WO2021212591A1

WO2021212591A1 - Bridge expansion joint structure

Info

Publication number: WO2021212591A1
Application number: PCT/CN2020/092052
Authority: WO
Inventors: 刘西平; 邹诚杰
Original assignee: 昆山顶牛市政建设有限公司
Priority date: 2020-04-23
Filing date: 2020-05-25
Publication date: 2021-10-28
Also published as: AU2020102295A4; CN212641186U

Abstract

A bridge expansion joint structure. The expansion joint is provided with an expansion device (1); the telescopic device (1) comprises a cover plate (2) and section steel; the section steel comprises first section steel (3) and second section steel (4) provided at two sides of the expansion joint; the cover plate (2) is detachably connected to the section steel; several mounting structures (5) are evenly provided between the cover plate (2) and the section steel; each mounting structure (5) comprises a first connecting member (51), a second connecting member (52), and a plug (53); the lock rings (511) at the tail of the first connecting member (51) and the lock rings (521) at the tail of the second connecting member (52) are arranged in a staggered manner; the plug (53) is inserted from the top of the cover plate (2) and simultaneously inserted into the lock rings (511) at the tail of the first connecting member (51) and the lock rings (521) at the tail of the second connecting member (52), thereby achieving interlocking between the cover plate (2) and the section steel.

Description

Bridge expansion joint structure

Technical field

The utility model belongs to the technical field of bridge engineering, and specifically relates to a bridge expansion joint structure.

Background technique

With the continuous development of society and the rapid development of China's economy, the road, as the lifeblood of the country, has also achieved unprecedented development. Expansion joints are set at the joints of the bridge and the joints of the roads at both ends to meet the requirements of bridge deck deformation. Expansion joints are usually set between the two beam ends, between the beam ends and the abutment, or at the hinged position of the bridge. Expansion joints are required to be able to expand and contract freely in two directions parallel and perpendicular to the axis of the bridge. They should be firm and reliable. Vehicles should run smoothly, without sudden jumps and noise; installation, inspection, maintenance, and dirt removal should be simple and convenient. Once the bridge expansion joint is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents.

However, the structure of the current bridge expansion joints is not strong enough, and there is a safety hazard when vehicles pass by for a long time. Moreover, the joints of the current expansion joints are simply connected by steel plates, and this construction method is often made of steel plates directly in order to save trouble. Fixed connection, that is, non-detachable connection. In daily use, the expansion joints cannot be routinely inspected and maintained, and there are hidden safety hazards; therefore, the design of the expansion joint structure has good bearing capacity and good stability, and meets the expansion and contraction deformation of the bridge. Practical meaning.

Utility model content

The main technical problem solved by the utility model is to provide a bridge expansion joint structure, which meets the requirements of road expansion and deformation, has a stable structure and good bearing capacity; at the same time, installation, inspection and maintenance are simple and convenient.

In order to solve the above technical problems, a technical solution adopted by the present invention is: a bridge expansion joint structure, including expansion joints, the expansion joints are provided with expansion devices, the expansion devices including a cover plate and a section steel, the cover plate Removably connected with the section steel; the section steel includes a first section steel and a second section steel arranged on both sides of the expansion joint, the cover plate is arranged above the expansion joint, and the cover plate is flush with the bridge deck;

A number of installation structures are evenly provided between the cover plate and the section steel. The installation structure includes a first connecting piece, a second connecting piece and a pin. The upper end of the first connecting piece is slidably connected to the cover plate , The lower end passes through the first perforation at the upper end of the first section steel, and the lock ring at the tail of the first connecting piece passes through the first side hole on the right side of the first section steel, and the upper end of the second connecting piece is slidably connected to the cover plate , The lower end passes through the second perforation at the upper end of the second section steel and the lock ring at the tail of the second connecting piece passes through the second side hole on the left side of the second section steel. The lock ring at the rear of the first connecting piece and the first The lock rings at the tails of the two connecting pieces are arranged in a staggered manner, and the bolts are inserted from above the cover plate and simultaneously inserted into the lock ring at the tail of the first connecting piece and the lock ring at the tail of the second connecting piece, so as to realize the connection between the cover plate and the first section steel and the second section. Interlocking between steel profiles.

Furthermore, the specific structure for realizing the sliding connection of the first connecting member and the cover plate is as follows: the cover plate is provided with a first sliding groove, the first sliding groove is provided with a first sliding rail, and the first sliding groove is provided with a first sliding rail. A first sliding block is arranged on the top of a connecting piece, and the first sliding block is sleeved on the first sliding rail and can slide along the first sliding rail.

Furthermore, buffer springs are respectively provided between the two ends of the first sliding block and the first sliding groove.

Furthermore, the specific structure for realizing the sliding connection of the second connecting member and the cover plate is as follows: the cover plate is provided with a second sliding groove, the second sliding groove is provided with a second sliding rail, and the first sliding groove is provided with a second sliding rail. A second sliding block is arranged on the top end of the two connecting pieces, and the second sliding block is sleeved on the second sliding rail and can slide along the second sliding rail.

