Integral plate type small bridge and culvert combination applicable to soft soil foundations

Abstract

The invention discloses an integral plate type small bridge and culvert combination applicable to soft soil foundations. The integral plate type small bridge and culvert combination comprises an integral plate foundation. The integral plate foundation is made of integral reinforced concrete plates, and cut-off walls with depths equal to or larger than 1m are arranged at intersection water-face ends of bottom plates and a river channel; a bridge pier is fixedly combined with the integral plate foundation; bridge abutments are fixedly combined with the integral plate foundation; plate beams are mounted on the bridge pier and the bridge abutments; ear walls are fixedly combined with the integral plate foundation and the bridge abutments, and slopes along side slopes of the river channel are arranged at the bottoms of the ear walls; retaining walls are independently arranged at the rears of the ear walls; one end of each lapping plate is arranged on a back wall of the corresponding bridge abutment via anchor bars, and other portions of the lapping plates are arranged on road bases at the rears of the bridge abutments. The integral plate type small bridge and culvert combination has the advantages that problems of low bearing capacity and high constructional difficulty of existing soft soil foundations can be solved, creeping paths of the soft soil foundations at bridge heads towards a river bed can be blocked, bumping of the bridge heads due to creeping and settling can be improved to a great extent, and the main problem of server bumping of existing bridge heads due to the fact that existing commonly used expanded foundations are excessively unevenly settled and the rears of pile foundation platforms are continuously settled can be basically solved.

Description

technical field [0001] The invention belongs to the technical field of bridges and relates to a small whole-slab bridge culvert suitable for soft ground. Background technique [0002] The soft soil foundation is in a flow-plastic state, and has the characteristics of large water content, high compressibility, poor water permeability, and low mechanical strength. It is easy to creep and slide, and the soft soil at the bottom of the foundation is prone to large settlement and uneven settlement. It is extremely harmful. If it is not handled properly, it will cause instability of the foundation, affect the use of the bridge, and even make the bridge completely scrapped. Existing bridges on soft soil foundations have defects in their structural design, and their integrity is not good. After a long time, the subsidence of the foundation is likely to cause vehicle jumping at the bridge head, landslides in front of the platform, pile position movement, expansion and contraction The...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a whole-slab type small bridge and culvert suitable for soft soil foundation. Due to the shallow whole-slab foundation, it not only solves the problems of low bearing capacity of the soft foundation and difficult construction, but also blocks the flow of the soft foundation at the bridge head to the river bed. The way of directional creep, the situation of the bridge head jumping due to creep settlement has also been greatly improved, and the main problems of the bridge head serious jumping caused by the uneven settlement of the commonly used expanded foundation and the continuous subsidence behind the pile foundation have been basically solved.

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