An interactively supported trough-shaped expansion joint structure

Abstract

The utility model discloses an interactively supported groove-shaped expansion joint structure, which is arranged between two adjacent beams, an expansion joint is arranged between the two beams, and a surface layer is laid on the upper parts of the two beams, including bases respectively fixedly arranged on the proximal ends of the two beams, and telescopic parts are respectively fixedly arranged on the tops of the bases, and at least one telescopic part is supported on the base on the opposite side across the expansion joint; a plurality of interactive teeth are arranged on the telescopic part in the left-right direction, and an interactive groove is formed between adjacent interactive teeth, and the interactive teeth extend into the interactive groove on the telescopic part on the opposite side; a filling groove with a top opening is arranged on the telescopic part, and the filling groove is filled with a filling material, and the filling material is arranged in the same manner as the surface layer material. The utility model is conducive to reducing vibration impact and noise, improving service life, and improving anti-slip performance.

Description

Technical Field

[0001] The utility model relates to a bridge expansion joint structure, in particular to an interactively supported groove-shaped expansion joint structure. Background Art

[0002] The expansion joint of a bridge is located near the adjacent beams, and mainly plays the role of adjusting the displacement and connection between the upper structures caused by vehicle loads and bridge construction materials, and should also have functions such as waterproofing and noise prevention. At present, the steel plate comb expansion joint structure used on bridges, such as Fig.10 and Fig.11 As shown, the comb-tooth steel plate is fixed to the beam body on one side of the expansion joint with high-strength bolts, and a stainless steel slide plate and a rubber waterproof plate are fixed thereunder respectively. The rubber waterproof plate is on the lower side of the stainless steel slide plate, and the part of the rubber waterproof plate in the expansion joint is folded into a V shape, leaving a margin for expansion and contraction deformation, and is used as a drainage channel; the rubber waterproof plate extends into the beam body on the other side of the expansion joint, and is pressed on the lower side of the comb-tooth steel plate on this side, and the comb-tooth steel plate on this side is fixed to the beam body on this side with high-strength bolts.

[0003] There are still some problems with this expansion joint structure in use, as follows. First, the surface material of the bridge is mainly asphalt. This expansion joint structure is fixed on the concrete near the end of the beam body. The far ends of the two comb-tooth steel plates are both concrete surfaces. In addition, the top surface of the comb-tooth steel plate is exposed steel plate material, so there will be three surface materials at the expansion joint structure. These three surface materials will significantly increase the difficulty of maintaining the flatness of the road surface at the expansion joint structure. Therefore, when vehicles pass through the expansion joint structure, there are mostly large vibration shocks, accompanied by obvious impact noise; and the accumulation of the above vibration shocks will also cause the expansion joint structure to be prone to fatigue damage, resulting in an increase in maintenance frequency. Second, the upper surface of the comb-tooth steel plate is relatively smooth and has a low friction coefficient, which will reduce the safety of vehicle driving, especially on bridges with curves, where safety hazards such as vehicle side slipping are obvious. To this end, the expansion joint structure needs to be improved in response to the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an interactively supported groove-shaped expansion joint structure which is beneficial to reducing vibration impact and noise, increasing service life, and improving anti-slip performance.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an interactively supported groove-shaped expansion joint structure, which is arranged between two adjacent beam bodies, an expansion joint is arranged between the two beam bodies, and surface layers are respectively laid on the upper parts of the two beam bodies, including bases respectively fixedly arranged on the proximal ends of the two beam bodies, and telescopic parts are respectively fixedly arranged on the tops of the bases, and at least one of the telescopic parts spans the expansion joint and is supported on the base on the opposite side; a plurality of interactive teeth are arranged on the telescopic part in the left-right direction, and interactive grooves are formed between adjacent interactive teeth, and the interactive teeth extend into the interactive grooves on the telescopic part on the opposite side; a filling groove with a top opening is provided on the telescopic part, and the filling groove is filled with filling material, and the filling material is arranged in the same manner as the surface layer material.

