摘要
应用简易振动台和叠层剪切变形模型箱,进行了循环荷载作用下碎石桩加固液化地基试验研究,试验分析了碎石桩的加固效应,并着重分析了碎石桩的排水效应.复合地基模型采用三角形及矩形两种方案加固细砂土液化地基,试验结果表明:无论是矩形加固方案还是三角形加固方案,碎石桩均有效地防止了地基液化,并且激振结束后,碎石桩加速了孔隙水压力的消散.
Based on the development of simple shaking table and laminar shear box, stone columns com- posite foundation shaking table tests are performed under cyclic loading. And, especially, the drainage effect of stone columns is analyzed. The test results show that both the rectangular reinforcement project and the triangular one can effectively prevent sand liquefaction, and the stone columns can accelerate the dissiDation of nore water pressure at the end of excitation.
出处
《北京交通大学学报》
EI
CAS
CSCD
北大核心
2008年第4期111-115,共5页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家自然科学基金资助项目(50278003)
关键词
地基
循环荷载
碎石桩
孔隙水压消散
foundations
cyclic loading
stone columns
composite foundation
pore water pressure dissipation
