New composite corrugated plate bridge structure

Abstract

The present invention relates to a novel composite corrugated plate bridge structure, comprising a plurality of reinforced concrete arch seats arranged on a foundation, a corrugated plate arch ring fixedly connected between two groups of adjacent reinforced concrete arch seats, the corrugated plate arch ring comprising a corrugated steel plate layer, a reinforcing steel wire mesh and a concrete layer, the wave crests and troughs of the edges of a plurality of corrugated steel plates are stacked in sequence and fixed by a plurality of long-rod bolts in the direction of the bridge deck, the portion of the long-rod bolt extending out of the corrugated steel plate is connected to the lower thread of the sleeve nut sleeve, the upper thread of the sleeve nut sleeve is connected to the fixing screw, a plurality of groups of fixing screws constitute a fixing screw array vertically along the corrugated steel plate layer, the fixing screw array is fixedly connected to at least one layer of reinforcing steel wire mesh, and a concrete layer is filled between the reinforcing steel wire mesh and between the reinforcing steel wire mesh and the corrugated steel plate layer. The present invention adopts a corrugated steel plate as the main pressure-bearing structure of the bridge to increase the overall flexural rigidity and endurance of the bridge; the construction period can be greatly shortened and the construction cost can be saved.

Description

Technical Field

[0001] The invention relates to an arch bridge structure, in particular to a novel composite corrugated plate bridge structure. Background Art

[0002] An arch bridge refers to a bridge that uses an arch as the main load-bearing structural component in a vertical plane.

[0003] Most of the small and medium-sized arch bridges are traditional reinforced concrete structures, which require large construction workload, long design and construction time, and high maintenance costs after completion.

[0004] Corrugated steel plate is a new product that can be widely used in various roads and bridges. Compared with reinforced concrete structures, it has the advantages of small interface, good flexibility, light weight, easy production and transportation, simple construction, and short construction period. It is currently widely used in road culverts. How to expand the application of corrugated plates in bridge structures through detailed improvements on bridge structures so that they have a fast and safe installation process and excellent structural strength is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The invention provides a novel composite corrugated plate bridge structure, which solves the problems of complex construction process and poor mechanical strength of the traditional arch bridge structure in the prior art.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] A novel composite corrugated plate bridge structure comprises a plurality of reinforced concrete arch seats arranged on a foundation, wherein each reinforced concrete arch seat is provided with embedded parts, and two groups of adjacent reinforced concrete arch seats are fixedly connected with corrugated plate arch rings, and two ends of the corrugated plate arch rings are fixed between the reinforced concrete arch seats through embedded parts, and a roadbed material is arranged above the corrugated plate arch ring, and the upper end of the roadbed material is a bridge deck, and the corrugated plate arch ring comprises a corrugated steel plate layer, a reinforcing steel wire mesh and a concrete layer, and the corrugated steel plate layer comprises a plurality of corrugated steel plates, and the wave crests and troughs at the edges of the plurality of corrugated steel plates are successively stacked and fixed through a plurality of long-rod bolts toward the bridge deck, and the portion of the long-rod bolt extending out of the corrugated steel plate is connected to the lower thread of a sleeve nut sleeve, and the upper thread of the sleeve nut sleeve is connected with a fixing screw, and a plurality of groups of fixing screws constitute a fixing screw array vertically along the corrugated steel plate layer, and the fixing screw array is fixedly connected with at least one layer of reinforcing steel wire mesh, and a concrete layer is filled between the reinforcing steel wire meshes and between the reinforcing steel wire meshes and the corrugated steel plate layer.

[0008] Furthermore, a layer of reinforcing wire mesh is fixedly connected to the middle and upper parts of the fixed screw array respectively.

[0009] Furthermore, the upper portion of the fixing screw has a bent structure.

[0010] Furthermore, a foam sealing pad is arranged in the overlapping gap between every two corrugated steel plates; and the outer wall of the corrugated steel plate layer is coated with an anti-corrosion coating.

