岩-土-混凝土破坏准则及其强度参数估算  

FAILURE CRITERIA OF ROCK-SOIL-CONCRETE AND ESTIMATION OF THEIR STRENGTH PARAMETERS

作　　者：李云安[1] 葛修润[2] 糜崇蓉 张鸿昌 

机构地区：[1]中国地质大学工程学院,武汉430074 [2]上海交通大学建筑工程与力学学院,上海200030 [3]北京中核大地工程总公司,北京100083 [4]武汉中南勘察设计研究院,武汉430071

出　　处：《岩石力学与工程学报》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。

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.

关 键 词：岩-土-混凝土 柔性桩 复合地基 数值模拟 混凝土结构 

分 类 号：TU473.11[建筑科学—结构工程] TU451[建筑科学—土工工程]