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随着高速公路的迅速发展,在公路建设中,桥头出现的跳车现象,已成为高速公路的多发常见病害,严重影响行车的平稳性和安全性,是目前软土地区修筑高速公路的难题之一,也是公路修筑的一个急待解决的重要课题。桥头产生跳车的主要原因是桥头与路基的沉降差所致,它与地基条件、填筑材料、施工机械设备以及施工工艺等诸多因素有关。现结合工程实践,就如何控制好路基施工质量,防治桥头跳车问题谈一些体会。1.公路桥头跳车的起因分析
With the rapid development of expressway, the jumping phenomenon at the bridgehead has become a common disease in highways, which has a serious impact on the smoothness and safety of driving, which is a difficult problem in highway construction in soft soil area First, it is also an urgent issue to be solved in highway construction. The main cause of the bridgehead jumping is caused by the difference of settlement between the bridge head and the subgrade. It is related to the foundation conditions, filling materials, construction machinery and equipment, construction technology and many other factors. Now combined with engineering practice, on how to control the quality of subgrade construction, prevention and treatment of bridge jumping something to talk about some experience. 1. Cause Analysis of Highway Bridge Head Jumping