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Study on Sand Liquefaction Characteristics by MTS Dynamic Tri-Axial Test

JIN Jian-jun~(1,2),ZHANG Hong-ru~1 (1.School of Civil Engineering and Architecture,Beijing Jiaotong University, Beijing 100044,China;2.China State Construction International Co.,Beijing 100026,China)  
The development rule of dynamic pore water pressure during sand liquefaction process is studied based on the MTS dynamic tri-axial test,and the dynamic pore water pressure curve is obtained in anisotropic consolidation.Then,the sand liquefaction process is divided into four phases according to the different behavior of hysteresis loop,during which the development characteristics of axial strain are analyzed.The decay curves of dynamic elastic module and dynamic shear module are presented on the basis of the decay characteristics of dynamic module.Besides,the strength resisting liquefaction is studied.
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