Rural highway bridge structure

Abstract

The utility model relates to the technical field of bridge construction, and discloses a rural highway bridge structure, which is characterized by comprising a pier, a cover beam, a padstone, a support and a T-shaped beam, the bridge piers are vertically arranged, the top elevations of the bridge piers are sequentially reduced from the middle to the two sides, the bent caps are erected on the bridge piers, and one bent cap is arranged on at least two adjacent bridge piers; the group of cushion stones are arranged on the cover beam, the supports are arranged on the cushion stones, and the positions and the number of the supports are in one-to-one correspondence with those of the cushion stones; the two ends of the T-shaped beam are respectively erected on the supports of the two adjacent cover beams; the bridge piers incline 2% from the center line of the road to the two sides of the road, the drainage performance of the bridge is improved, meanwhile, water accumulation on the top of the bent cap can be prevented, and the service life of the bridge can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge construction technology, specifically to a rural highway bridge structure. Background Technology

[0002] With the implementation of the rural revitalization policy, rural roads have become an important link between rural areas and cities, making rural road construction particularly important. For suburban rural areas adjacent to large cities, traffic volume is high, and the road grade requirements are higher than those for general rural areas. Bridge construction is inevitable in the process of rural road construction, so the structural performance of bridges plays a core role in rural road construction. In addition, bridge construction takes a long time in the entire rural road construction process. In order to improve construction efficiency and bridge performance, this utility model proposes a new type of rural highway bridge structure. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a rural road bridge structure.

[0004] The technical solution of this utility model is as follows:

[0005] A rural road bridge structure, characterized in that it includes piers, cap beams, pad stones, supports, and T-beams; a set of piers are vertically arranged, and their top elevations decrease sequentially from the middle to both sides; the cap beams are erected on the piers, and at least one cap beam is set on each of two adjacent piers; a set of pad stones are set on the cap beams, and the supports are set on the pad stones, with the positions and quantities of the supports and pad stones corresponding one-to-one; the two ends of the T-beams are respectively erected on the supports of two adjacent cap beams.

[0006] Furthermore, a longitudinal expansion joint is provided between two adjacent T-beams between adjacent cap beams to accommodate thermal expansion and contraction between the T-beams.

[0007] Furthermore, an expansion joint device is installed at the longitudinal expansion joint location. The expansion joint device includes a rubber block, a steel plate, and chemical anchors. The rubber block is erected between two adjacent T-beams, the steel plate is wrapped around the outside of the rubber block, and the chemical anchors are installed at one end of the steel plate and pass through the steel plate and the rubber block in sequence to be fixed on one of the T-beams.

[0008] Furthermore, a longitudinal expansion joint of 15-20mm, preferably 20mm, is provided between adjacent T-beams.

[0009] Furthermore, baffles are provided on both sides of the cap beam to limit and block the T-beam.

[0010] Furthermore, a leveling layer, a waterproof layer, and an asphalt layer are sequentially installed on the T-beam from bottom to top to form the bridge deck pavement.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1) The bridge piers are inclined at 2% from the center line of the road to both sides of the road to improve the drainage performance of the bridge and prevent water accumulation on the top of the cap beam, which helps to extend the service life of the bridge.

[0013] 2) Expansion joints are installed between two adjacent T-beams, and expansion joint devices are installed at the expansion joints between two adjacent T-beams between adjacent cap beams to further improve the service life of the bridge.

[0014] 3) This utility model has good bridge deck drainage performance and long bridge service life, which is conducive to the promotion of rural road bridge construction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the expansion joint structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the expansion joint device of the present invention;

[0018] In the diagram: 1. Pier; 2. Cap beam; 3. Pad stone; 4. Stop block; 5. T-beam; 6. Longitudinal expansion joint; 7. Expansion joint device; 701. Rubber block; 702. Steel plate; 703. Chemical anchor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, a rural road bridge structure includes a pier 1, a cap beam 2, a pad stone 3, a bearing and a T-beam 5, wherein the bearing and the pad stone are a matching set and are a conventional arrangement, not shown in the figure.

