Expansion joint device for combined bridge

Abstract

The utility model provides a combined type expansion joint device for a bridge, which relates to the technical field of bridge construction, and comprises a box girder main body and a first boundary beam main body, the side surface of the box girder main body is provided with the first boundary beam main body, the top surface and the bottom surface of the first boundary beam main body are both provided with T-shaped mounting grooves, and the inner bottom surface of each T-shaped mounting groove is uniformly provided with positioning grooves in an array manner; a limiting circular groove is formed in the bottom face of each positioning groove, damping spring rods are arranged on the top faces of the T-shaped mounting grooves, spring sliding blocks are arranged at the bottom ends of the damping spring rods, the damping spring rods and the positioning grooves are in one-to-one correspondence in position, second edge beam bodies are arranged at the bottoms of the first edge beam bodies in a clamped mode, and the first edge beam bodies are arranged between the box beam bodies for installation of the expansion joints. The damping spring rod is installed through cooperation of the spring sliding block, the positioning groove and the limiting circular groove, the damping spring rod and the first boundary beam body can be rapidly disassembled and installed, compared with a traditional fixed structure, the damping spring rod can be rapidly replaced and overhauled, the structure is simple, and replacement and installation are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an expansion joint device for a combined bridge. Background Technique

[0002] According to a steel plate combined bridge expansion joint device disclosed in Chinese Patent Publication No. CN206545167U, which includes a left bridge body and a right bridge body. On the opposite sides of the left bridge body and the right bridge body, receiving platforms are installed. A first telescopic column is installed in the inner cavity of the receiving platform near the top. A connecting piece is provided at the bottom of the receiving platform. An outer receiving sleeve is movably installed inside the connecting piece. A buffer rod is slidably installed inside the outer receiving sleeve. A first shock-absorbing spring is also provided in the inner cavity of the outer receiving sleeve. One end of the buffer rod away from the outer receiving sleeve is movably installed with a fixed clamping sleeve. A second telescopic column is installed inside the fixed clamping sleeve. By arranging a second leaf spring reversely inside the first leaf spring, cooperating with the second telescopic column arranged at the bottom of the first leaf spring, and arranging the outer receiving sleeve, the buffer rod and the first shock-absorbing spring, the earthquake resistance buffering ability and the recovery ability of the bridge expansion joint are effectively improved, and the service life of the bridge expansion joint is effectively prolonged.

[0003] The following technical problems exist in the above patent document and the prior art:

[0004] 1. When buffering the bridge deck by installing a spring, since the installation position of the spring is fixed and cannot be quickly disassembled, when the spring is damaged or fails, it cannot be quickly disassembled and replaced;

[0005] 2. When installing multiple side beams, they need to be installed one by one, and multiple positionings are required during installation. It is easy to have a large gap in the vertical direction, and the adjacent side beams cannot be installed as a whole, resulting in inconvenient installation of the side beams and reduced compressive strength. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the disadvantages in the prior art that the buffer spring is not easy to quickly disassemble and assemble and multiple side beam bodies need to be positioned and installed multiple times, and an expansion joint device for a combined bridge is proposed.

[0007] To achieve the above object, the utility model adopts the following technical solutions: A telescopic joint device for a combined bridge includes a box girder main body and a first side girder main body. The first side girder main body is provided on the side of the box girder main body. T-shaped installation grooves are provided on both the top surface and the bottom surface of the first side girder main body. Positioning grooves are evenly arranged in an array on the inner bottom surface of the T-shaped installation grooves. Limiting circular grooves are provided on the bottom surfaces of the positioning grooves. Damping spring rods are provided on the top surface of the T-shaped installation grooves. Spring sliders are provided at the bottom ends of the damping spring rods, and the spring sliders are located inside the positioning grooves and are engaged with the limiting circular grooves. The damping spring rods correspond to the positioning grooves one by one. A second side girder main body is snap-fitted to the bottom of the first side girder main body.

[0008] Preferably, T-shaped installation blocks are provided on both the top surface and the bottom surface of the second side girder main body, and the T-shaped installation blocks are in clearance fit with the T-shaped installation grooves on the bottom surface of the first side girder main body.

[0009] Preferably, telescopic teeth are linearly arranged in an array on both the side surfaces of the first side girder main body and the second side girder main body. A plurality of installation ribs are provided on one side of the first side girder main body and the second side girder main body away from the telescopic teeth, and the installation ribs are fixed to the side surface of the box girder main body.

[0010] Preferably, two groups are provided in the same plane of the first side girder main body and the second side girder main body. The telescopic teeth between adjacent first side girder main bodies are staggered, and the telescopic teeth of the first side girder main body and the second side girder main body on the same side are offset.

[0011] Preferably, the shape between adjacent telescopic teeth is the same as the shape of the telescopic teeth. The outer edges of the first side girder main body and the second side girder main body are both polished with sandpaper.