Furthermore, buffer springs are respectively provided between the two ends of the second sliding block and the second sliding groove.

Furthermore, the cover plate is provided with an insertion hole for the insertion pin to penetrate, and the first sliding groove and the second sliding groove are symmetrically arranged on both sides of the insertion hole.

Furthermore, an elastic material is filled between the cover plate, the first section steel and the second section steel, and the elastic material is polyurethane sealant, silicone sealant or polysulfide sealant.

The beneficial effects of the utility model have at least the following points:

In the utility model, the first section steel and the second section steel are installed on both sides of the expansion joint and welded with the steel bars of the bridge, and then the cover plate is covered on the upper end of the expansion joint. The first perforation at the upper end of the section steel and the lock ring at the tail of the first connecting piece pass through the first side hole on the right side of the first section steel and the lock ring of the second connecting piece that passes through the second side hole of the second section steel. The bolt is inserted from above the cover plate and at the same time inserted into the lock ring at the tail of the first connector and the lock ring at the tail of the second connector, so as to realize the interlocking between the cover plate and the first and second steel profiles; The first section steel and the second section steel can be detachably connected, which is convenient for installation and maintenance, and the structure is stable and the bearing capacity is good;

More preferably, there are buffer springs at both ends of the first slide block, and buffer springs are provided at both ends of the second slide block, which can respond to the deformation of the expansion joint and avoid potential safety hazards caused by cracks in the expansion joint;

More preferably, the elastic filling material is filled between the first section steel and the second section steel, and the elastic filling material is one of polyurethane sealant, silicone sealant and polysulfide sealant, which meets the needs of the expansion and deformation of the bridge body. It also improves the life of bridge expansion joints, reduces the difficulty of maintenance of bridge expansion joints, shortens the construction period, and reduces daily maintenance and cleaning work; in addition, the elastic filling material has a good damping and vibration reduction function, which effectively improves the stability of the road surface. Reduce the impact of vehicle jumping, thereby increasing the life of the bridge; at the same time, during maintenance, for the damaged sealing rubber belt, it is not necessary to replace the elastic filling material directly.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the utility model;

Figure 2 is an enlarged view of A1 in Figure 1 (the buffer spring is not shown in the figure);

Figure 3 is a schematic view of the structure of the utility model in the A-A direction;

Figure 4 is an enlarged view of A2 in Figure 3;

Figure 5 is an enlarged view of A3 in Figure 3;

Figure 6 is a schematic view of the structure of the first section steel of the present invention;

Fig. 7 is a schematic diagram of the structure in the direction B-B in Fig. 6;

Fig. 8 is a schematic diagram of the structure in the direction C-C in Fig. 6;

The parts in the drawings are marked as follows:

Telescopic device 1, cover plate 2, first sliding groove 21, first sliding rail 211, first sliding block 212, second sliding groove 22, second sliding rail 221, second sliding block 222, insertion hole 23, first Section steel 3, first perforation 31, first side hole 32, second section steel 4, second perforation 41, second side hole 42, mounting structure 5, first connector 51, lock ring 511 at the end of the first connector, The second connecting piece 52, the lock ring 521 at the tail of the second connecting piece, the plug 53 and the buffer spring 6.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer and clearer definition of the scope of protection of the utility model. .

Example: A bridge expansion joint structure, as shown in Figures 1 to 8, including expansion joints, the expansion joints are provided with an expansion device 1, the expansion device includes a cover plate 2 and section steel, the cover plate and the section steel Removable connection; the section steel includes a first section steel 3 and a second section steel 4 arranged on both sides of the expansion joint, the cover plate is arranged above the expansion joint, and the cover plate is flush with the bridge deck;

The upper end of the first section steel is provided with a first perforation 31, and the right side is provided with a first side hole 32;

The upper end of the second section steel is provided with a second perforation 41, and the right side is provided with a second side hole 42;

A number of installation structures 5 are evenly provided between the cover plate and the section steel. The installation structure includes a first connecting piece 51, a second connecting piece 52 and a pin 53. The upper end of the first connecting piece is connected to the The cover plate is slidably connected, the lower end passes through the first through hole 31 and the lock ring 511 at the tail of the first connector passes through the first side hole 32. The upper end of the second connector is slidably connected to the cover plate, and the lower end passes through the first side hole 32. There are two through holes 41 and the lock ring 521 at the tail of the second connector passes through the second side hole 42, and the lock ring at the tail of the first connector and the lock ring at the tail of the second connector are arranged in a staggered manner. The lock ring at the tail of the first connector and the lock ring at the tail of the second connector are inserted above the cover plate and at the same time, so as to realize the interlocking between the cover plate and the first section steel and the second section steel.

