高层建筑箱基下满堂摩擦群桩荷载分配的试验分析  

Experimental Research on the Load Distribution of Friction Pile Group under Box Foundation of Highrise Buildings

作　　者：何颐华[1] 金宝森[1] 韩义夫 王秀珍 雷光木 

机构地区：[1]中国建筑科学研究院 [2]湖北省建筑科学研究设计院 [3]湖北工业建筑设计院

出　　处：《建筑结构学报》1991年第4期52-61,共10页Journal of Building Structures

摘　　要：通过原体工程测试及模型试验证明,在桩的容许承载力范围之内高层建筑箱形基础下摩擦柱的柱顶荷载分布,沿房屋纵向桩的桩顶荷载曲线为抛物线形,当超过桩的极限荷载时,箱基下的沿房屋纵向桩的桩顶荷载分配由抛物线逐步过渡到锅底形。课题还获得了由容许荷载、极限荷载到破坏荷载全过程的桩顶荷载分配曲线。这为箱基下摩擦群桩的合理布置提供了理论依根。The results of the prototype building tests in field and model tests in laboratory prove that within the range of allowable bearing capacity of piles, the distribution curve of load at the top of friction piles under box foundation along the longitudinal direction of highrise buildind is paraboloidal in shape. When the load exceeds the ultimate bearing capacity of the piles the distribution curve of load at the top of piles under box foundation varies step by step from paraboloidal to the shape of a pot-bottom. The distribution curves obtained in this paper involve the full range of loading from the allowable to the ultimate and to the collapsing load ing, thus providing a theoretical basis for studying the arrangementof friction piles under box foundation.

关 键 词：箱形 基础 群桩 载荷 建筑物 高层 

分 类 号：TU473.11[建筑科学—结构工程]