带裙房的大底盘高层建筑桩筏基础沉降后浇带位置确定的浅析  

Studyon How to Select the Place to set a Post-Pouring Band in a Pile-raft Foundation of a Tower Buildings Built with a Big Podium Construction

作　　者：黄子贶 鄢磊 田相合 傅其峰 

机构地区：[1]中国联合工程公司,杭州310022

出　　处：《工程建设与设计》2010年第4期27-31,共5页Construction & Design for Engineering

摘　　要：在大底盘结构的桩筏基础中设置沉降后浇带既可以释放相当部分沉降差产生的不利影响,又可以满足建筑功能的要求,目前已被越来越多的工程应用。后浇带设置位置的确定受到诸多方面的限制,同时,位置的选择也影响其作用效果。文章对沉降后浇带的设置位置变化对筏板内力的影响作了一定程度上量化的计算,对两者之间相关性进行了研究。归纳了随位置变化,沉降后浇带作用的变化规律,提出了确定后浇带位置的建议,对今后工程应用提供了理论依据。In more and more Projects, Post-pouring bands are setted in a pile-raft foundation to separatate several tower buildings built on a big podium construction.This method is able to release the harmful effect caused by the difference in settlement in a considerable degree, meanwhile, it can meet the demands of using function.But ,the position of the post-pouring band was limited by many things, at the sametime, its effect is concerned with its position. In this paper, the effect of post-pouring bands and the change of internal force in pile-raft foundation were calculated ,the correlation coefficient between them were studied. The law of the varying effect was announced that the post-pouring band was setted at the different position. These laws provide theory basis for further using.

关 键 词：桩筏基础 后浇带 底盘 沉降 

分 类 号：TU473.1[建筑科学—结构工程]