随着高速公路的发展，以及高速路程的延长，人们在公路行驶上对舒适度要求也随之升高，桥头跳车现象是公路路桥上的普遍问题，影响了行车过程中的舒适性，并给行车的安全性带来隐患。产生此现象的主要原因是公路桥过渡段的差异沉降，而差异沉降的产生大多数是因为地基出现沉降现象导致的，在处理此现象的过程中，也不得不面对地基处理等问题。由于公路已经运营过了一段时间，地基绝大多数已经固结，所以针对地基进行施工费时费力，很少采取此种处理方法。但是地基的地质如果是软土等不良地基，并且施工后没完成沉降，那就必须采取对地基处理的方案。%With the development of the expressway, and the extension of the high-speed road, people also set higher requirements on comfort when driving on expressway. Vehicle dumpping phenomenon is a common problem on the highway bridge, which affects the driving comfort, and brings safety risk of driving. The principal cause of this phenomenon is the differential settlement road bridge transition section, and the main cause of differential settlement is foundation settlement, so foundation treatment is necessary in dealing with this phenomenon. Because the road has been operating for a period of time, the foundation has been solidified, so foundation construction is hard and labor consuming. But if the foundation is soft soil and has been completely settled after the construction, foundation treatment scheme is a must.
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