文章摘要
余旭,吴瑶.CFG桩复合地基力学性能的有限元分析[J].安徽建筑大学学报,2014,22(2):62-65
CFG桩复合地基力学性能的有限元分析
The finite element analysis of the mechanical properties of CFG pile composite foundation
  
DOI:10.11921/j.issn.2095-8382.20140214
中文关键词: CFG桩复合地基  数值分析  桩土荷载分担比  优化设计
英文关键词: CFG pile composite foundation  numerical analysis  load sharing ratio of pile and soil  optimization design.
基金项目:
作者单位
余旭 安徽建筑大学 土木工程学院安徽 合肥 230022 
吴瑶 安徽建筑大学 土木工程学院安徽 合肥 230022 
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中文摘要:
      CFG桩复合地基为高粘结强度桩基形成的复合地基,随着CFG桩复合地基设计理论研究的不断成熟,该基础形式在全国范围内已经广泛应用。本文以合肥地区地质条件为基础,采用有限元分析软件ABAQUS对某工程的CFG桩复合地基的筏板—桩—土模型进行数值模拟计算,研究了实际工程中基础沉降、桩土应力和沉降变化,得出以下结论:(1)本文通过数值分析数据证实了软件模拟的合理性并说明了褥垫层在CFG桩复合地基中发挥的作用;(2)通过数值分析中得到的桩土荷载分担比值计算出单桩承载力的利用率为74%,在此基础上提出优化设计方法。
英文摘要:
      CFG pile composite foundation is composite foundation with high bond strength pile foundation. With the development of the theoretical research design on CFG pile composite foundation, the foundation form has been widely used throughout the country. In this paper, according to the geological conditions in HeFei, use the finite element analysis software ABAQUS to carry on the numerical simulation for the raft - pile - soil model about some engineering CFG pile composite foundation. Foundation settlement, the change of the stress and settlement of CFG piles and soil is studied in practical engineering. It draws the conclusion: (1) In this paper, according to the numerical analysis data, it confirms the rationality of the simulation software and illustrates the mattress layer in the role of the CFG pile composite foundation. (2) According to the load sharing ratio of pile and soil from the numerical analysis, calculated that utilization rate of the bearing capacity of a single pile was 74%.The optimization design method is put forward for the reason.
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