The first section steel and the second section steel are symmetrically arranged section steels with the same structure.

The specific structure for realizing the sliding connection of the first connecting member and the cover plate is: the cover plate is provided with a first sliding groove 21, the first sliding groove is provided with a first sliding rail 211, and the first connection The top end of the piece is provided with a first sliding block 212, which is sleeved on the first sliding rail and can slide along the first sliding rail.

A buffer spring 6 is respectively provided between the two ends of the first sliding block and the first sliding groove.

The specific structure for realizing the sliding connection of the second connecting member and the cover plate is: the cover plate is provided with a second sliding groove 22, the second sliding groove is provided with a second sliding rail 221, and the second connection The top end of the piece is provided with a second sliding block 222, which is sleeved on the second sliding rail and can slide along the second sliding rail.

A buffer spring 6 is respectively provided between the two ends of the second sliding block and the second sliding groove.

The cover plate is provided with an insertion hole 23 for the insertion of the pin, and the first sliding groove and the second sliding groove are symmetrically arranged on both sides of the insertion hole.

An elastic material (not shown in the figure) is filled between the cover plate, the first section steel and the second section steel, and the elastic material is polyurethane sealant, silicone sealant or polysulfide sealant.

The working principle of the utility model is as follows:

First install the first section steel and the second section steel on both sides of the expansion joint and weld them with the steel bars of the bridge, and then cover the cover plate on the upper end of the expansion joint. At the same time, the lower end of the first connecting piece of the cover plate passes through the upper end of the first section steel The first perforation and the lock ring at the tail of the first connecting member pass through the first side hole on the right side of the first section steel to combine with the lock ring of the second connecting member passing through the second side hole of the second section steel, and then the bolt is self-covered The lock ring at the tail of the first connector and the lock ring at the tail of the second connector are inserted above the plate at the same time, so as to realize the interlocking between the cover plate and the first and second section steels.

The above are only the embodiments of the present utility model, and do not therefore limit the scope of the present utility model. Any equivalent structural transformation made using the content of the utility model description and drawings, or directly or indirectly applied to other related technical fields , The same reason is included in the scope of patent protection of this utility model.

Claims

A bridge expansion joint structure, which is characterized in that it includes expansion joints, the expansion joints are provided with expansion devices, the expansion devices include a cover plate and a section steel, the cover plate is detachably connected to the section steel; the section steel includes The first section steel and the second section steel arranged on both sides of the expansion joint, the cover plate is arranged above the expansion joint, and the cover plate is flush with the bridge deck;

A number of installation structures are evenly provided between the cover plate and the section steel. The installation structure includes a first connecting piece, a second connecting piece and a pin. The upper end of the first connecting piece is slidably connected to the cover plate , The lower end passes through the first perforation at the upper end of the first section steel, and the lock ring at the tail of the first connecting piece passes through the first side hole on the right side of the first section steel, and the upper end of the second connecting piece is slidably connected to the cover plate , The lower end passes through the second perforation at the upper end of the second section steel and the lock ring at the tail of the second connecting piece passes through the second side hole on the left side of the second section steel. The lock ring at the rear of the first connecting piece and the first The lock rings at the tails of the two connecting pieces are arranged in a staggered manner, and the bolts are inserted from above the cover plate and simultaneously inserted into the lock ring at the tail of the first connecting piece and the lock ring at the tail of the second connecting piece, so as to realize the connection between the cover plate and the first section steel and the second section. Interlocking between steel profiles.
The bridge expansion joint structure according to claim 1, wherein the specific structure for realizing the sliding connection of the first connecting member and the cover plate is: the cover plate is provided with a first sliding groove, and the The first sliding groove is provided with a first sliding rail, the top of the first connecting member is provided with a first sliding block, and the first sliding block is sleeved on the first sliding rail and can slide along the first sliding rail.
The bridge expansion joint structure according to claim 2, characterized in that: buffer springs are respectively provided between the two ends of the first sliding block and the first sliding groove.
The bridge expansion joint structure according to claim 2, wherein the specific structure for realizing the sliding connection of the second connecting member and the cover plate is: the cover plate is provided with a second sliding groove, and the The second sliding groove is provided with a second sliding rail, and the top end of the second connecting member is provided with a second sliding block, and the second sliding block is sleeved on the second sliding rail and can slide along the second sliding rail.
The bridge expansion joint structure of claim 4, wherein a buffer spring is provided between the two ends of the second sliding block and the second sliding groove, respectively.
The bridge expansion joint structure according to claim 4, characterized in that: the cover plate is provided with an insertion hole for the plug to penetrate, and the first sliding groove and the second sliding groove are symmetrically arranged with the insertion hole On both sides.
The bridge expansion joint structure according to claim 1, characterized in that: the cover plate, the first section steel and the second section steel are filled with elastic materials, and the elastic materials are polyurethane sealant, silicone Sealant or polysulfide sealant.