Bearing part for profile steel and bridge expansion joint

Abstract

A bearing part for profile steel comprises a steel plate, the steel plate is concavely provided with a bearing section from top to bottom, the bearing section is filled with corresponding filling materials, and the bearing section extends outwards horizontally or obliquely upwards to form a cantilever used for being hung on the corresponding profile steel. The cantilever comprises a mounting section which is arranged at the tail end and at least extends downwards to form a part capable of being embedded into the corresponding profile steel. The bridge expansion joint has the advantages that the bearing section of the bearing piece enables the upper end face and the lower end face of the filling material to be planes, and the filling material can be stretched up and down more evenly in the expansion deformation state of the bridge expansion joint; the mounting section of the bearing part can be embedded into the corresponding profile steel, the bearing part can avoid the problem that the two sides of the bridge expansion joint are weak in stress, when the bridge expansion joint is stressed, the bearing part can avoid large noise caused by looseness of the mounting section, meanwhile, the bearing part can also prevent water or other sundries from entering the expansion joint, and the service life of the bridge expansion joint is prolonged. And the waterproof and dustproof performance of the bearing part is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge expansion equipment technical field especially relates to a kind of bearing for shaped steel and bridge expansion joint. BACKGROUND

[0002] In the process of bridge construction, bridge expansion joint is an important component of bridge structure. Bridge expansion joint refers to the interval set between the end of two bridge decks, the end beam end of bridge deck and abutment or the hinged position of bridge, the purpose is to adapt to the thermal expansion and contraction between bridge decks or bridge deck and abutment, to meet the deformation requirements of bridge deck. Bridge expansion joint should be able to freely expand in both directions parallel and perpendicular to the bridge axis, and bridge expansion device should also be provided to realize the connection of bridge deck.

[0003] The existing bridge expansion joint is shown in the Chinese utility model with patent No. CN202121857459.5 (authorized publication No. CN215800986U) _ Steel Box Girder Pedestrian Bridge Expansion Device, which includes a pedestrian bridge steel box girder frame, a U-shaped stainless steel plate, a channel steel and an elastic filler. The U-shaped groove structure of the U-shaped stainless steel plate is connected in the expansion joint of the pedestrian bridge steel box girder frame, and the U-shaped stainless steel plate and the two groups of channel steel are provided with an elastic filler. The U-shaped stainless steel plate serves as a carrier for the elastic filler, and the U-shaped stainless steel plate has a certain rigidity and elasticity to realize elastic buffering. It can effectively control the rebound of the pedestrian bridge contraction joint.

[0004] Although the cooperation of the above-mentioned U-shaped stainless steel plate and elastic filler can make the bridge expansion joint have the effect of rebound, but there are still the following defects in the process of use: first, the U-shaped stainless steel plate as the bearing of the elastic filler is provided with a horizontal wall on both sides of the U-shaped groove, and the end of the horizontal wall abuts against the bridge deck pavement filling surface, that is, the horizontal wall is point-connected with the bridge deck pavement filling surface in the expansion joint, so that the stability of the U-shaped stainless steel plate is poor, and the stress of the horizontal wall is weak. When the vehicle drives through the bridge expansion joint, the U-shaped stainless steel plate is easy to shake, and then the bridge expansion joint produces noise, which affects the surrounding environment; second, the U-shaped groove of the U-shaped stainless steel makes the elastic filler in the expansion joint have a flat upper surface and an arc lower surface. Under the condition of expansion and deformation of the bridge, the elastic filler with this shape is stretched unevenly, which affects the use effect of the bridge expansion joint; third, the elastic filler is only filled in the U-shaped groove and part of the horizontal wall, and the remaining part of the horizontal wall and the bridge deck pavement filling surface may have a gap, which may cause the bridge expansion joint to easily seep water or accumulate dust, gravel and other problems, and then affect the use effect of the bridge expansion joint. Therefore, further improvement is needed for the bridge expansion joint. SUMMARY

[0005] The first technical problem to be solved by the utility model is to provide a load bearing for a profile steel which is more stable in structure and less likely to produce noise.

[0006] The second technical problem to be solved by the utility model is to provide a bridge expansion joint which is less likely to seep water while achieving stable connection by using the load bearing.

[0007] The technical scheme adopted by the utility model to solve the first technical problem is: the load bearing for a profile steel comprises a steel plate, the steel plate is concave from top to bottom and has a load bearing section for filling with corresponding filling material, the load bearing section extends outward horizontally or obliquely upward and has a cantilever for being hung on the corresponding profile steel, and the load bearing section is a horizontally arranged steel plate, and the cantilever comprises an installation section arranged at the end and extending downward at least and capable of being embedded into the corresponding profile steel.

