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不同抗震性能目标下的超限结构内力设计值对比分析
张航，宋文晶，梁志远，肖坚，王力
摘 要

 

(中国建筑标准设计研究院，北京100044)
 
[摘要]我国《建筑抗震设计规范》(GB 50011-2010)提出了基于性能的抗震设计思想，设计中对复杂高层建筑和超限工程也多提出中震设计性能目标，以提高重要结构的安全性。通过对不同性能目标时高层结构在小震与中震下的设计内力的详细对比分析，结果表明：对于框架柱，由于小震下的结构内力调整较大，当性能目标确定较低时，小震弹性设计内力超过中震的内力设计值。采用中震设计并未提高重要结构的安全性。
[关键词]抗震性能设计;超限高层;性能目标;设计内力
中图分类号：TU973      文献标识码：A      文章编号：1002-848X(2013)S1-0603-03
 
Comparative analysis of design internal force for super high-rise buildings under different performance objectives
  Zhang Hang, Song Wenjing, Liang Zhiyuan, Xiao Jian, Wang Li
(China Institute of Building Standard Design & Research, Beijing 100044, China)
 
Abstract: In code for seismic design of buildings of China and designs, perform-based seismic design methods are applied to improve the safety of super high-rise buildings. Comparative analysis of internal force under different seismic levels and performance objectives were done. The result indicates that because of the bigger adjustment coefficient of internal force for frame columns under small earthquake, the design values of internal force under small earthquake is even more than the values under medium earthquake with low performance objectives. Designed under medium earthquake could not improve the safety for super high-rise buildings.
Keywords: performance-based seismic design ; super high-rise buildings; performance objectives; design internal force
 
作者简介：张航，硕士，工程师 ，Email：zhanghang0613@163.com。
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