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桥头跳车现象在高等级公路中危害很大,出现桥头跳车的原因有地基承载力不同两端沉降量出现高差、台背路堤的地基处理不彻底、施工质量控制不严、路面渗水等。针对这些成因,本文提出了设置沉降差过渡段、处理台背回填段地基、桥头通涵两端台背填筑、台背以上部位加固等到措施,从而切实达到防治桥头跳车的目的。
The phenomenon of jumping at the bridgehead is very harmful in high-grade highways. The reason for the jumping at the bridgehead is that there is a difference in settlement between the two ends of the bearing capacity of the bridgehead. The groundwork of the platform is not thoroughly treated, the construction quality is not strictly controlled, . In view of these causes, this paper puts forward the measures to set up the transitional section of settlement difference, deal with the foundation of the backfill section, the backfill at the both ends of the bridgehead culvert and the reinforcement above the back of the bridge, so as to achieve the purpose of prevention and control of bridgehead jumping.