论文部分内容阅读
在60k Pa、120k Pa和200k Pa围压下,开展了宁波淤泥质黏土增p、等p及减p应力路径试验,结果表明:不同应力路径对土的应力—应变特性影响不大,增p、等p及减p应力路径试验中土体应力—应变曲线均呈弱软化型;在减p应力路径试验中出现剪胀现象,孔压一直为负;不同应力路径对土体强度的影响不同,60k Pa和120k Pa围压下等p和减p应力路径下试样强度变化不大,200k Pa围压下等p工况下的强度大于减p工况下的值。
Under the confining pressures of 60k Pa, 120k Pa and 200k Pa, the tests of p, p, and p stress path of muddy clay in Ningbo were carried out. The results show that the stress paths of different stress paths have little effect on the stress- , So that the stress-strain curves of soils are weakly softened during the p and p-stress path tests; dilatancy occurs in the path of reduced-p stress paths and the pore pressure is always negative; the influence of different stress paths on soil strength is different , 60k Pa and 120k Pa confining pressure and so on under the p and p stress path less change in the strength of the specimen, 200k Pa confining pressure under p and other conditions p greater than the value of p operating conditions.