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李 正1， 朱炳寅1， 李 寧2
（1 中國建筑設(shè)計(jì)研究院，北京 100044；2 天津大學(xué)建筑工程學(xué)院，天津 300072）[摘要] 基于大型通用有限元軟件ABAQUS，將混凝土的修正Faria-Oliver損傷模型與鋼筋的由Sakai與Kawashima修正的Menegotto-Pinto模型，利用用戶材料子程序接口VUMAT嵌入到ABAQUS材料庫中，結(jié)合纖維梁柱單元的等效模擬策略，模擬分析了鋼筋混凝土多層框架結(jié)構(gòu)的地震損傷發(fā)展全過程。研究表明：該模擬方法能有效識(shí)別出鋼筋混凝土框架結(jié)構(gòu)的地震損傷、破壞全過程，便于設(shè)計(jì)人員直觀地了解框架結(jié)構(gòu)的抗震薄弱部位，從而采取相應(yīng)的損傷控制措施，同時(shí)也為高層建筑結(jié)構(gòu)的地震損傷分析與控制奠定了基礎(chǔ)。
[關(guān)鍵詞] 鋼筋混凝土；框架結(jié)構(gòu)；纖維單元；損傷本構(gòu)模型；地震反應(yīng)
中圖分類號(hào)：TU313.3 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002 -848X( 2011) Sl -0249 -04Seismic damage analysis of reinforced concrete frame structures based on ABAQUS
Li Zheng1, Zhu Bingyin1, Li Ning2
(1 China Arclutecture Design & Research Group, Beijing 100044, China; 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China)Abstract: Based on general-purpose FEA software ABAQUS, the uniaxial modified Faria-Oliver damage model for concrete and modified Menegotto-Pinto model by Sakai and Kawashima for rebar are embedded into the material library of ABAQUS through the user material subroutine VUMAT. Then, the seismic damage analysis of a reinforced concrete( RC) multi-storey frame structure is performed using the equivalent fiber model of beam-column element. The results show that the simulation method established in the present paper can capture the damage and failure process of the RC frame structures effectively. It is convenient for the designers to understand the weak part of the frame structures and take the damage control measures, furthermore, lays the foundation for the seismic damage analysis and control of the tall Inulding structures.
Keywords: reinforced concrete; frame structure; fiber element; damage constitutive model; seismic response
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