风荷载作用下核心筒对整体钢平台的影响分析.pdf

2015年4月下 施工技术 第44卷第8期 CONSTRUCTION TECHNOLOGY 21 D0I:10.7672/sgis2015080021 风荷载作用下核心筒对整体钢平台的影响分析* 龚剑1 2，赵传凯，崔维久 (1.同济大学土木工程学院，上海200092；2.上海建工集团股份有限公司，上海200080) [摘要]核心筒与整体钢平台之间的共同作用使得整体钢平台的计算分析变得复杂化.以随机振动理论为基础， 分析了脉动风荷载作用下核心筒对于整体钢平台风振力的影响.结果表明，当核心筒高度比较低时，核心筒由于 刚度很大，对于钢平台的风振力几乎没有影响；当核心筒高度较高时，核心筒的存在减小了钢平台顶部的风振力， 对整体钢平台是有利的.因此，整体钢平台的计算过程可以不考虑核心筒的影响. [关键词]高层建筑；整体钢平台；风荷载；核心筒；共同作用；影响 [中图分类号]TU311.3 [文献标识码]A [文章编号]1002-8498(2015)08-0021-04 Interaction of Core Tube on Integral Steel Platform System Under the Wind Load Gong Jian.2 Zhao Chuankai' Cui Weijiu' (1.School of Civil Engineering Tongji University Shanghai 200092 China: 2.Shanghai Construction Engineering Group Co. Lad. Shanghai 200080 China) Abstract:Coupling between core tube and the integral steel platform system makes the calculation and analysis of integral steel platform system bee plicated.Based on the random vibration theory this paper analyzed the influence of the core tube on integral steel platform system under fluctuating wind. The results show that the core tube has almost no impact on wind vibration force of the integral steel platform system because of its large rigidity when the height of the core tube is low.When the core tube is higher the core tube can reduce the wind-induced force of the integral steel platform system which is advantageous for the integral steel platform system.Therefore the calculation process of integral steel platform can not consider the impact of core tube. Key words:tall building...