Comb-shaped plate bridge expansion device with waterproof structure

Abstract

The present invention discloses a comb-tooth plate bridge expansion device with a waterproof structure. A water retaining plate is vertically welded to the edge of the solid plate of the span plate. The water retaining plate as a whole always covers the beam seam between the bridge sections. The edge of the slide plate is bent upward to form a bent portion. A second rubber plate is attached to the side of the bent portion away from the second anti-collision guardrail. The water retaining plate slides along the second rubber plate as the comb-tooth plate bridge expansion device expands and contracts. The present invention provides a water retaining plate and a bent portion on the span plate and slide plate of the comb-tooth plate bridge expansion device with a waterproof structure, as well as corresponding rubber plates. This allows the vast majority of rainwater on the bridge deck to pass through the bridge expansion device and be discharged from the bridge deck water collection well. This controls the flow of only a small amount of rainwater into the waterstop, ensuring that the waterstop is not easily filled with rainwater and causes rainwater to flow out, thereby preventing the surface of the cap beam pier from being polluted and damaged by rainwater.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge engineering, and in particular to a comb-tooth plate type bridge expansion device with a waterproof structure. Background Art

[0002] The comb-tooth plate type bridge expansion device is generally composed of a span plate, a fixed plate, a stainless steel slide plate, a water stop, etc. It can be divided into a span type and a riding type according to whether the tooth plate part of the span plate is always located on one side of the bridge structure seam during the expansion and contraction operation of the bridge expansion device. The tooth plate part of the span plate of the span type bridge expansion device is always located on the same side of the bridge structure seam. The comb-tooth plate type bridge expansion device is relatively advantageous for bridge deck drainage. However, due to the thick span plate and the tooth plate structure of the comb plate, the junction of the expansion device and the inner edge of the anti-collision guardrail is horizontally connected, resulting in rainwater flowing down from the higher part of the bridge deck unable to flow from the bridge section on one side of the beam seam through the bridge expansion device to the bridge section on the other side, and then most of the rainwater is discharged from the bridge deck water collection well; instead, it flows directly into the water stop below the expansion device. While waterstops prevent rainwater from falling directly onto the ground, heavy rainfall can cause them to overflow and flow out. Furthermore, waterstops are susceptible to damage and aging in prolonged rainy conditions, which can cause rainwater to leak from the bridge deck and cause varying degrees of contamination and damage to the cap beam and pier surfaces. Reducing the amount of water flowing from the bridge deck into the waterstops has become a major challenge for comb-plate expansion joints. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the comb-tooth plate type expansion device cannot drain water in time when the rainfall is heavy, and to provide a comb-tooth plate type bridge expansion device with a waterproof structure.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a comb-tooth plate type bridge expansion and contraction device with a waterproof structure, the comb-tooth plate type bridge expansion and contraction device includes a span plate, a fixed plate, and a slide plate, the span plate is fixedly arranged on the first bridge section, and the edge of the first bridge section is provided with a first anti-collision guardrail; the fixed plate is fixedly arranged on the second bridge section, and the edge of the second bridge section is provided with a second anti-collision guardrail; the slide plate is located below the fixed plate; it is characterized in that the comb-tooth plate type bridge expansion and contraction device also includes a water baffle, the water baffle is welded to the edge of the span plate, and the water baffle always covers the beam gap between the first bridge section and the second bridge section; a first rubber plate is attached to the inner edge of the first anti-collision guardrail, and the first rubber plate is tightly attached to the inner edge of the first anti-collision guardrail and the water baffle; the edge of the slide plate is bent upward to form a bending portion; a third rubber plate is arranged between the bending portion and the second anti-collision guardrail, and the third rubber plate is tightly attached to the second anti-collision guardrail and the bending portion respectively; a second rubber plate is attached to the side of the bending portion away from the second anti-collision guardrail, and the water baffle is always tightly attached to the second rubber plate.

[0006] Preferably, the cross-seam plate includes a tooth plate and a solid plate, and the solid plate always covers the beam seam.

