Impact of Drained Heating and Cooling on Undrained Shear Strength of Normally Consolidated Clay
Impact of Drained Heating and Cooling on Undrained Shear Strength of Normally Consolidated Clay
复制标题
排水加热和冷却对常固结粘土不排水抗剪强度的影响
DOI：
10.1007/978-3-319-99670-7_31
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
J. McCartney
中科院分区：
文献类型：
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作者：
R. Samarakoon;I. Ghaaowd;J. McCartney
本研究主要探讨冷热循环对正常固结黏土试件不排水抗剪强度之影响。一个明显的增加不排水剪切强度观察排水加热到高温后剪切的标本，而进一步增加不排水剪切强度观察排水加热-冷却循环后剪切的标本。这是由于排水加热期间体积的永久性减少，然后是排水冷却期间体积的弹性减少。初始平均有效应力也被观察到发挥了重要作用，在不排水抗剪强度的增加的幅度，观察到的正常固结试样具有较低的平均有效应力的增加更大。
This study focuses on the effects of a heating-cooling cycle on the undrained shear strength of normally consolidated clay specimens. A clear increase in undrained shear strength was observed for specimens sheared after drained heating to an elevated temperature, while a further increase in undrained shear strength was observed for specimens sheared after a drained heating-cooling cycle. This is attributed to the permanent decrease in volume during drained heating followed by the elastic decrease in volume during drained cooling. The initial mean effective stress was also observed to play an important role in the magnitude of the increase in undrained shear strength, with greater increases observed for normally consolidated specimens with lower mean effective stresses.