Inclined prestress bridge deck pavement and expansion joint integrated structure

Abstract

The utility model provides an oblique prestress bridge deck pavement and expansion joint integrated structure, which belongs to the technical field of bridge construction, and comprises a prestress steel strand paved on an oblique prestress bridge deck, and a notch is arranged on the oblique prestress bridge deck; the expansion joint structure is arranged in the notch; the stiffening plate is arranged in the notch and is arranged on one side far away from the expansion joint structure; the anchoring structure is arranged in the notch and connected between the expansion joint structure and the stiffening plate, and the prestressed steel strand penetrates through the stiffening plate to be connected with the anchoring structure. According to the utility model, the stiffening plates are arranged, and the prestressed steel strands penetrate through the stiffening plates, so that the inclined prestressed bridge floor and the expansion joint structure are connected to form an integrated structure, and the stress performance of the whole structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and relates to an expansion joint technology in the process of bridge deck paving, in particular to an integrated structure of oblique prestressed bridge deck paving and expansion joint. Background Art

[0002] In traditional technology, the process of installing expansion joints on a bridge deck is as follows: first, the inclined prestressed bridge deck is paved, and a groove is reserved at the bridge head. After the inclined prestressed bridge deck is paved, the expansion joint is installed at the groove position, and then concrete is poured.

[0003] Referring to the patent document with application number CN202022066372.8, a traditional expansion joint structure is recorded, and a bridge expansion joint device is specifically disclosed, including a bridge, an expansion joint, and expansion joint steels arranged on both sides of the expansion joint. Reserved grooves are provided on the bridges on both sides of the expansion joint. The expansion joint steels are opened along the length direction of the expansion joint. A plurality of reinforcing plates are provided in the reserved grooves. The plurality of reinforcing plates are fixedly connected to the lower surface of the expansion joint steels. The reinforcing plates are evenly arranged in multiple rows on the lower surface of the expansion joint steels along the length direction of the expansion joint. The plurality of rows of reinforcing plates are symmetrically arranged on both sides of the expansion joint; a plurality of reinforcing ribs are provided in the reserved grooves, and each reinforcing rib corresponds to each reinforcing plate one by one; a plurality of fixed steel bars are provided on the top of the transverse reinforcing ribs, and the plurality of fixed steel bars are arranged along the length direction of the expansion joint and symmetrically on both sides of the expansion joint. The lower peripheral wall of the fixed steel bars is in contact with the upper peripheral wall of the transverse reinforcing ribs; and the two ends of the fixed steel bars are fixedly connected to the two ends of the bridge. The bridge expansion joint device recorded in the patent document is directly installed at the position of the notch after the oblique prestressed bridge deck is paved, and then concrete is poured. This structure has the following problems:

[0004] First, during construction, it is necessary to first lay the inclined prestressed bridge deck, and then fix and install the expansion joint structure. This needs to be completed in two steps, and the construction process is complicated.

[0005] Second, the oblique prestressed bridge deck and the expansion joint structure cannot form an integrated structure, the force-bearing effect is poor, and the concrete in the expansion joint anchoring area is easily damaged. Utility Model Content

[0006] Based on the above background technology, the existing oblique prestressed bridge deck and expansion joint structure need to be completed in two processes, and the oblique prestressed bridge deck and expansion joint structure cannot form an associated integrated structure, resulting in technical problems such as complex construction process and poor force effect. In response to this technical problem, the utility model proposes an oblique prestressed bridge deck pavement and expansion joint integrated structure.

[0007] The utility model arranges a stiffening plate on the outside of the expansion joint structure, passes the prestressed steel strands of the oblique prestressed bridge deck through the stiffening plate and connects them to the anchor structure, so that the oblique prestressed bridge deck and the expansion joint structure form an integrated structure, thereby improving the stress-bearing performance of the entire structure (the overall structure formed by the oblique prestressed bridge deck and the expansion joint structure); and during the construction process, the oblique prestressed bridge deck and the expansion joint structure are completed at one time, thereby simplifying the construction process.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] The utility model discloses an integrated structure of oblique prestressed bridge deck pavement and expansion joint, comprising:

[0010] Prestressed steel strands laid on an oblique prestressed bridge deck, wherein the oblique prestressed bridge deck is provided with notches;

[0011] Expansion joint structure, placed in the notch;

[0012] A stiffening plate is placed in the notch and arranged on a side away from the expansion joint structure;

[0013] and an anchoring structure, which is placed in the notch and connected between the expansion joint structure and the stiffening plate, and the prestressed steel strand passes through the stiffening plate and is connected to the anchoring structure.