[0007] Preferably, the portion of the water retaining plate located on the second bridge section is in close contact with the second rubber plate, and the water retaining plate is used to slide along the second rubber plate as the comb-tooth plate type bridge expansion and contraction device expands and contracts.

[0008] Preferably, the edges between the first anti-collision guardrail and the first rubber plate are sealed with sealant; and the edges between the bent portion and the second anti-collision guardrail are both sealed with sealant.

[0009] Preferably, the length of the water retaining plate is the same as the length of the solid plate.

[0010] Preferably, the slide plate is made of stainless steel.

[0011] Preferably, a waterstop is provided between the first bridge section and the second bridge section.

[0012] Preferably, the total thickness of the third rubber sheet, the bent portion and the second rubber sheet is the same as the thickness of the first rubber sheet.

[0013] The positive progressive effect of the present invention is that: on the basis of the structure of the conventional comb-tooth plate type bridge expansion device, by welding water retaining plates, bending stainless steel slides, pasting rubber plates and other measures, that is, water retaining plates and bending parts are respectively provided on the cross-seam plates and slides of the comb-tooth plate type bridge expansion device with a waterproof structure, and corresponding rubber plates are provided, so that rainwater flowing through the bridge deck along the edge of the anti-collision guardrail can be effectively transferred across the beam seams of the bridge structure and discharged from the bridge deck water collection well, and only a small amount of rainwater is controlled to flow into the waterstop, ensuring that the waterstop is not easily overflowed by rainwater and causing rainwater to flow out, thereby avoiding damage to the surface of the cap beam pier by rainwater pollution; effectively solving the problem of easy leakage of the bridge expansion device, and having high application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural plan diagram of the comb-tooth plate type bridge expansion device in a preferred embodiment of the present invention.

[0015] Figure 2 for Figure 1 AA section view in.

[0016] Figure 3 for Figure 1 BB cross-section view in.

[0017] Figure 4 for Figure 3 A partial enlarged view of part 101.

[0018] Figure 5 for Figure 1 CC section view in.

[0019] Figure 6 for Figure 5 A partial enlarged view of part 102.

[0020] Figure 7 for Figure 1 DD cross-sectional view in.

[0021] Figure 8 for Figure 7 A partial enlarged view of part 103.

[0022] Figure 9 for Figure 1 EE cross-sectional view in.

[0023] Figure 10 for Figure 9 A partial enlarged view of part 104.

[0024] Description of reference numerals:

[0025] Cross seam plate 1

[0026] Tooth plate 1.1 of cross-slit plate 1

[0027] Solid plate 1.2 of cross-seam plate 1

[0028] Fixed plate 2

[0029] Water retaining plate 4

[0030] First rubber sheet 5.1

[0031] Second rubber sheet 5.2

[0032] The third rubber sheet 5.3

[0033] Skateboard 7

[0034] Bending part 7.1

[0035] Beam joint 8

[0036] First bridge section 11

[0037] Second bridge section 12

[0038] Anti-collision guardrail structure seam cover plate 15

[0039] Waterstop 16

[0040] Anchor 17

[0041] First crash barrier 21

[0042] Second anti-collision guardrail 22 DETAILED DESCRIPTION

[0043] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0044] See also Figure 1-10 As shown, this embodiment provides a comb plate bridge expansion device with a waterproof structure. Figure 1-2The comb plate bridge expansion device includes a span plate 1, a fixed plate 2, and a slide plate 7. The span plate 1 is fixed to the first bridge section 11, and the first anti-collision guardrail 21 is located at the edge of the first bridge section 11; the fixed plate 2 is fixed to the second bridge section 12, and the second anti-collision guardrail 22 is located at the edge of the second bridge section 12; the slide plate 7 is located below the fixed plate 2; an anti-collision guardrail structure seam cover plate 15 is provided on the first anti-collision guardrail 21 and the second anti-collision guardrail 22; the anti-collision guardrail structure seam cover plate 15 is provided inside The anchor bars 17 fix it to the first anti-collision guardrail 21; the anti-collision guardrail structure seam cover plate 15 and the second anti-collision guardrail 22 are not fixed and can move relative to each other; the cross-seam plate 1 includes a tooth plate 1.1 and a solid plate 1.2, and the solid plate 1.2 always covers the beam seam 8 between the first bridge section 11 and the second bridge section 12 during the movement; since the comb-tooth plate type bridge expansion device in this embodiment is a cross-seam type, the tooth plate 1.1 of the cross-seam plate 1 is always located above the second bridge section 12.

