Waterproof structure of bridge expansion joint

Abstract

The utility model provides a bridge expansion joint waterproof structure which comprises two first cylindrical connecting seats, two second cylindrical connecting seats and a waterproof belt, and the first cylindrical connecting seats are provided with first strip-shaped notches; a second strip-shaped notch is formed in the rear side wall of the second cylindrical connecting seat, and a third strip-shaped notch is formed in the front side wall of the second cylindrical connecting seat; the waterproof belt comprises a rubber belt body and two rubber connecting ends, and the two rubber connecting ends are detachably mounted in the two second cylindrical connecting seats; the rubber connecting end can stretch and deform in the vertical direction so as to pass through the first strip-shaped notch and the second strip-shaped notch and be limited by the third strip-shaped notch. The problem that in the prior art, a waterproof system of a comb plate type telescopic device is difficult to replace or cannot be replaced, and use and popularization are limited is solved.

Description

Technical Field

[0001] The utility model relates to the field of bridge expansion joints, and more specifically, to a waterproof structure for bridge expansion joints. Background Art

[0002] In China's highway bridges, modular and comb-tooth plate expansion devices are both available. Considering the influence of noise, the modular expansion device is more widely used under working conditions such as highways where the vehicle speed is high and there are many heavy trucks; in municipal bridges and other working conditions where the vehicle speed is low, the traffic flow is large, there are few heavy trucks, and noise requirements are high, the comb-tooth plate expansion device is more widely used. In recent years, due to the defects of the comb-tooth plate such as bolts being prone to loosening and breaking, a boltless noise-reducing comb-tooth plate expansion device has emerged in the market. Because it combines the advantages of noise reduction of the comb-tooth plate and boltless anchoring of the modular type, it has gained a place in the municipal bridge market. The biggest drawback of the comb-tooth plate expansion device is that its waterproof system is difficult or impossible to replace, which limits its use. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a waterproof structure for bridge expansion joints, so as to at least solve the problem that the waterproof system of the existing comb-tooth plate expansion device is difficult or impossible to replace, thereby restricting its use and promotion.

[0004] To achieve the above purpose, the utility model provides a waterproof structure for bridge expansion joints. The waterproof structure for bridge expansion joints is applied between two adjacent beam bodies of a bridge. Opposite step grooves are provided at the ends of the two beam bodies. The waterproof structure for bridge expansion joints includes: two first cylindrical connecting seats, which are relatively installed in the step grooves of the two beam bodies through anchoring concrete. A first strip-shaped notch extending in the transverse bridge direction is provided on the front side wall of the first cylindrical connecting seat; two second cylindrical connecting seats, which are correspondingly and parallelly arranged on the front side walls of the two first cylindrical connecting seats. A second strip-shaped notch extending in the transverse bridge direction is provided on the rear side wall of the second cylindrical connecting seat, and a third strip-shaped notch extending in the transverse bridge direction is provided on the front side wall of the second cylindrical connecting seat. The second strip-shaped notch is opposite to and communicated with the first strip-shaped notch, and the width of the second strip-shaped notch and the first strip-shaped notch in the vertical direction is greater than the width of the third strip-shaped notch in the vertical direction; a waterproof belt, which includes a rubber belt body and rubber connecting ends oppositely arranged along the longitudinal bridge direction at both ends of the rubber belt body. The two rubber connecting ends are detachably installed in the two second cylindrical connecting seats so that the rubber belt body seals the expansion joint between the ends of the two beam bodies; wherein, the rubber connecting ends can expand and contract deforming in the vertical direction to pass through the first strip-shaped notch and the second strip-shaped notch.

[0005] Furthermore, the first cylindrical connecting seat is a rectangular steel pipe, and the front side wall of the first cylindrical connecting seat is flush with the front side wall of the anchoring concrete.