[0014] It is further defined that the stiffening plate is provided with stiffening plate through-holes, and the prestressed steel strands pass through the stiffening plate along the stiffening plate through-holes.

[0015] It is further defined that the anchoring structure includes an anchoring plate, and the prestressed steel strands pass through a stiffening plate and are connected to the anchoring plate.

[0016] It is further defined that the anchor plate is provided with anchor plate through holes, and the prestressed steel strand passes through the anchor plate along the anchor plate through holes.

[0017] It is further defined that there are multiple anchor plates, and the multiple anchor plates are connected in parallel between the stiffening plate and the expansion joint structure, and the stiffening plate perforations are arranged between two adjacent anchor plates; the number of stiffening plate perforations on the stiffening plate corresponds to the number of anchor plates.

[0018] It is further defined that each of the stiffening plate through-holes passes through two prestressed steel strands, wherein one prestressed steel strand passes through an anchor plate adjacent to the stiffening plate through-hole, and the other prestressed steel strand passes through another anchor plate adjacent to the stiffening plate through-hole.

[0019] It is further defined that the anchoring structure also includes an anchor pad connected to the anchor plate, and the anchor pad is arranged between the stiffening plate and the expansion joint structure; each of the anchor plates corresponds to two anchor pads, and the two anchor pads are mirrored along the plane where the anchor plate is located, and the prestressed steel strand passes through the stiffening plate, an anchor pad connected to the anchor plate, the anchor plate and another anchor pad connected to the anchor plate in sequence, and is connected to another anchor pad connected to the anchor plate.

[0020] It is further defined that the anchor pad is provided with a first through hole and a second through hole which are not connected to each other; and the two anchor pads corresponding to the same anchor plate are respectively a first anchor pad and a second anchor pad;

[0021] Each of the anchor plates corresponds to two prestressed steel strands; wherein, one prestressed steel strand passes through the stiffening plate, the first through hole of the first anchor pad, the anchor plate and the second through hole of the second anchor pad in sequence and is connected to the second anchor pad; the other prestressed steel strand passes through the stiffening plate, the first through hole of the second anchor pad, the anchor plate and the second through hole of the first anchor pad in sequence and is connected to the first anchor pad, so that the two prestressed steel strands corresponding to the same anchor plate are arranged in a cross shape.

[0022] It is further defined that the expansion joint structure comprises:

[0023] Steel sections, placed in the notches and connected to the anchor plates;

[0024] And a waterproof strip, a steel profile seam is arranged on the steel profile, and the waterproof strip is placed in the steel profile seam.

[0025] It is further defined that the waterproof strip is a rubber strip.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The utility model has an integrated structure of oblique prestressed bridge deck pavement and expansion joints, in which a stiffening plate is arranged in the notch, and the prestressed steel strands on the oblique prestressed bridge deck are passed through the stiffening plate, so that the oblique prestressed bridge deck is connected to the anchoring structure to form an integrated structure, thereby improving the stress-bearing performance of the entire structure (the overall structure formed by the oblique prestressed bridge deck and the expansion joint structure) and avoiding damage to the concrete in the expansion joint anchoring area. The utility model has an integrated structure of oblique prestressed bridge deck pavement and expansion joints, and during the construction process, the prestressed steel strands need to be connected to the expansion joint structure. Therefore, the oblique prestressed bridge deck pavement and the installation of the expansion joint structure need to be completed at one time, which simplifies the construction process.

[0028] 2. The utility model integrates the oblique prestressed bridge deck pavement and the expansion joint structure, which also includes anchor plates and anchor pads. The utility model replaces the traditional anchoring through steel rings with anchoring through anchor plates and anchor pads, so that the force between the oblique prestressed bridge deck and the expansion joint structure can form a good whole, further improving the force performance of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a plan view of the integrated structure of the oblique prestressed bridge deck pavement and expansion joint of the utility model;

[0030] Figure 2 It is the prestressed anchoring structure of the expansion joint;

[0031] Figure 3 It is a structural schematic diagram of the expansion joint structure;

[0032] Figure 4 is the structural schematic diagram of the stiffening plate;

[0033] Figure 5 is a structural schematic diagram of the anchor plate;

[0034] Figure 6 is a structural schematic diagram of an anchor pad;

[0035] Among them, 1- oblique prestressed bridge deck, 101- prestressed steel strand, 2- expansion joint structure, 201- steel section, 202- rubber strip, 203- steel section seam, 3- anchor plate, 301- anchor plate perforation, 4- anchor pad, 401- first perforation, 402- second perforation, 5- stiffening plate, 501- stiffening plate perforation. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the implementation methods described below.

