| 扩顶CFG桩复合地基加固效果数值模拟研究 |
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| 引用本文： | 季毛伟,高永涛,成子桥,吴顺川,刘洋. 扩顶CFG桩复合地基加固效果数值模拟研究[J]. 工业建筑, 2010, 40(1): 73-77,115 |
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| 作者姓名： | 季毛伟 高永涛 成子桥 吴顺川 刘洋 |
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| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083;北京科技大学土木与环境工程学院,北京,100083;河南高速公路发展有限责任公司,郑州,450052 |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2009AA11Z105) |
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| 摘 要： | 扩顶CFG桩复合地基是在CFG桩复合地基基础上发展的一种地基处理方法,其借鉴桩-承台-土相互作用理论,充分利用扩顶荷载收集作用以及桩间土的承载和变形协调能力。以河南省某高速公路为工程背景,通过有限元数值方法对常规CFG桩和扩顶CFG桩复合地基进行模拟分析,讨论不同因素对扩顶CFG桩控沉效果的影响;分析桩帽下土体的竖向位移;研究桩身应力、桩帽下土体的应力等的变化规律,并结合现场监测结果比较分析,对扩顶CFG桩数值模拟给出若干结论。
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| 关 键 词： | 扩顶CFG桩 复合地基 数值模拟 监测数据 |
NUMERICAL SIMULATION ON THE REINFORCING EFFECT OF THE TOP-EXTEBDED CFG PILE COMPOSITE FOUNDATION |
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| Ji Maowei,Gao Yongtao,Cheng Ziqiao,Wu Shunchuan,Liu Yang. NUMERICAL SIMULATION ON THE REINFORCING EFFECT OF THE TOP-EXTEBDED CFG PILE COMPOSITE FOUNDATION[J]. Industrial Construction, 2010, 40(1): 73-77,115 |
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| Authors: | Ji Maowei Gao Yongtao Cheng Ziqiao Wu Shunchuan Liu Yang |
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| Affiliation: | 1.Civil and Environment Engineering School;Beijing University of Science and Technology;Beijing 100083;China;2.Henan Expressway Development Co.Ltd;Zhengzhou 450052;China |
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| Abstract: | The top-extended CFG pile composite foundation is a ground treatment technique based on CFG pile foundation.It can make full use of the load collecting function of top-extended piles,and the bearing capacity and the deformation compatibility of soil between piles,which takes advantage of the pile-platform-soil interaction.Taking a highway in Henan Province as the engineering background and study object.Common CFG pile and top-extended CFG-pile composite foundation were analyzed by finite element numerical m... |
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| Keywords: | top-extended CFG pile composite foundation numerical simulation monitoring data |
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