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公路建设中为保证行车的舒适与安全。除对路面质量提出高要求外,桥头跳车是急待解决的问题。桥头跳车严重影响行车安全,由于车辆行驶速度快,桥头跳车容易引起驾驶失控,造成交通事故。桥头跳车目前是我国道路质量通病的一种,特别是近年来我国高等级公路的迅速发展,桥头跳车现象尤为普遍。桥头跳车不仅严重影响行车的速度、安全、舒适,同时对汽车产生危害,降低车辆的使用寿命,而且由于产生过大的冲击荷载,从而对桥涵结构造成危害,影响正常的工作性能,并且对桥涵与路面连接处造成频繁破坏。因此,解决的办法是选择易于压实而且压实后在自重应力和荷载作用下沉降变形小的材料作为回填材料,科学地确定最大干密度,合理检测压实度。以确保工程质量。综合分析和讨论桥头跳车问题,提出防治桥头跳车处理措施,对我国公路建设有着重大的理论和现实意义。
Road construction to ensure traffic safety and comfort. In addition to making high demands on the quality of pavement, the bridgehead jumping is an urgent problem to be solved. The bridgehead jumping seriously affects the driving safety. Due to the fast driving speed of the bridge, the jumping at the bridgehead can easily lead to uncontrollable driving and cause traffic accidents. Bridgehead jumping is one of the common problems in road quality in our country at present, especially the rapid development of our country’s high-grade highways in recent years. The phenomenon of bridge jumping at the bridgehead is particularly prevalent. The bridgehead jumping not only seriously affects the speed, safety and comfort of the driving, but also endangers the automobile and reduces the service life of the vehicle. Due to the excessive impact load, the bridge and culvert structure will be harmed and the normal working performance will be affected Bridge culverts and road junction caused frequent destruction. Therefore, the solution is to choose as a backfill material that is easy to compaction and compact after settlement under gravity stress and load settlement, scientifically determine the maximum dry density, reasonable detection of compaction. To ensure the quality of the project. Based on the comprehensive analysis and discussion of the problem of bridgehead jumping, the paper puts forward the measures to prevent bridgehead jumping and has important theoretical and practical significance for our country’s highway construction.