[0006] Further, the second cylindrical connecting seat includes two angle steels, the inner angles of the two angle steels are arranged opposite to each other up and down, the rear side walls of the two angle steels are fixedly connected to the front side wall of the first cylindrical connecting seat to form a second strip-shaped notch, and the front side walls of the two angle steels are free edges to form a third strip-shaped notch.

[0007] Further, the second cylindrical connecting seat further includes: two groups of reinforcing plates, the two groups of reinforcing plates are correspondingly arranged between the rear side walls of the two angle steels and the front side wall of the first cylindrical connecting seat to fixedly connect the two angle steels and the first cylindrical connecting seat; wherein, each group of reinforcing plates is multiple, and the multiple reinforcing plates in each group are evenly spaced along the length direction of the angle steel.

[0008] Further, the cross-section of the rubber connecting end is a pentagonal structure; wherein, one side wall of the rubber connecting end is opposite to the second strip-shaped notch, and one vertex angle of the rubber connecting end is opposite to the third strip-shaped notch.

[0009] Further, a telescopic hole extending along its length direction is formed in the rubber connecting end.

[0010] Further, the telescopic hole is a circular hole.

[0011] Further, the cross-section of the rubber belt body along the longitudinal bridge direction is one of a "U" shape, a "W" shape, a side-by-side box shape or a side-by-side circular cross-section.

[0012] The waterproof structure of the bridge expansion joint of the technical solution of the present utility model is applied between two adjacent beam bodies of the bridge. Opposite step grooves are provided at the ends of the two beam bodies. The waterproof structure of the bridge expansion joint includes a first cylindrical connecting seat, a second cylindrical connecting seat and a waterproof belt. There are two first cylindrical connecting seats, and the two first cylindrical connecting seats are relatively installed in the step grooves of the two beam bodies through anchor concrete. A first strip-shaped notch extending in the transverse bridge direction is provided on the front side wall of the first cylindrical connecting seat; there are two second cylindrical connecting seats, and the two second cylindrical connecting seats are correspondingly arranged in parallel on the front side walls of the two first cylindrical connecting seats. A second strip-shaped notch extending in the transverse bridge direction is provided on the rear side wall of the second cylindrical connecting seat, and a third strip-shaped notch extending in the transverse bridge direction is provided on the front side wall of the second cylindrical connecting seat. The second strip-shaped notch is opposite to and communicated with the first strip-shaped notch, and the width of the second strip-shaped notch and the first strip-shaped notch in the vertical direction is greater than the width of the third strip-shaped notch in the vertical direction; the waterproof belt includes a rubber belt body and rubber connecting ends oppositely arranged at both ends of the rubber belt body along the longitudinal bridge direction. The two rubber connecting ends are detachably installed in the two second cylindrical connecting seats so that the rubber belt body seals the expansion joint between the ends of the two beam bodies; wherein, the rubber connecting ends can be elastically deformed in the vertical direction to pass through the first strip-shaped notch and the second strip-shaped notch. During installation, the two rubber connecting ends of the waterproof belt enter the first cylindrical connecting seat from the end side of the first cylindrical connecting seat in the transverse bridge direction and move into place. The rubber belt body of the waterproof belt sequentially passes through the first strip-shaped notch, the second strip-shaped notch and the third strip-shaped notch, and then a tool is used to pull the middle part of the rubber belt body of the waterproof belt, so that the rubber connecting ends of the waterproof belt are extruded by the first strip-shaped notch to generate elastic deformation, and then are embedded into the inner cavity of the second cylindrical connecting seat. After the rubber connecting ends of the waterproof belt are deformed and restored, they will fill the entire inner cavity of the second cylindrical connecting seat, and water cannot flow into the inner cavity of the second cylindrical connecting seat from the third strip-shaped notch, thereby realizing the sealing of the expansion joint between the ends of the two beam bodies. It solves the problem that the waterproof system of the comb-tooth type expansion device in the prior art is difficult to replace or cannot be replaced, thus restricting its use and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0014] Figure 1 is a schematic structural diagram of a waterproof structure of a bridge expansion joint according to an optional embodiment of the present utility model;

