砂土地震液化后大变形特性试验研究  

Study on the behavior of large ground displacement of sand due to seismic liquefaction

作　　者：刘汉龙[1] 周云东[1] 高玉峰[1] 

机构地区：[1]河海大学岩土工程研究所,江苏南京210098

出　　处：《岩土工程学报》2002年第2期142-146,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金资助项目 (5980 90 0 4 )

摘　　要：利用全自动多功能三轴仪进行了砂土液化后大变形试验 ,基于试验结果提出了一个描述砂土液化后应力应变关系的双曲线模型 ,并对模型参数进行了标定 ,通过与前人试验结果比较验证了模型的适用性。The laboratory tests on the post liquefaction deformation of sand are performed by a new vibration torsional triaxial apparatus, and a constitutive model on the post liquefaction behavior of sand is established with a hyperbolic model. The parameters of model are calibrated. It is found that the hyperbolic model can express the post liquefaction stress strain response very well by comparison to the previously published test results.

关 键 词：砂土 大变形 双曲线模型 地震液化 

分 类 号：TU435[建筑科学—岩土工程]