PRE-FAILURE INSTABILITY BEHAVIOR OF SAND IN STRAIN PATH TESTING UNDER PLANE-STRAIN CONDITIONS

SOILS AND FOUNDATIONS

D. WANATOWSKI²  J. CHU¹ 

[1] Nanyang Technological University;University of Nottingham

关键词: failure;    granular material;    laboratory test;    plane strain;    pore pressure;    (IGC: D6);   

DOI  :  10.3208/sandf.51.423

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(49)Cited-By(3)Experimental data are presented in this paper to study the instability behavior of sand in strain path testing under plane-strain conditions. K0 consolidated strain path tests were conducted on Changi sand using a plane-strain apparatus. The test results show that the occurrence of pre-failure instability under plane-strain conditions is affected by the void ratio and the strain increment ratio. This is consistent with previous findings established under axisymmetric conditions. However, instability behavior of medium dense sand in strain path-controlled plane-strain tests can also be affected by shear band formation. In this case, on-failure instability takes place and failure is likely caused by shear band development. This observation is different from that in triaxial strain path-controlled tests where shear bands do not normally occur.

【 授权许可】

Unknown