Monotonic triaxial experiments to evaluate steady-state and liquefaction susceptibility of Babolsar sand  

作　　者：Yaser JAFARIAN Ali GHORBANI Siavash SALAMATPOOR Sina SALAMATPOOR 

机构地区：[1]International Institute of Earthquake Engineering and Seismology [2]Faculty of Engineering, University of Guilan [3]International Branch, University of Guilan

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2013年第10期739-750,共12页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project(No.AM-7/507-6723-545)supported by the International Institute of Earthquake Engineering and Seismology(IIEES),Iran

摘　　要：In this study,drained and undrained triaxial tests under isotropic and anisotropic consolidations were conducted on reconstituted samples of Babolsar sand,which underlies a densely populated,seismic region of the southern coast of the Caspian Sea,Mazandaran,Iran.It was demonstrated that the sand experienced all possible states of liquefiable soil: flow failure,limited flow,and dilation.The steady-state and flow liquefaction lines of this sand were presented and compared with previously tested sands.It is shown that the initial stress anisotropy can affect the potential of volume change and pore pressure generation.The steady-state line(SSL),however,remains identical for the isotropically and anisotropically consolidated specimens under drained and undrained conditions.The tests data were then analyzed in order to investigate the liquefaction susceptibility of this sand in terms of parameters such as the state parameter,relative state parameter index,and lateral earth pressure ratio at failure.In this study, drained and undrained triaxial tests under isotropic and anisotropic consolidations were conducted on reconstituted samples of Babolsar sand, which underlies a densely populated, seismic region of the southern coast of the Caspian Sea, Mazandaran, Iran. It was demonstrated that the sand experienced all possible states of liquefiable soil： flow failure, limited flow, and dilation. The steady-state and flow liquefaction lines of this sand were presented and compared with previously tested sands. It is shown that the initial stress anisotropy can affect the potential of volume change and pore pressure generation. The steady-state line （SSL）, however, remains identical for the isotropically and anisotropically consolidated specimens under drained and undrained conditions. The tests data were then analyzed in order to investigate the liquefaction susceptibility of this sand in terms of parameters such as the state parameter, relative state parameter index, and lateral earth pressure ratio at failure.

关 键 词：Triaxial test SAND STEADY-STATE Liquefaction susceptibility 

分 类 号：TU411[建筑科学—岩土工程]