[0008] In order to make the cantilever hung on the corresponding profile steel more stable, preferably, the lowest points of the installation sections are on the same horizontal plane and higher than the plane where the load bearing section is located.

[0009] In order to make the stress of the cantilever more reasonable, preferably, the cantilever further comprises a connecting section and an extension section, the left and right ends of the load bearing section extend upward to form two connecting sections, the upper ends of the connecting sections extend horizontally away from the load bearing section to form the extension section, the end of the extension section extends downward to form the installation section, and the connecting sections are arranged parallel to the installation sections.

[0010] The technical scheme adopted by the utility model to solve the second technical problem is: the bridge expansion joint comprises two oppositely arranged profile steels, characterized in that: the load bearing for a profile steel as described above is installed between the two profile steels, the distance between the two profile steels is greater than the length of the load bearing section, the opposite sides of the two profile steels are provided with installation grooves, the heights in the installation grooves are all greater than the length of the installation section, and the installation section can be installed into the corresponding installation groove.

[0011] In order to make the waterproof and dustproof effect of the bridge expansion joint better, preferably, the installation section and the corresponding installation groove are surrounded to form a first filling space for filling the filling material, and a second filling space for filling the filling material above the bearing section is further arranged between the two profile steels, and the first filling space and the second filling space jointly form a filling area. The filling material is an elastic material, and the elastic material is poured into the filling area, so that the connection between the installation section and the installation groove is a surface connection using the elastic material, thereby increasing the connection area of the installation section and the installation groove, and the bearing and the two profile steels form an integral whole, thereby avoiding the problem of water seepage of the bridge expansion joint, and further making the waterproof and dustproof effect of the bridge expansion joint better. Meanwhile, formwork setting can be avoided during the construction of the expansion joint structure, the construction process is reduced, and the concrete on both sides of the expansion joint structure can be poured at the same time, the construction efficiency is improved, and the integrity of the expansion joint structure and the expansion joint structure concrete structure connection is enhanced. In addition, the liquid elastic material is poured into the filling area, and after a period of time, the elastic material becomes a solid, the upper end of the elastic material is lower than the upper end of the profile steel, the elastic material provides a certain deformation space for the bridge expansion joint, and the elastic material can absorb the noise generated by the impact of the vehicle on the bridge expansion device, thereby making the noise reduction effect of the bridge expansion device better.

[0012] In order to avoid the bearing from being separated from the installation groove under the action of force, preferably, the bottom of the installation groove is in a V shape, and the lowest point of the installation section is located at the middle tip of the V-shaped bottom in a natural state of the steel plate. Even if the bearing section is subjected to strong downward pressure, the installation section can only slide on the two side arms of the middle tip of the V-shaped bottom, and finally falls to the middle tip of the V-shaped bottom after force balance, thereby effectively ensuring the connection stability of the bearing. In addition, the installation section is always located in the installation groove, so that the installation section can still be hung in the installation groove when the vehicle passes through the bridge expansion joint or the bridge expansion joint is subjected to thermal expansion and contraction, thereby avoiding the separation of the installation section from the installation groove.

[0013] In order to make the waterproof and dustproof effect of the bridge expansion device better, preferably, the lower portion of the installation groove is further provided with a clamping groove, and a water stop belt is arranged between the two profile steels, and the two ends of the water stop belt are arranged in the clamping grooves of the two profile steels. In order to enable the bearing to protect the water stop belt, the clamping groove is arranged below the installation groove, and the water stop belt is arranged in the clamping groove, so that the water stop belt is arranged below the bearing. The bearing can avoid damage to the water stop belt by gravel or other sundries, so that the water stop belt has better use effect and longer service life.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. The bearing segment of the bearing is a horizontally arranged steel plate, so that the upper end surface and the lower end surface of the filling material in the bearing segment are both flat surfaces, and in the state of expansion and deformation of the bridge expansion joint, the filling material is stretched more uniformly, and the expansion effect of the bridge expansion joint is improved;

[0016] 2. The mounting segment of the bearing is at least partially embedded into the corresponding profile steel, so that the connection between the bearing and the profile steel is more stable, the bearing can avoid the problem of weak stress on both sides of the bridge expansion joint, and when the bridge expansion joint is under pressure, the mounting segment of the bearing can avoid generating a large noise, that is, the bearing can reduce the generation of noise of the bridge expansion joint, and at the same time, the bearing can also avoid water or other sundries from entering the expansion joint, thereby improving the waterproof performance and dustproof performance of the bearing;

