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论文类型：期刊论文

发表时间：2012-12-01

发表刊物：Journal of Convergence Information Technology

收录刊物：EI、Scopus

卷号：7

期号：23

页面范围：1-8

ISSN号：19759320

摘要：The soil static and dynamic universal triaxial and torsional shear apparatus was employed to investigate the cyclic behavior of normally consolidated silty clays. The specimens of different void ratio are evaluated and compared based on the tests performed with different cyclic shear stress amplitudes and confining pressures. The critical cyclic stress ratio, rcr, was studied by normalized cyclic strain and pore water pressure. Comparing with development of strain and excess pore water pressure showed that rcr for silty clay existed, and the rcr of silty clay should be determined by the test result of strain. Thus, the rcr of silty clay is determined as cyclic stress ratio corresponding to the curve of strain versus cyclic number of including steady stage and failure stage. The rcr was clearly affected and decreased with the increasing void ratio. Further study showed that effect of void ratio is more evidently at failure stage. The rcr is suit to the confining pressure in the certain range. Based on the fitting analysis, the maximum confining pressure of corresponding to rcr is determined.