施工过程中 ,在紧邻桥头的路段极易发生路基下沉 ,导致路面与桥头断裂 ,形成“跳车”现象。这是公路建设中经常遇到的一个技术难题。如何解决这一技术难题呢 ?通过几年来的公路建设实践 ,我们摸索出了一套行之有效的处理方法。首先 ,填筑桥头路基时 ,路基应与桥头保留适当距离 In the process of construction, subgrade subsidence easily occurs in the section adjacent to the bridgehead, resulting in the breakage of the road surface and the bridgehead, resulting in the phenomenon of “jumping vehicle”. This is a technical problem often encountered in highway construction. How to solve this technical problem? Through several years of highway construction practice, we worked out a set of effective approach. First of all, fill the bridgehead subgrade, the subgrade should keep the proper distance with the bridgehead