[0011] Furthermore, the wall thickness range of the corrugated steel plate is 2.5 mm-12 mm, the wave pitch * wave height selection includes 380 mm * 140 mm, 150 mm * 50 mm, 200 mm * 55 mm, 230 mm * 64 mm, 300 mm * 110 mm or 400 mm * 150 mm, and the steel plate material includes Q345, Q235 or Q355.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention adopts corrugated steel plate as the main pressure-bearing structure of the bridge. The corrugated steel plate has a curvature as a whole. It is combined with the multi-layer concrete steel mesh structure above the plate body to form an arc-shaped cross-section as a whole. The strength of the corrugated steel plate combined with the concrete steel mesh is more than 5 times that of ordinary concrete, so as to increase the overall flexural rigidity and endurance of the bridge; the bridge support structure assembled by corrugated steel plates can greatly shorten the construction period and save construction costs, and has a good application prospect.

[0014] 2. Due to good mechanical properties, the steel corrugated plate arch bridge of the present invention has a large span, which can reach about 50m. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic cross-sectional view of the novel composite corrugated plate bridge of the present invention.

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of point A.

[0018] Figure 3 It is a schematic diagram of the connection between the long rod bolt, the sleeve nut sleeve and the fixing screw rod of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the steel corrugated plate of the present invention.

[0020] In the figure, 1-reinforced concrete arch seat, 2-roadbed material, 3-bridge deck, 4-corrugated steel plate layer, 5-reinforcement wire mesh, 6-concrete layer, 7-long rod bolt, 8-sleeve nut sleeve, 9-fixing screw, 10-corrugated steel plate. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0022] Embodiment 1:

[0023] See also Figure 1-Figure 3 The new composite corrugated plate bridge structure shown comprises a plurality of reinforced concrete arch seats 1 arranged on the foundation, embedded parts are arranged in each reinforced concrete arch seat 1, corrugated plate arch rings are fixedly connected between two adjacent groups of reinforced concrete arch seats 1, both ends of the corrugated plate arch rings are fixed across between the reinforced concrete arch seats through embedded parts, roadbed materials 2 are filled and laid above the corrugated plate arch rings, the upper end of the roadbed materials 2 is the bridge deck 3, and bridge deck facilities such as bridge anti-collision guardrails are installed on both sides of the bridge deck.

[0024] The corrugated plate arch ring includes a corrugated steel plate layer 4, a reinforcing steel wire mesh 5 and a concrete layer 6. The corrugated steel plate layer 4 includes a plurality of corrugated steel plates 10 connected in sequence. The wave crests and troughs at the edges of the plurality of corrugated steel plates 10 are stacked in sequence and fixed into a sheet through a plurality of long-rod bolts 7 that are inserted toward the bridge deck 3. The portion of the long-rod bolts 7 that extends out of the corrugated steel plate is threadedly connected to the lower thread of a sleeve nut sleeve 8. The upper thread of the sleeve nut sleeve 8 is connected to a fixing screw 9. A plurality of groups of fixing screws 9 constitute a fixing screw array perpendicular to each arc surface of the corrugated steel plate layer 4. At least one layer of reinforcing steel wire mesh 5 is fixedly connected to the fixing screw array. The connection method includes welding. A high-strength concrete layer is filled between each layer of reinforcing steel wire mesh 5 and between the reinforcing steel wire mesh 5 and the corrugated steel plate layer 4.

[0025] In this embodiment, a layer of reinforcing steel mesh 5 is fixedly connected to the middle and upper parts of the fixed screw array respectively, a layer of concrete 6 is filled between the lower reinforcing steel mesh 5 and the corrugated steel plate layer 4, and a layer of concrete 6 is filled between the upper reinforcing steel mesh 5 and the lower reinforcing steel mesh 5.

