneously screwed into the center of the adjusting sleeve until the end faces of the outer convex steps of the adjusting rods cling to the end faces of the inner convex steps of the connecting nut, and the step is repeated to complete the increase of the cable force;

b. when the cable force needs to be reduced or completely released, the tensioning jack enables the adjusting rods and the connecting nuts to be in a stress-free state, the adjusting sleeve is fixed, the two adjusting rods rotate synchronously, the two adjusting rods are enabled to be screwed out towards the center of the adjusting sleeve simultaneously until the side faces of the convex steps of the adjusting rods cling to the end face of the pressing plate, the tensioning jack is released slowly, the distance between the pressing plate and the end face of the adjusting rod is enabled to be restored to the initial distance slowly, the adjusting rods continue to be screwed out, the step is repeated, and the reduction of the cable force or the release completion of the cable force are completed.

7. The use method of the temporary buckling cable force adjusting device for construction of the double-side cantilever type main beam according to claim 6 is characterized in that: the N steel strands in the step 1 can also be subjected to single P anchor manufacturing, and then the steel strands subjected to P anchor penetrate through the through holes of the anchor plate.

8. The use method of the temporary buckling cable force adjusting device for construction of the double-side cantilever type main beam according to claim 6 is characterized in that: the T1 value in the step 3 is a value obtained by calculating the extension amount according to the cable force required to be increased by cable adjustment; the T2 value is obtained according to the stay extension calculated by the maximum tension of the stay.

Technical Field

The invention relates to a temporary buckling cable force adjusting device for construction of a bilateral cantilever type main beam and a using method thereof, and belongs to the technical field of bridge construction.

Background

The cantilever construction refers to a construction method that working platforms are arranged on two sides of a pier, and beam sections are poured or assembled to a midspan cantilever section by section in a balanced manner until a bridge span structure is closed. The cantilever construction has the characteristics that no or few supports are used, navigation or under-bridge traffic is not influenced during construction, and the cantilever construction is also suitable for occasions with complex mountainous terrain and occasions with difficult support erection of mountainous high-pier large-span bridges. However, for the main beam of the long cantilever pouring construction, the main beam structure generally cannot independently bear the construction load of the hanging basket in the long cantilever state in the construction process, and the hanging basket pouring construction needs to be carried out by adopting auxiliary means such as temporary support or buckling cables.

Disclosure of Invention

The invention aims to solve the technical problem of providing a temporary buckling rope cable force adjusting device for construction of a bilateral cantilever type main beam and a using method thereof aiming at the prior art, which can not only provide hanging basket construction load in a bilateral cantilever state of the main beam in the construction process, but also adjust the temporary buckling rope cable force according to actual construction requirements in the construction process.

The technical scheme adopted by the invention for solving the problems is as follows: a temporary buckling cable force adjusting device for double-side cantilever type girder construction is arranged between two limb piers, two ends of the temporary buckling cable force adjusting device are respectively connected with one end of a temporary buckling cable on the corresponding side in an anchoring mode, and the other end of the temporary buckling cable penetrates through buckling cable holes of the two limb piers on the corresponding side and buckling cable holes of a girder and is anchored at the lower end of the girder; the temporary buckle cable force adjusting device comprises an adjusting sleeve, two ends of the adjusting sleeve are respectively provided with an adjusting rod and a connecting nut, the adjusting rod penetrates through the connecting nut, and the exposed ends of the adjusting rods are respectively in threaded connection with the adjusting sleeve, so that the two adjusting rods are symmetrically arranged in the adjusting sleeve; the temporary buckle cable comprises a steel strand bundle, one end of the steel strand bundle penetrates through the anchor plate, a P anchor is arranged at the end part of the steel strand bundle, a pressing plate is arranged at the end part of the P anchor, and the pressing plate is fixedly connected with the anchor plate, so that two ends of the P anchor are tightly attached to the pressing plate and the anchor plate; the anchor plate is arranged in the connecting nut and fixedly connected with the connecting nut through threads.

