袖阀灌浆在312国道桥头跳车处理中的应用

Application of Pocket Valve Grouting in Bridge-head Bumping Treatment in No.312 National Highway

桥头跳车是公路常见的病害,如何减轻或消除桥头跳车成为公路建设中亟待解决的问题。文章结合312国道沪宁段扩建工程,提出了用袖阀灌浆方法处理桥头路基补强来解决桥头跳车,从而为解决及防治桥头跳车问题提供了有益的参考。

Bumping at bridge-head is the main common faults of highway,and how to reduce or eliminate its effects is an important promblem demanding prompt solution in highway construction. Combined with extension project in No.312national highway Huning section,this paper puts forward pocket valve grouting strength bridge-head subgrade to settle bumping at bridge-head,the results could be taken as reference to settle or prevent bumping at bridge-head.