[0017] 3. The profile steel is provided with a mounting groove for cantilever mounting, the distance between the two profile steels is greater than the length of the bearing segment, so that in the state that the bearing is extruded by the tool and the two cantilevers, the bearing can be smoothly installed between the two profile steels, and the height in the mounting groove is greater than the length of the mounting segment, so that in the state that the tool releases the two cantilevers, the mounting segment of the cantilever can smoothly enter the mounting groove and be hung in the mounting groove, and the profile steel makes the assembly of the bearing simpler and improves the assembly efficiency of the bridge expansion device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a front view of the embodiment of the utility model;

[0019] Figure 2 is a front view of two profile steels in the embodiment of the utility model;

[0020] Figure 3 is a front view of the bearing in the embodiment of the utility model;

[0021] Figure 4 is a front view of the bearing being extruded and installed between the two profile steels in the embodiment of the utility model;

[0022] Figure 5 is a front view of the bearing being installed between the two profile steels in the embodiment of the utility model. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail in combination with the embodiment of the drawings.

[0024] As shown in the best embodiment of the utility model. Figures 1 to 5

[0025] ​The bridge expansion joint of the embodiment comprises a bearing, two oppositely arranged steel profiles 2 and a waterstop 4, and the bearing and the waterstop 4 are arranged between the two steel profiles 2. The bearing comprises a steel plate 1, and the steel plate 1 is concavely provided with a bearing section 11 for filling with corresponding filling material from top to bottom, the bearing section 11 is a horizontally arranged steel plate, and the bearing section 11 horizontally extends outwardly to form an overhanging arm for being hung on the corresponding steel profile, wherein the overhanging arm comprises a connecting section 12, an extending section 13 and a mounting section 14, the left and right ends of the bearing section 11 respectively extend upwardly to form two connecting sections 12, the upper ends of the connecting sections 12 horizontally extend away from the bearing section 11 to form the extending section 13, and the distal end of the extending section 13 further extends downwardly to form the mounting section 14 which can be partially embedded into the corresponding steel profile 2, and the applicant emphasizes that it is particularly important to arrange the connecting sections 12 parallel to the mounting sections 14, so that the stress direction of the connecting sections 12 is always the same as that of the mounting sections 14, thereby effectively increasing the connection stability between the bearing and the steel profile 2, in addition, the connecting sections 12, the extending section 13 and the mounting sections 14 jointly make the overhanging arm in the shape of a hook, so that the overhanging arm can be hung in the steel profile 2, and the lowest points D1 of the mounting sections 14 are on the same horizontal plane and are higher than the plane on which the bearing section 11 is arranged, which can make the hanging of the overhanging arm more stable, and can also make the bearing section 11 always arranged horizontally, so that the upper and lower end faces of the filling material in the bearing section 11 are both planes, and the filling material is stretched more uniformly in the state of expansion and contraction of the bridge expansion joint, thereby improving the expansion and contraction effect of the bridge expansion joint.

[0026] As Figure 4As shown, the distance D between the two profile steels 2 of the embodiment is greater than the length L1 of the bearing section 11, opposite sides of the two profile steels 2 are provided with mounting grooves 21 and clamping grooves 22, the mounting section 14 of the bearing member can be mounted into the corresponding mounting groove 21, the clamping groove 22 is arranged below the mounting groove 21, and the two ends of the water stop belt 4 are respectively mounted in the corresponding clamping groove 22, that is, the water stop belt 4 is located below the bearing member, and the bearing member can avoid damage to the water stop belt 4 by gravel or other sundries, so that the water stop belt 4 has better use effect and longer service life, and the water stop belt 4 can be welded and assembled into a finished product in advance in the factory, or can be welded and assembled on site according to the actual size needs on the construction site. The height H in the mounting groove 21 is greater than the length L2 of the mounting section 14, the groove bottom of the mounting groove 21 is V-shaped, and the lowest point D1 of the mounting section 14 is located at the middle tip of the V-shaped portion in the natural state of the steel plate 1. The mounting section 14 can slide on the two sides of the middle tip of the V-shaped groove bottom in the state of being subjected to force, and finally still falls to the middle tip of the V-shaped groove bottom after stress balance, effectively ensuring the connection stability of the bearing member, that is, in the natural state, the mounting section 14 is located in the mounting groove 21, and when the vehicle passes through the bridge expansion joint, or the bridge expansion joint is hot and cold, the mounting section 14 is still located in the mounting groove 21, so that the mounting section 14 can still be hung in the mounting groove 21, thereby avoiding the mounting section 14 from being separated from the mounting groove 21. In addition, the mounting section 14 and the corresponding mounting groove 21 in the embodiment enclose a first filling space S1 for filling the filling material, and the two profile steels 2 are further provided with a second filling space S2 for filling the filling material above the bearing section 11, the first filling space S1 and the second filling space S2 jointly form a filling area 3, and the filling material in the embodiment is an elastic material 5. The elastic material 5 is poured into the filling area 3, and after a period of time, the elastic material 5 becomes a solid, and the upper end of the elastic material 5 is lower than the upper end of the profile steel 2. The elastic material 5 provides a certain deformation space for the bridge expansion joint, and the elastic material 5 can absorb the noise generated by the impact of the vehicle on the bridge expansion device, so that the bridge expansion device has better noise reduction effect. The flowability of the elastic material 5 is not large, so the filling of the elastic material 5 in the filling area can be performed before the construction of the bridge expansion joint, which is convenient and can simplify the construction process.