One end of the adjusting rod is provided with an external thread, and the other end of the adjusting rod is provided with an outward convex step.

The inner cavity of the connecting nut is provided with an inner convex step which is matched with the outer convex step.

The inner walls of two ends of the adjusting sleeve are respectively provided with a thread section, a round hole section is arranged between the two thread sections, and the diameter of the round hole section is larger than the major diameter of the thread section.

Still include the tensioning assembly, the tensioning assembly includes the bearing plate, two the coupling nut outside is equipped with the bearing plate respectively, two stretch-draw pole is worn to establish by the level between the bearing plate, just stretch-draw pole one end is through fixation nut and a bearing plate fixed connection, the stretch-draw pole other end sets up the tensioning jack, through tensioning nut makes stretch-draw pole, tensioning jack and another bearing plate fixed connection for the tensioning assembly card is in two coupling nut's terminal surface.

A use method of a temporary buckling cable force adjusting device for construction of a bilateral cantilever type main beam comprises the following steps:

step 1: one end of each of N steel strands in the steel strand bundle penetrates through the corresponding through hole of the anchor plate, and single P anchor extrusion manufacturing is carried out on the N steel strands;

step 2: after the N steel strands complete the P anchor manufacturing, arranging a pressing plate at one end part of the P anchor, fixing the pressing plate with the anchor plate through a screw, and screwing the screw tightly to enable the other end of the P anchor to be tightly attached to the end face of the anchor plate;

and step 3: the adjusting rods penetrate through the connecting nuts and are screwed in the adjusting sleeves, the screwing lengths of the adjusting rods at the two ends of the adjusting sleeves are the same, the adjusting rods are symmetrically arranged at the two ends of the adjusting sleeves, the initial distance between the end parts of the two adjusting rods is T1, and the screwing lengths of the adjusting rods into the round hole sections of the adjusting sleeves are T2 respectively;

and 4, step 4: arranging the anchor plate at the end part of the corresponding connecting nut, and enabling the anchor plate to be fixedly connected with the connecting nut through threads by rotating the connecting nut;

and 5: symmetrically assembling the adjusting rod, the connecting nut and the anchor plate to form a temporary buckle cable force adjusting device;

step 6: when the cable force is adjusted in the later period, the two support plates are respectively arranged on the outer sides of the corresponding connecting nuts, the tension rod horizontally penetrates between the two support plates, and the fixing nut is screwed into one end of the tension rod, so that one end of the tension rod is fixedly connected with one support plate; the other end of the tensioning rod is provided with a tensioning jack, and a tensioning nut is screwed into the other end of the tensioning rod, so that the other end of the tensioning rod is fixedly connected with the other supporting plate and the tensioning jack;

a. when the cable force needs to be increased, the tensioning jack enables the adjusting rods and the connecting nut to be in a stress-free state, the adjusting sleeve is fixed, the two adjusting rods rotate synchronously, the two adjusting rods are simultaneously screwed into the center of the adjusting sleeve until the end faces of the outer convex steps of the adjusting rods cling to the end faces of the inner convex steps of the connecting nut, and the step is repeated to complete the increase of the cable force;

b. when the cable force needs to be reduced or completely released, the tensioning jack enables the adjusting rods and the connecting nuts to be in a stress-free state, the adjusting sleeve is fixed, the two adjusting rods rotate synchronously, the two adjusting rods are enabled to be screwed out towards the center of the adjusting sleeve simultaneously until the side faces of the convex steps of the adjusting rods cling to the end face of the pressing plate, the tensioning jack is released slowly, the distance between the pressing plate and the end face of the adjusting rod is enabled to be restored to the initial distance slowly, the adjusting rods continue to be screwed out, the step is repeated, and the reduction of the cable force or the release completion of the cable force are completed.

The N steel strands in the step 1 can also be subjected to single P anchor manufacturing, and then the steel strands subjected to P anchor penetrate through the through holes of the anchor plate.

