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 With the rapid development of expressway, the jumping phenomenon at the bridgehead in highway construction has become a common disease of expressways, which has a serious impact on the stability and safety of driving. This is a difficult problem in the current construction of expressways in soft soil areas First, it is also an urgent issue to be solved in highway construction. The main reason that the bridge head produces the jump car is the difference of the settlement of the bridge head and the roadbed. It is related to the foundation conditions,