CN215714597U

CN215714597U - Public road bridge roof beam expansion joint structure

Info

Publication number: CN215714597U
Application number: CN202121736058.4U
Authority: CN
Inventors: 王庆滨; 丁华磊; 曾洪程; 古洋
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-01
Anticipated expiration: 2031-07-26

Abstract

The utility model belongs to the technical field of road and bridge facility construction, and relates to a road and bridge expansion joint structure which comprises a deceleration strip, a first elastic support assembly and a connecting mechanism for connecting a bridge, wherein the connecting mechanism comprises an elastic connecting assembly and two symmetrically arranged steel beams, and positioning columns for connecting the bridge are arranged on the steel beams; the two steel beams are connected through an elastic connecting assembly; the deceleration strip is arranged between the two steel beams; the steel beam is also provided with an I-shaped frame in sliding connection with the steel beam; the H-shaped frame is connected with the deceleration strip through a first elastic supporting assembly. The utility model has novel structure and ingenious conception, has certain damping function, can effectively reduce the impact load on the bridge body caused by the high-speed passing of the vehicle, and prolongs the service life of the bridge body.

Description

Public road bridge roof beam expansion joint structure

Technical Field

The utility model belongs to the technical field of road and bridge facility construction and relates to a road and bridge expansion joint structure.

Background

Highway bridge expansion joint: it is referred to that in order to meet the requirement of deck deformation, expansion joints are usually provided between two beam ends, between a beam end and an abutment, or at the hinge joint of a bridge. The expansion joint is required to be freely telescopic in two directions parallel to and perpendicular to the axis of the bridge, and the expansion joint is firm and reliable, and when a vehicle runs, the vehicle is smooth and free of sudden jump and noise; the rainwater and garbage soil can be prevented from infiltration and blocking; the installation, the inspection, the maintenance and the dirt elimination are all simple and convenient. At the position of the expansion joint, the handrail and the bridge deck pavement are disconnected. The role of a road bridge expansion joint is to accommodate the displacement and coupling between the superstructure caused by vehicle loads and bridge building materials.

The existing bridge expansion joint is usually arranged at the displacement position of a beam body, a bearing plate on the upper part of the existing bridge expansion joint needs to bear the force of the whole vehicle, stress points are concentrated, structural damage is easily caused, and the service life is short. Therefore, it is necessary to design an expansion joint structure for highway bridges.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a highway bridge expansion joint structure to solve the above-mentioned drawbacks.

In order to achieve the purpose, the utility model provides the following technical scheme:

a highway bridge expansion joint structure comprises a deceleration strip, a first elastic supporting assembly and a connecting mechanism for connecting a bridge, wherein the connecting mechanism comprises an elastic connecting assembly and two symmetrically arranged steel beams, and positioning columns for connecting the bridge are arranged on the steel beams; the two steel beams are connected through an elastic connecting assembly; the deceleration strip is arranged between the two steel beams; the steel beam is also provided with an I-shaped frame in sliding connection with the steel beam; the H-shaped frame is connected with the deceleration strip through a first elastic supporting assembly.

Furthermore, the elastic connecting assembly comprises a telescopic block, a connecting rod and a connecting spring, and the connecting spring is sleeved on the connecting rod; the telescopic blocks are arranged at two ends of the connecting rod; the steel beam is provided with a telescopic groove, and the two telescopic blocks are respectively arranged in the telescopic groove in a sliding manner.

Further, the first elastic support assembly comprises a bearing plate, a first support spring, a telescopic rod and a limiting block; the speed-reducing belt is characterized in that the bearing plate is arranged between the first supporting spring and the speed-reducing belt, one end of the telescopic rod is fixedly connected with the bearing plate, and the other end of the telescopic rod is fixedly connected with the limiting block; the first supporting spring is sleeved on the telescopic rod; the I-shaped frame is provided with a through hole, and the telescopic rod is arranged in the through hole in a sliding mode.

Furthermore, two sides of the H-shaped frame are also provided with second elastic supporting components, and the second elastic supporting components comprise wheel grooves, rollers, supporting arms and hydraulic shock absorbers; the wheel groove is fixedly connected with the steel beam, one end of the supporting arm is rotatably connected with the I-shaped frame, and the other end of the supporting arm is slidably connected with the wheel groove through a roller; one end of the hydraulic shock absorber is connected with the supporting arm, and the other end of the hydraulic shock absorber is connected with the I-shaped frame.

Further, the top of girder steel is equipped with the blotter, the deceleration strip is located on the blotter.

Further, the blotter is composite bed structure, including the stereoplasm stratum basale, rubber buffer layer, the silica gel buffer layer that set gradually.

Furthermore, both ends of the deceleration strip are provided with a reflective strip.

