摘要
针对多塔高层超限结构抗震验算计算量大的问题,提出了一种多塔结构等效为单塔结构的验算思路。通过多塔结构和单塔结构的振型周期和基底剪力的计算结果的比较,得到了等效单塔结构的地震响应偏差,从而在单塔结构的计算结果的基础上加上偏差以包络多塔结果,达到快速可靠地验算多塔结构的目的,同时保证了安全性。上海真如副中心的两栋超限结构的抗震验算的实例中采用了本文提出的方法,结果表明该工程的设计符合规范要求,达到预计的抗震目标。
To address the issue of large amount of calculation for aseismic design of multi-tower high-risestructure, an equivalent single tower method is suggested in this paper. Through comparing the periods ofthe vibration modes and the base shear between the single tower and multi-tower, the response deviationof the result is estimated. The estimated deviation is added to the response of the single tower to coverthe response of multi-tower, thus to ensure safety and reliability. The application of the two towers in theShanghai Zhenru sub-center shows that the proposed method is capable for multi-tower structures, andthat the design of the project meets the requirements of the code.
作者
沈汝伟
Shen Ruwei(Guizhou Institute of Technology,Guiyang Guizhou 550003,China)
出处
《科技通报》
北大核心
2016年第7期99-102,142,共5页
Bulletin of Science and Technology
基金
国家青年科学基金项目(编号:51508121)
关键词
近等效单塔结构
时程分析法
静力推覆法
抗震设计
equivalent single tower structure
history analysis method
pushover method
aseismic design