[0006] As a preferred technical solution, the telescopic member includes a plurality of supporting uprights arranged along the left-right direction, and tooth end uprights and groove bottom uprights are alternately provided between the ends of the telescopic member on the opposite side of two adjacent supporting uprights, and between the waists of two adjacent supporting uprights, and the tooth end uprights spanning the expansion joint are fixedly provided with a tooth bottom plate together with the bottoms of the corresponding two supporting uprights.

[0007] As a preferred technical solution, the top surface of the telescopic member is arranged at the same height as the top surface of the surface layer, and the top surface of the filling material is arranged at the same height as the top surface of the surface layer.

[0008] As a preferred technical solution, a stainless steel slide plate is fixedly welded on the support surface of the base for the telescopic member on the opposite side.

[0009] As a preferred technical solution, the surface of the telescopic member is provided with a hot-dip galvanized layer.

[0010] As a preferred technical solution, the base includes a top plate fixedly arranged on the top surface of the corresponding beam body, and the top plate is integrally connected with an end plate located on the end surface of the corresponding beam body near the edge of the other beam body, and the top plate and / or the end plate are fixedly provided with anchor bars embedded in the beam body.

[0011] As a preferred technical solution, a reserved telescopic space is provided between the interactive teeth and the corresponding interactive grooves, and the overlapping length of the interactive teeth on the two telescopic parts is set greater than the length of the reserved telescopic space.

[0012] As a preferred technical solution, a stainless steel groove plate arranged in a V-shape is fixedly provided between the two bases.

[0013] Due to the adoption of the above technical scheme, an interactively supported groove-shaped expansion joint structure is arranged between two adjacent beams, an expansion joint is arranged between the two beams, and a surface layer is laid on the upper part of the two beams, including bases fixedly arranged on the proximal ends of the two beams, and telescopic members are fixedly arranged on the top of the bases, and at least one telescopic member straddles the expansion joint and is supported on the base on the opposite side; a plurality of interactive teeth are arranged on the telescopic member in the left and right directions, and an interactive groove is formed between adjacent interactive teeth, and the interactive teeth extend into the interactive groove on the telescopic member on the opposite side; a filling groove with a top opening is arranged on the telescopic member, and the filling groove is filled with a filling material, and the filling material is arranged in the same material as the surface layer. The telescopic member of the utility model forms a shield for the expansion joint by overlapping the interactive teeth, and forms a continuous road surface when it can adapt to the expansion and contraction of the beam body. The telescopic member is arranged in a groove shape, and the groove is filled with a filling material of the same material as the surface layer, so the telescopic member can be used to lay the surface layer material together with the beam body, and finally a continuous road surface of the same material is formed on the bridge surface, and the flatness of the road surface is easy to control, which is conducive to reducing vibration, impact and noise. The telescopic member is directly supported on the base on the opposite side, forming a rigid support with strong impact resistance, significantly reducing fatigue damage caused by impact and increasing service life. The steel area of ​​the telescopic member is ultimately exposed to the road surface, and the anti-slip performance at the expansion joint is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0015] Figure 1 It is a schematic diagram of the top view of the structure of the first embodiment of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of AA structure;

[0017] Figure 3 yes Figure 2 A schematic diagram of the structure at position I of FIG.

[0018] Figure 4 yes Figure 1 Schematic diagram of BB structure;

[0019] Figure 5 yes Figure 1 Schematic diagram of the structure when the surface layer and filling material are not laid;

[0020] Figure 6 It is a schematic diagram of the top view of the structure of the second embodiment of the utility model;

[0021] Figure 7 yes Figure 6 Schematic diagram of CC structure;

[0022] Figure 8 yes Figure 6 Schematic diagram of DD structure;

[0023] Fig. 9 yes Figure 6 Schematic diagram of the structure when the surface layer and filling material are not laid;

[0024] Fig.10 It is a schematic diagram of the top view of the structure of the existing expansion joint;

[0025] Fig.11 yes Fig.10 Schematic diagram of EE structure.

