高真空击密法加固青岛地区软土地基试验研究  

High Vacuum Densification Method for Soft Foundation Improvement in Qingdao Region

作　　者：杨登峰[1] 于广明[1] 赵鹏[1] 李杏[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《山东科技大学学报（自然科学版）》2011年第5期47-51,共5页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：山东省自然科学基金重点项目(Z2007F10);青岛市科技局计划项目(07-2-3-16-jch)

摘　　要：结合青岛高新技术产业开发区的软基加固处理实践,对高真空击密法加固饱和软土地基在本地区的加固效果进行了研究。通过对加固处理过程中土体的超静孔隙水压力变化,变形、承载能力变化等进行监测,并对大面积施工过程中各参数包括强夯的夯击能、有效加固深度、夯击间隔时间、夯击次数和遍数、真空降水的时间等进行优化分析,试验结果表明高真空击密法能充分发挥强夯和真空降水的优点,有效加固了土体。The experimental study has been conducted to verify the effectiveness of reinforcing the saturated soft foundation by high vacuum densification method based on the soft foundation consolidation and treatment practices of Qingdao high-tech industrial development zone. The changes of excess pore water pressure and soil deformation, ground bearing capacity have been monitored, analyzed and discussed in the soil strengthening process to optimize the parameters for construction in large area, including the tamping energy in dynamic compaction, the effective rein forcement depth,the times of tamping and the intervals, the time of vacuum drainage. The test results showed that the high vacuum densification method could give full play to the advantages of dynamic compaction and vacuum drainage.

关 键 词：软基处理 高真空击密法 施工参数 

分 类 号：TU477[建筑科学—结构工程]