Furthermore, the elastic connecting assembly, the first elastic supporting assembly and the second elastic supporting assembly are all provided with a plurality of elastic connecting assemblies.

The utility model has the beneficial effects that:

1. the girder steel connection is passed through to highway bridge's joint line both sides, when the vehicle passes through, can press on the deceleration strip, drives the deceleration strip downstream to drive bearing plate downstream, make first elastic support subassembly atress compression, play the cushioning effect, can effectively reduce the high-speed impact load that leads to the fact the pontic of vehicle, improved the life of pontic.

2. Under expend with heat and contract with cold's effect, can drive two girder steels separation or be close to drive flexible piece and slide in flexible inslot, make the connecting spring atress tensile or compress, worker shape frame can remain throughout at the middle part, adapts to expend with heat and contract with cold's deflection through scalable and slip, makes overall structure non-deformable, guarantees normal work.

3. Set up the blotter through deceleration strip bottom both sides, can not only play the effect of buffering, can prevent moreover that water or debris from getting into the structure from the bottom of deceleration strip, produce the corrosion, lead to the device to be unable to use.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of an expansion joint structure according to the present invention;

FIG. 2 is a schematic view of the elastic connecting member of the present invention;

FIG. 3 is a schematic view of a first resilient support assembly according to the present invention;

FIG. 4 is a schematic view of a second elastic support assembly according to the present invention;

FIG. 5 is a schematic view of the structure of the cushion of the present invention.

Reference numerals: 1-left steel beam; 2-right steel beam; 3-an elastic connection assembly; 4-a slide rail; 5-a slide block; 6-blocking seat; 7-H-shaped frame; 8-a positioning column; 9-positioning plate; 10-a second resilient support member; 11-a reflective strip; 12-a cushion pad; 13-a groove; 14-a speed bump; 15-a bearing plate; 16-a first resilient support member; 17-a telescopic groove; 18-a telescoping block; 19-a connecting rod; 20-connecting a spring; 21-a through hole; 22-a limiting block; 23-a telescopic rod; 24-a first support spring; 25-wheel groove; 26-a roller; 27-a support arm; 28-hydraulic shock absorber; 29-a hinge; 30-a hard base layer; 31-a rubber cushion layer; 32-silica gel buffer layer.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 5, the highway bridge expansion joint structure includes a deceleration strip 14, a first elastic support assembly 16, and a connection mechanism for connecting a bridge, wherein the connection mechanism includes an elastic connection assembly 3, a left steel beam 1 and a right steel beam 2 which are symmetrically arranged, a positioning column 8 for connecting the bridge is mounted on the left steel beam 1 and the right steel beam 2, and a plurality of positioning pieces 9 are fixedly mounted on the positioning column 8; the two steel beams are connected through an elastic connecting assembly 3; the deceleration strip 14 is arranged between the left steel beam 1 and the right steel beam 2; the left steel beam 1 and the right steel beam 2 are also provided with an I-shaped frame 7 in sliding connection with the left steel beam 1 and the right steel beam 2; the left steel beam 1 and the right steel beam 2 are also provided with slide rails 4, a slide block 5 is fixedly arranged below the I-shaped frame 7, the slide block 5 is connected with the slide rails 4 in a sliding manner, and the end parts of the slide rails 4 are also provided with baffle seats 6 to prevent the slide block 5 from being separated from the slide rails 4; the I-shaped frame 7 is connected with the speed bump 14 through a first elastic supporting assembly 16.

In this embodiment, the elastic connection assembly 3 includes a telescopic block 18, a connection rod 19, and a connection spring 20, and the connection spring 20 is sleeved on the connection rod 19; the telescopic blocks 18 are arranged at two ends of the connecting rod 19; all be provided with flexible groove 17 on left girder steel 1, the right girder steel 2, two flexible pieces 18 are slidable mounting respectively in two flexible grooves 17.

In this embodiment, the first elastic support assembly 16 includes a bearing plate 15, a first support spring 24, an expansion link 23, and a limit block 22; the bearing plate 15 is arranged between the first supporting spring 24 and the deceleration strip 14, one end of the telescopic rod 23 is fixedly provided with the bearing plate 15, and the other end of the telescopic rod is fixedly provided with the limiting block 22; the bearing plate 15 is arranged below the deceleration strip 14, and the first support spring 24 is sleeved on the expansion link 23; the H-shaped frame 7 is provided with a through hole 21, and the telescopic rod 23 is slidably arranged in the through hole 21.

