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公路桥梁在使用过程中,由于发生低净空水中桥梁出现基础下沉,基础承载力不够,防撞能力不足等现象,导致交通封闭,危险性极大,对社会造成巨大影响。由于是水下作业所以基础加固难度大。根据某高速公路的具体实例,进行两种不同的基础加固方法的比较,根据每种方法的优缺点,结合环境以及经济因素选择最优方案。本施工分为两个施工阶段分别为桥上施工和桥下施工,并对其施工方法和步骤进行详细的描述。
In the process of using the highway bridge, due to the occurrence of the base subsidence, the insufficient basic bearing capacity and the insufficient anti-collision capability of the bridges in the low clearance water, traffic closed and the danger is extremely great, causing great social impacts. Because it is underwater operations, so difficult to reinforce the foundation. According to a specific example of an expressway, two different methods of foundation reinforcement are compared, and the optimal scheme is selected according to the advantages and disadvantages of each method, combined with the environment and economic factors. The construction is divided into two construction stages: bridge construction and bridge construction, and detailed description of construction methods and procedures.