[0015] Figure 2 is a schematic side view of the first step of the installation process of a waterproof structure of a bridge expansion joint according to an optional embodiment of the present utility model;

[0016] Figure 3It is a top view schematic diagram of the first step of the installation process of a waterproof structure for a bridge expansion joint according to an embodiment of the present utility model;

[0017] Figure 4 It is a schematic diagram of the second step of the installation process of a waterproof structure for a bridge expansion joint according to an embodiment of the present utility model;

[0018] Figure 5 It is a schematic diagram of the third step of the installation process of a waterproof structure for a bridge expansion joint according to an embodiment of the present utility model;

[0019] Figure 6 It is a schematic diagram of the first replacement and removal process of a waterproof structure for a bridge expansion joint according to an embodiment of the present utility model;

[0020] Figure 7 It is a schematic diagram of the first step of the second replacement and removal process of a waterproof structure for a bridge expansion joint according to an embodiment of the present utility model;

[0021] Figure 8 It is a schematic diagram of the second step of the second replacement and removal process of a waterproof structure for a bridge expansion joint according to an embodiment of the present utility model.

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 10. First cylindrical connecting seat; 20. Second cylindrical connecting seat; 21. Angle steel; 30. Waterproof belt; 31. Rubber belt body; 32. Rubber connecting end; 33. Expansion hole; 40. Anchor concrete; 50. Reinforcement plate. Detailed implementation manners

[0024] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] The waterproof structure of the bridge expansion joint according to the embodiment of the present utility model, as Figure 1As shown in the figure, it is applied between two adjacent beam bodies of a bridge. Opposite step grooves are provided at the ends of the two beam bodies. The waterproof structure of the bridge expansion joint includes a first cylindrical connecting seat 10, a second cylindrical connecting seat 20, and a waterproof belt 30. There are two first cylindrical connecting seats 10, and the two first cylindrical connecting seats 10 are relatively installed in the step grooves of the two beam bodies through anchor concrete 40. A first strip-shaped notch extending along the transverse direction of the bridge is provided on the front side wall of the first cylindrical connecting seat 10; there are two second cylindrical connecting seats 20, and the two second cylindrical connecting seats 20 are correspondingly arranged in parallel on the front side walls of the two first cylindrical connecting seats 10. A second strip-shaped notch extending along the transverse direction of the bridge is provided on the rear side wall of the second cylindrical connecting seat 20, and a third strip-shaped notch extending along the transverse direction of the bridge is provided on the front side wall of the second cylindrical connecting seat 20. The second strip-shaped notch is opposite to and communicates with the first strip-shaped notch, and the width of the second strip-shaped notch and the first strip-shaped notch in the vertical direction is greater than the width of the third strip-shaped notch in the vertical direction; the waterproof belt 30 includes a rubber belt body 31 and rubber connecting ends 32 oppositely arranged at both ends of the rubber belt body 31 along the longitudinal direction of the bridge. The two rubber connecting ends 32 are detachably installed in the two second cylindrical connecting seats 20 so that the rubber belt body 31 seals the expansion joint between the ends of the two beam bodies; among them, the rubber connecting end 32 can expand and contract deforming in the vertical direction to pass through the first strip-shaped notch and the second strip-shaped notch. During installation, by respectively inserting the two rubber connecting ends 32 of the waterproof belt 30 into the first cylindrical connecting seat 10 from the end side of the first cylindrical connecting seat 10 along the transverse direction of the bridge and moving them into place, the rubber belt body 31 of the waterproof belt 30 sequentially passes through the first strip-shaped notch, the second strip-shaped notch, and the third strip-shaped notch, and then use a tool to pull the middle part of the rubber belt body 31 of the waterproof belt 30, so that the rubber connecting end 32 of the waterproof belt 30 is squeezed by the first strip-shaped notch to generate elastic deformation, and then embedded into the inner cavity of the second cylindrical connecting seat 20. Since the width of the third strip-shaped notch is relatively narrow, it plays a limiting role on the rubber connecting end 32 of the waterproof belt 30 and prevents it from passing through the third strip-shaped notch; after the rubber connecting end 32 deforms and recovers, it will fill the entire inner cavity of the second cylindrical connecting seat 20, and water cannot flow into the inner cavity of the second cylindrical connecting seat 20 from the third strip-shaped notch, thereby realizing the sealing of the expansion joint between the ends of the two beam bodies. It solves the problem that the waterproof system of the comb-tooth type expansion device in the prior art is difficult to replace or cannot be replaced, thus restricting its use and promotion.

