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不同抗震性能目標(biāo)下的超限結(jié)構(gòu)內(nèi)力設(shè)計值對比分析
張航，宋文晶，梁志遠，肖堅，王力
摘 要

 

(中國建筑標(biāo)準(zhǔn)設(shè)計研究院，北京100044)
 
[摘要]我國《建筑抗震設(shè)計規(guī)范》(GB 50011-2010)提出了基于性能的抗震設(shè)計思想，設(shè)計中對復(fù)雜高層建筑和超限工程也多提出中震設(shè)計性能目標(biāo)，以提高重要結(jié)構(gòu)的安全性。通過對不同性能目標(biāo)時高層結(jié)構(gòu)在小震與中震下的設(shè)計內(nèi)力的詳細對比分析，結(jié)果表明：對于框架柱，由于小震下的結(jié)構(gòu)內(nèi)力調(diào)整較大，當(dāng)性能目標(biāo)確定較低時，小震彈性設(shè)計內(nèi)力超過中震的內(nèi)力設(shè)計值。采用中震設(shè)計并未提高重要結(jié)構(gòu)的安全性。
[關(guān)鍵詞]抗震性能設(shè)計;超限高層;性能目標(biāo);設(shè)計內(nèi)力
中圖分類號：TU973      文獻標(biāo)識碼：A      文章編號：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
 
作者簡介：張航，碩士，工程師 ，Email：zhanghang0613@163.com。
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