| PCC桩水平承载特性足尺模型试验与数值模拟 |
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| 引用本文： | 张建伟,刘汉龙,陈育民.PCC桩水平承载特性足尺模型试验与数值模拟[J].防灾减灾工程学报,2009,29(3). |
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| 作者姓名： | 张建伟 刘汉龙 陈育民 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室、河海大学岩土工程科学研究所,南京,210098 |
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| 基金项目： | 国家自然科学基金，江苏省333高层次人才培养工程基金 |
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| 摘 要： | 通过进行大型模型槽足尺模型试验,根据桩身变形和桩身弯矩的试验结果,分析了水平荷载作用下现浇混凝土大直径管桩(以下简称PCC桩)的水平承载特性和桩-土共同作用性状。采用大型通用有限元软件ABAQUS对PCC桩的水平承载特性进行了数值模拟,计算结果与试验结果符合得较好,并进一步探讨了PCC桩水平承载特性的主要影响因素。结果表明:表层土体的弹性模量对水平受力性状影响较大,表层土体的厚度对桩身水平位移也有较大影响,因此可以通过改良表层土体来控制桩身水平位移,以达到工程设计要求;土体强度参数对水平承载特性也有影响,尤其是内摩擦角和粘聚力较小时更为明显。
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| 关 键 词： | PCC桩 水平承载 足尺试验 有限元 |
Full-Scale Model Test and Numerical Modeling for Behavior of Cast-in-Place Concrete Large Diameter Pipe Pile under Lateral Load |
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| ZHANG Jian-wei,LIU Han-long,CHEN Yu-min.Full-Scale Model Test and Numerical Modeling for Behavior of Cast-in-Place Concrete Large Diameter Pipe Pile under Lateral Load[J].Journal of Disaster Prevent and Mitigation Eng,2009,29(3). |
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| Authors: | ZHANG Jian-wei LIU Han-long CHEN Yu-min |
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| Institution: | ZHANG Jian-wei,LIU Han-long,CHEN Yu-min(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Geotechnical Research Institute,Hohai University,Nanjing 210098,China) |
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| Abstract: | The behavior of cast-in-place concrete large diameter pipe pile(PCC pile) under lateral load and pile-soil interaction were analyzed according to the pile displacement and moment of a full-scale model test.The behavior of PCC pile under lateral load was also modeled numerically with ABAQUS,which was confirmed very well with the test result,and its main influences were also discussed.The result indicates: the behavior of the PCC pile under lateral load is influenced by the Young's modulus and thickness of th... |
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| Keywords: | PCC pile lateral load full-scale model test FEM |
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