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| 路堤下水泥土桩复合地基荷载传递规律研究 | |
| 引用本文： | 陈甦,魏琛宇,蒋玉军,姚俭文,陈国兴.路堤下水泥土桩复合地基荷载传递规律研究[J].公路交通科技,2010,27(2). |
| 作者姓名： | 陈甦 魏琛宇 蒋玉军 姚俭文 陈国兴 |
| 作者单位： | 1. 中国地震局,哈尔滨工程力学研究所,黑龙江,哈尔滨,150080;苏州大学,城市轨道交通学院,江苏,苏州,215021 2. 苏州市高速公路建设指挥部,江苏,苏州,215006 3. 苏州科技学院,土木工程系,江苏,苏州,215011 4. 南京工业大学,土木工程学院,江苏,南京,210009 |
| 基金项目： | 苏州市科技局项目资助(SZD0799) |
| 摘 要： | 考虑到路堤荷载下水泥土桩复合地基变形特性,假设了桩间土竖向变形模式,在此基础上,根据弹性力学基本原理,推导得到了水泥土桩复合地基桩身轴力与桩侧摩阻力的解析表达式。理论分析和有限元计算表明,路堤下复合地基桩身出现中性点,中性点以上产生负摩阻力;桩侧正、负摩阻力以及桩身轴力随桩体模量增加或土体模量减小而增加,随桩顶荷载增加而增加。理论计算结果与有限元计算结果比较一致。推导的桩身轴力与桩侧摩阻力解析表达式可为工程应用参考。 |
| 关 键 词： | 道路工程 路堤 荷载传递规律 理论分析 水泥土桩 复合地基 |
Study on Load Transfer Regularity of Soil-cement Pile Composite Foundation under Embankment |
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| CHEN Su,WEI Chenyu,JIANG Yujun,YAO Jianwen,CHEN Guoxing.Study on Load Transfer Regularity of Soil-cement Pile Composite Foundation under Embankment[J].Journal of Highway and Transportation Research and Development,2010,27(2). | |
| Authors: | CHEN Su WEI Chenyu JIANG Yujun YAO Jianwen CHEN Guoxing |
| Abstract: | In consideration of deformation characteristics of soil-cement pile composite foundation under embankment,based on the supposed vertical settlement mode of the soil between piles and the elastic mechanics principle,the analytical formulas of the vertical stress of the pile and the friction of the pile side were derived.Theoretical analysis and FEM calculation results indicate that(1) the neutral point of the pile in composite foundation under embankment is produced,the negative friction of the pile side is ... |
| Keywords: | road engineering embankment load transfer law theoretical analysis soil-cement pile composite foundation |
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