摘要
简述了岩-土-混凝土材料的破坏准则。在柔性桩复合地基、主动和(或)被动侧土体加固基坑、重力式挡墙边坡和滑坡等进行数值模拟工作中,岩-土-混凝土的强度参数估算是必不可少的环节。在二维应力和三维应力状态分别与莫尔-库仑斜直线和莫尔抛物线破坏准则组合成的4种情况下,推导出求岩、土、混凝土结构的粘聚力、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。
Failure criteria of rock-soil-concrete are briefly discussed. Estimation is made on the strength parameters of rock,soil and concrete,which is necessary for finite element simulation in flexible pile foundation, excavation whose active and/or passive soil may be reinforced,slope with gravity retaining wall and landslide. The formulae,which can be used to calculate uniaxial tensile strength,uniaxial compressive strength,cohesion and internal friction angle of rock-soil-concrete,are derived from four cases which may be combined respectively with the states of two-dimensional and three-dimensional stresses with failure criterions of Mohr-Coulomb抯 inclined line and Mohr抯 parabola. Finally the error analysis is discussed.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第5期770-776,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
中国博士后基金(B3277A)
国家自然科学基金(40372121)资助项目。