[0026] See also Figure 3 The upper part of the fixing screw 9 is a bent structure, which can strengthen the attachment and fixing effect with the concrete layer 6 and better strengthen the strength of the corrugated plate arch ring.

[0027] A foam sealing pad is arranged in the overlapping gap between each two corrugated steel plates 10; and an anti-corrosion coating is coated on the outer wall of the corrugated steel plate layer 4. The above arrangement improves the rigidity, durability, earthquake resistance and fire resistance of the bridge structure, solves the corrosion problem of the arch ring of the structure to a certain extent, thereby reducing the cost of the arch ring reinforcement and maintenance in the later stage, and more importantly, greatly increases the span of the arch ring.

[0028] In an embodiment of the present invention, the wall thickness range of the corrugated steel plate 10 is 2.5 mm-12 mm, the wave pitch * wave height selection includes 380 mm * 140 mm, 150 mm * 50 mm, 200 mm * 55 mm, 230 mm * 64 mm, 300 mm * 110 mm or 400 mm * 150 mm, and the steel plate material includes Q345, Q235 or Q355.

[0029] Embodiment 2:

[0030] Different from Example 1, in this embodiment, a layer of reinforcing steel wire mesh 5 is fixedly connected to the upper part of the fixed screw array, and a layer of concrete layer 6 is filled between the reinforcing steel wire mesh 5 and the corrugated steel plate layer 4.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A novel composite corrugated plate bridge structure, comprising a plurality of reinforced concrete arch seats (1) arranged on a foundation, wherein each reinforced concrete arch seat (1) is provided with embedded parts, and corrugated plate arch rings are fixedly connected between two adjacent groups of reinforced concrete arch seats (1), and both ends of the corrugated plate arch rings are fixed between the reinforced concrete arch seats through embedded parts, and a roadbed material (2) is arranged above the corrugated plate arch ring, and the upper end of the roadbed material (2) is a bridge deck (3), characterized in that: The corrugated plate arch ring comprises a corrugated steel plate layer (4), a reinforcing steel wire mesh (5) and a concrete layer (6), wherein the corrugated steel plate layer (4) comprises a plurality of corrugated steel plates (10), the peaks and troughs of the edges of the plurality of corrugated steel plates (10) are stacked in sequence and then fixed in the direction of the bridge deck (3) by a plurality of long-rod bolts (7), the portion of the long-rod bolts (7) extending out of the corrugated steel plate is connected to the lower thread of the sleeve nut sleeve (8), the upper thread of the sleeve nut sleeve (8) is connected to the fixing screw (9), and the plurality of groups of fixing screws (9) constitute a fixing screw array vertically along the corrugated steel plate layer (4), the fixing screw array is fixedly connected to at least one layer of reinforcing steel wire mesh (5), and a concrete layer is filled between the reinforcing steel wire mesh (5) and between the reinforcing steel wire mesh (5) and the corrugated steel plate layer (4); A layer of reinforcing wire mesh (5) is fixedly connected to the middle and upper parts of the fixed screw array respectively; The upper portion of the fixing screw (9) is a bent structure; A foam sealing pad is arranged in the overlapping gap between each two corrugated steel plates (10); and an anti-corrosion coating is coated on the outer wall of the corrugated steel plate layer (4); A layer of concrete (6) is filled between the lower reinforcing steel wire mesh (5) and the corrugated steel plate layer (4), and a layer of concrete (6) is filled between the upper reinforcing steel wire mesh (5) and the lower reinforcing steel wire mesh (5).

2. The novel composite corrugated plate bridge structure according to claim 1 is characterized in that: The wall thickness of the corrugated steel plate (10) ranges from 2.5 mm to 12 mm, the wave pitch*wave height selection includes 380 mm*140 mm, 150 mm*50 mm, 200 mm*55 mm, 230 mm*64 mm, 300 mm*110 mm or 400 mm*150 mm, and the steel plate material includes Q345, Q235 or Q355.

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