| 柔性荷载下CFG桩复合地基沉降特性的数值模拟分析 |
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| 引用本文： | 谢理民.柔性荷载下CFG桩复合地基沉降特性的数值模拟分析[J].武汉理工大学学报(交通科学与工程版),2011(6). |
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| 作者姓名： | 谢理民 |
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| 作者单位： | 中铁第四勘察设计院集团有限公司杭州分院; |
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| 摘 要： | 根据甬台温客运专线具有代表性的断面,对影响客运专线铁路柔性基础下CFG复合地基变形的各种因素进行数值模拟分析.分析结果表明,桩身弹性模量小于3GPa时,桩身弹性模量对复合地基沉降影响较大,桩身弹性模量达到3GPa后,桩身弹性模量对复合地基沉降影响显著减小,当桩身弹性模量达到5GPa后,复合地基沉降基本不受桩身弹性模量影响;路基垫层弹性模量小于50MPa时,随着垫层弹性模量的增大,沉降量急剧减少,垫层弹性模量达到50MPa后,垫层弹性模量基本不对复合地基的沉降产生影响;下卧土层压缩模量对复合地基的沉降影响比较大.
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| 关 键 词： | 柔性荷载 CFG桩复合地基 路基沉降 有限元 |
Numerical Analysis on the Settlement of CFG Composite Foundation in Wuhan-Guangzhou Special Passenger Line |
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| Xie Liming.Numerical Analysis on the Settlement of CFG Composite Foundation in Wuhan-Guangzhou Special Passenger Line[J].journal of wuhan university of technology(transportation science&engineering),2011(6). |
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| Authors: | Xie Liming |
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| Institution: | Xie Liming (China Railway SiYuan Survey And Design Group Co.,LTd,Hangzhou Branch,Hangzhou 310017,China) |
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| Abstract: | Numerical simulation is applied to analyze the settlement characteristics of CFG composite foundation under flexible loads of the high-speed railway from YongTaiWen in a representative cross section.According to the calculated results,when the elastic modulus of pile shaft(Ep) is less than 3 GPa,the influence on the settlement of CFG composite foundation is great,when Ep is greater than 3 GPa,the influence on the settlement decreases remarkably,when Ep is greater than 5 GPa,the settlement of CFG composite f... |
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| Keywords: | flexible loads CFG composite foundation settlement of subgrade FEM |
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