- 摘 要
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（1 華中科技大學(xué)土木工程與力學(xué)學(xué)院， 武漢 430074；2 上海電力設(shè)計院有限公司， 上海 200025)
［摘要］基于線性損傷理論，在確立混凝土和鋼筋材料的損傷指標(biāo)計算模型的基礎(chǔ)上，通過引入加權(quán)系數(shù)，實現(xiàn)了從材料到鋼筋混凝土構(gòu)件截面、構(gòu)件、樓層及框架結(jié)構(gòu)損傷指標(biāo)的計算；并按我國現(xiàn)行規(guī)范設(shè)計了一個位于抗震設(shè)防烈度為8度區(qū)的5層鋼筋混凝土框架結(jié)構(gòu)；采用OpenSees軟件按上述基于材料的鋼筋混凝土整體結(jié)構(gòu)的損傷評估方法對其進(jìn)行了增量動力分析及損傷評估。計算結(jié)果表明：采用基于材料的損傷模型計算方法，不僅能夠很好地預(yù)測多層鋼筋混凝土框架結(jié)構(gòu)在地震作用下的損傷發(fā)展過程，還能很好地評估多層鋼筋混凝土框架結(jié)構(gòu)在地震作用下的損傷狀態(tài)。
［關(guān)鍵詞］基于性能的抗震設(shè)計； 損傷模型； 纖維單元； 加權(quán)系數(shù)； 地面峰值加速度
中圖分類號：TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2015)06-0007-07
Materialbased damage model research on multilayer RC frame structures
Zhang Yaoting1, Chen Jie1,2, Du Xiaoju1, Guo Zongming1, Lu Jiezhi1
（1 School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China;
2 Shanghai Electric Power Design Institute Co., Ltd.， Shanghai 200025, China)
Abstract:The damage models of steel and concrete were set up based on the linear damage theory and the damage values of reinforced concrete (RC) cross section, member, story and the whole structure were calculated respectively via the damage index of the material by introducing the weighted coefficient. Then a fivestory RC frame structure with seismic fortification intensity of 8 degree was designed according to current codes. The incremental dynamic analysis and damage evaluation of the structure were carried out according to the above materialbased damage evaluation method for RC integral structure by OpenSees software. The results indicate that the damage model method based on materials can predict damage developing process of multilayer RC frame structure and evaluate the damage state of the multilayer RC frame structure under the earthquake effectively.
Keywords:performancebased seismic design; damage model; fiber element; weighted coefficient; ground peak acceleration
*國家自然科學(xué)基金項目（51278218）。
作者簡介：張耀庭，博士，教授，博士生導(dǎo)師，Email：zyt1965@mail.hust.edu.cn。
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