摘要
针对支护结构对高层建筑地基基础沉降变形分布特征的影响,利用有限元数值模拟手段,建立考虑排桩支护结构影响的复合地基基础的三维模型,以地基基础差异沉降为控制指标,以改变地基变形模量来描述地基支承刚度的空间变化,讨论排桩支护结构存在条件下,复合地基支承刚度空间变化对地基基础沉降等值线分布规律的影响.研究表明,排桩支护结构对地基基础沉降变形分布特征有明显影响,复合地基基础基于差异沉降控制的空间变刚度设计需考虑支护排桩的作用效应.研究成果对减少建筑物基础边缘部分桩、降低基础差异沉降,有效改善筏板和上部结构次应力具有一定的理论指导意义.
Row piles retaining structure will affect the settlement distribution of composite foundation for high-rise buildings.Based on this,by using finite element numerical simulation tools,a simple 3-D FEM model of the composite foundation considering the effects of row piles retaining structure is established.By using differential settlement as control indicator and the change of the foundation deformation modulus to express the changes of bearing stiffness,as well as considering the existence of row piles retai...
出处
《郑州大学学报（工学版）》
CAS
北大核心
2009年第4期35-38,共4页
Journal of Zhengzhou University（Engineering Science）
关键词
地基基础
沉降变形
排桩支护结构
数值模拟
设计选型
subgrade and foundation engineering
settlement deformation
row piles retaining structure
numerical simulation
design selection