The T1 value in the step 3 is a value obtained by calculating the extension amount according to the cable force required to be increased by cable adjustment; the T2 value is obtained according to the stay extension calculated by the maximum tension of the stay.

Compared with the prior art, the invention has the advantages that: the temporary buckling cable force adjusting device is arranged between a double-limb pier and a main beam, so that the hanging basket construction load in the cantilever state of the two sides of the main beam in the construction process is met, the cable force of the temporary buckling cable can be adjusted according to actual construction requirements in the construction process, and the temporary buckling cable force adjusting device is simple in structure and convenient to disassemble and assemble.

Drawings

Fig. 1 is an installation schematic diagram of a temporary buckle cable force adjusting device for construction of a double-side cantilever type main beam according to an embodiment of the invention;

fig. 2 is a schematic view of a temporary buckle cable force adjusting device for construction of a double-side cantilever type main beam according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the adjustment sleeve of FIG. 2;

FIG. 5 is a schematic view of the adjustment lever of FIG. 2;

FIG. 6 is a schematic view of the coupling nut of FIG. 2;

FIG. 7 is a schematic view of the anchor plate of FIG. 2;

FIG. 8 is a schematic view of the platen of FIG. 2;

FIG. 9 is a schematic view of the use of FIG. 2;

in the figure, 1, a temporary buckle cable force adjusting device, 11 adjusting sleeves, 12 adjusting rods, 121 outer convex steps, 13 connecting nuts, 131 inner convex steps, 14 anchor plates, 15 steel strand bundles, 16P anchors, 17 screws, 18 pressing plates, 2 double-limb piers, 3 main beams, 4 tensioning assemblies, 41 tension rods, 42 supporting plates, 43 tensioning jacks, 44 tensioning nuts and 45 fixing nuts.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1, in the temporary buckle cable force adjusting device for construction of a double-side cantilever-type main beam in this embodiment, a temporary buckle cable force adjusting device 1 is disposed between two pier legs 2, two ends of the temporary buckle cable force adjusting device 1 are respectively connected to one end of a temporary buckle cable on a corresponding side in an anchoring manner, and the other end of the temporary buckle cable is inserted into a temporary buckle cable hole of the two pier legs 2 and a temporary buckle cable hole of a main beam 3 on the corresponding side and anchored at the lower end of the main beam 3.

As shown in fig. 2, 3, 4, 5, 6, 7 and 8, the cable force adjusting device 1 includes a hollow adjusting sleeve 11, and the inner walls of both ends of the adjusting sleeve 11 are symmetrically provided with threaded sections. The two ends of the adjusting sleeve 11 are respectively provided with a connecting nut 13 and an adjusting rod 12, one end of the adjusting rod 12 is provided with an external thread, the other end of the adjusting rod 12 is provided with an outer convex step 121, the adjusting rod 12 penetrates through the connecting nut 13, and the end of the adjusting rod 12 with the external thread is exposed out of the connecting nut 13 and is in threaded connection with the adjusting sleeve 11. The inner cavity of the connecting nut 13 is provided with an inner convex step 131, the outer convex step 121 is matched with the inner convex step 131, and the inner convex step 131 of the connecting nut 13 limits and bears the outer convex step 131 of the adjusting rod 12. The temporary buckle cable comprises a steel strand bundle 15, one end of the steel strand bundle 15 penetrates through the anchor plate 14, a P anchor 16 is arranged at the end part of the steel strand bundle 15 penetrating through the anchor plate 14, a pressing plate 18 is arranged on the outer side of the P anchor 16, and the pressing plate 18 is fixedly connected with the anchor plate 14 through a screw 17, so that one end of the P anchor 16 is attached to the end part of the pressing plate 18, and the other end of the P anchor is attached to the end part of the anchor plate 14. The anchor plate 14 is arranged in the connecting nut 13, the outer surface of the anchor plate 14 is provided with an external thread, the end part of the connecting nut 13 is provided with an internal thread, and the anchor plate and the connecting nut are fixedly connected through the threads.

