Bridge expansion joint structure

Abstract

The utility model discloses a bridge expansion joint structure, which relates to the field of traffic engineering, aims to solve the problem that the traffic is greatly influenced by the replacement of rubber strips of an expansion joint, and adopts the technical scheme that the bridge expansion joint structure comprises two steel members, an expansion joint is formed between the two steel members, a plurality of rubber strips are arranged in the expansion joint, and caulking grooves are formed in the steel members; when the rubber strip is damaged and needs to be replaced, people can close the lane where the rubber strip needs to be replaced, then separate the clamping block from the steel member and replace the rubber strip, and when the rubber strip is replaced, the rubber strip can be replaced by the clamping block, so that the rubber strip can be replaced conveniently. When the rubber strip is used, only the lane at the damaged part of the rubber strip needs to be closed, other lanes cannot be influenced, the chloroprene rubber has good weather resistance, and the rubber strip made of the chloroprene rubber has long service life.

Description

Technical Field

[0001] The utility model relates to the field of traffic engineering, and more specifically, it relates to a bridge expansion joint structure. Background Technique

[0002] Bridges are common traffic facilities in people's daily lives. Bridges are buildings erected to cross mountain streams, poor geological conditions or meet other traffic needs to make passage more convenient. Bridges usually include bridge decks, bridge piers and fences. Motor vehicle lanes and non-motor vehicle lanes are usually arranged on the bridge deck. The bridge deck is formed by splicing several segmental beams. During use, the segmental beams will undergo telescopic deformation due to factors such as temperature changes and load effects. When adjacent two segmental beams undergo telescopic deformation, it will cause cracking deformation of the bridge deck. Therefore, expansion joints are arranged between adjacent two segmental beams. The expansion joints can better relieve the telescopic deformation. The expansion joints usually include two steel members and rubber strips for preventing dust and rainwater on the bridge deck from entering the inside of the expansion joints. Embedding grooves are provided on the steel members, and both ends of the rubber strips are embedded in the embedding grooves.

[0003] During the use of the rubber strips, affected by temperature changes, light irradiation, etc., some positions will appear aging, cracking and other phenomena, resulting in a reduction in the protection performance of the rubber strips for the expansion joints. People need to regularly replace the damaged rubber strips. In the prior art, to replace the rubber strips, people need to use a scraper to shovel out the old rubber strips from the expansion joints, and then use tools such as sticks to embed the new rubber strips into the embedding grooves. During this replacement process, people will close the motor vehicle lanes and non-motor vehicle lanes penetrated by the expansion joints and then disassemble and install the rubber strips. This replacement process has a greater impact on the traffic on the bridge deck.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Utility Model

[0005] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a bridge expansion joint structure.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A bridge expansion joint structure includes two steel members arranged facing each other. An expansion joint is formed between the two steel members. A plurality of rubber strips are arranged in the expansion joint along the length direction of the steel members. Embedding grooves are provided on the steel members. A plurality of clamping blocks are detachably connected to the steel members. Both sides of the rubber strips are fixed between the clamping blocks and the inner walls of the embedding grooves.

[0007] The utility model is further provided as follows: A first counterbore is provided on the top surface of the clamping block. A threaded hole is provided on the bottom wall of the embedding groove. A through hole is provided on the rubber strip. The first counterbore, the through hole and the threaded hole are jointly used for a bolt to pass through.

[0008] The present utility model is further configured as follows: a counterbore two is formed in the clamping block, a round hole coaxial with the counterbore two is formed in the top surface of the steel member, and internal threads are formed on the inner wall of the round hole.

[0009] The present utility model is further configured as follows: a fixing ring for maintaining the inner diameter of the perforation is fixedly connected to the inner wall of the perforation, and the height of the fixing ring is less than the thickness of the rubber strip.

[0010] The present utility model is further configured as follows: inner grooves are formed on the mutually facing side walls of two adjacent rubber strips, and connecting members for closing the gaps between the two rubber strips are arranged in the inner grooves.

[0011] The present utility model is further configured as follows: the outer surface of the connecting member is provided with inclined lines for abutting against the inner wall of the inner groove.

[0012] The present utility model is further configured as follows: a rubber pad is arranged on the side wall of the clamping block close to the steel member, and the rubber pad is used for closing the gap between the side wall of the embedding groove and the clamping block.

[0013] The present utility model is further configured as follows: the rubber strip is made of chloroprene rubber.

