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随着高等级公路的迅速发展,在公路建设中,桥头经常出现的跳车现象,已成为高等级公路的常见病害,严重影响行车的稳定性和安全性,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。笔者现结合工程实践,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。
With the rapid development of high-grade highways, the frequently occurring jumping phenomenon at the bridgehead has become a common disease of high-grade highways in highway construction, which seriously affects the stability and safety of traffic. It is the key to construct expressways in soft soil areas One of the problems. It is also an important issue to be solved urgently 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. The author is now combining engineering practice, on how to control the quality of subgrade construction, prevention and treatment of bridge jumping something to talk about some experience.