[0045] The comb-tooth plate type bridge expansion device is provided with a water retaining plate 4, which is welded to the edge of the solid plate 1.2. When the solid plate 1.2 moves on the slide plate 7, the water retaining plate 4 also moves accordingly, and the entire water retaining plate 4 always covers the beam gap length between the first bridge section 11 and the second bridge section 12; a first rubber sheet 5.1 is pasted between the inner edge of the first anti-collision guardrail 21 and the water retaining plate 4; the edge of the slide plate 7 is bent upward to form a bending portion 7.1; a third rubber sheet 5.3 is pasted between the bending portion 7.1 and the inner edge of the second anti-collision guardrail 22; the second rubber sheet 5.2 is pasted on the side of the bending portion 7.1 away from the second anti-collision guardrail 22, that is, the side close to the bridge deck, and the lengths of the second rubber sheet 5.2 and the third rubber sheet 5.3 are set with reference to the bending portion 7.1. As a preferred embodiment, the water retaining plate 4 can be set to the same length as the solid plate 1.2, and the slide plate 7 is set flush with the end of the second bridge section 12, so that the water retaining plate 4 is always in close contact with the second rubber plate 5.2, that is, by being in close contact with the two, it is ensured that the area from the second anti-collision guardrail 22 to the bridge deck is fully sealed, so that the water on the bridge surface can flow from the bridge section on the side with a higher elevation to the bridge section on the other side.

[0046] Specifically, see Figure 7-8 As a preferred embodiment, after the water retaining plate 4 crosses the beam seam 8, it is in close contact with the second rubber plate 5.2 and slides along the surface of the second rubber plate 5.2 as the bridge expands and contracts. During this process, rainwater on the bridge deck can flow through the comb-tooth plate bridge expansion device. The rainwater on the spanning plate 1 will not flow into the water stop 16 at the position of the beam seam 8 due to the water retaining plate 4 (see Figure 5-6 ).

[0047] Specifically, see Figure 1-2As a preferred embodiment, on the side of the first bridge section 11, the ends and edges of the first rubber sheet 5.1 and the water retaining plate 4 are sealed with the anti-collision guardrail 21 with sealant; similarly, on the side of the second bridge section 12, the ends and edges of the bent portion 7.1, the second rubber sheet 5.2 and the third rubber sheet 5.3 are also sealed with the second anti-collision guardrail 22 with sealant.

[0048] Specifically, see Figure 1-2 The spanning plate 1 comprises a toothed plate portion 1.1 and a solid plate portion 1.2. The solid plate 1.2 spans the beam gap 8. Regardless of the expansion and contraction state of the comb-toothed plate bridge expansion device, the solid plate 1.2 always covers the bridge structure beam gap 8. The water retaining plate 4 is fixed above the solid plate 1.2. In a preferred embodiment, the water retaining plate 4 and the solid plate 1.2 are the same length.

[0049] As a preferred embodiment, the slide plate 7 is made of stainless steel.

