| 基于土拱效应的支护桩间距确定方法 |
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| 引用本文： | 张主华,陈秋南,王建东,李松.基于土拱效应的支护桩间距确定方法[J].湖南科技大学学报(自然科学版),2010,25(1). |
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| 作者姓名： | 张主华 陈秋南 王建东 李松 |
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| 作者单位： | 湖南科技大学,土木工程学院,湖南,湘潭411201 |
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| 基金项目： | 国家自然科学基金资助项目，湖南省自然科学基金资助项目，湖南省教育厅青年项目，湖南科技大学研究生创新基金资助项目 |
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| 摘 要： | 在分析桩间土体成拱效应的基础上,从均布荷载作用下抛物线土拱计算模型出发,利用合理拱轴线和起拱点处土体破坏面等几何特征,通过桩间土拱静力平衡条件与强度条件共同控制来确定桩间距,从而推导出支护桩的间距计算公式.公式表明:桩间距随着桩后土压力的增大而减小,却桩后土体粘聚力或内摩擦角的增大而增大.最后通过工程实例计算,得到了比较合理的结果,具有一定的工程参考价值.
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| 关 键 词： | 支护桩 土拱效应 桩间距 拱脚 |
Discussion on determination of spacing between retaining piles based on the soil arching effect |
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| ZHANG Zhu-hua,CHEN Qiu-nan,WANG Jian-dong,LI Song.Discussion on determination of spacing between retaining piles based on the soil arching effect[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2010,25(1). |
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| Authors: | ZHANG Zhu-hua CHEN Qiu-nan WANG Jian-dong LI Song |
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| Institution: | ZHANG Zhu-hua,CHEN Qiu-nan,WANG Jian-dong,LI Song (School of Civil Engineering,Hunan University of Science , Technology,Xiangtan 411201,China) |
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| Abstract: | Based on the analysis of the soil arching effect,starting from calculation model of parabolic soil arch under distributed loading,taking geometrical features of rational arch line and the failure surface of soil at the edge of arch foot to account,the static equilibrium equation and intensity condition of the soil arch were used to determine spacing between adjacent pile.Thus the rational calculation formula of spacing between adjacent piles was obtained.It is shown that the spacing is decreasing with incre... |
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| Keywords: | retaining piles soil arching effect spacing between adjacent pile arch foot |
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