土体中总应力为有效应力与孔隙水压力之和。其中,有效应力为粒间应力,只通过土颗粒接触点传递的应力,会使土粒彼此挤紧,从而引起土体变形。孔隙水传递的力称为孔隙水压力。
Curves of total stress and time, of cycle pore water pressure and time, of effective stress and time, of effective stress and axial strain are respectively studied.
研究了试样总应力、循环孔隙水压力、有效应力随时间的变化规律及试样有效应力与轴向应变的关系曲线。
参考来源 - 循环孔隙水压力作用下饱和砂土变形的试验研究·2,447,543篇论文数据,部分数据来源于NoteExpress
随初始含水量的增大,总应力指标始终小于相应的有效应力指标;
With the increase of initial moisture content, total stress indices are always smaller than corresponding effective stress indices.
经过分析,作者认为当采用总应力法计算时,原则上应采用卸载强度指标。
According to the analysis, the authors conclude that the unloading shear strength parameters should be used when applying total stress method.
此外,对于基坑开挖采用总应力法分析时,应按卸载总应力强度指标计算。
Furthermore, the unloading shear strength parameters should be applied when using total stress method to analyse excavation problems.
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