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| 接触面刚度对双排桩支护结构的影响分析 | |
| 引用本文： | 张洪彬,安关峰,刘添俊,莫海鸿,张国祥.接触面刚度对双排桩支护结构的影响分析[J].地下空间与工程学报,2012,8(2):301-306. |
| 作者姓名： | 张洪彬 安关峰 刘添俊 莫海鸿 张国祥 |
| 作者单位： | 1. 广州市市政集团有限公司市政工程技术研究院,广州510060;中南大学土木工程学院,长沙410075 2. 广州市市政集团有限公司市政工程技术研究院,广州,510060 3. 华南理工大学土木与交通学院,广州,510640 4. 中南大学土木工程学院,长沙,410075 |
| 摘 要： | 在深基坑支护结构的科学研究和实际工程设计计算中,有限元数值分析方法得到了越来越广泛的运用。目前一般通过设置接触面单元来模拟支护结构与土之间的相互作用。但在实际应用过程中,接触面参数的取值问题给模拟计算结果带来了许多不确定性,目前其取值仍是一个比较棘手的问题。利用Goodman接触面单元模拟了双排桩支护结构与周围土体之间的相互作用,通过改变Goodman接触面单元的初始法向刚度及初始切向刚度,分析了其变化对双排桩支护结构水平位移、桩顶竖直位移及周围土体沉降及坑底隆起量的影响,对双排桩支护基坑数值分析时接触面初始刚度系数的选取具有重要意义。 |
| 关 键 词： | Goodman 接触面单元 初始刚度 双排桩 |
Influence of Initial Contact Stiffness on Double-Row Piles of Foundation Pit |
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| Zhang Hongbin , An Guanfeng , Liu Tianjun , Mo Haihong , Zhang Guoxiang.Influence of Initial Contact Stiffness on Double-Row Piles of Foundation Pit[J].Chinese Journal of Underground Space and Engineering,2012,8(2):301-306. | |
| Authors: | Zhang Hongbin An Guanfeng Liu Tianjun Mo Haihong Zhang Guoxiang |
| Affiliation: | 1.Municipal Engineering and Technology Research Institute,Guangzhou Municipal Engineering Group,Guangzhou 510060, China;2.College of Civil and Transportation Engineering,South China University of Science and Technology, Guangzhou 510640,China;3.College of Civil Engineering,Central South University,Changsha 410075,China) |
| Abstract: | The finite element numerical analysis method has been widely applied in research and design on deep foundation pit.At present the interaction between supporting structure and soil foundation is generally simulated by interface element.The contact element is used to simulate the interaction between support structure and soil foundation.But during the practical application,it’s a critical issue about how to confirm the value of interaction parameter,because different value of interaction parameter can lead to uncertainty about calculation result.The Goodman element is used in this paper to simulate the interaction between support structure and soil foundation.The influence of initial contact stiffness on horizontal and vertical displacement of double-row piles,vertical settlement of ground surface and uplift in bottom of foundation pit is analyzed with finite element method.This provides a basis for the choice of contact stiffness coefficients on numerical calculation of double-row piles structure. |
| Keywords: | Goodman contact element initial stiffness double-row piles |
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