[0050] See also Figure 1-2 A waterstop 16 is provided between the first bridge section 11 and the second bridge section 12. When no waterproof structure is provided, assuming that the bridge deck elevation of the second bridge section 12 is higher, the rainwater flowing down from the second bridge section 12 will flow along the longitudinal slope of the bridge deck through the edge of the second anti-collision guardrail 22, and will flow from the beam joint 8 between the first anti-collision guardrail 21 and the second anti-collision guardrail 22 into the waterstop 16. In this way, when the bridge deck is wider and the bridge length is longer, the amount of rainfall flowing into the waterstop 16 is larger, and the rainwater may overflow the waterstop and flow out. At the same time, the waterstop is easily damaged and aged in a long-term rain environment, which will cause rainwater on the bridge deck to leak out, thereby causing varying degrees of pollution damage to the surface of the cap beam pier. When the above-mentioned waterproof structure is adopted, due to the obstruction of the water retaining plate 4, rainwater can pass through the beam seam 8 between the anti-collision guardrails 21 and 22 without flowing into the waterstop 16. The waterstop 16 only serves as a channel for rainwater to flow out from the tiny gap between the span plate 1 and the slide plate 7. The amount of rainwater is extremely small and will not cause any pollution or damage to the surface of the bridge structure.

[0051] It should be noted that the present embodiment describes only one side of the telescopic device of the comb-tooth plate bridge with a waterproof structure. Those skilled in the art should know that in actual engineering applications, the other side is a symmetrical design.

[0052] The positive progressive effect of the present invention is that by respectively arranging water retaining plates and bending parts on the span plates and sliding plates of the comb-tooth plate type bridge expansion device with a waterproof structure, and arranging corresponding rubber plates, most of the rainwater on the bridge deck can pass through the bridge expansion device and be discharged from the bridge deck water collection well; thereby controlling only a small amount of rainwater to flow into the waterstop, ensuring that the waterstop is not easily overflowed by rainwater and causing rainwater to flow out, and avoiding damage to the surface of the cap beam pier by rainwater pollution.

[0053] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A comb-tooth plate bridge expansion and contraction device with a waterproof structure, comprising a span plate, a fixed plate, and a slide plate, wherein the span plate is fixedly mounted on a first bridge section, and a first anti-collision guardrail is provided on the edge of the first bridge section; the fixed plate is fixedly mounted on a second bridge section, and a second anti-collision guardrail is provided on the edge of the second bridge section; the slide plate is located below the fixed plate; and is characterized in that: The comb-tooth plate type bridge expansion and contraction device also includes a water baffle, which is welded to the edge of the span plate and always covers the beam gap between the first bridge section and the second bridge section; a first rubber plate is attached to the inner edge of the first anti-collision guardrail, and the first rubber plate is in close contact with the inner edge of the first anti-collision guardrail and the water baffle; the edge of the slide plate is bent upward to form a bent portion; a third rubber plate is provided between the bent portion and the second anti-collision guardrail, and the third rubber plate is in close contact with the second anti-collision guardrail and the bent portion respectively; a second rubber plate is attached to the side of the bent portion away from the second anti-collision guardrail, and the water baffle is always in close contact with the second rubber plate; The cross-seam plate includes a tooth plate and a solid plate, and the solid plate always covers the beam seam; A waterstop is provided between the first bridge section and the second bridge section.

2. The comb-tooth plate bridge expansion device according to claim 1, characterized in that: The portion of the water retaining plate located on the second bridge section is in close contact with the second rubber plate, and the water retaining plate is used to slide along the second rubber plate as the comb-tooth plate type bridge expansion and contraction device expands and contracts.

3. The comb-tooth plate bridge expansion device according to claim 1, characterized in that: The edges between the first anti-collision guardrail and the first rubber plate are sealed with sealant; the edges between the bent portion and the second anti-collision guardrail are sealed with sealant.

4. The comb-tooth plate bridge expansion device according to claim 1, characterized in that: The length of the water retaining plate is the same as that of the solid plate.

5. The comb-tooth plate bridge expansion device according to claim 1, characterized in that: The slide plate is made of stainless steel.

6. The comb-tooth plate bridge expansion device according to claim 1, characterized in that: The total thickness of the third rubber sheet, the bent portion, and the second rubber sheet is the same as the thickness of the first rubber sheet.

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