湿软路基残余变形控制技术及其工程应用

Analysis and application of treatments to diminish residual deformation of saturated clay subgrade

针对行车荷载作用下湿软路基残余变形形成的三个必要条件,提出了相应的残余变形控制途径,并采用已建立的残余变形计算方法及有限元程序,对增加基层厚度、抬高路基标高、设置盲沟系统、路基加筋和处治路基等5种控制技术进行了详细的效果分析和评价。各项控制技术在上海外环线二期工程中的应用效果表明,各种处治技术均能有效减小湿软路基的残余变形,具有显著的推广应用价值。

Based on the three formed qualifications of residual deformation of saturated clay subgrade under vehicle load, the corresponding approaches to diminish residual deformation are proposed, and then the effect of five kind of treatments are analyzed and evaluated particularly, including adding base thickness, enhancing subgrade height, fixing blind drainage, reinforcement and subgrade treatment The application in out outer ring road construction in shanghai demonstrated that these methods can diminish residual deformation effectively and have great significance for popularization.