排水固结预压法在郊环（A30）公路的应用及效果分析

何筱进¹ 杨志华² 徐宏跃¹

（上海市城市建设设计设计院¹  南环高速公路项目公司²）

摘要：本文通过对上海郊环（南环段）软土地基处理的现场原位观测资料的综合分析，探讨了排水固结法在高速公路软基处理中的应用效果，并总结了上海地区排水固结预压法处理软土路基的适用条件，最短预压工期，结束预压期的最佳沉降速率等一些规律性的经验。

关键词：软土地基 超载预压 真空预压 沉降监测

The Application of Preloading Consolidation Method in Suburb Circle Expressway (A30) in Shanghai

HE Xiao-jin  YANG Zhi-hua  XU Hong-yue

Abstract: Based on the in-situ measurement data of soft foundation treatment in the suburb circle expressway (South circle section) in Shanghai, this paper studied the application effect of the preloading consolidation method. Some rule experiences of this method in Shanghai are summarized, such as validity limit, the shortest preloading time, and the optimal settlement rate for preloading terminative time.