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(華東建筑設(shè)計(jì)研究院有限公司, 上海 200011)

摘要: 自抗震性能化設(shè)計(jì)要求被納入相關(guān)規(guī)范后,我國(guó)高層建筑的抗震設(shè)計(jì)已普遍采用抗震性能化設(shè)計(jì)方法,但有關(guān)大震彈塑性分析階段的構(gòu)件抗震性能一直缺乏統(tǒng)一的評(píng)價(jià)指標(biāo)和評(píng)價(jià)依據(jù). 首先梳理了鋼筋混凝土構(gòu)件關(guān)于延性變形的不同評(píng)價(jià)指標(biāo),簡(jiǎn)要說(shuō)明了其特點(diǎn)和適用性,并對(duì)各評(píng)價(jià)指標(biāo)之間的關(guān)系進(jìn)行了理論換算;然后采用有限元軟件 ABAQUS 數(shù)值模擬了典型鋼筋混凝土梁、柱構(gòu)件在不同軸壓比和不同配箍率下的單調(diào)加載試驗(yàn)與低周反復(fù)試驗(yàn),獲得了其滯回曲線(xiàn)和骨架曲線(xiàn),并將結(jié)果與美國(guó)規(guī)范 ASCE 41-17 和我國(guó)《建筑結(jié)構(gòu)抗震性能化設(shè)計(jì)標(biāo)準(zhǔn)》(T/ CECA 20024—2022)的弦線(xiàn)轉(zhuǎn)角評(píng)價(jià)指標(biāo)及其參數(shù)進(jìn)行了對(duì)比研究;最后結(jié)合結(jié)構(gòu)大震彈塑性分析時(shí)的單元?jiǎng)澐殖叽缂芭c弦線(xiàn)轉(zhuǎn)角指標(biāo)的對(duì)應(yīng)關(guān)系,提出了鋼筋混凝土構(gòu)件基于材料應(yīng)變指標(biāo)的評(píng)價(jià)參數(shù). 研究成果可為鋼筋混凝土構(gòu)件的抗震性能化評(píng)價(jià)提供參考.

關(guān)鍵詞: 鋼筋混凝土構(gòu)件; 抗震性能評(píng)價(jià); 弦線(xiàn)轉(zhuǎn)角指標(biāo); 曲率指標(biāo); 應(yīng)變指標(biāo)

中圖分類(lèi)號(hào):TU318+. 1 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)21-0001-07

DOI:10.19701 / j.jzjg.JG22007

Comparative study on seismic performance evaluation methods and different indexes of reinforced concrete components

ZHOU Jianlong, JIANG Xiaofeng, WANG Pu, GAO Xinyu, WANG Zhijun

(East China Architectural Design & Research Institute Co. , Ltd., Shanghai 200011, China)

Abstract: Since the provisions of seismic performance-based design were adopted in codes, the seismic performance-baseddesign method has been widely used in the seismic design of high-rise buildings in China. However, the evaluation indexesand evaluation parameters of structural components were still lack for seismic performance evaluation in elastoplasticanalysis stage under rare earthquakes. Firstly, the different evaluation indexes of ductile deformation of reinforced concrete components were sorted out, their characteristics and applicability were briefly indicated, and the theoretical relationshipsbetween the evaluation indexes were descripted. Then, the monotonic loading tests and low-cycle repeated tests of typicalreinforced concrete beams and columns under different axial compression ratios and different stirrup ratios were numericallysimulated by using the finite element software ABAQUS, the hysteretic curves and skeleton curves were obtained, and theseresults were compared with the chord rotation index and its parameters of American code ASCE 41-17 and the Standard forperformance-based seismic design of building structures(T/ CECA 20024—2022)in China. Finally, the elevation parametersbased on material strain of reinforced concrete components were proposed according to the meshing size of structuralcomponents in rare earthquake elastoplastic analysis and their relationships with chord rotation index. The research resultscan provide reference for the establishment of seismic performance evaluation of reinforced concrete components.

Keywords: reinforced concrete component; seismic performance evaluation; chord rotation index; curvature index;strain index

第一作者:周建龍,全國(guó)工程勘察設(shè)計(jì)大師,教授級(jí)高級(jí)工程師,主要從事超高層結(jié)構(gòu)設(shè)計(jì)與研究工作,Email: zjl0290@ ecadi. com.

[引用本文] 周建龍,江曉峰,王璞,等. 鋼筋混凝土構(gòu)件的抗震性能評(píng)價(jià)方法及不同指標(biāo)對(duì)比研究[ J]. 建筑結(jié)構(gòu),2022,52(21):1-7,21. ZHOU Jianlong,JIANG Xiaofeng,WANG Pu,et al. Comparative study on seismic performanceevaluation methods and different indexes of reinforced concrete components[J]. Building Structure,2022,52(21):1-7,21