岩-土-结构强度参数估算及其应用探讨

基金项目:

中国博士后基金资助项目(2001).

ESTIMATE AND APPLICATION OF STRENGTH PARAMETERS OF ROCK-SOIL-STRUCTURE

1.
School of Civiil Engineering and Mechanics, Shanghai Jiaotong University, Shanghai 200030:
2.
Faculty of Engineering, China Univesity of Geosciences, Wuhan 430074;
3.
Southcenter Institution of Reconnaissance and Design, Wuhan 430071;
4.
General Company of Zhonghedadi Engineering, Beijing 100083

摘要: 岩-土-结构的强度参数估算是桩基、基坑与有支挡结构斜坡数值模拟和稳定性计算不可缺少的工作之一。在变形协调条件下推导出求支挡结构(桩)的单轴抗拉和抗压强度公式,在二维应力和三维应力状态分别与莫尔一库仑斜直线和莫尔抛物线破坏准则组合成四种情况下,推导出求岩、土、支挡结构(桩)的粘聚力、内摩擦角及其单轴抗拉和抗压强度公式,最后进行误差分析。该研究结果具有重要的理论意义和工程应用价值。
- 岩-土-结构 /
- 强度参数 /
- 破坏淮则
Abstract: Estimate of strength parameters of rock-soil-structure is a necessary work of numerical simulation and sta-bility calculation of pile foundation, excavation pit and slope with the retaining structure. In the paper formulae calcu-lating uniaxial tensile and compressive strengths of the retaining structure(pile) are derived from coordination condition of deformation., and formulae calculating cohesion and internal friction angle of rock, soil and the re-taming structure(pile) are derived from four combination conditions of two-dimensional and three-dimensional stresses with failure criterions of Mohr-Coulomb' inclined line and Mohr's parabola, finally deviation is dis-cussed. The study result has the important theoretical significance and the practical value of engineering.
- Roc-soi-structure /
- Strength parameter /
- Failure criterion