In this embodiment, the two sides of the i-shaped frame 7 are further provided with second elastic supporting assemblies 10, and each second elastic supporting assembly 10 comprises a wheel groove 25, a roller 26, a supporting arm 27 and a hydraulic shock absorber 28; the wheel groove 25 is fixedly arranged on the left steel beam 1 and the right steel beam 2, one end of the supporting arm 27 is connected with the I-shaped frame 7 through a hinge 29, and the other end is connected with the wheel groove 25 in a sliding manner through a roller 26; one end of the hydraulic damper 28 is connected to the support arm 27 by a pin, and the other end is rotatably connected to the i-shaped frame 7 by a pin.

In this embodiment, the elastic connection assembly 3, the first elastic support assembly 16, and the second elastic support assembly 10 are all provided with a plurality of elastic connection assemblies, and are arranged in parallel in the width direction of the bridge.

In the embodiment, grooves 13 are formed in the tops of the left steel beam 1 and the right steel beam 2, cushion pads 12 are installed in the grooves 13, and deceleration strips 14 are installed on the cushion pads 12; the cushion pad 12 is a composite layer structure and comprises a hard substrate layer 30, a rubber buffer layer 31 and a silica gel buffer layer 32 which are sequentially arranged; and the two ends of the deceleration strip 14 are also provided with the reflective strips 11.

During the use, be connected left girder steel 1, right girder steel 2 and highway bridge's joint line's both sides respectively, when the vehicle passes through, the vehicle can be pressed on deceleration strip 14, makes deceleration strip 14 downstream to drive bearing plate 15 downstream, cause the compression of 16 atress of first elastic support subassembly, play the cushioning effect, can effectively reduce the high-speed impact load that leads to the fact the pontic of vehicle, improved the life of pontic.

The bridge can drive left girder steel 1 and right girder steel 2 separation or be close to under expend with heat and contract with cold's effect, makes flexible piece 18 slide in flexible groove 17, and coupling spring 20 atress is tensile or the compression, and I-shaped frame 7 can remain throughout at the middle part, and the flexible deformation that adapts to expend with heat and contract with cold that slides through coupling spring 20 makes overall structure non-deformable, guarantees normal work.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. The utility model provides a public road bridge roof beam expansion joint structure which characterized in that: the deceleration strip comprises a deceleration strip, a first elastic supporting assembly and a connecting mechanism for connecting a bridge, wherein the connecting mechanism comprises an elastic connecting assembly and two symmetrically arranged steel beams, and positioning columns for connecting the bridge are arranged on the steel beams; the two steel beams are connected through an elastic connecting assembly; the deceleration strip is arranged between the two steel beams; the steel beam is also provided with an I-shaped frame in sliding connection with the steel beam; the H-shaped frame is connected with the deceleration strip through a first elastic supporting assembly.

2. The highway bridge expansion joint structure of claim 1, wherein: the elastic connecting assembly comprises a telescopic block, a connecting rod and a connecting spring, and the connecting spring is sleeved on the connecting rod; the telescopic blocks are arranged at two ends of the connecting rod; the steel beam is provided with a telescopic groove, and the two telescopic blocks are respectively arranged in the telescopic groove in a sliding manner.

3. The highway bridge expansion joint structure of claim 1, wherein: the first elastic support assembly comprises a bearing plate, a first support spring, a telescopic rod and a limiting block; the speed-reducing belt is characterized in that the bearing plate is arranged between the first supporting spring and the speed-reducing belt, one end of the telescopic rod is fixedly connected with the bearing plate, and the other end of the telescopic rod is fixedly connected with the limiting block; the first supporting spring is sleeved on the telescopic rod; the I-shaped frame is provided with a through hole, and the telescopic rod is arranged in the through hole in a sliding mode.

4. The highway bridge expansion joint structure of claim 1, wherein: two sides of the I-shaped frame are also provided with second elastic supporting components, and the second elastic supporting components comprise wheel grooves, rollers, supporting arms and hydraulic shock absorbers; the wheel groove is fixedly connected with the steel beam, one end of the supporting arm is rotatably connected with the I-shaped frame, and the other end of the supporting arm is slidably connected with the wheel groove through a roller; one end of the hydraulic shock absorber is connected with the supporting arm, and the other end of the hydraulic shock absorber is connected with the I-shaped frame.

5. The highway bridge expansion joint structure of claim 1, wherein: the top of girder steel is equipped with the blotter, the deceleration strip is located on the blotter.

6. The road bridge expansion joint structure of claim 5, wherein: the buffer cushion is of a composite layer structure and comprises a hard substrate layer, a rubber buffer layer and a silica gel buffer layer which are sequentially arranged.

7. The highway bridge expansion joint structure of claim 1, wherein: and two ends of the deceleration strip are provided with a reflective strip.

8. The highway bridge expansion joint structure of claim 1, wherein: the elastic connecting assembly, the first elastic supporting assembly and the second elastic supporting assembly are all provided with a plurality of elastic connecting assemblies.