Expanded foundation for bridge support

Abstract

The utility model discloses an enlarged foundation for a bridge support. The enlarged foundation comprises a steel plate, an X-shaped steel rib, a concrete rib and a telescopic steel pipe. The steel plate is arranged on the ground; the lower surface of the X-shaped steel rib is connected to the upper surface of the steel plate, and two staggered grooves are formed in the upper surface of the X-shaped steel rib; concrete is poured in the grooves to form concrete ribs; the lower ends of the telescopic steel pipes are detachably connected to the upper surfaces of the staggered positions of the grooves of the X-shaped steel ribs. Concrete is only poured in the grooves of the X-shaped steel ribs, steel plates are adopted as bearing plates, the purpose of weight reduction of the expanded foundation is achieved, meanwhile, the telescopic steel pipes are detachably connected with the X-shaped steel ribs, the telescopic steel pipes can be detached firstly in the pouring and transferring process, turnover and transportation are more convenient, repeated utilization of the expanded foundation is achieved, and the construction cost is reduced. And material waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place bridges, in particular to an enlarged foundation for bridge supports. Background Art

[0002] With the rapid development of engineering construction in my country, the application of cast-in-place beam-column brackets for bridges has become more and more common, and it is also one of the indispensable construction techniques in engineering construction. In the application of cast-in-place beam-column brackets, in areas with good geology, the form of expanding the foundation at the bottom is usually to expand a certain bottom area to the side so that the stress acting on the base is less than or equal to the allowable bearing capacity of the foundation soil. The foundation is usually a concrete expanded foundation as the bearing point, and during the erection of the cast-in-place beam bracket, the foundation is usually cast on site.

[0003] However, as a temporary structure, the support needs to be dismantled or used as another span of the bridge support after the construction is completed. Due to the heavy weight of the concrete foundation and the inconvenience of transportation, it can only be abandoned after the construction of a span of beams, resulting in a lot of waste. Utility Model Content

[0004] The utility model aims to provide an enlarged foundation for a bridge support, which is convenient for assembly and disassembly between components, convenient for turnover and transportation, realizes the reuse of the enlarged foundation, and reduces material waste.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] An enlarged foundation for a bridge support comprises a steel plate, an X-shaped steel rib, a concrete rib and a telescopic steel pipe; the steel plate is arranged on the ground; the lower surface of the X-shaped steel rib is connected to the upper surface of the steel plate, and two staggered grooves are arranged on the upper surface; concrete is poured in the grooves to form the concrete ribs; the lower end of the telescopic steel pipe is detachably connected to the upper surface of the intersection of the grooves of the X-shaped steel rib.

[0007] The X-shaped steel rib includes two steel ribs with U-shaped cross-sections, and the angle formed by the two steel ribs is 90°.

[0008] The X-shaped steel rib and the steel plate are connected by welding or bolting.

[0009] The lower end of the telescopic steel pipe is fixed to the X-shaped steel rib by bolt connection.

[0010] The lower end of the telescopic steel pipe is provided with a circle of flange protruding along its radial direction, and the flange is fixed on the X-shaped steel rib by bolt connection.

[0011] The telescopic steel pipe is provided with a fixed section.

[0012] After adopting the above technical scheme, the utility model only pours concrete in the groove of the X-shaped steel rib, and adopts the steel plate as the load-bearing plate, so as to achieve the purpose of expanding the foundation and reducing the weight. At the same time, the telescopic steel pipe and the X-shaped steel rib are detachably connected. The telescopic steel pipe can be removed first during transportation, which makes the turnover transportation more convenient, thereby realizing the reuse of the expanded foundation and reducing material waste. At the same time, concrete ribs are formed by pouring concrete in the groove of the X-shaped steel rib, which combines the advantages of high strength of the X-shaped steel rib and high rigidity of concrete, improves the bearing capacity of the overall structure, avoids the risk of deformation and sinking of the center of the steel plate due to the pressure transmitted downward by the telescopic steel pipe, and causes the four corners to warp, and meets the requirements of construction specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0014] Figure 2 It is a front view of a specific embodiment of the utility model;

[0015] Figure 3 A top view of a specific embodiment of the utility model;

[0016] Figure 4 It is a side view of a specific embodiment of the utility model;

[0017] Figure 5 It is an exploded view of a specific embodiment of the utility model;

[0018] Description of Figure Numbers:

[0019] 1----Steel plate; 2----X-shaped steel rib; 21---Groove;

[0020] 3----concrete rib; 4----telescopic steel pipe; 41---flange;

[0021] 42---Fixed section. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0023] The utility model is an enlarged foundation for a bridge support, comprising a steel plate 1, an X-shaped steel rib 2, a concrete rib 3 and a telescopic steel pipe 4;

[0024] The steel plate 1 is set on the ground as a load-bearing plate;

[0025] The lower surface of the X-shaped steel rib 2 is connected to the upper surface of the steel plate 1, and two staggered grooves 21 are provided on the upper surface;

[0026] Concrete is poured into the groove 21 to form a concrete rib 3;

[0027] The lower end of the telescopic steel pipe 4 is detachably connected to the upper surface of the intersection of the grooves 21 of the X-shaped steel rib 2.

