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朱保兵， 徐曉明， 周宇慶
（上海建筑設計研究院有限公司，上海 200041）[摘要] 遼寧省科技館屬于超長、不規(guī)則、帶大懸挑的超限鋼-混凝土混合結(jié)構(gòu)。介紹了工程的特點和結(jié)構(gòu)體系的選擇，針對結(jié)構(gòu)超限情況提出了相關(guān)的抗震措施。針對主體混凝土結(jié)構(gòu)、主體鋼結(jié)構(gòu)、鋼結(jié)構(gòu)球體、大挑檐，進行了系統(tǒng)的分析和設計。經(jīng)過對整體結(jié)構(gòu)進行彈塑性動力時程分析，考察了結(jié)構(gòu)的塑性發(fā)展程度和變形能力，并對薄弱構(gòu)件進行了加強。支撐體系設計時考慮采用屈曲約束支撐構(gòu)件，以盡量減小外觀尺寸并改善抗震性能。設計結(jié)果表明，結(jié)構(gòu)抗震性能良好，結(jié)構(gòu)體系安全可行。
[關(guān)鍵詞] 結(jié)構(gòu)超限；混合結(jié)構(gòu)；彈塑性動力時程分析；屈曲約束支撐
中圖分類號：TU318 文獻標識碼：A 文章編號：1002-848X(2012) Sl-0356-05Study on overrun structural design of Liaorung province Science and Technology Museum
Zhu Baobing, Xu Xiaoming, Zhou Yuqing
( Shanghai Institute of Architectural Design&Research Co., Ltd., Shanghai 200041, China)Abstract: Liaoning province Science and Technology Museum belongs to the long, irregular, overrun with large cantilever steel-concrete mixed structure. The characteristics and choice of structure system was described. Seismic measures related to the structural overrun situation were recommended. System analysis and design were done for main concrete structure, steel structure, steel ball, corona. After elastic-plastic dynamic time history analysis of the whole structure, degree of plastic development and deformation ability of the structure were checked and the weak component were strengthened. To
minimize the apparent size and improve the earthquake resistance performance, buckling-restrained brace support system was used. Design result shows that structural earthquake resistance performance is good, structural system is security and feasible.
Keywords: structural overrun; mixed structure; elastic-plastic dynamic time history analysis; buckling-restrained brace