A round hole section is arranged between the two thread sections of the adjusting sleeve 11, the diameter of the round hole section is larger than the major diameter of the thread sections, and the round hole section is used for screwing in and screwing out the two adjusting rods 12.

As shown in fig. 9, a method for using a temporary buckling cable force adjusting device for construction of a double-side cantilever type main beam includes the following steps:

step 1: and respectively enabling one ends of the N steel strands in the steel strand bundle to penetrate through corresponding through holes of the anchor plate, and carrying out extrusion manufacturing of a single P anchor on the N steel strands, or firstly carrying out single P anchor manufacturing on the N steel strands, and then enabling the steel strands subjected to P anchor to penetrate through the through holes of the anchor plate.

Step 2: and after the P anchor is manufactured by all the steel strands, arranging the pressing plate at the end part of the P anchor, fixing the pressing plate with the anchor plate through a screw, and screwing the screw to enable the other end of the P anchor to be tightly attached to the end surface of the anchor plate.

And step 3: the adjusting rods penetrate through the connecting nuts and are screwed in the adjusting sleeves, the screwing lengths of the adjusting rods at the two ends of the adjusting sleeves are consistent, the adjusting rods are symmetrically arranged at the two ends of the adjusting sleeves, the initial distance between the end parts of the two adjusting rods is T1, and the value of T1 is a value obtained by calculating the extension amount according to the cable force required to be increased by cable adjustment at the later stage; the length of the adjusting rod screwed into the round hole section of the adjusting sleeve is T2, and the T2 value is obtained by calculating the extension of the inhaul cable according to the maximum tensile force of the inhaul cable.

And 4, step 4: the anchor plate is arranged at the end part of the corresponding connecting nut, and the connecting nut is rotated to enable the anchor plate to be fixedly connected with the connecting nut through threads.

And 5: and the adjusting rod, the connecting nut and the anchor plate are symmetrically assembled, so that the temporary buckle cable force adjusting device is formed.

Step 6: and when the cable is adjusted in the later period, the tensioning assembly is adopted for adjustment. The tensioning assembly 4 comprises a supporting plate 42, the outer sides of the two connecting nuts 13 are respectively provided with the supporting plate 42, a tensioning rod 41 horizontally penetrates between the two supporting plates 42, one end of the tensioning rod 41 is fixed through a fixing nut 45, the other end of the tensioning rod 41 is provided with a tensioning jack 43, the tensioning rod 41, the tensioning jack 43 and the supporting plates 42 are fixedly connected through a tensioning nut 44, and the tensioning assembly is clamped on the end faces of the connecting nuts at the two ends. When the cable force needs to be increased, the tensioning jack enables the adjusting rods and the connecting nut to be in a stress-free state, the adjusting sleeve is fixed indefinitely, the two adjusting rods rotate synchronously, the two adjusting rods are screwed into the center of the adjusting sleeve simultaneously until the end faces of the outer convex steps of the adjusting rods cling to the end faces of the inner convex steps of the connecting nut, and the step is repeated to complete the increase of the cable force.

When cable force needs to be reduced or completely released in later cable adjustment, the tensioning jack enables the adjusting rods and the connecting nuts to be in a stress-free state, the adjusting sleeve is fixed, the two adjusting rods rotate synchronously, the two adjusting rods are screwed out towards the center of the adjusting sleeve simultaneously until the side faces of the convex steps of the adjusting rods cling to the end face of the pressing plate, the tensioning jack is released slowly, the distance between the pressing plate and the end face of the adjusting rod is slowly recovered to the initial distance, the adjusting rods are screwed out continuously, the step is repeated, and cable force reduction or cable force release is completed.

Steel strand wires pencil one end adopts single P anchor structure in this application, detains the cable temporarily and can realize the preparation in the building site, uses the small-size extruder of standard can carry out system cable, simple economy. This application not only can provide the basket construction load of hanging under the two side cantilever states of girder in the work progress, can also adjust the cable force of detaining the cable temporarily according to actual construction needs simultaneously in the work progress to be convenient for demolish after the construction.

In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.