Strain-rate-dependent stress-strain behavior of overconsolidated Hong Kong marine clay
Strain-rate-dependent stress-strain behavior of overconsolidated Hong Kong marine clay
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DOI：
10.1139/cgj-37-6-1272
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发表时间：
2000-12
影响因子：
3.6
通讯作者：
Jungao Zhu;Jian-hua Yin
中科院分区：
文献类型：
--
作者：
Jungao Zhu;Jian-hua Yin
对香港海相再固结饱和粘土进行了24个三轴固结不排水剪切试验，试验包括压缩和拉伸剪切两种状态。在四个不同的超固结比（OCR）和剪切在三个不同的轴向应变速率的标本。应变率的不排水抗剪强度，孔隙水压力，应力路径，割线杨氏模量的依赖性进行了研究。本文还研究了OCR对HKMC应力-应变-强度特性的影响。所有测试的结果都被呈现和解释。解释的结果与文献中的结果进行了比较。对于OCR从1到8变化的HKMC，应变率参数0.15的平均值对于压缩测试为5.5%，对于拉伸测试为8.4%。大多数解释的结果是结论性的，并与发表的结果一致，而有些结果是不确定的。一个新的参数，用于描述应变率依赖的不排水…
A total number of 24 consolidated undrained triaxial shear tests on reconsolidated saturated Hong Kong marine clay (HKMC) have been performed in both compression and extension shear states. The specimens were prepared in four different overconsolidation ratios (OCRs) and sheared at three different axial strain rates. The strain-rate dependency of undrained shear strength, pore-water pressure, stress path, and secant Young's modulus are investigated. The influence of OCR on the stressstrainstrength behavior of HKMC is also examined. The results of all tests are presented and interpreted. The interpreted results are compared with the results in the literature. For the HKMC with OCR varying from 1 to 8, the average value of the strain-rate parameter 0.15 is 5.5% for compression tests and 8.4% for extension tests. Most interpreted results are conclusive and consistent with the published results, whereas some results are not conclusive. A new parameter for describing the strain-rate dependency of undrained ...