[0026] During specific implementation, the first cylindrical connecting seat 10 is a rectangular steel pipe, and the front side wall of the first cylindrical connecting seat 10 is flush with the front side wall of the anchor concrete 40; the first strip-shaped notch is opened in the middle of the front side wall of the first cylindrical connecting seat 10. The first cylindrical connecting seat 10 is made of a rectangular steel pipe, which is first convenient for installation and increases the anchoring effect of the anchor concrete 40. At the same time, the inner cavity of the first cylindrical connecting seat 10 can provide a better installation space for the rubber connecting end 32 of the waterproof belt 30, which is convenient for installing the waterproof belt 30.

[0027] Further, the second cylindrical connecting seat 20 includes two angle steels 21. The inner angles of the two angle steels 21 are arranged opposite to each other up and down. The rear side walls of the two angle steels 21 are fixedly connected to the front side wall of the first cylindrical connecting seat 10 to form a second strip-shaped notch. The front side walls of the two angle steels 21 are free edges and form a third strip-shaped notch. The front side walls of the two angle steels 21 are relatively closer to each other, so that the width of the second strip-shaped notch is greater than the width of the third strip-shaped notch, enabling the rubber connecting end 32 to smoothly pass through the second strip-shaped notch and be limited by the third strip-shaped notch.

[0028] Further, the second cylindrical connecting seat 20 further includes two groups of reinforcing plates 50. The two groups of reinforcing plates 50 are correspondingly arranged between the rear side walls of the two angle steels 21 and the front side wall of the first cylindrical connecting seat 10 to reinforce and connect the two angle steels 21 and the first cylindrical connecting seat 10; each group of reinforcing plates 50 has multiple ones, and the multiple reinforcing plates 50 in each group are evenly spaced along the length direction of the angle steel 21, so as to reinforce the two angle steels 21 and the first cylindrical connecting seat 10 point by point along the transverse bridge direction and prevent the two angle steels 21 from falling off.

[0029] Further, the cross-section of the rubber connecting end 32 of the waterproof belt 30 is a pentagonal structure, so that it can match the internal space of the second cylindrical connecting seat 20; one side wall at the rear end of the rubber connecting end 32 faces the second strip-shaped notch, and the other four side walls are respectively attached to the four inner side walls of the two angle steels 21. One vertex angle at the front end of the rubber connecting end 32 faces the third strip-shaped notch, and the two ends of the rubber belt body 31 are respectively connected to the vertex angles at the front end of the rubber connecting end 32 to pull and fix the rubber belt body 31.

[0030] Further, a telescopic hole 33 extending along its length direction is formed in the rubber connecting end 32. Optionally, the telescopic hole 33 is a circular hole. By forming the telescopic hole 33 in the rubber connecting end 32, the rubber connecting end 32 can better undergo elastic deformation, and thus can more smoothly pass through the first strip-shaped notch and the second strip-shaped notch and enter the inner cavity of the second cylindrical connecting seat 20; at the same time, after entering the inner cavity of the second cylindrical connecting seat 20, it can quickly return to its original shape and can be stuck by the third strip-shaped notch for limiting.