[0026] In the figure: 1-beam body; 11-expansion joint; 12-surface layer; 121-asphalt surface; 122-concrete surface; 13-comb steel plate; 14-rubber waterproof sheet; 2-base; 21-top plate; 22-end plate; 23-anchor bar; 3-stainless steel slide plate; 4-telescopic member; 41-interactive teeth; 42-interactive grooves; 43-reserved telescopic space; 44-filling groove; 45-filling material; 46-supporting vertical plate; 47-tooth end vertical plate; 48-groove bottom vertical plate; 49-tooth bottom plate; 5-stainless steel groove plate. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0028] Embodiment 1: Figures 1 to 5 As shown, an interactively supported trough-shaped expansion joint structure is arranged between two adjacent beam bodies 1, an expansion joint 11 is arranged between the two beam bodies 1, and a surface layer 12 is laid on the upper part of the two beam bodies 1. The above is easy to understand based on the existing bridge knowledge and will not be repeated here. Among them, the surface layer 12 can be an asphalt concrete material or a reinforced concrete material, which is not limited here.

[0029] The expansion joint structure includes bases 2 fixedly arranged at the proximal ends of the two beam bodies 1, and the bases 2 are carriers of the remaining structures. The specific structure is as follows: Figures 2 to 4As shown, the base 2 includes a top plate 21 fixedly arranged at the top surface of the corresponding beam body 1, and the top plate 21 is integrally connected with an end plate 22 located on the end surface of the corresponding beam body 1 near the edge of the other beam body 1, and an anchor bar 23 pre-embedded in the beam body 1 is fixedly arranged on the top plate 21 and / or the end plate 22. The base 2 is fixedly connected to the beam body 1 by the pre-embedding of the anchor bar 23, and the top plate 21 and the end plate 22 are integrally formed to form a good bearing capacity in both the vertical and horizontal directions, and this good bearing capacity will in turn form a good resistance to vehicle impact, which is conducive to improving the impact resistance of this embodiment.

[0030] like Figures 1 to 5 As shown, telescopic parts 4 are fixedly provided on the top of the base 2, and the fixing here can be welding fixing, or can be fixing with fasteners such as bolts, which is not limited here. At least one telescopic part 4 is supported on the base 2 on the opposite side across the expansion joint 11; based on the good bearing capacity of the base 2 and the direct rigid support of the telescopic part 4 on the base 2, this embodiment is stable and reliable when subjected to force, has strong impact resistance, and is not prone to fatigue damage. This embodiment shows that both telescopic parts 4 are supported on the base 2 on the opposite side across the expansion joint 11.

[0031] Preferably, if Figure 3 As shown, a stainless steel slide plate 3 is fixedly welded on the supporting surface of the telescopic member 4 on the opposite side of the base 2 to reduce the influence of rust on the telescopic function of the telescopic member 4. Preferably, a hot-dip galvanized layer is provided on the surface of the telescopic member 4 to reduce the occurrence of rust on the telescopic member 4 and further avoid the influence of rust on the telescopic function.

[0032] like Figure 1 and Figure 5 As shown, the telescopic member 4 is provided with a plurality of interactive teeth 41 arranged in the left-right direction, and an interactive groove 42 is formed between adjacent interactive teeth 41, and the interactive teeth 41 extend into the interactive groove 42 on the telescopic member 4 on the opposite side, so that the interactive teeth 41 on the two telescopic members 4 are overlapped with each other to ensure the continuity of the road surface. Since the interactive teeth 41 are part of the telescopic member 4, the telescopic member 4 in this embodiment is supported on the base 2 on the opposite side, so that the interactive teeth 41 are supported on the base 2 on the opposite side, and the interactive teeth 41 on the two telescopic members 4 overlap to form a shielding for the expansion joint 11.

[0033] Preferably, if Figures 1 to 5As shown, a reserved telescopic space 43 is provided between the interactive teeth 41 and the corresponding interactive grooves 42, and the overlapping length of the interactive teeth 41 on the two telescopic members 4 is greater than the length of the reserved telescopic space 43. Therefore, regardless of the expansion and contraction of the beam body 1, the interactive teeth 41 can achieve the purpose of adapting to expansion and contraction by approaching or moving away from each other while maintaining the continuity of the road surface.