[0014] To sum up, the present utility model has the following beneficial effects: when the rubber strip is damaged and needs to be replaced, people close the lane where the rubber strip to be replaced is located, and then separate the clamping block from the steel member. At this time, the limit of the rubber strip by the clamping block and the inner wall of the embedding groove disappears, and people can replace the rubber strip. The rubber strip is set into several pieces and its length is set to one-third of the width of the motor vehicle lane, so that when people replace the rubber strip, only the lane at the damaged part needs to be closed, without affecting other lanes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a partial cross-sectional view of the present utility model for showing the steel member, the clamping block and the rubber strip;

[0017] Figure 3 is a schematic structural diagram of the rubber strip in the present utility model for showing the rubber strip and the connecting member.

[0018] In the figure: 1. Steel member; 2. Expansion joint; 3. Rubber strip; 4. Embedding groove; 5. Clamping block; 6. Counterbore one; 7. Threaded hole; 8. Perforation; 9. Counterbore two; 10. Round hole; 11. Fixing ring; 12. Inner groove; 13. Connecting member; 14. Rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0020] A bridge expansion joint structure, as Figure 1 and Figure 2 shown, includes two steel members 1 and segment beams respectively fixed on the steel members 1. There is an expansion joint 2 formed between the two steel members 1. A number of rubber strips 3 are arranged in the expansion joint 2 along the length direction of the steel members 1. Embedded grooves 4 are formed on the steel members 1. The cross-section of the steel members 1 is L-shaped. A number of clamping blocks 5 are detachably connected to the steel members 1. Both sides of the rubber strip 3 are fixed between the clamping blocks 5 and the inner wall of the embedded groove 4. The length of the clamping block 5 is equal to the length of the rubber strip 3. The segment beam is provided with a motor vehicle lane and a non-motor vehicle lane. The length of the rubber strip 3 is one-third of the width of the motor vehicle lane. When the rubber strip 3 is damaged and needs to be replaced, people close the lane where the rubber strip 3 to be replaced is located, and then remove the clamping block 5 to separate the clamping block 5 from the steel member 1. At this time, the limit of the clamping block 5 and the inner wall of the embedded groove 4 on the rubber strip 3 disappears, and people can replace the rubber strip 3. The rubber strip 3 is set into several pieces and its length is set to one-third of the width of the motor vehicle lane, so that when people replace the rubber strip 3, only the lane at the damaged part needs to be closed, without affecting other lanes. A counterbore 6 is formed on the top surface of the clamping block 5. A threaded hole 7 is formed on the bottom wall of the embedded groove 4. A through hole 8 is formed on the rubber strip 3. The counterbore, the through hole 8 and the threaded hole 7 are jointly used for the bolt to pass through. After people complete the replacement of the rubber strip 3, they can first pass the bolt through the round hole 10 and the counterbore, then align the bolt with the threaded hole 7, and then screw the thread into the threaded hole 7. The clamping block 5 fixed by the bolt fixes the rubber strip 3 between the inner wall of the embedded groove 4 and the clamping block 5, so that the rubber strip 3 is not easily separated from the steel member 1, so that the rubber strip 3 can better prevent dust and water from entering the expansion joint 2. When the vehicle passes through the expansion joint 2, the bolt head sunk in the counterbore will not affect the wheels.

