摘要
在软土地区修建高等级公路,工后沉降是亟需解决的问题之一。申苏浙皖高速公路浙江湖州段大部分为软基路段,采用真空-堆载联合预压法加固处理。为更好指导工程施工、研究加固机理,选取了试验路段,设计了试验方案,进行现场试验研究。通过现场试验,取得了加固区内的孔隙水压力、沉降、水平位移等资料,分析了它们的变化规律。结果表明:真空-堆载预压法是一种较好的提前消除软基沉降的地基处理方法,且路基稳定性不受填筑速度的影响。
In soft soil regions, settlement after work completion is the main problem to be solved urgently. Most section of the Shen-Su - Zhe - Wan highway in Huzhou, Zhejiang province is in soft soil areas and the vacuum -surcharge preloading method isapplied to strengthen the soil. For a better guiding the construction and studying the strengthening mechanism, a test section is selected and an experiment scheme is established for the field testing study. Through the test, the data of the pore water pressure, settlement and horizontal displacement etc are obtained and the variation law of them is analyzed. Test result shows that the vacuum- surcharge preloading method is an appropriate method in getting rid of the settlement in the construction period and the stability of the subgrade is not affected by the filling velocity.
出处
《地下空间与工程学报》
CSCD
2008年第5期810-814,共5页
Chinese Journal of Underground Space and Engineering
关键词
真空预压
堆载预压
软土
地基
vacuum preloading
surcharge preloading
soft soil
foundation
