摘要
简要介绍了残积土边坡滑动变形特点和地质分布特征,分析了残积土的强度特性。由残积土时隔8年的强度指标和三轴固结排水剪切试验结果,根据边坡残积土的沉积固结特征,确定了利用Janbu法分析现存边坡的稳定性所取用的残积土强度参数。该边坡残积土的应力—应变关系呈理想塑性,伴有体积减小的剪缩特征,由其应力—应变特性,雨季降雨入渗将会引起边坡局部的突然性滑动变形。周期性作用可能引起边坡失稳。
The slide characteristic and geologic distribution of residual soil slope are introduced, the strength character of residual soil is analyzed. According to the strength parameter after 8 years interval,triaxial consolidation draining shear test results, and the deposit consolidating character of residual soil , the strength parameter is confirmed for existing slope stability and analyzed with Janbu method. The stressstrain character of residual soil in slope shows ideal plastic behavior with volume reduction of shear shrinkage character. The partial abrupt slide displacement in certain slope area will occur during rainfall,and probably slope instability under such periodical effect will happen.
出处
《南京建筑工程学院学报》
2002年第4期13-19,共7页
Journal of Nanjing Architectural and Civil Engineering Institute(Natural Science)
基金
江苏省教育厅自然科学基金项目(01KJB410001)
关键词
边坡
残积土
强度参数
固结
排水剪切
应力-应变关系
剪缩
水库
residual soil
strength parameter
triaxial consolidation draining shear test
stress-strain character
volume reduction
