高铁站场中不同类型桩基沉桩顺序研究
摘要:沪宁高铁某站场改建工程在咽喉区的狭窄区域同时出现PHC桩、CFG桩、水泥搅拌桩等多种地基处理方式,为克服PHC桩挤土效应对其他桩的可能影响,分别采用圆孔扩张理论、有限元分析方法及"等量桩"简化方法对PHC桩施工的单桩挤土效应、双桩挤土效应及群桩挤土效应进行了计算分析,获得不同条件下的挤土位移和挤土应力分布规律,进而对该区域基桩的合理施工顺序提出了建议。
Abstract:This thesis is focus on the soil compaction effect due to pile installation. There are PHC pile、CFG pile and MMP pile in one of the Shanghai-Nanjing high-speed railway yard. With theoretical simplified method and the Ansys finite analysis program to estimate the distribution and impact ranges on stress and displacement fields of single pile、vertical piles and pile groups. It is concluded that the influences of squeezing effect of PHC pile on surrounding pile is existence. And some reasonable suggestions on construction sequence are given. The studies of this thesis may have some practical effect in engineering practice.
中文标题：
高铁站场中不同类型桩基沉桩顺序研究
Studies on the Construction Sequence of Different Piles in High-speed Railway Yard
作者：
秦晓光,杨龙才,何太洪
Qin Xiaoguang,Yang Longcai,He Taihong
作者简介:秦晓光,1986年生,男,汉族,硕士研究生,河北石家庄人,研究方向为地基处理与地下工程。E-mail:qin_xg1986@163.com
通讯地址：
同济大学道路与交通工程教育部重点实验室, 上海 201804
KeyLaboratoryofRoadandTrafficEngineeringoftheMinistryofEducation,TongjiUniversity,Shanghai201804,China
中图分类号:U238
doi:10.3969/j.issn.1007-2993.2011.02.011
出版物：岩土工程技术
收稿日期:2011-03-01
关键词:桩基工程,沉桩顺序,圆孔扩张理论,有限元分析
Key words:pile foundation,construction sequence,cylindrical cavity expansion,finite element method
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