真空堆载联合预压技术加固高速公路桥头软基试验研究

结合杭州湾跨海大桥南岸接线高速公路试验段工程，对真空堆载联合预压技术处理的试验断面进行了长达两年多的现场测试．经过对试验数据的整理分析、加固前后原位测试以及土工试验数据的对比研究后认为，真空堆载联合预压技术处理深厚软土地基是成功的．

Experimental study of vacuum surcharge preloading for improving soft base treatment of expressway bridge head

For the foundation treatment of the experimental segment of the south shore expressway of the Hangzhou Bay Cross Sea Bridge, the in situ monitoring has been conducted for more than two years by use of vacuumsurcharge preloading. Through analyzing and comparing the experimental data and the in situ measured data before and after improvement, it can be seen that the vacuum surcharge preloading technique is successful in dealing with the deep soft base.