预应力管桩桩土复合地基等效刚度参数数值分析  

Numerical Analysis of Equivalent Stiffness Parameters of Prestressed Pipe Pile Soil Composite Foundation

作　　者：娄中华 安钢 Lou Zhonghua;An Gang(China Construction Fifth Engineering Bureau Third Construction Co.,Ltd.,Changsha,Hunan)

机构地区：[1]中建五局第三建设有限公司,湖南长沙

出　　处：《科学技术创新》2024年第13期89-92,共4页Scientific and Technological Innovation

摘　　要：为了研究预应力管桩对淤泥质软土地基刚度参数的影响,本文以浙江联塑二期项目为依托,通过ABAQUS有限元软建模及C++编制计算程序,对预应力管桩在淤泥质软土中形成的复合地基刚度参数进行数值模拟分析,研究结果表明:①淤泥质桩土复合地基可以有效增加复合地基弹性模量,但非线性增长;②淤泥质桩土复合地基泊松比与桩径的大小成反比,当桩长超过淤泥层后,再增加桩长对复合地基泊松比影响无明显变化,当超过淤泥层时计算结果收敛,以上计算结果适用于沿海城市填海区,为其他沿海城市积累工程经验。In order to study the influence of prestressed pipe piles on the stiffness parameters of muddy soft soil foundation,this paper relies on the Zhejiang Liansu Phase II project,and uses ABAQUS finite element soft modeling and C++programming to numerically simulate and analyze the stiffness parameters of composite foundation formed by prestressed pipe piles in muddy soft soil.The research results show that:①Muddy pile soil composite foundation can effectively increase the elastic modulus of composite foundation,But non-linear growth;②The Poisson's ratio of silt pile soil composite foundation is inversely proportional to the size of the pile diameter.When the pile length exceeds the silt layer,increasing the pile length has no significant effect on the Poisson's ratio of the composite foundation.However,when it exceeds the silt layer,the calculation results converge.The above calculation results are applicable to coastal city reclamation areas and accumulate engineering experience for other coastal cities.

关 键 词：桩土复合地基 数值分析 刚度参数计算 ABAQUS C++ 

分 类 号：U416.1[交通运输工程—道路与铁道工程]