高等级公路行车速度快,对路面、桥梁的平整度有很高的要求。然而,许多高等级公路在交付使用后较短的时间内即发生了桥头跳车的病害。所谓“桥头跳车”就是指公路桥头处由于桥台和路堤的沉陷不一致,而导致桥头出现错台,致使高速行驶的车辆在这一区域内产生颠 High-speed road traffic speed, the road, the bridge has a high degree of flatness. However, many high-grade highways have been hit by bridgeheads shortly after their delivery. The so-called “bridgehead jumping” refers to the bridgehead at the bridge due to inconsistent subsidence of abutments and embankments, leading to the wrong place at the bridgehead, resulting in high-speed vehicles in the region produced Britain