港珠澳大桥长短组合桩基础有限元分析及受力研究  

Numerical and Stress Analysis of Composite Foundation with Long and Short Piles for the Hong Kong-Zhuhai-Macao Bridge

作　　者：别业山 刘沐宇[2] 张强[1] 

机构地区：[1]中铁大桥勘测设计院集团有限公司,武汉430050 [2]武汉理工大学道路与桥梁结构工程湖北重点实验室,武汉430070

出　　处：《武汉理工大学学报》2014年第5期101-105,共5页Journal of Wuhan University of Technology

基　　金：高等学校博士学科点专项科研基金(博导类)(20110143110016);湖北省自然科学基金(2013CFA049)

摘　　要：由于"m"法计算桩基时未考虑桩侧土摩阻力,为研究桩侧土摩阻力对长短组合桩基础桩基轴力分布的影响,以港珠澳大桥浅水区非通航孔桥桩基础为例开展分析,采用Midas有限元软件建立模型进行计算分析,模型中采用多折线弹簧模拟桩侧土摩阻力。结果表明,桩侧土摩阻力对长短组合桩基础桩基轴力影响较大,计算方法对桩基设计及工程造价控制具有重要意义。The research analyzed axial force distribution of composite foundations with long and short piles which was influenced with pile lateral soil resistance based on the Hong Kong-Zhuhai-Macao Bridge.The finite element model of the bridge was established by Midas,and lateral friction which affected pile foundations was simulated by more line spring for lateral friction.Results showed that lateral friction had great influence on axial force of composite foundations with long and short piles.Finite element analysis should be done to analyze axial force of composite foundations when the pile lengths of pile foundations were different.This method can provide some reference for the design and construction of pile foundations.

关 键 词：港珠澳大桥 长短组合桩 M法 有限元 桩侧土摩阻力 

分 类 号：U443.1[建筑科学—桥梁与隧道工程]