| 刚柔组合二元复合地基布桩对结构的影响分析 |
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| 引用本文： | 郑冰,邓安福,曾祥勇,梁莉.刚柔组合二元复合地基布桩对结构的影响分析[J].地下空间与工程学报,2010,6(5). |
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| 作者姓名： | 郑冰 邓安福 曾祥勇 梁莉 |
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| 作者单位： | 重庆大学土木工程学院;郑州大学土木工程学院;重庆房地产职业学院房地产建设系; |
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| 基金项目： | 重庆市科委科技攻关项目 |
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| 摘 要： | 刚柔组合二元复合地基将竖向增强体复合地基中的柔性桩、刚性桩综合用于加固软弱地基,具有良好的技术优势和经济效益。在考虑上部结构与筏基及二元复合地基三者共同作用的前提下,针对二元复合地基各种不同布桩方式对三者共同作用所产生的影响进行了分析。分析中,上部结构为一个十层的框架结构,筏基为平板式筏基,二元复合地基采用石灰柔性桩和CFG刚性桩两种桩型。在桩总数不变,两种桩数各占一半的前提下,布桩方式采用"内强外弱"、"外强内弱"、"中部强内外弱"、"中部弱内外强"四种。综合四种情况下的竖向增强体桩顶反力、筏基沉降、筏基内力分布、上部结构内力对比表明,各种布桩方式各有利弊,相对而言,"中部弱内外强"的组合方式既可以使筏基沉降减至较低,又能适当减小上部结构及筏基的弯矩值,是一种相对优化的布桩方式。
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| 关 键 词： | 共同作用 刚柔组合二元复合地基 筏形基础 上部结构 布桩分析 |
Analysis on Influence of Rigid-Soft Combined Two-Elements Composite Foundation Pile Disposal to Superstructure |
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| Zheng Bing,Deng Anfu,Zeng Xiangyong,Liang Li.Analysis on Influence of Rigid-Soft Combined Two-Elements Composite Foundation Pile Disposal to Superstructure[J].Chinese Journal of Underground Space and Engineering,2010,6(5). |
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| Authors: | Zheng Bing Deng Anfu Zeng Xiangyong Liang Li |
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| Affiliation: | Zheng Bing1,2,Deng Anfu1,Zeng Xiangyong1,Liang Li3 (1.College of Civil Engineering,Chongqing University,Chongqing 400045,China,2.College of Civil Engineering,Zhengzhou University,Zhengzhou 450002,3.Department of Real Estate Construction,Chongqing Real Estate College,Chongqing 401331,China) |
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| Abstract: | Rigid-soft combined two-elements composite foundation has the vertical enhanced scheme of soft and rigid piles to reinforce the soft foundation.This scheme has fine technical and economic advantages.Under the precondition of considering the interaction of superstructure and raft footing and two-element composite foundation,with different piles disposal schemes,the influences of two-elements composite foundation to the interaction are analyzed.In the analysis,the superstructure is a ten-story frame structure... |
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| Keywords: | interaction rigid-soft combined two-elements composite foundation raft footing superstructure pile disposal analysis |
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