[0031] Optionally, the cross-section of the rubber belt body 31 along the longitudinal bridge direction is one of a "U" shape, a "W" shape, a side-by-side box shape or a side-by-side circular cross-section. The side-by-side box shape is two juxtaposed square tube structures connected together, and the side-by-side circular shape is two juxtaposed cylindrical structures connected together; it can be selected according to different waterproof requirements and the expansion and contraction stroke of the expansion joint.

[0032] The installation method of the bridge expansion joint waterproof structure of the embodiment of the present utility model is as follows:

[0033] As Figure 1As shown in the figure, a step groove is opened at the end of two adjacent beam bodies of the bridge. After the first cylindrical connecting seat 10 is placed into the step groove, it is anchored by the anchoring concrete 40. After the installation of the two first cylindrical connecting seats 10 is completed, as Figure 2 and Figure 3 shown, the two rubber connecting ends 32 of the waterproof belt 30 are respectively inserted into the inner cavity of the first cylindrical connecting seat 10 from the end sides of the two first cylindrical connecting seats 10 and pulled in place along the transverse direction of the bridge. After the two rubber connecting ends 32 of the full-length waterproof belt 30 completely enter the inner cavity of the first cylindrical connecting seat 10, as Figure 4 shown, use a tool to press down the middle part of the waterproof belt 30 to pull the two rubber connecting ends 32. Since there is a telescopic hole 33 in the center of the two rubber connecting ends 32, the first strip-shaped notch will squeeze the rubber connecting ends 32 to produce elastic deformation and embed into the inner cavity of the second cylindrical connecting seat 20. As Figure 5 shown, after the rubber connecting ends 32 are deformed and restored, they will fill the entire inner cavity of the second cylindrical connecting seat 20, and water cannot flow into the second cavity, thus completing the new assembly of the waterproof belt 30.

[0034] The replacement method of the waterproof structure of the bridge expansion joint in the embodiment of the present invention is divided into the following situations:

[0035] 1. If the waterproof belt 30 is not severely damaged or aged, the hard removal method is adopted. As Figure 6 shown, this method is to make part of the front side of the two angle steels 21 elastically deformed to increase the width of the third strip-shaped notch, and then use a tool to press down the middle part of the waterproof belt 30 to pull the two rubber connecting ends 32, so that the two rubber connecting ends 32 are directly taken out from between the two third strip-shaped notches. After the old waterproof belt 30 is taken out, a new waterproof belt 30 can be reinstalled according to the above installation steps.

[0036] 2. If the waterproof belt 30 is severely damaged or aged, as Figure 7 shown, first cut the rubber belt body 31 of the waterproof belt 30 in the middle with a knife or a tool; as Figure 8 shown, then use a tool to clamp the rubber connecting end 32 and pull it to make the rubber connecting end 32 enter the inner cavity of the first cylindrical connecting seat 10, and continue to pull the rubber connecting end 32 to make the cut rubber belt body 31 pass through the third strip-shaped notch, the second strip-shaped notch and the first strip-shaped notch in sequence and be pulled out. Finally, a new waterproof belt 30 can be reinstalled according to the above installation steps.

[0037] The above replacements are all realized from both ends of the expansion joint, and no operation is required on the main body of the expansion joint. It solves the problem that the waterproof system of the comb-tooth plate type expansion device in the prior art is difficult to replace or cannot be replaced, thus restricting its use and promotion. The waterproof structure of the bridge expansion joint in the embodiment of the present invention has the following technical effects:

[0038] 1) When used in combination with the main structure of the toothed plate type or noise reduction type expansion device, it can achieve convenient and rapid replacement of the waterproof system with good economic effects; it can achieve rapid traffic opening, with a short time for closing lanes or the replacement of the waterproof system can be completed without closing lanes.

[0039] 2) It has good waterproof effects and economy. Since the steel materials used are all common section steel materials in the existing market, they are convenient for processing and have low costs.

