| CFG桩复合地基加固高速公路深厚软基若干问题研究 |
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| 引用本文： | 裴冬忙,唐彤芝,汪拾金.CFG桩复合地基加固高速公路深厚软基若干问题研究[J].探矿工程,2006,33(2):18-22. |
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| 作者姓名： | 裴冬忙 唐彤芝 汪拾金 |
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| 作者单位： | 浙江省岩土基础公司;南京水利科学研究院;浙江省岩土基础公司 |
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| 摘 要： | 对CFG桩复合地基加固高速公路深厚软基的若干问题进行了研究。考虑CFG桩沉管效应利用圆孔扩张理论，在规范和经验设计方法的基础上分别建立了按工后沉降控制和考虑成桩效应的复合地基桩间距设计计算新方法。同时对CFG桩沉管效应进行了计算分析，考虑成桩扰动推导了桩间土体模量的计算公式。
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| 关 键 词： | 高速公路 软基加固 CFG桩复合地基 复合土体模量 桩间距 成桩效应 圆孔扩张理论 |
| 收稿时间： | 2005/10/21 0:00:00 |
| 修稿时间： | 2005/10/21 0:00:00 |
Study on Some Problems Existing in CFG Pile Composite Ground Treating Deep Soil Foundation in Express Way Construction |
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| PEI Dong-mang,TANG Tong-zhi and WANG Shi-jin.Study on Some Problems Existing in CFG Pile Composite Ground Treating Deep Soil Foundation in Express Way Construction[J].Exploration Engineering(Drilling & Tunneling),2006,33(2):18-22. |
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| Authors: | PEI Dong-mang TANG Tong-zhi and WANG Shi-jin |
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| Institution: | Zhejiang Geotechnical Foundation Company;Nanjing Hydraulic Research Institute;Zhejiang Geotechnical Foundation Company |
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| Abstract: | The paper studies some problems existing in CFG pile composite ground treating deep soft foundation in express way construction. Two new methods to design and calculate composite ground pile distance are put forward according to post-construction settlement and effect of driving pile in CFG pile composite ground by use of the theory of cavity expansion base on criterion and experience. The effect of driving pile in CFG pile composite ground is calculated and analyzed. The paper has carried on mathematics to derive to the soil around the pile modular according to effort balance analysis and taking into account compaction effect. The radius of compaction zone is derived based on the theory of cavity expansion. |
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