饱和砂土振冲加固的振动液化机理研究  

Study of Vibration Liquefaction Mechanism of Saturated Sandy Soil Vibroflotation Reinforcement

作　　者：王绍彪[1] 谢蒙[1] 

机构地区：[1]中水珠江规划勘测设计有限公司,广东广州510610

出　　处：《人民珠江》2010年第4期12-14,61,共4页Pearl River

摘　　要：地震剪应力理论对饱和砂土振冲加固的振动压密作用机理进行研究,根据砂土水平剪应变的大小,对振冲加固深度范围内砂土的液化状态来确定最佳振冲间距。在工程实践中,通过在饱和砂土地基现场振冲试验剪应变大小的监测分析,确定最佳振冲间距,与传统孔隙水压力监测等方法确定最佳振冲间距相比,更经济快捷、方便可行。The vibration compaction mechanism in the vibroflotation reinforcement of the saturated sandy soil based on the earthquake shearing stress theory was studied. Based on the horizontal shearing strain in the soil, the liquefaction of the sandy soil within the vibroflotation reinforcement depth was assessed to determine the best vibroflotation space. In Practice, the detection of the shearing strain in the saturated sandy soil foundation was conducted in the field to determine the best vibroflotation space. This practice was proved more effective and feasible than the traditional pore water pressure detection method in determining the best vibroflotation space.

关 键 词：地震剪应力 振冲加固 剪应变 振动液化 振冲间距 

分 类 号：TU435[建筑科学—岩土工程]