赵志峰;王玮;

• 1:南京林业大学土木工程学院

摘要(Abstract)：

砂质土坡对坡上条形基础的承载力存在不利影响，在设计基础时确定合理的临坡距离十分重要。建立了砂质土坡上条形基础的数值模型，通过与已有理论和模型试验的结果进行对比，验证了该数值模型计算的合理性。建立了不同坡角、不同相对距离、不同内摩擦角的模型，分析各因素对坡上基础承载力的影响。结果表明，坡角对基础承载力具有显著影响，当基础与坡顶距离一定时，坡角越大地基土的变形和破坏模式受到斜坡的影响越明显。引入承载力折减系数对不同模型进行比较分析，发现坡角、相对距离、基础宽度、内摩擦角等因素都对承载力折减系数存在影响，其中主要的影响因素是坡角和相对距离。给出了砂质土坡上条形基础临坡距离的取值建议。

关键词(KeyWords)： 砂质土坡;极限承载力;数值计算;影响因素;临坡距离

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（编号：51578292）

作者(Authors): 赵志峰;王玮;

DOI: 10.14188/j.1671-8844.2022-04-006

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