[0040] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bridge expansion joint waterproof structure, which is applied between two adjacent sections of bridge beams, and opposite step grooves are provided at the ends of the two sections of the beams, characterized in that: The waterproof structure of bridge expansion joints includes: A first cylindrical connecting seat (10), wherein the first cylindrical connecting seat (10) is two in number, and the two first cylindrical connecting seats (10) are relatively installed in the step grooves of the two sections of the beam body through anchoring concrete (40), and the front side wall of the first cylindrical connecting seat (10) is provided with a first strip-shaped notch extending in the transverse direction of the bridge; A second cylindrical connecting seat (20), wherein the number of the second cylindrical connecting seats (20) is two, and the two second cylindrical connecting seats (20) are arranged in parallel on the front side walls of the two first cylindrical connecting seats (10), the rear side wall of the second cylindrical connecting seat (20) is provided with a second strip-shaped slot extending along the transverse bridge direction, and the front side wall of the second cylindrical connecting seat (20) is provided with a third strip-shaped slot extending along the transverse bridge direction, the second strip-shaped slot is opposite to and connected with the first strip-shaped slot, and the width of the second strip-shaped slot and the first strip-shaped slot along the vertical direction is greater than the width of the third strip-shaped slot along the vertical direction; A waterproof belt (30), the waterproof belt (30) comprising a rubber belt body (31) and rubber connecting ends (32) arranged at opposite ends of the rubber belt body (31) along the longitudinal bridge direction, the two rubber connecting ends (32) being detachably mounted in two of the second cylindrical connecting seats (20) so that the rubber belt body (31) can seal the expansion joint between the ends of the two sections of the beam body; The rubber connecting end (32) is capable of telescopic deformation in a vertical direction to pass through the first strip-shaped slot and the second strip-shaped slot.

2. The bridge expansion joint waterproof structure according to claim 1, characterized in that: The first cylindrical connection seat (10) is a rectangular steel pipe, and the front side wall of the first cylindrical connection seat (10) is flush with the front side wall of the anchoring concrete (40).

3. The bridge expansion joint waterproof structure according to claim 1, characterized in that: The second cylindrical connecting seat (20) comprises two angle steels (21), the inner angles of the two angle steels (21) are arranged opposite to each other up and down, the rear sides of the two angle steels (21) are fixedly connected to the front side wall of the first cylindrical connecting seat (10) and form the second strip-shaped notch, and the front sides of the two angle steels (21) are free edges and form the third strip-shaped notch.

4. The bridge expansion joint waterproof structure according to claim 3 is characterized in that: The second cylindrical connecting seat (20) further comprises: Two groups of reinforcing plates (50), the two groups of reinforcing plates (50) being correspondingly arranged between the rear side walls of the two angle steels (21) and the front side walls of the first cylindrical connecting seat (10) so as to reinforce the connection between the two angle steels (21) and the first cylindrical connecting seat (10); There are multiple reinforcing plates (50) in each group, and the multiple reinforcing plates (50) in each group are evenly spaced along the length direction of the angle steel (21).

5. The bridge expansion joint waterproof structure according to claim 3, characterized in that: The cross section of the rubber connecting end (32) is a pentagonal structure; Wherein, a side wall of the rubber connecting end (32) is opposite to the second strip-shaped notch, and a top corner of the rubber connecting end (32) is opposite to the third strip-shaped notch.

6. The bridge expansion joint waterproof structure according to claim 1, characterized in that: The rubber connecting end (32) is provided with a telescopic hole (33) extending along its length direction.

7. The bridge expansion joint waterproof structure according to claim 6, characterized in that: The telescopic hole (33) is a circular hole.

8. The bridge expansion joint waterproof structure according to claim 1, characterized in that: The cross section of the rubber belt body (31) along the longitudinal bridge direction is one of a "U" shape, a "W" shape, a side-by-side box shape or a side-by-side circular cross section.

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