[0021] As Figure 2 and Figure 3As shown in the figure, a counterbore 9 is formed in the clamping block 5, and a round hole 10 coaxial with the counterbore 9 is formed in the top surface of the steel member 1. Internal threads are formed on the inner wall of the round hole 10. When the clamping block 5 is fixed on the steel member 1, when the vehicle passes over the clamping block 5, the clamping block 5 is well supported by the steel member 1, so that the pressure of the vehicle is not likely to squeeze the rubber strip 3, thus protecting the rubber strip 3 well. A fixing ring 11 for maintaining the inner diameter of the through hole 8 is adhesively connected to the inner wall of the through hole 8. The height of the fixing ring 11 is less than the thickness of the rubber strip 3. When the expansion joint 2 undergoes expansion and contraction deformation, it will drive the rubber strip 3 fixed at both ends on the steel member 1 to deform. The inner wall of the through hole 8 is easily pulled when the rubber strip 3 deforms. The setting of the fixing ring 11 can well maintain the diameter of the inner wall of the through hole 8 when the inner wall of the through hole 8 is pulled. At the same time, it makes the inner wall of the through hole 8 not in direct contact with the bolt, protecting the inner wall of the through hole 8 well. Inner grooves 12 are formed on the mutually facing side walls of two adjacent rubber strips 3, and a connecting member 13 for closing the gap between the two rubber strips 3 is adhesively connected in the inner grooves 12. When people regularly inspect the rubber strip 3 and find that a rubber strip 3 is damaged, the rubber strip 3 needs to be replaced. People first remove the clamping blocks 5 on the rubber strip 3 and the adjacent rubber strips 3 on both sides, then take out the damaged rubber strip 3 from the embedded groove 4, cut the connecting member 13 with a blade, and then cut off the remaining connecting member 13 in the inner grooves 12 of the adjacent rubber strips 3 on both sides. After pasting the new rubber strip 3 with the connecting member 13, insert it into the inner grooves 12 of the adjacent rubber strips 3, and cover the clamping block 5 on the rubber strip 3. The setting of the connecting member 13 can well close the gap between two adjacent rubber strips 3 during the expansion and contraction process of the rubber strip 3, so that external dust and water are not easily introduced into the inner wall of the expansion joint 2. The outer surface of the connecting member 13 is provided with inclined lines for abutting against the inner wall of the inner groove 12. When people apply special glue on the connecting member 13 and place the connecting member 13 in the inner groove 12, the unfixed glue cannot fix the connecting member 13 to the inner wall of the inner groove 12. At this time, the setting of the inclined lines can increase the friction force between the inner wall of the inner groove 12 and the connecting member 13, so that the connecting member 13 can well close the gap between two adjacent rubber strips 3. A rubber pad 14 is provided on the side wall of the clamping block 5 close to the steel member 1. The rubber pad 14 is used to close the gap between the side wall of the embedded groove 4 and the clamping block 5. When the clamping block 5 is fixed on the steel member 1, the rubber pad 14 preferably fills the gap between the side wall of the embedded groove 4 and the clamping block 5, so that dust and water cannot pass through the gap between the side wall of the embedded groove 4 and the clamping block 5. The rubber strip 3 is made of chloroprene rubber. Chloroprene rubber has good weather resistance. When the rubber strip 3 made of chloroprene rubber is used outdoors, it is not easy to age, which preferably improves the service life of the rubber strip 3.

[0022] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A bridge expansion joint structure, comprising two steel components (1), an expansion joint (2) being formed between the two steel components (1), characterized in that: The expansion joint (2) is provided with a plurality of rubber strips (3) arranged along the length direction of the steel component (1); the steel component (1) is provided with an embedding groove (4); the steel component (1) is detachably connected with a plurality of clamping blocks (5); and the two sides of the rubber strips (3) are fixed between the clamping blocks (5) and the inner wall of the embedding groove (4).

2. A bridge expansion joint structure according to claim 1, characterized in that: The top surface of the clamping block (5) is provided with a countersunk hole (6), the bottom wall of the embedding groove (4) is provided with a threaded hole (7), and the rubber strip (3) is provided with a through hole (8). The countersunk hole (6), the through hole (8) and the threaded hole (7) are used to be passed through by bolts.

3. A bridge expansion joint structure according to claim 2, characterized in that: The clamping block (5) is provided with a second countersunk hole (9), and the top surface of the steel component (1) is provided with a circular hole (10) coaxially arranged with the second countersunk hole (9), and the inner wall of the circular hole (10) is formed with an internal thread.

4. A bridge expansion joint structure according to claim 3, characterized in that: A fixing ring (11) for maintaining the inner diameter of the through hole (8) is fixedly connected to the inner wall of the through hole (8), and the height of the fixing ring (11) is less than the thickness of the rubber strip (3).

5. A bridge expansion joint structure according to claim 4, characterized in that: An inner groove (12) is provided on one side wall of two adjacent rubber strips (3) facing each other, and a connecting piece (13) for closing the gap between the two rubber strips (3) is provided in the inner groove (12).

6. A bridge expansion joint structure according to claim 5, characterized in that: The outer surface of the connecting piece (13) is provided with oblique lines for contacting the inner wall of the inner groove (12).

7. The bridge expansion joint structure according to claim 1, characterized in that: A rubber pad (14) is provided on the side wall of the clamping block (5) close to the steel component (1), and the rubber pad (14) is used to close the gap between the side wall of the embedding groove (4) and the clamping block (5).

8. The bridge expansion joint structure according to claim 1, characterized in that: The rubber strip (3) is made of chloroprene rubber.

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