[0028] refer to Figures 1 to 5 Shown is a specific embodiment of the utility model.

[0029] The length, width and height of the steel plate 1 are set according to the on-site construction requirements to meet the load-bearing requirements and reduce the stress acting on the base.

[0030] The X-shaped steel rib 2 includes two steel ribs with U-shaped cross-sections, and the angle formed by the two steel ribs is 90°, which can ensure the maximum bearing capacity of the X-shaped steel rib 2 on the telescopic steel tube 4.

[0031] The X-shaped steel rib 2 and the steel plate 1 are connected by welding or bolting. The former can improve the connection strength between the X-shaped steel rib 2 and the steel plate 1, and the latter is convenient for disassembly of the two. During transportation, they can be transported separately, which is more convenient.

[0032] The lower end of the telescopic steel pipe 4 is fixed to the X-shaped steel rib 2 by bolt connection.

[0033] Furthermore, the lower end of the telescopic steel tube 4 is provided with a flange 41 protruding in the radial direction thereof, and the flange 41 is fixed to the X-shaped steel rib 2 by bolt connection, and the flange 41 can increase the contact surface between the telescopic steel tube 4 and the X-shaped steel rib 2 to reduce the stress of the telescopic steel tube 4 on the X-shaped steel rib 2. Alternatively, a disc having a diameter larger than that of the telescopic steel tube 4 can be directly welded to the lower end of the telescopic steel tube 4.

[0034] The telescopic steel pipe 4 is provided with a fixed section 42. During on-site construction, the telescopic length of the telescopic steel pipe 4 can be adjusted as needed, and the fixed section can be used to achieve position limiting, so as to accurately achieve any length.

[0035] Through the above scheme, the utility model only pours concrete in the groove 21 of the X-shaped steel rib 2, and adopts the steel plate 1 as the load-bearing plate, so as to achieve the purpose of expanding the foundation and reducing the weight. At the same time, the telescopic steel pipe 4 and the X-shaped steel rib 2 are detachably connected. The telescopic steel pipe 4 can be removed first during transportation, which makes the turnover transportation more convenient, thereby realizing the reuse of the expanded foundation and reducing material waste. At the same time, by pouring concrete in the groove 21 of the X-shaped steel rib 2 to form the concrete rib 3, the high strength of the X-shaped steel rib 2 and the high rigidity of concrete are combined, the bearing capacity of the overall structure is improved, and the risk of the four corners curling up due to the pressure transmitted downward by the telescopic steel pipe 4 is avoided, thereby meeting the requirements of the construction specifications.

[0036] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An enlarged foundation for a bridge support, characterized in that: Including steel plates, X-shaped steel ribs, concrete ribs and telescopic steel pipes; The steel plate is arranged on the ground; The lower surface of the X-shaped steel rib is connected to the upper surface of the steel plate, and two staggered grooves are provided on the upper surface; Concrete is poured into the groove to form the concrete rib; The lower end of the telescopic steel pipe is detachably connected to the upper surface of the intersection of the grooves of the X-shaped steel rib.

2. The enlarged foundation for a bridge support according to claim 1, characterized in that: The X-shaped steel rib includes two steel ribs with U-shaped cross-sections, and the angle formed by the two steel ribs is 90°.

3. The enlarged foundation for a bridge support according to claim 1, characterized in that: The X-shaped steel rib and the steel plate are connected by welding or bolting.

4. The enlarged foundation for a bridge support according to claim 1, characterized in that: The lower end of the telescopic steel pipe is fixed to the X-shaped steel rib by bolt connection.

5. The enlarged foundation for a bridge support according to claim 1, characterized in that: The lower end of the telescopic steel pipe is provided with a circle of flange protruding along its radial direction, and the flange is fixed on the X-shaped steel rib by bolt connection.

6. The enlarged foundation for a bridge support according to claim 1, characterized in that: The telescopic steel pipe is provided with a fixed section.

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