[0012] Preferably, the installation ribs are formed by bending threaded steel, and the distance between adjacent installation ribs is the same.

[0013] Preferably, the height and thickness of adjacent damping spring rods are the same, and the lengths and shapes of the first side girder main body and the second side girder main body are the same.

[0014] Beneficial effects

[0015] In the utility model, the first side girder main body is arranged between the box girder main bodies for the installation of the telescopic joint. The damping spring rods are arranged on the surface of the first side girder main body to buffer and support the bridge deck, increasing the buffering force of the bridge deck and reducing direct stress damage. At the same time, the damping spring rods are installed through the cooperation of the spring sliders with the positioning grooves and the limiting circular grooves, enabling the entire damping spring rods and the first side girder main body to be quickly disassembled and installed. Compared with the traditional fixed structure, the damping spring rods can be quickly replaced and repaired, with a simple structure and convenient replacement and installation.

[0016] In the present utility model, the bottom surface of the first side beam main body is used to install the second side beam main body through the cooperation of a T-shaped installation groove and a T-shaped installation block, realizing the assembly of multiple side beam main bodies between adjacent box girder main bodies. At the same time, during installation, the telescopic teeth of the first side beam main body and the second side beam main body in the adjacent vertical direction are installed in a staggered manner, reducing the gap, ensuring the integration of the entire structure, increasing the compressive strength and anti-bending strength of the entire expansion joint device, having high stability, realizing rapid overall installation positioning, and facilitating the stable support and use of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the installation structure diagram of the present utility model;

[0018] Figure 2 is the installation structure diagram of the first side beam main body of the present utility model;

[0019] Figure 3 is the structure diagram of the first side beam main body of the present utility model;

[0020] Figure 4 is of the present utility model Figure 3 enlarged view of part A;

[0021] Figure 5 is the assembly structure diagram of the first side beam main body and the second side beam main body of the present utility model;

[0022] Figure 6 is the structure diagram of the surface part of the first side beam main body of the present utility model.

[0023] LEGEND DESCRIPTION:

[0024] 1. Box girder main body; 2. Installation rib; 3. First side beam main body; 4. T-shaped installation groove; 5. Positioning groove; 6. Limiting circular groove; 7. Second side beam main body; 8. T-shaped installation block; 9. Damping spring rod; 10. Spring slider; 11. Telescopic tooth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the following further elaborates the present utility model in combination with specific embodiments and drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0026] The following describes the specific embodiments of the present utility model in combination with the drawings. Specific Embodiment 1:

[0028] Refer to Figures 1-6, An expansion joint device for a combined bridge, comprising a box girder main body 1 and a first side girder main body 3. The first side girder main body 3 is arranged on the side of the box girder main body 1. T-shaped installation grooves 4 are provided on both the top surface and the bottom surface of the first side girder main body 3. Positioning grooves 5 are uniformly arranged in an array on the bottom surface inside the T-shaped installation grooves 4. Limiting circular grooves 6 are provided on the bottom surface of the positioning grooves 5. Damping spring rods 9 are provided on the top surface of the T-shaped installation grooves 4. Spring sliders 10 are provided at the bottom ends of the damping spring rods 9, and the spring sliders 10 are located inside the positioning grooves 5 and are engaged with the limiting circular grooves 6. The damping spring rods 9 correspond to the positioning grooves 5 one by one. A second side girder main body 7 is clamped at the bottom of the first side girder main body 3. The damping spring rods 9 are mainly used for buffering and supporting the installed bridge deck. During installation, the damping spring rods 9 slide into the position coinciding with the positioning grooves 5 along one end of the T-shaped installation grooves 4 on the top surface of the first side girder main body 3 through the spring sliders 10 at their bottom ends and are pushed downward, so that the spring sliders 10 are located inside the positioning grooves 5, and the position where the positioning grooves 5 coincide with the limiting circular grooves 6 is maintained, so that the bottom surface of the spring sliders 10 coincides with the bottom surface of the limiting circular grooves 6. Then the damping spring rods 9 are rotated, so that the ends of the spring sliders 10 are rotated into the limiting circular grooves 6, and the two ends of the spring sliders 10 are limited by the top surface of the limiting circular grooves 6 to prevent detachment in the vertical direction and maintain the stability of the installation, enabling the spring damping rods to be quickly disassembled and assembled with the first side girder main body 3 through their own structures without the aid of other tools, facilitating the quick disassembly and installation of the damping spring rods 9, realizing the maintenance and replacement of the damping spring rods 9. In actual use, a plurality of damping spring rods 9 are arranged on the surface of the first side girder main body 3. The damping spring rods 9 are engaged with the positioning grooves 5 and the limiting circular grooves 6 on the first side girder main body 3 through the spring sliders 10 at their bottom ends to form a stable support structure. When the bridge deck is vibrated by vehicles or the environment, the damping spring rods 9 can absorb and relieve these vibrations, protect the bridge deck structure from direct impact, increase the buffering force of the bridge deck, reduce stress damage, and improve the service life of the bridge.