[0037] Example 1

[0038] See also Figure 1The integrated structure of the oblique prestressed bridge deck pavement and expansion joint of this embodiment includes: an expansion joint structure 2, a stiffening plate 5, an anchoring structure and a prestressed steel strand 101 paved on the oblique prestressed bridge deck 1, a notch is provided on the oblique prestressed bridge deck 1, wherein the notch is provided at a position corresponding to the bridgehead on the oblique prestressed bridge deck 1; the expansion joint structure 2, the stiffening plate 5 and the anchoring structure are all placed in the notch, wherein the stiffening plate 5 is provided on a side away from the expansion joint structure 2, and the anchoring structure is connected between the stiffening plate 5 and the expansion joint structure 2, specifically, one side of the anchoring structure is connected to the stiffening plate 5, and the side of the anchoring structure opposite to the stiffening plate 5 is connected to the expansion joint structure 2; the prestressed steel strand 101 passes through the stiffening plate 5 and is connected to the anchoring structure, specifically, an anchor is provided on a side of the prestressed steel strand 101 close to the anchoring structure, and the prestressed steel strand 101 is connected to the anchoring structure through the anchor.

[0039] See also Figure 4 Preferably, a stiffening plate through hole 501 is provided on the stiffening plate 5 , and the prestressed steel strand 101 passes through the stiffening plate 5 along the stiffening plate through hole 501 .

[0040] exist Figure 1 In the embodiment, the expansion joint structure 2 is arranged at the connection of the two oblique prestressed bridge decks 1, and a notch is arranged at the connection position of the two oblique prestressed bridge decks 1; correspondingly, stiffening plates 5 and anchoring structures are arranged on both sides of the expansion joint structure 2, wherein one side of the expansion joint structure 2 is connected to the stiffening plate 5 through the corresponding anchoring structure, and the other side of the expansion joint structure 2 is connected to the stiffening plate 5 through the corresponding anchoring structure. The prestressed steel strands 101 on the oblique prestressed bridge deck 1 are distributed in a cross shape to form a grid structure. While the prestressed steel strands 101 on the oblique prestressed bridge deck 1 are being laid, the connection between the prestressed steel strands 101 and the stiffening plates 5 and the anchoring structure is completed, and the installation of the oblique prestressed bridge deck 1 and the expansion joint structure 2 can be completed by one construction.

[0041] The oblique prestressed bridge deck pavement and expansion joint integrated structure of this embodiment has a stiffening plate 5 set in the notch, and the prestressed steel strands 101 on the oblique prestressed bridge deck 1 are passed through the stiffening plate 5, so that the oblique prestressed bridge deck 1 is connected to the anchor structure to form an integrated structure, which improves the stress performance of the entire structure (the overall structure formed by the oblique prestressed bridge deck 1 and the expansion joint structure 2) and prevents damage to the concrete in the anchor area of ​​the bridge expansion joint. The utility model has an oblique prestressed bridge deck pavement and expansion joint integrated structure, and during the construction process, the prestressed steel strands 101 need to be connected to the expansion joint structure 2. Therefore, the paving of the oblique prestressed bridge deck and the installation of the expansion joint structure 2 need to be completed at one time, which simplifies the construction process.

[0042] Example 2

[0043] The oblique prestressed bridge deck pavement and expansion joint integrated structure of this embodiment is based on embodiment 1, and its anchoring structure includes an anchoring plate 3, and the anchoring plate 3 is connected between the stiffening plate 5 and the expansion joint structure 2, and the prestressed steel strand 101 passes through the stiffening plate 5 and is connected to the anchoring plate 3.

