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（1 華南理工大學(xué)土木與交通學(xué)院， 廣州 510640； 2 華南理工大學(xué)亞熱帶建筑科學(xué)國家重點(diǎn)實(shí)驗(yàn)室， 廣州 510640； 3 廣州市微望建筑科技有限公司， 廣州 510640）
［摘要］考慮不同的設(shè)防烈度、結(jié)構(gòu)高度、場地土類別，建立了18組RC框架結(jié)構(gòu)，分別按照小震、高規(guī)中震、廣東高規(guī)中震3種方法進(jìn)行設(shè)計(jì)，對比中震設(shè)計(jì)對框架結(jié)構(gòu)梁、柱截面尺寸和縱筋、箍筋配筋量的影響。以第一豎向構(gòu)件失效準(zhǔn)則作為結(jié)構(gòu)倒塌的判定依據(jù)，基于增量動力分析（IDA）方法對結(jié)構(gòu)進(jìn)行倒塌易損性分析。結(jié)果表明：1）中震設(shè)計(jì)與小震設(shè)計(jì)相比，梁、柱截面面積約增大20%，梁縱筋配筋量增大50%～160%，柱縱筋配筋量增大20%～100%，梁、柱箍筋幾乎沒有變化；2）采用3種設(shè)計(jì)方法的RC框架結(jié)構(gòu)均滿足“大震不倒”的設(shè)防要求；3）3層RC框架結(jié)構(gòu)抗倒塌能力：廣東高規(guī)中震設(shè)計(jì)>高規(guī)中震設(shè)計(jì)> 小震設(shè)計(jì)，隨著層數(shù)的增加和設(shè)防烈度的提高，結(jié)構(gòu)的抗倒塌能力逐漸變?yōu)椋盒≌鹪O(shè)計(jì)>廣東高規(guī)中震設(shè)計(jì)>高規(guī)中震設(shè)計(jì)。
［關(guān)鍵詞］RC框架結(jié)構(gòu)； 基于性能的抗震設(shè)計(jì)； 中震設(shè)計(jì)； 構(gòu)件變形
中圖分類號：TU375-4文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)10-0039-05
Comparison research on designs of RC frame structure based on component performance evaluation under fortification and frequent earthquakes
HAN Xiaolei1,2, LIU Ying1, HOU Zhaorong1, JI Jing1,2, LIN Zhe3
(1 School of Civil Engineering and Transportation， South China University of Technology， Guangzhou 510640， China;2 State Key Laboratory of Subtropical Building Science， South China University of Technology， Guangzhou 510640， China；3 Guangzhou Weiwang Architectural Technology Company, Guangzhou 510640， China)
Abstract:Considering different seismic fortification intensities, structural heights and site soil types, 18 groups of RC frame structures were established, and they were designed according to three methods under frequent earthquakes, fortification earthquakes according to national code JGJ 3—2010, and fortification earthquakes according to Guangdong code DBJ 15-92—2013, in order to study the impacts of seismic design on frame structural beams, column section size, the amount of longitudinal reinforcement and stirrup reinforcement under fortification earthquakes. Taking the failure criterion of the first vertical member as the basis for determining the collapse of the structure, the collapse vulnerability analysis of the structure was performed based on the incremental dynamic analysis (IDA) method. The results show that: 1) compared with the design under the frequent earthquake, the design under the fortification earthquake features about 20% increase of cross-sectional area of beams and columns, 50%～160% increase of longitudinal reinforcement of beams, 20%～100% increase of the longitudinal reinforcement of columns, and nearly no change in beams and column stirrups reinforcement; 2) RC frame structures adopting three design methods all meet the fortification requirements of “not collapse under the rare earthquake”; 3) the anti-collapse ability of structure is as follows: design under fortification earthquakes according to Guangdong code DBJ 15-92—2013 > design under fortification earthquakes according to national code JGJ 3—2010 > design under frequent earthquakes, and with the increase of the number of floors and the increase of seismic fortification intensity, the anti-collapse ability of structure gradually becomes: design under frequent earthquakes > design under fortification earthquakes according to Guangdong code DBJ 15-92—2013 > design under fortification earthquakes according to national code JGJ 3—2010.
Keywords:RC frame structure; performance-based seismic design; design under fortification earthquake; component deformation
*亞熱帶建筑科學(xué)國家重點(diǎn)實(shí)驗(yàn)室基金（2018ZC05），廣州市科技計(jì)劃基金（201904010221）。
作者簡介：韓小雷，博士，教授，博士生導(dǎo)師，Email:xlhan@scut.edu.cn
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