[0027] The specific process of the cantilever hanging in the corresponding installation slot 21 is as follows: first, an external tool extrudes the cantilever of the bearing part, so that the connecting section 12, the extending section 13 and the installation section 14 of the cantilever are close to the bearing section 11, and the length of the bearing part is reduced; then, the extruded bearing part is placed in the expansion joint between the two profile steels 2; finally, the external tool releases the cantilever, and the connecting section 12, the extending section 13 and the installation section 14 of the cantilever are reset, the length of the installation section 14 of the cantilever is less than the height of the installation slot 21, so that the installation section 14 can smoothly enter the installation slot 21, and the lowest point D1 of the installation section 14 is located at the middle tip position of the V-shaped groove bottom, so that the cantilever of the bearing part can be hung in the installation slot 21 of the two profile steels 2, when the bearing section 11 is subjected to downward pressure, based on the parallelism between the connecting section 12 and the installation section 14 of the cantilever, the stress direction of the connecting section 12 is the same as that of the installation section 14, so that the cantilever can be more stably hung in the profile steel 2; even if the bearing section 11 is subjected to strong downward pressure, the installation section 14 can only slide on the two side arms of the middle tip position of the V-shaped groove bottom, and finally falls to the middle tip position of the V-shaped groove bottom after stress balance, effectively ensuring the connection stability of the bearing part; in addition, when pouring the elastic material 5 into the filling area 3, based on the first filling space S1 enclosed between the installation section 14 and the corresponding installation slot 21, by means of the filling and adhesion of the elastic material 5, the bearing part and the two profile steels 2 form an integral whole, thereby avoiding the problem of downward water seepage of the bridge expansion joint.

Claims

1. A bearing member for structural steel, comprising a steel plate (1), wherein the steel plate (1) is recessed from top to bottom with a bearing section (11) for filling with a corresponding filling material, and the bearing section (11) extends outward horizontally or obliquely upward with a cantilever for suspending on a corresponding structural steel, characterized in that: The bearing section (11) is a horizontally arranged steel plate, and the cantilever includes an installation section (14) located at the end and extending downward at least partially into the corresponding steel section.

2. The steel bearing member according to claim 1, characterized in that: The lowest point (D1) of each of the installation segments (14) is on the same horizontal plane and is higher than the plane on which the bearing segment (11) is located.

3. The steel bearing member according to claim 1, characterized in that: The cantilever also includes a connecting section (12) and an extension section (13). The left and right ends of the bearing section (11) extend upward to form two connecting sections (12). The upper end of the connecting section (12) extends horizontally away from the bearing section (11) to form an extension section (13). The end of the extension section (13) extends downward to form an installation section (14). The connecting section (12) is set parallel to the installation section (14).

4. A bridge expansion joint, comprising two opposing steel sections (2), characterized in that: A steel bearing member as described in any one of claims 1 to 3 is installed between the two steel sections (2). The distance (D) between the two steel sections (2) is greater than the length (L1) of the bearing section (11). An installation groove (21) is provided on the opposite side of the two steel sections (2). The height (H) in the installation groove (21) is greater than the length (L2) of the installation section (14), so that the installation section (14) can be installed into the corresponding installation groove (21).

5. The bridge expansion joint according to claim 4, characterized in that: The installation section (14) and the corresponding installation groove (21) form a first filling space (S1) for filling material. A second filling space (S2) for filling material to be filled on the bearing section (11) is also provided between the two steel sections (2). The first filling space (S1) and the second filling space (S2) together form a filling area (3).

6. The bridge expansion joint according to claim 4, characterized in that: The bottom of the mounting groove (21) is V-shaped, and the lowest point (D1) of the mounting section (14) is located at the middle tip of the V-shape.

7. The bridge expansion joint according to claim 4, characterized in that: Below the mounting groove (21) is a slot (22), and a waterstop (4) is provided between the two steel sections (2). The two ends of the waterstop (4) are respectively set in the slots (22) of the two steel sections (2).

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