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桥头跳车是桥涵两端的路堤与桥涵本身不均匀沉降而导致该处路面纵断面线形发生突变,即台背附近形成台阶或陡坡,使车辆行驶至该处发生明显的颠簸现象,它不但影响了行车的速度、安全与舒适,而且也影响了桥梁的使用寿命和公路的社会效益。目前,桥头跳车已成为一种普遍的桥梁病害,不论从设计还是从施工、养护,解决桥头跳车问题已成为交通行业发展的需要。
The bridgehead jumping is caused by the uneven settlement of the embankment and the bridges and culverts at both ends of the bridge and culverts, resulting in a sudden change of the linear profile of the longitudinal section of the road surface, that is, a step or steep slope is formed near the back of the bridge, Driving speed, safety and comfort, but also affect the service life of the bridge and the road social benefits. At present, the bridgehead jumping has become a common bridge disease, no matter from the design or from construction, conservation, to solve the problem of bridge jumping has become the need of the transportation industry development.