[0044] In this embodiment, there are multiple anchor plates 3, and the multiple anchor plates 3 are connected in parallel between the stiffening plate 5 and the expansion joint structure 2, and the stiffening plate through-holes 501 are arranged between two adjacent anchor plates 3; the number of the stiffening plate through-holes 501 on the stiffening plate 5 corresponds to the number of the anchor plates 3. Specifically, the number of the anchor plates 3 can be 2, 3, 4, 5, or even more, and the specific number is set according to the width of the oblique prestressed bridge deck 1, the size of the prestress, etc.

[0045] Each of the stiffening plate through-holes 501 passes through two prestressed steel strands 101 , wherein one prestressed steel strand 101 passes through an anchor plate 3 adjacent to the stiffening plate through-hole 501 , and the other prestressed steel strand 101 passes through another anchor plate 3 adjacent to the stiffening plate through-hole 501 .

[0046] Preferably, see Figure 5 The anchor plate 3 is provided with an anchor plate through hole 301 , and the prestressed steel strand 101 passes through the anchor plate 3 along the anchor plate through hole 301 .

[0047] Example 3

[0048] See also Figure 2 The oblique prestressed bridge deck pavement and expansion joint integrated structure of this embodiment, on the basis of embodiment 2, its anchoring structure also includes an anchor pad 4, the anchor pad 4 is connected to the anchor plate 3, and is arranged between the stiffening plate 5 and the expansion joint structure 2; each anchor plate 3 corresponds to two anchor pads 4, and the two anchor pads 4 are mirrored along the plane where the anchor plate 3 is located, and the prestressed steel strand 101 passes through the stiffening plate 5, an anchor pad 4 connected to the anchor plate 3, the anchor plate 3 and another anchor pad 4 connected to the anchor plate 3 in sequence, and is connected to another anchor pad 4 connected to the anchor plate 3.

[0049] See also Figure 6The anchor pad 4 is provided with a first through hole 401 and a second through hole 402 which are not connected to each other; the two anchor pads 4 corresponding to the same anchor plate 3 are respectively set to be the first anchor pad and the second anchor pad; each anchor plate 3 corresponds to two prestressed steel strands 101; wherein, one prestressed steel strand 101 passes through the stiffening plate 5, the first through hole 401 of the first anchor pad, the anchor plate 3 and the second through hole 402 of the second anchor pad in sequence and is connected to the second anchor pad; the other prestressed steel strand 101 passes through the stiffening plate 5, the first through hole 401 of the second anchor pad, the anchor plate 3 and the second through hole 402 of the first anchor pad in sequence and is connected to the first anchor pad, so that the two prestressed steel strands 101 corresponding to the same anchor plate 3 are arranged in a cross shape, and then the prestressed steel strands 101 on the oblique prestressed bridge deck 1 are arranged in a cross shape.

[0050] In this embodiment, the prestressed steel strand 101 and the first anchor pad are connected by anchors, and the prestressed steel strand 101 and the second anchor pad are connected by anchors. The stiffening plate 5 and the anchor plate 3, the stiffening plate 5 and the anchor pad 4, and the anchor plate 3 and the anchor pad 4 are all fixedly connected. Specifically, the fixed connection can be bolted, riveted, welded, etc. Preferably, the fixed connection is welded.

[0051] Example 4

[0052] See also Figure 3 In this embodiment, the oblique prestressed bridge deck pavement and expansion joint integrated structure is based on the embodiment 1. The expansion joint structure 2 includes a steel section 201 and a waterproof strip, wherein the steel section 201 is placed in the notch and connected to the anchor plate 3; a steel section seam 203 is provided on the steel section 201, and the waterproof strip is placed in the steel section seam 203. The anchor plate 3 and the steel section 201 are fixedly connected. Specifically, the fixed connection can be bolted, riveted, welded, etc. Preferably, the fixed connection is welded.

[0053] In this embodiment, the waterproof strip may be an elastic structure such as a rubber strip 202 , a plastic strip, a rubber ring, etc. Preferably, in this embodiment, the waterproof strip is a rubber strip 202 .

[0054] The utility model is an integrated structure of oblique prestressed bridge deck pavement and expansion joint, and its working principle is: the pulling effect of the prestressed steel strand 101 causes the prestress generated by the oblique prestressed bridge deck 1 to be transmitted to the prestressed steel strand 101, and under the anchoring action of the first anchor pad and the second anchor pad, the prestressed steel strand 101 transmits the prestress to the expansion joint structure 2 in sequence through the stiffening plate 5, the anchor plate 3, the first anchor pad and the second anchor pad, and the expansion joint structure 2 can prevent the concrete in the anchoring area of ​​the bridge expansion joint from being damaged.

