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(1.華東建筑設(shè)計研究院有限公司,上海,200002;2.同濟大學(xué),上海,200092)
［提要］  浦東國際機場T2航站樓主樓鋼屋蓋為復(fù)雜大跨空間結(jié)構(gòu)。采用有限元分析程序ANSYS對航站樓主樓包含下部混凝土框架和上部鋼屋蓋的整體結(jié)構(gòu)進行了罕遇地震下三向地震波輸入的彈塑性時程分析，跟蹤了鋼屋蓋的位移、關(guān)鍵構(gòu)件應(yīng)力、內(nèi)力歷程等動力反應(yīng)，并加以分析比較，考察鋼屋蓋的彈塑性發(fā)展歷程。根據(jù)分析結(jié)果對鋼屋蓋結(jié)構(gòu)的抗震性能進行了評價，認(rèn)為鋼屋蓋結(jié)構(gòu)具有良好的抗震性能。
［關(guān)鍵詞］  鋼屋蓋結(jié)構(gòu)  大跨度空間結(jié)構(gòu)  彈塑性時程分析  抗震性能
Elastoplastic Timehistory Analysis of the Roof Structure of Shanghai Pudong International Airport T2/Zhou Jian1, Liu Qingyun1, Zhang Yaokang1, Chen Yiyi2, Zhao Xianzhong2 (1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China; 2 Tongji University, Shanghai 200092, China)
Abstract:The roof structure of Shanghai Pudong International Airport T2 is a complex longspan space structure. Elastoplastic timehistory analysis for the integral structure of the steel roof structure and its RC substructure subjected to three dimensional earthquakes is carried out with finite element analysis program ANSYS. Dynamic response of the structure such as displacement, stress and internal force of the key structural members is traced, and analyzed by comparison. The process of elastoplastic development is researched. Based on the analysis, the seismic performance of the roof structure is evaluated, and it is shown that the seismic performance of the roof structure is well.
Keywords:steel roof structure; longspan space structure; elastoplastic timehistory analysis; seismic performance
*上海市科委資助項目。