摘要
从超固结土与正常固结土的应力关系开始,分析卸载对土的大小主应力的影响,得到考虑卸载影响和不考虑卸载影响2种情况下土的抗剪强度差值。从理论上推导卸载过程中某一深度固定点的土的抗剪强度变化规律即卸载强度指标,以及卸载深度一定时不同深度各点的土的抗剪强度变化规律。最后得到土的卸载抗剪强度指标的计算方法。
In consideration of stresses relation between over-consolidated soils and normal consolidated soils, the effect of unloading on major stresses was analyzed. Then the difference between loading and unloading shear strength was given. Evolution of shear strength of soils at different depths was also discussed, and the calculation procedure for unloading shear strength of soil was found finally.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2006年第5期606-610,共5页
Chinese Journal of Geotechnical Engineering
关键词
卸载
土的抗剪强度
超固结土
正常固结土
unloading
shear strength
over-consolidated soils
normally consolidated soils
