霍克-布朗破坏准则
无量纲量
抗压强度
主应力
极限抗拉强度
地质强度指标
岩土工程
各向异性
地质学
材料科学
岩体分类
复合材料
机械
剪切(地质)
岩石学
物理
量子力学
出处
期刊:Journal of the Geotechnical Engineering Division
[American Society of Civil Engineers]
日期:1980-09-01
卷期号:106 (9): 1013-1035
被引量:1415
标识
DOI:10.1061/ajgeb6.0001029
摘要
An empirical strength criterion for rocks and rock masses is proposed. The nonlinear criterion includes the uniaxial compressive strength of the intact rock material and introduces two dimensionless parameters, m and s. The parameter m varies with rock type, the angle of interblock or interparticle friction and the degree of block or particle interlock. The parameter s varies from 1.0 for intact rock material to zero for granular aggregates and depends on the interparticle tensile strength and the degree of interlock within the rock mass. For anisotropic rock, both m and s vary with the orientations of the planes of weakness to the principal stress directions. Approximate relationships between rock type, rock mass quality indices, and the rock mass strength parameters m and s, are presented. These relationships have been found useful in preliminary design calculations for slopes and underground excavations in jointed rock.
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