| 高速公路柔性地基桩土应力比影响因素的数值分析 |
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| 引用本文： | 熊茂东,周院芳,张鸿,刘优平.高速公路柔性地基桩土应力比影响因素的数值分析[J].公路,2011(10):8-11. |
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| 作者姓名： | 熊茂东 周院芳 张鸿 刘优平 |
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| 作者单位： | 1. 江西公路开发总公司 南昌市330038
2. 南昌工程学院土木与建筑工程学院 南昌市330099 |
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| 基金项目： | 江西省科技计划项目,项目编号2010BGB01302; 江西省交通运输厅重点科技项目,项目编号2010C00013、2010C00014 |
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| 摘 要： | 通过有限差分软件FLAC3D建立高速公路软基段数值模型,分别改变CFG桩的桩间距及褥垫层厚度,分析桩土应力比变化规律,结果表明:(1)随着垫层厚度增大,桩土应力比逐渐减小,可将褥垫层厚度设置为40 cm;(2)随着桩间距的增大,桩土应力比逐渐增大.得到的结果可为CFG桩加固该地区高速公路软基设计提供参考.
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| 关 键 词： | 桩土应力比 桩间距 褥垫层厚度 数值计算 |
Numerical Analysis for Influence Factors of Pile-Soil Stress Ratio in Highway Soft Foundation |
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| XIONG Mao-dong,ZHOU Yuan-fang,ZHANG Hong,LIU You-ping.Numerical Analysis for Influence Factors of Pile-Soil Stress Ratio in Highway Soft Foundation[J].Highway,2011(10):8-11. |
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| Authors: | XIONG Mao-dong ZHOU Yuan-fang ZHANG Hong LIU You-ping |
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| Institution: | XIONG Mao-dong1,ZHOU Yuan-fang1,ZHANG Hong2,LIU You-ping2(1 Jiangxi Highway Exploitation Parent Company,Nanchang 330038,China,2.Department of Civil Engineering,Nanchang Institute of Technology,Nanchang 330099,China) |
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| Abstract: | The numerical calculation software FLAC3D is taken to build the numerical calculation model for the highway with soft foundation,the spacing of CFG pile and cushion thickness are changed to study the discipline of pile-soil stress ratio,the calculation results show that,(1) with the increase of cushion thickness,the pile-soil stress ratio decreases gradually,the cushion thickness can be set to be 40 cm.(2) with increase of the spacing of CFG pile,the pile-soil stress ratio increases gradually.The obtained r... |
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| Keywords: | pile-soil stress ratio pile spacing cushion thickness numerical calculation |
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