摘要
基于地基极限承载力的理论公式,采用单因素敏感性分析方法,计算分析了土体抗剪强度指标变化对地基极限承载力的影响规律;分析表明,土体内聚力和内摩擦角对地基承载力特征值的敏感性影响规律不同,土体内摩擦角的变化对地基承载力特征值的影响敏感于内聚力的变化对地基承载力特征值的影响;基底的光滑程度不同,其抗剪强度指标对极限承载力的敏感性影响有较大差异。
Based on the single factor sensitivity analysis method,the influence regularities of the ultimate bearing capacity of subgrade,due to the index variation of the shear strength,are discussed.In the analysis,the theoretical formula of subgrade ultimate bearing capacity is adopted.The results show,the cohesive force and the angle of friction have different sensitive regulation to the bearing capacity,and the sensitive level due to the changes of the angle of friction is higher than those of the cohesive force.The different smooth level of the bottom of foundation has different influence on the sensitivity of the index of shear strength.
出处
《工业建筑》
CSCD
北大核心
2005年第z1期479-481,460,共4页
Industrial Construction
关键词
地基
抗剪强度指标
极限承载力
敏感性分析
subgrade index of shear strength ultimate bearing capacity sensitivity analyses