[0029] To increase the compressive strength of the entire expansion joint device, in addition to selecting materials with greater stress for the overall material of the first side beam body 3, during actual construction, generally, multiple first side beam bodies 3 are installed vertically. However, when the traditional first side beam body 3 is constructed, it is installed by direct stacking, and each adjacent first side beam body 3 needs to be installed one by one, which is not easy to position. There is a too large vertical gap between them during installation, resulting in the problem of non-concentrated compressive stress. Therefore, in this application, T-shaped installation blocks 8 are provided on both the top and bottom surfaces of the second side beam body 7, and the T-shaped installation blocks 8 are in clearance fit with the T-shaped installation grooves 4 on the bottom surface of the first side beam body 3. The T-shaped installation grooves 4 at the bottom of the first side beam body 3 are in clearance fit with the T-shaped installation blocks 8 on the top of the second side beam body 7, realizing the stable connection of the two side beam bodies. Align the T-shaped installation blocks 8 of the second side beam body 7 with the T-shaped installation grooves 4 of the first side beam body 3 and insert them to ensure tight fit between the two. Through this structure, the vertical clamping installation of multiple first side beam bodies 3 and second side beam bodies 7 can be realized. After installation, the first side beam body 3 and the second side beam body 7 are an integral structure, and the direct integral installation between adjacent box girder bodies 1 can be carried out without multiple positioning. While realizing rapid installation, the gap between the first side beam body 3 and the second side beam body 7 can be reduced. The design of the T-shaped installation groove 4 and the T-shaped installation block 8 provides a reliable connection interface, facilitating the assembly and disassembly of the side beam body, realizing the assembly of multiple side beam bodies between adjacent box girder bodies 1, and increasing the stability and compressive strength of the overall structure.

[0030] To reduce the gap between the first side beam bodies 3 during bridge support, expansion teeth 11 are linearly and arrayedly distributed on both the sides of the first side beam body 3 and the second side beam body 7. On the sides of the first side beam body 3 and the second side beam body 7 away from the expansion teeth 11, a plurality of mounting ribs 2 are provided, and the mounting ribs 2 are fixed to the side surface of the box girder body 1. There are two groups in the same plane of the first side beam body 3 and the second side beam body 7. The expansion teeth 11 between adjacent first side beam bodies 3 are staggered, and the expansion teeth 11 of the first side beam body 3 and the second side beam body 7 on the same side are misaligned. The shape between adjacent expansion teeth 11 is the same as the shape of the expansion teeth 11. The outer edges of the first side beam body 3 and the second side beam body 7 are both polished with sandpaper. The expansion teeth 11 provided on the sides of the first side beam body 3 and the second side beam body 7 reduce the gap through staggered and misaligned distribution, enhancing the integrity and stability of the structure. The mounting ribs 2 are used to fixedly connect the side beam body and the box girder body 1. During the installation process, ensure the staggered and misaligned distribution of the expansion teeth 11, and at the same time, the mounting ribs 2 are firmly fixed to the side surface of the box girder body 1. The design, staggered and misaligned installation of the expansion teeth 11, and the fixing method of the mounting ribs 2 together constitute a stable support structure, reducing the gap, improving the compressive strength and anti-bending strength, and realizing rapid overall installation and positioning, facilitating the stable support use of the bridge.

[0031] Other limiting structures of the entire device are as follows: The installation ribs 2 are formed by bending deformed steel bars. The distances between adjacent installation ribs 2 are the same. The heights and thicknesses of adjacent damping spring rods 9 are the same. The lengths and shapes of the first side beam body 3 and the second side beam body 7 are the same. Specific Embodiment 2:

