- 摘 要
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(1 華南理工大學(xué)土木工程系 廣州 510640；2 華南理工大學(xué)建筑設(shè)計研究院 廣州 510640)
【提要】 當前國際上的主要建筑抗震設(shè)計規(guī)范的設(shè)防目標基本可以分為功能設(shè)計和安全設(shè)計，采用結(jié)構(gòu)的最大層間位移角確定抗震設(shè)防目標。比較各主要規(guī)范可以發(fā)現(xiàn)，我國的結(jié)構(gòu)抗震變形驗算標準偏低，特別是自振周期較短和延性較小的結(jié)構(gòu)，我國規(guī)范的構(gòu)件抗震承載力計算結(jié)果偏小，結(jié)構(gòu)的抗震設(shè)計安全度水準偏低。修編后的抗震規(guī)范對抗震安全度的提高幅度不大。
【關(guān)鍵詞】 鋼筋混凝土 框架 抗震設(shè)計 安全度 抗震規(guī)范
Comparison of Seismic Safety Degree for RC Frame Structures Between Domestic and Abroad Seismic Design Codes/Cai Jian1,Zhou Jing1,Fang Xiaodan2(1 Civil Engineering Department,South China University of Technology,Guangzhou 510640,China; 2 Architecture Design & Research Institute,South China University of Technology,Guangzhou 510640,China)
Abstract:The seismic fortification target of the main design codes in the world can be expressed by function design and safety design.The maximum interstory displacement is adopted as the seismic fortification target.Based on the comparison of several codes, it shows that the deformation checking calculation standard of the Chinese seismic design code is a little low, especially for the structures with short nature vibration period and small ductility.The comparison of calculation methods of earthquake shear force and example analysis reveals that the bearing capacity calculated by the Chinese code is small, and the seismic design safety degree of structural member is low.The safety degree increases little in the new code.
Keywords:RC structure;frame structure;seismic design;safety degree;design code
