| 被动单桩受轴向荷载作用耦合效应的初步分析 |
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| 引用本文： | 梁发云,黄茂松. 被动单桩受轴向荷载作用耦合效应的初步分析[J]. 地下空间与工程学报, 2010, 6(1) |
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| 作者姓名： | 梁发云 黄茂松 |
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| 作者单位： | 同济大学地下建筑与工程系,上海200092;同济大学岩土及地下工程教育部重点实验室,上海200092 |
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| 基金项目： | 国家自然科学基金资助(50708078);;上海市教育委员会科研创新项目资助(10ZZ24);;国家杰出青年科学基金资助(50825803) |
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| 摘 要： | 桩基受到基坑开挖、地面堆载等引起的土体水平位移作用,导致桩身产生附加弯矩和位移,可能威胁桩基础的安全,这已成为工程界关注的一个重要问题。文章阐释了被动桩基的主要分析方法,分别基于Winkler地基模型以及非线性的p-y曲线法对土体侧移作用下的邻近桩基相互作用进行分析。并对桩顶受轴力作用的被动单桩进行了算例计算,初步分析了轴向荷载与土体侧移的耦合作用效应,计算结果表明,P-△效应的存在对既有桩基存在一定程度的不利影响。
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| 关 键 词： | 被动桩 Winkler地基模型 p-y曲线 P-△效应 |
Couple Effect of Axial Load and Lateral Soil Movement Acting on a Passive Pile |
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| Liang Fayun,Huang Maosong. Couple Effect of Axial Load and Lateral Soil Movement Acting on a Passive Pile[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(1) |
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| Authors: | Liang Fayun Huang Maosong |
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| Affiliation: | 1.Department of Geotechnical Engineering;Tongji University;Shanghai 200092 China;2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education;Shanghai 200092;China |
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| Abstract: | Due to lateral soil movement resulting from excavations or surcharge loadings,the bending moments and displacements will act on adjacent piles.The safety of the adjacent pile may be under threat.Therefore,the interaction of lateral soil movement and adjacent piles is becoming an important problem in practical engineering.The main methods to study behavior of passive piles are discussed and based on linear Winkler's model and nonlinear p-y method,the behavior of piles adjacent to lateral soil movement is ana... |
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