[0033] Refer to Figures 1-6 , this device has strong compressive strength and anti-bending strength, and can withstand large expansion and contraction deformations caused by temperature changes, vehicle loads, etc. in long-span bridges. The characteristics of the modular expansion joint enable it to be assembled arbitrarily according to a certain modulus according to actual needs, so as to meet the requirements of long-span bridges for expansion amounts. Highway bridges have relatively high requirements for driving comfort and safety. Through the design of the damping spring rod 9, this device effectively reduces the vibration and noise when vehicles pass by, improving driving comfort. At the same time, its overall structure is stable, and it can withstand frequent vehicle loads on highways, ensuring the long-term service performance of the bridge. This device has strong adaptability to curved, sloped, inclined, and wide bridges. Its structural characteristics enable it to maintain stable performance under various complex terrains and bridge structures. The GQF-D160 type bridge expansion device has the characteristic of strong adaptability to curved, sloped, inclined, and wide bridges and can meet the use requirements of various bridge structures. This device is designed with the function of quick disassembly and installation, which is convenient for maintaining and replacing components during the use of the bridge, improving the maintenance efficiency and service life of the bridge. For bridges that need to quickly resume traffic, this design can significantly shorten the construction time and reduce the impact on traffic. The design of the damping spring rod 9 effectively reduces the vibration and noise when vehicles pass by. For bridges with high requirements for the driving environment, such as bridges near residential areas, this device can significantly improve the driving environment and the quality of life of residents. This combined bridge expansion joint device is particularly suitable for long-span bridges, highway bridges, curved, sloped, inclined, and wide bridges, and bridges with high requirements for driving noise and vibration. At the same time, its characteristics of quick installation and maintenance also make it have a wide application prospect in various bridge projects that need to quickly resume traffic and reduce construction impacts.

[0034] In summary:

[0035] 1. The first side beam body 3 is arranged between the box girder bodies 1 for installing the expansion joint. The damping spring rod 9 is arranged on the surface of the first side beam body 3 to buffer and support the bridge deck, increasing the buffering force of the bridge deck and reducing direct stress damage. At the same time, the damping spring rod 9 is installed through the cooperation of the spring slider 10 with the positioning groove 5 and the limiting circular groove 6, enabling the entire damping spring rod 9 and the first side beam body 3 to be quickly disassembled and installed. Compared with the traditional fixed structure, the damping spring rod 9 can be quickly replaced and repaired, with a simple structure and convenient replacement and installation;

[0036] 2. The bottom surface of the first side beam main body 3 is used to install the second side beam main body 7 through the cooperation of the T-shaped installation groove 4 and the T-shaped installation block 8, realizing the assembly of multiple side beam main bodies between adjacent box beam main bodies 1. At the same time, during installation, the telescopic teeth 11 of the adjacent first side beam main body 3 and the second side beam main body 7 in the vertical direction are installed in a staggered manner, reducing the gap, ensuring the integration of the entire structure, increasing the compressive strength and anti-bending strength of the entire expansion joint device, having high stability, realizing rapid overall installation and positioning, and facilitating the stable support use of the bridge.

[0037] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0038] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A combined bridge expansion joint device, comprising a box beam body (1) and a first side beam body (3), characterized in that: A first side beam body (3) is provided on the side of the box beam body (1); the top and bottom surfaces of the first side beam body (3) are both provided with T-shaped mounting grooves (4); the bottom surface of the T-shaped mounting groove (4) is provided with positioning grooves (5) evenly distributed in an array; the bottom surface of the positioning groove (5) is provided with a limiting circular groove (6); the top surface of the T-shaped mounting groove (4) is provided with a damping spring rod (9); the bottom end of the damping spring rod (9) is provided with a spring slider (10); and the spring slider (10) is located inside the positioning groove (5) and is engaged with the limiting circular groove (6); the damping spring rod (9) and the positioning groove (5) have a one-to-one correspondence in position; and a second side beam body (7) is engaged with the bottom of the first side beam body (3).

2. The combined bridge expansion joint device according to claim 1, characterized in that: The top and bottom surfaces of the second side beam body (7) are both provided with T-shaped mounting blocks (8), and the T-shaped mounting blocks (8) are clearance-matched with the T-shaped mounting grooves (4) on the bottom surface of the first side beam body (3).

3. The combined bridge expansion joint device according to claim 2, characterized in that: Telescopic teeth (11) are arranged in a linear array on the side surfaces of the first side beam body (3) and the second side beam body (7); a plurality of mounting ribs (2) are arranged on the side of the first side beam body (3) and the second side beam body (7) away from the telescopic teeth (11); and the mounting ribs (2) are fixed to the side surfaces of the box beam body (1).

4. The combined bridge expansion joint device according to claim 3, characterized in that: Two groups of telescopic teeth (11) are arranged in the same plane of the first side beam body (3) and the second side beam body (7); the telescopic teeth (11) between adjacent first side beam bodies (3) are staggered; and the telescopic teeth (11) of the first side beam body (3) and the second side beam body (7) on the same side are staggered.

5. The combined bridge expansion joint device according to claim 4, characterized in that: The shape between adjacent telescopic teeth (11) is the same as the shape of the telescopic teeth (11), and the outer edges of the first side beam body (3) and the second side beam body (7) are both polished with sandpaper.

6. The combined bridge expansion joint device according to claim 3, characterized in that: The installation ribs (2) are formed by bending threaded steel bars, and the spacing between adjacent installation ribs (2) is the same.

7. The combined bridge expansion joint device according to claim 1, characterized in that: The adjacent damping spring rods (9) have the same height and thickness, and the first side beam body (3) and the second side beam body (7) have the same length and shape.

Images