两种方案处理饱和粉细砂地基试验的对比  

A Contrastive Study on Water-saturated Granular Ground Improvement with Two Methods

作　　者：周赛军[1] 应赣 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]江西省煤田地质局,江西南昌3300017

出　　处：《湖南科技大学学报（自然科学版）》2008年第3期58-62,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：湖南省教育厅资助项目(03C509)

摘　　要：在由吹填砂形成陆域的地基上兴建港口码头,必须对吹填砂地基进行大面积的处理,从设计使用、造价、工期等角度考虑,选择合理可靠的地基处理方法至关重要.采用振冲法和爆炸法2种处理方案加固饱和粉细砂地基,进行了现场试验,从孔隙水压力的增长和消散规律、地表沉降、静力触探3方面对加固处理效果进行了对比研究,试验结果表明振冲法处理地基效果容易得到保证并好于爆炸法处理的效果,爆炸法处理深层地基是可行的.图9,表2,参14.To build a dock on the reclamation by bumping filling, it is necessary to treat the water-saturated granular foundation. In order to meet the requirements of design, cost of construction, time limit for a project, it is vitally important to select a reasonable and reliable method for ground improvement. By experimenting in site to treat the water-saturatod granular foundation with vibroflotion compaction and explosion method, a contrastive study was made on the effect of consolidation of foundation from the following three aspects： increment and dissipation of pore-water pressure, ground surface settlement and contact sensor values. The result shows that the effect of vibroflotion compaction treatment is better and more reliable than explosion method, and it is promising to employ explosion method to treat deep foundation.

关 键 词：振冲法 爆炸法 饱和砂地基 孔隙水压力 

分 类 号：TU447[建筑科学—岩土工程]