超高层建筑的施工找平影响及竖向构件预留长度的计算  

Influence of leveling methods to super high-rise building and the calculation of storey reserved length

作　　者：顾磊[1,2] 李祥 

机构地区：[1]哈尔滨工业大学深圳研究生院,深圳518055 [2]中建钢构有限公司,深圳518054 [3]恒大地产集团,深圳518054

出　　处：《建筑结构》2017年第21期30-35,共6页Building Structure

基　　金：国家自然科学基金面上项目(51378148);深圳市基础研究(JCYJ20130329144615918)

摘　　要：采用SAP2000软件模拟一栋600m高的超高层钢-混凝土混合结构,考虑了三种不同的竖向施工标高找平方式,分别是逐层找平、三层找平一次、六层找平一次,得到了不同施工找平方式下结构的竖向变形、竖向变形差及水平构件内力随时间的变化规律。对比不同施工找平方式之间的关系并给出其影响规律,基于逐层施工找平过程进行理论推导,得出每层竖向构件预留长度的计算公式,计算出各层的预留长度,使计算期时得到的结构实际层高与设计层高一致,此种竖向构件预留长度的算法对超高层建筑的现场施工具有参考价值。A 600 m high super high-rise steel reinforced concrete structure was simulated by using SAP2000 software to research the effect of three construction leveling methods,including level finding storey-by-storey,level finding every three storeys and level finding every six storeys. Vertical deformation,vertical deformation difference and the variation of internal force of horizontal members with time were obtained under different construction leveling methods. By comparing the relationship of different leveling methods,the law of leveling method＇s impact was found. Formula to calculate the vertical member reserved length of each storey was derived based on the level finding storey-by-storey,so that the actual floor levels are the same with the design levels during the caculation period. The results provide a reference in construction of super high-rise buildings.

关 键 词：施工模拟 楼层找平 预留长度 超高层建筑 

分 类 号：TU973.2[建筑科学—结构工程]