[0055] The utility model forms an integral force-bearing structure between the oblique prestressed bridge deck 1 and the expansion joint structure 2 through the stiffening plate 5, the anchor plate 3, the first anchor pad and the second anchor pad, thereby ensuring better anchoring of the prestressed steel strand 101 and preventing damage to the concrete in the anchoring area of ​​the bridge expansion joint.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The oblique prestressed bridge deck pavement and expansion joint integrated structure is characterized by: include: A prestressed steel strand (101) paved on an oblique prestressed bridge deck (1), wherein the oblique prestressed bridge deck (1) is provided with a notch; An expansion joint structure (2) is placed in the slot; A stiffening plate (5) is placed in the slot and is arranged on a side away from the expansion joint structure (2); and an anchoring structure, which is placed in the notch and connected between the expansion joint structure (2) and the stiffening plate (5); the prestressed steel strand (101) passes through the stiffening plate (5) and is connected to the anchoring structure.

2. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 1 is characterized in that: The stiffening plate (5) is provided with a stiffening plate through-hole (501), and the prestressed steel strand (101) passes through the stiffening plate (5) along the stiffening plate through-hole (501).

3. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 2 is characterized in that: The anchoring structure comprises an anchoring plate (3), and the prestressed steel strand (101) passes through a stiffening plate (5) and is connected to the anchoring plate (3).

4. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 3 is characterized in that: The anchor plate (3) is provided with an anchor plate through hole (301), and the prestressed steel strand (101) passes through the anchor plate (3) along the anchor plate through hole (301).

5. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 3 is characterized in that: There are a plurality of anchor plates (3), and the plurality of anchor plates (3) are connected in parallel between the stiffening plate (5) and the expansion joint structure (2), and the stiffening plate through-holes (501) are arranged between two adjacent anchor plates (3); the number of stiffening plate through-holes (501) on the stiffening plate (5) corresponds to the number of anchor plates (3).

6. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 5 is characterized in that: Each of the stiffening plate through-holes (501) passes through two prestressed steel strands (101), wherein one prestressed steel strand (101) passes through an anchor plate (3) adjacent to the stiffening plate through-hole (501), and the other prestressed steel strand (101) passes through another anchor plate (3) adjacent to the stiffening plate through-hole (501).

7. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 6 is characterized in that: The anchoring structure further comprises an anchor pad (4) connected to the anchor plate (3), wherein the anchor pad (4) is arranged between the stiffening plate (5) and the expansion joint structure (2); each of the anchor plates (3) corresponds to two anchor pads (4), and the two anchor pads (4) are arranged in a mirror image along the plane where the anchor plate (3) is located; the prestressed steel strand (101) sequentially passes through the stiffening plate (5), an anchor pad (4) connected to the anchor plate (3), the anchor plate (3) and another anchor pad (4) connected to the anchor plate (3), and is connected to another anchor pad (4) connected to the anchor plate (3).

8. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 7 is characterized in that: The anchor pad (4) is provided with a first through hole (401) and a second through hole (402) which are not connected to each other; the two anchor pads (4) corresponding to the same anchor plate (3) are respectively set as the first anchor pad and the second anchor pad; Each of the anchor plates (3) corresponds to two prestressed steel strands (101); wherein one prestressed steel strand (101) sequentially passes through the stiffening plate (5), the first through hole (401) of the first anchor pad, the anchor plate (3) and the second through hole (402) of the second anchor pad and is connected to the second anchor pad; another prestressed steel strand (101) sequentially passes through the stiffening plate (5), the first through hole (401) of the second anchor pad, the anchor plate (3) and the second through hole (402) of the first anchor pad and is connected to the first anchor pad, so that the two prestressed steel strands (101) corresponding to the same anchor plate (3) are arranged in a cross shape.

9. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 3 is characterized in that: The expansion joint structure (2) comprises: The steel section (201) is placed in the notch and connected to the anchor plate (3); and a waterproof strip, wherein a profile steel seam (203) is provided on the profile steel (201), and the waterproof strip is placed in the profile steel seam (203).

10. The integrated structure of oblique prestressed bridge deck pavement and expansion joint according to claim 9, characterized in that: The waterproof strip is a rubber strip (202).

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