考虑施工顺序及遮栏效应的静压群桩挤土位移场研究

罗战友; 龚晓南; 朱向荣

考虑施工顺序及遮栏效应的静压群桩挤土位移场研究 English Version

浙江科技学院岩土工程研究所；浙江大学岩土工程研究所；浙江大学宁波理工学院浙江杭州310023；浙江大学宁波理工学院；浙江宁波315100；浙江杭州310027；

基金项目: 国家自然科学基金资助项目(50708097);;中国博士后科学基金一等资助项目(20060400317);;浙江省教育厅基金(20061459);;浙江省高校青年教师资助计划项目(0202303005);;浙江省高校中青年学科带头人资助计划项目

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出版历程
- 发布日期: 2008-06-15

Soil displacements around jacked group piles based on construction sequence and compacting effects

1.Geotechnical Engineering Institute Zhejiang University of Science and Technology Hangzhou 310023 China 2.Ningbo Institute of Tech nology Zhejiang University Ningbo 315100 China 3.Geotechnical Engineering Institute Zhejiang University Hangzhou 310027 China

摘要

摘要: 基于应变路径法及源汇法理论,建立了已存在桩情况下单桩挤土位移场。在此基础上,结合拉格朗日插值函数推导出了考虑施工顺序及遮栏效应的群桩挤土位移场的解析解。该解较各桩的简单叠加更符合工程实际情况,而且能够简化为不考虑施工顺序的静压群桩挤土位移场的解答。利用得到的解析解对群桩产生的挤土位移场进行了分析,结果表明:与忽略施工顺序及遮栏效应的群桩挤土位移场相比,考虑施工顺序及遮栏效应的迎桩面挤土位移较大,而背桩面的挤土位移较小。
- 静压群桩 /
- 挤土位移 /
- 施工顺序 /
- 遮栏效应
Abstract: According to the strain path method and source-sink method,the closed-form analytical expressions of displacement fields due to the presence of adjacent piles were obtained.Based on the analytical expressions of singe pile and Lagrange interpolating function,the closed-form analytical expressions of displacement fields of soil around jacked group piles were derived.The solution taking into consideration construction sequence and compacting effects was in accordance with the practical engineering.And the solution could be reduced to simplified solution without consideration of construction sequence and compacting effects.Displacement fields of soil around group piles were analyzed by the solution.It was shown that the displacement of frontal surface was larger and that of dorsal surface was smaller with consideration of construction sequence and compacting effects.
- jacked group pile /
- compacting displacement /
- construction sequence /
- compacting effect