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 sout...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.展开更多
An experimental study is carried out to investigate the static liquefaction of sand. For this purpose, Babolsar sand with its liquefiable parameters such as soil properties and high seismic level of underground water ...An experimental study is carried out to investigate the static liquefaction of sand. For this purpose, Babolsar sand with its liquefiable parameters such as soil properties and high seismic level of underground water are investigated using static compression drained and un-drained tri-axial tests under isotropically and anisotropically conditions. Also, the data results of this sand are compared with those of the previous studies on soil case history. The study results indicate that Babolsar sand can experience the whole possible states of liquefaction soil, i.e. flow failure, limited and dilation behavior.展开更多
基金Project(No.AM-7/507-6723-545)supported by the International Institute of Earthquake Engineering and Seismology(IIEES),Iran
文摘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.
文摘An experimental study is carried out to investigate the static liquefaction of sand. For this purpose, Babolsar sand with its liquefiable parameters such as soil properties and high seismic level of underground water are investigated using static compression drained and un-drained tri-axial tests under isotropically and anisotropically conditions. Also, the data results of this sand are compared with those of the previous studies on soil case history. The study results indicate that Babolsar sand can experience the whole possible states of liquefaction soil, i.e. flow failure, limited and dilation behavior.
