中砂和软黏土中桩顶竖向力对桩身水平承载力影响对比分析

来源 :湖南大学学报：自然科学版 | 被引量 : 0次 | 上传用户：owenming521

【摘要】

：

为探讨中砂和软黏土地基中桩顶既有竖向力对桩身水平承载力的不同影响规律,基于ABAQUS建立了单桩基础三维有限元分析模型,并结合已有载荷试验结果验证了模型的合理性.在此基

【作者】

：

邹新军鲁彭焜

【机构】

：

湖南大学土木工程学院,湖南大学建筑安全与节能教育部重点实验室

【出处】

：

湖南大学学报：自然科学版

【发表日期】

：

2018年11期

【关键词】

：

单桩基础中砂软黏土 V-H联合荷载承载力包络线 single pile foundations medium sand soft clay V-H com

【基金项目】

：

国家自然科学基金资助项目(51578231,51378197)

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论文部分内容阅读

为探讨中砂和软黏土地基中桩顶既有竖向力对桩身水平承载力的不同影响规律,基于ABAQUS建立了单桩基础三维有限元分析模型,并结合已有载荷试验结果验证了模型的合理性.在此基础上,采用Probe法分别获得均质稍密中砂和软黏土地基中2种不同桩身长径比(L/D)的单桩基础在保持不同桩顶既有竖向力(V)不变时,水平力(H)引起的桩身位移、桩身极限承载力及承载力包络线.结果表明:桩顶既有竖向力从桩身竖向极限承载力(Vult)0.2倍增加至0.8倍时,稍密中砂地基中的桩身水平极限承载力(Hult)提高13.6%~41.2

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中砂和软黏土中桩顶竖向力对桩身水平承载力影响对比分析

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