高层建筑地下室补偿基础设计研究  

Research on compensated foundation design of tall building basement

作　　者：胡德华[1] 刘向东 

机构地区：[1]武汉工程大学环境与城市建设学院,湖北武汉430074 [2]武汉市民用建筑设计研究院,湖北武汉430014

出　　处：《武汉工程大学学报》2010年第11期42-45,共4页Journal of Wuhan Institute of Technology

摘　　要：高层建筑地下室桩筏基础设计,往往忽略桩筏底板桩间土分担上部荷载的作用,由桩承担全部的上部荷载.实际上在高层建筑巨大的竖向荷载作用下,地下室外墙与桩身将产生压缩变形与沉降,使桩间土的承载力、地下室对地基的卸荷补偿作用逐渐发挥出来.考虑地下室的卸荷补偿作用进行桩基设计时,可大大节省布桩数量;另外由于最小配筋率的限制,无端地增加基础底板厚度时,混凝土的收缩因素对钢材用量的减少并不显著.Tall building basement piled raft foundation design often overlooked soil between piles to share the role of the upper load.In fact,under the action of tall building huge load,the basement wall and the piles will have a compression deformation and settlement,so that the bearing capacity of soil between piles and compensation for the role of the basement foundation gradually rise.Considering the role of unloading compensation to the basement for pile foundation design will reduce the number of piles,as the minimum reinforcement ratio limits and unwarranted increase in foundation slab thickness,concrete shrinkage factors on the reduction of steel consumption is not remarkable.

关 键 词：地下室 桩筏基础 桩间土 补偿作用 

分 类 号：TU473[建筑科学—结构工程]