[0034] like Figure 5 As shown, the telescopic member 4 is provided with a filling slot 44 with a top opening. Figures 1 to 4 As shown, the filling groove 44 is filled with a filler 45, and the filler 45 is set with the same material as the surface layer 12. As a result, the expansion joint 11 can be laid with the surface layer 12 material together with the beam body 1, and finally the expansion joint 11 forms a road surface with the same material as the beam body 1, such as an asphalt concrete road surface or a reinforced concrete road surface, and the road surface flatness is easy to control, which is conducive to reducing vibration impact and noise. The expansion member 4 only has a small amount of steel surface exposed on the road surface at the wall of the filling groove 44. For the vehicle wheel surface, its effect on the vehicle slippage can be ignored, and the expansion joint 11 presents the same asphalt concrete road surface, etc., to achieve a significant improvement in anti-skid performance. Preferably, the top surface of the expansion member 4 is set at the same height as the top surface of the surface layer 12, and the top surface of the filler 45 is set at the same height as the top surface of the surface layer 12. In this way, the road surface can be controlled to have an ideal flatness.

[0035] During actual construction, the base 2 is pre-fixed on the corresponding beam body 1, and the telescopic member 4 is pre-fixed on the corresponding base 2. When the adjacent beam body 1 is constructed, a filling block with the same height as the final road surface is pre-stuffed in the reserved telescopic space 43 between the interactive teeth 41 and the corresponding interactive grooves 42; since the top surface of the telescopic member 4 is at the same height as the final road surface, the filling block can be set to be at the same height as the top surface of the telescopic member 4. Then the pavement material is laid as a whole, and the filling of the upper layer 12 of the beam body 1 and the material in the filling groove 44 can be completed together, which significantly simplifies the construction. After paving, the filling block is taken out. This embodiment can maintain the adaptability to the expansion and contraction of the beam body 1 at the expansion joint 11, and form a smooth road surface. The vibration, impact and noise of the vehicle can be significantly reduced. It also relies on the rigid support of the telescopic member 4 and the base 2 to form a better impact resistance and significantly improve the service life.

[0036] The telescopic member 4 of this embodiment includes a plurality of support vertical plates 46 arranged in a row along the left-right direction, and tooth end vertical plates 47 and groove bottom vertical plates 48 are alternately arranged between the ends of the telescopic member 4 on the opposite side of two adjacent support vertical plates 46, and between the waists of the two adjacent support vertical plates 46, and the tooth end vertical plates 47 crossing the expansion joint 11 and the bottoms of the corresponding two support vertical plates 46 are jointly fixed with a tooth bottom plate 49. Based on the interactive teeth 41 on the two telescopic members 4 of this embodiment, both of the tooth end vertical plates 47, the tooth bottom plates 49 and the corresponding two support vertical plates 46 constitute the interactive teeth 41 on the two telescopic members 4, and the groove bottom vertical plates 48 and the portions of the corresponding two support vertical plates 46 close to the telescopic member 4 on the opposite side constitute the interactive grooves 42. Of course, the above vertical plates, bottom plates and the top plate 21 on the base 2 together form the filling groove 44, and the filling groove 44 is formed in a form of an opening relative to the direction of the surface layer 12. This can ensure the rigidity of the telescopic member 4 while further facilitating the laying of the surface layer 12 and the material in the filling groove 44 together, thereby improving the integrity and continuity of the road surface and further reducing the exposed area of ​​the telescopic member 4 on the road surface.

[0037] like Figure 2 and Figure 4 As shown, in this embodiment, a stainless steel trough plate 5 arranged in a V-shape is fixedly provided between the two bases 2. The stainless steel trough plate 5 replaces the rubber waterproof plate, and plays a role in adapting to the expansion and contraction deformation while playing a role in draining water at the expansion joint 11. The stainless steel trough plate 5 does not have the problem of aging, and can have the same service life as the bridge, avoiding the problem of regular replacement of the waterproof structure. Among them, the stainless steel trough plate 5 can be directly welded between the two bases 2, and further, it is welded between the lower ends of the middle end plates 22 of the two bases 2; of course, it can also be embedded in a pre-embedded manner, and the side of the stainless steel trough plate 5 is embedded between the corresponding side end plate 22 and the beam body 1 to form a fixation.

