1前言随着经济的发展,公路建设突飞猛进,投入营运高等级公路越来越多,但从使用情况上看,桥头跳车这个较为普遍问题仍然出现在很多公路中,尤其在一些软土地基地方更为严重,给养护部门带来了很大困难。如京珠高速许昌段很多桥梁桥头部位都出现了不同程度的桥头跳车现象,不但影响车辆通行,造成车速降低、行车颠簸、车辆自身损坏及行车事故,而且车辆的跳跃对桥梁和路基都造成了冲击,加速了 1 Introduction With the economic development, highway construction by leaps and bounds, put into operation more and more highways, but from the use point of view, the more common problem of bridgehead jumping still appears in many highways, especially in some soft ground More serious, to the conservation department has brought great difficulties. Such as the Beijing-Zhuhai section of Xuchang Changqiao many bridgeheads have suffered varying degrees of bridge jumping phenomenon, not only affect the vehicle traffic, resulting in reduced speed, traffic jolting, vehicle damage and traffic accidents, and the vehicle jump on the bridge and roadbed are caused The impact, accelerated