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(1天津大學建筑工程學院，天津 300072；2天津大學建筑學院，天津 300072；3天津大學建筑設計規(guī)劃研究總院，天津 300072)
[摘要] 汶川縣映秀鎮(zhèn)漁子溪村241戶民居災后重建項目中采用的方鋼管混凝土組合異形柱結構是一種新型結構體系。本文介紹了方鋼管混凝土組合異形柱結構在汶川災后重建工程中的應用情況，采用振型分解反應譜法和Pushover分析法，對異形柱結構在多遇地震和罕遇地震下的承載能力、變形能力及屈服機制進行分析。結果表明，方鋼管混凝土組合異形柱結構在多遇地震和罕遇地震下均有較好的抗震性能，作為一種綠色建筑形式，在地震多發(fā)區(qū)和村鎮(zhèn)地區(qū)有較好的應用前景。
[關鍵詞] 方鋼管混凝土組合異形柱;抗震性能;振型分解反應譜分析;Pushover分析
中圖分類號：T398U 文獻標識碼：A 文章編號：1002-848Xp（2013)S1-1128-05
Study on seismic performance of special-shaped column composed of concrete-filled square steel tubes（SCFST）structure in Wenchuan
Wang Yawen 1, Chen Zhihua1, Zhou Ting2, Li Yanbo1, Yu Jinghai3, Wang Heng3
（1 School of Civil Engineering, Tianjin University, Tianjin 300072, China；2 School of Architecture, Tianjin University, Tianjin 300072, China；3 Tianjin University Research Institute of Architectural Design & Urban Planning, Tianjin300072, China）
Abstract: Special-shaped column composed of concrete-filled square steel tubes（SCFST）structure which applied to post-disaster reconstruction in Wenchuan county after 5.12 earthquake is a new type of structural system. In this paper, a brief introduction of the application of SCFST structure was provided. Load bearing capacity, deformation capacity and yield mechanism of SCFST under frequent and rare earthquake were analyzed using response spectrum modal analysis method as well as pushover method. Results have shown that, SCFST structure has preferable earthquake resistant performance under both frequent and rare earthquake conditions. Further, as a kind of green building, SCFST structure should have good application prospect in the future as it widely applied to earthquake-prone zones and remote rural areas in China.
Keywords: special-shaped column composed of concrete-filled square steel tubes； seismic performance, response spectrum analysis； Pushover analysis
