| 长短桩复合地基桩土应力比的力学计算方法 |
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| 引用本文： | 郭院成,李明宇.长短桩复合地基桩土应力比的力学计算方法[J].公路交通科技,2009,26(2). |
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| 作者姓名： | 郭院成 李明宇 |
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| 作者单位： | 1. 郑州大学,土木工程学院,河南,郑州,450002
2. 同济大学,地下建筑工程系,上,海,200092 |
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| 摘 要： | 通过分析柔性基础下长短桩复合地基中桩顶褥垫层内受力分布，建立了力学模型，理论推导了柔性基础下刚性长短桩复合地基桩土应力比的解析公式。并通过柔性基础下长短桩4桩现场静载荷试验测得的桩土应力比结果对公式进行了对比验证。结果表明本文所提出的桩土应力比理论计算公式具有较好的工程实用性。得出柔性基础下长短桩复合地基桩土应力比与上部荷栽和褥垫层厚度成正比，同桩径成反比的研究结论。
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| 关 键 词： | 道路工程 桩土应力比 力学分析 长短桩复合地基 |
Dynamical Calculation Method of Pile-soil Stress Ratio of Long-short-pile Composite Foundation |
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| GUO Yuancheng,LI Mingyu.Dynamical Calculation Method of Pile-soil Stress Ratio of Long-short-pile Composite Foundation[J].Journal of Highway and Transportation Research and Development,2009,26(2). |
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| Authors: | GUO Yuancheng LI Mingyu |
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| Institution: | 1.School of Civil Engineering;Zhengzhou University;Zhengzhou Henan 450002;China;2.Department of Geotechnical Engineering;Tongji University;Shanghai 200092;China |
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| Abstract: | By analyzing stress distribution in cushion at top of pile of long-short-pile composite foundation under flexible base,the mechanical model was established and the analytical formula of pile-soil stress ratio of rigid long-short-pile composite foundation under flexible base was derived.Result of the pile-soil stress ratio from mechanical calculation method and the result from the field four-pile static loading test of long-short-pile composite foundation under flexible base were compared.The result of compa... |
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| Keywords: | road engineering pile-soil stress ratio mechanical analysis long-short-pile composite foundation |
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