[0038] Embodiment 2: Figures 6 to 9As shown, the difference between this embodiment and the first embodiment is that only one of the telescopic members 4 crosses the expansion joint 11 and is supported on the base 2 on the opposite side. Based on this, this embodiment also forms a continuous road surface by overlapping the interactive teeth 41 on the two telescopic members 4, but only the telescopic member 4 crossing the expansion joint 11 blocks the expansion joint 11. At the same time, based on the fact that the interactive groove 42 part of the telescopic member 4 crossing the expansion joint 11 also crosses the expansion joint 11, the tooth bottom plate 49 should at least extend to the bottom of the groove bottom vertical plate 48 and the supporting vertical plate 46 between the base 2 on the corresponding side, so that the part of the telescopic member 4 leaving the base 2 can still jointly enclose the filling groove 44; and because the other telescopic member 4 does not cross the expansion joint 11, the tooth bottom plate 49 is not required to be set at its interactive teeth 41, and the top plate 21 on the corresponding base 2 can be used as the bottom structure to enclose its filling groove 44.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An alternately supported trough-shaped expansion joint structure, arranged between two adjacent beams, an expansion joint is arranged between the two beams, and a surface layer is laid on the upper parts of the two beams, characterized in that: It includes bases fixedly arranged on the proximal ends of the two beam bodies, telescopic parts are fixedly arranged on the tops of the bases, at least one of the telescopic parts spans the expansion joint and is supported on the base on the opposite side; a plurality of interactive teeth are arranged on the telescopic parts along the left-right direction, interactive grooves are formed between adjacent interactive teeth, and the interactive teeth extend into the interactive grooves on the telescopic parts on the opposite side; a filling groove with a top opening is provided on the telescopic parts, and the filling groove is filled with filling material, and the filling material is arranged to be the same as the material of the surface layer.

2. An alternately supported trough-shaped expansion joint structure according to claim 1, characterized in that: The telescopic member includes a plurality of supporting uprights arranged in a left-right direction, and tooth end uprights and groove bottom uprights are alternately provided between the ends of the telescopic member on the opposite side of two adjacent supporting uprights and between the waists of two adjacent supporting uprights. The tooth end upright spanning the expansion joint is fixedly provided with a tooth bottom plate together with the bottom of the corresponding two supporting uprights.

3. The interactively supported trough-shaped expansion joint structure according to claim 1, characterized in that: The top surface of the telescopic member is arranged at the same height as the top surface of the surface layer, and the top surface of the filling material is arranged at the same height as the top surface of the surface layer.

4. The alternately supported trough-shaped expansion joint structure according to claim 1, characterized in that: A stainless steel sliding plate is fixedly welded on the support surface of the base for the telescopic member on the opposite side.

5. The alternately supported trough-shaped expansion joint structure according to claim 1, characterized in that: The surface of the telescopic member is provided with a hot-dip galvanized layer.

6. The alternately supported trough-shaped expansion joint structure according to claim 1, characterized in that: The base includes a top plate fixedly arranged on the top surface of the corresponding beam body, and the top plate is integrally connected with an end plate located on the end surface of the corresponding beam body near the edge of the other beam body. Anchor bars embedded in the beam body are fixedly arranged on the top plate and / or the end plate.

7. The alternately supported trough-shaped expansion joint structure according to claim 1, characterized in that: A reserved telescopic space is provided between the interactive teeth and the corresponding interactive grooves, and the overlapping length of the interactive teeth on the two telescopic parts is greater than the length of the reserved telescopic space.

8. An alternately supported trough-shaped expansion joint structure according to any one of claims 1 to 7, characterized in that: A stainless steel groove plate arranged in a V shape is fixedly arranged between the two bases.

Images