[0021] Figure 1 The image shows one support pier of the bridge along the road direction. The other support piers are also set up, including 10 piers 1 and 4 cap beams 2. Among them, the cap beams 2 located on both sides of the road centerline have 3 piers at the bottom and 9 pad stones on the cap beams 2; the cap beams 2 located on both sides of the road have 2 piers at the bottom and 5 pad stones on the cap beams 2.

[0022] The top elevation of pier 1 decreases gradually from the center line of the road to both sides of the road to ensure drainage of the road surface and prevent water accumulation. Note that the elevations of the cap beam and the pad stone should correspond to those of the pier.

[0023] A wet joint is set between two adjacent T-beams 5 on the same cap beam 2. The wet joint is used to connect the T-beams on the same cap beam into a whole structure, thereby improving the load performance of the bridge deck.

[0024] Stoppers 4 are installed on both sides of the cap beam 2 to limit and block the T-beam 5, preventing the T-beam 5 from falling off the cap beam 2 as a whole.

[0025] like Figure 2 As shown, a longitudinal expansion joint 6 is provided between two adjacent T-beams 5 (between the carriageway and between the carriageway and the auxiliary lane) between adjacent cap beams 2. An expansion joint device 7 is provided at the location of the expansion joint 6 to accommodate the thermal expansion and contraction between the T-beams 5 and prevent the bridge deck from bulging and cracking.

[0026] like Figure 3 As shown, the expansion joint device 7 includes a rubber block 701, a steel plate 702, and a chemical anchor 703. The rubber block 701 is erected between two adjacent T-beams 5. The steel plate 702 covers the outside of the rubber block 701 (top surface and all sides). The chemical anchor 703 is located at one end of the steel plate 702 and passes through the steel plate 702 and the rubber block 701 in sequence to be fixed to one of the T-beams 5. The other end of the steel plate 702 is free and does not require the chemical anchor 703 for fixation.

[0027] Finally, a bridge deck is constructed on the top surface of T-beam 5. The bridge deck includes a leveling layer, a waterproof layer, and an asphalt layer. The leveling layer is made of 10cm thick C50 concrete; the asphalt layer is made of 10cm thick asphalt concrete; and the waterproof layer is coated with waterproof material.

[0028] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A rural highway bridge structure, characterized by, The utility model provides a bridge structure, including pier (1), bent cap (2), cushion stone (3), support and T type beam (5), a group of pier (1) vertical settings, and its top elevation decreases gradually from the middle to both sides position, bent cap (2) is erected on pier (1), and at least two adjacent piers (1) are provided with a bent cap (2), a group of cushion stone (3) are provided on bent cap (2), the support is set on cushion stone (3), and the support and cushion stone (3) position and quantity one to one correspond, both ends of T type beam (5) are erected on the support of adjacent two bent caps (2) respectively.

2. A highway bridge structure according to claim 1, wherein The longitudinal expansion joint (6) is arranged between the two adjacent T type beams (5) between the adjacent bent caps (2), and the expansion joint device (7) is arranged at the position of the longitudinal expansion joint (6).

3. A rural highway bridge structure according to claim 2, wherein The expansion joint device (7) comprises a rubber block (701), a steel plate (702) and a chemical anchor bolt (703), the rubber block (701) is arranged between the two adjacent T type beams (5), the steel plate (702) is arranged outside the rubber block (701), the chemical anchor bolt (703) is arranged at one end of the steel plate (702) and fixed on one of the T type beams (5) through the steel plate (702) and the rubber block (701) in sequence.

4. A rural highway bridge structure according to claim 2, wherein The size of the longitudinal expansion joint (6) is 15-20mm.

5. The rural highway bridge structure according to claim 1, wherein The stoppers (4) are arranged at both sides of the bent cap (2) respectively for limiting and blocking the T type beam (5).

6. A rural highway bridge structure as claimed in claim 1, wherein The leveling layer, the waterproof layer and the asphalt layer are arranged on the T type beam (5) in sequence from bottom to top.

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