岩土力学2009，Vol.30Issue(11)：3297-3301,5.
连云港软黏土的不排水强度试验研究
Research on undrained shear strength tests of soft Lianyungang clay
摘要
Abstract
Triaxial consolidation undrained shear tests were performed on both undisturbed and remolded samples of soft Lianyungang clay to investigate its undrained shear strength behavior. The test results indicated that the strength envelope of the undisturbed sample is composed by two straight lines separated by the triaxial consolidation yield stress. The strength envelopes of remolded samples, however, are straight lines through the origin. When the applied confining stress is less than the triaxial consolidation yield stress (I.e. Pre-yield stress state), undrained shear strength of undisturbed samples are larger than remolded samples due to the resistance of soil structure. While at post-yield state (the applied confining stress is larger than the triaxial consolidation yield stress), strength envelope of the undisturbed sample lies among the remolded samples with different initial water contents. This difference is found to be caused by the difference in initial water content. The changing in water content and strength with confining stress for undisturbed sample at post-yield state behave like as a remolded sample at given initial water content. The compression behavior of undisturbed sample at post-yield state or remolded samples of different initial water contents can be well normalized by the void index proposed by Burland.关键词
不扰动样/重塑样/不排水强度/初始含水率Key words
undisturbed samples/ remolded samples/ undrained shear strength/ initial water content分类
建筑与水利引用本文复制引用
殷杰,高玉峰,洪振舜..连云港软黏土的不排水强度试验研究[J].岩土力学,2009,30(11):3297-3301,5.基金项目
国家自然科学基金资助项目(No.50878050). （No.50878050）
