2015年10月下第44卷第20期
DO1:10.7672/sgjs2015200001
施工技术
CONSTRUCTION TECHNOLOGY
超高层框架-核心筒结构体系技术经济性研究
范重",马万航"2赵红'，王义华
（1.中国建筑设计研究院，北京100044；2．北京科技大学土木与环境工程学院，北京100083）
【摘要】为了考察锅筋混凝土框架-核心简结构对超高层建筑的适用性，针对6度、7度、8度设防，对建筑高度为 150~300m的超高层办公楼结构体系进行了较为系统的研究，分别对12个模型进行了非抗震工况组合与抗震工况组合计算分析。针对超高层钢筋混凝土框架-核心简结构体系的抗震设防特点，给出框架柱与剪力墙型钢设置的原则，研究了楼板、楼面架、框架柱及剪力墙用钢量和混凝土折算厚度的变化规律。为了保证结构材料用量统计的准确性，对各种工况进行包络设计。在对近年亲钢材和混凝土材料价格变动分析统计的基础上，操讨各类结构构件工程造价和结构单位面积工程造价的规律，并考虑建筑高度超过100m后人工降效与机械降效引起施工费用的增加。
【关键词】高层建筑；框架-核心筒；混凝土结构；折算厚度；工程造价
【中图分类号】TU973
【文献标识码】A
【文章编号】1002-8498（2015)20-0001-10
Research on the Structural and Economical Efficiency of Super
High-rise Frame-corewall Systems
Fan Zhong',Ma Wanhang'-,Zhao Hong',Wang Yihua
(1. China Architecture Design & Research Group, Bejing 100044,China; 2. School of Cisil and Ensironmental
Engineering, Uriversity of Science and Technology Beijing, Bejing 100083, China)
Abstract:In order to study the applicability of super high-rise frame-corewall structural systems, this paper performed a systematic research on the super high-rise office building with the height varying from 150m to 300m under the seismic precautionary intensity of 6 degree,7 degree and 8 degree. Considering non-seismic and seismic load cases, twelve analytical models were calculated. According to the seismic precautionary characters of super high-rise systems, a method for setting section steel within reinforced concrete framing columns and shear walls were proposed. The steel consumption features of floors, beams, framing columns and shear walls were studied, and so did the equivalent thickness of concrete. For ensuring statistical accuracy of the material consumption, envelope design were considered including different load cases. Based on statistical analysis of price changes of steel and concrete, this paper studied the changes of cost of components as well as the comprehensive cost per unit area, considering efficiency reduction of manpower and machinery which leads to construction cost increase when the building height is over 100m.
Key words: tall buildings; frame-corewall structure; reinforced concrete structure; equivalent thickness; engineering cost
0
引言
超高层建筑由于建筑面积大，施工周期长，建
造难度大，所需投资巨大。从超高层项目立项阶段开始，结构效能、材料用量以及工程造价始终受到
【作者简介】范
重，教授级高级工师，工学博士，E-mail：fanz@
cadg.c
【收稿日期】2015-08-20 万方数据
参建各方的高度关注。根据国内外工程统计，超高层建筑的结构造价占房屋建筑总造价的比例可达 1/3左右。
汪大绥、周建龙等[1-2]对影响超高层建筑结构造价的若干因素进行探讨，并对部分已建或在建的高度300m以上超高层建筑的结构用钢量进行统计分析，认为结构造价受多种因素影响，合理优化的结构设计是降低结构造价的有效途径。丁洁民、赵