- 摘 要
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李洪求1， 程小齊1， 劉慶江1， 王彥博2， 胡大柱2
（1 北京維拓時代建筑設(shè)計有限公司，北京 100025；2 同濟大學(xué)，上海 200092）[摘要] 雙塔連體結(jié)構(gòu)是兩個高層建筑由設(shè)置在一定高度處的架空連廊相連而組成的復(fù)雜高層建筑結(jié)構(gòu)。雙塔連體結(jié)構(gòu)塔樓剛度大，而連接體部分受力復(fù)雜。連接體部分要協(xié)調(diào)兩側(cè)塔樓結(jié)構(gòu)的變形，在地震作用下的反應(yīng)遠(yuǎn)比單塔結(jié)構(gòu)和無連接體的多塔結(jié)構(gòu)受力復(fù)雜，會出現(xiàn)較強的耦聯(lián)震動、扭轉(zhuǎn)加大等現(xiàn)象，其結(jié)構(gòu)的抗震性能也不如單體結(jié)構(gòu)，我國現(xiàn)行《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》中規(guī)定連體部位應(yīng)采用更嚴(yán)格的抗震措施進行設(shè)計。屈曲約束支撐作為一種集結(jié)構(gòu)構(gòu)件和耗能構(gòu)件為一體的新技術(shù)，承載力高，變形能力強，解決了普通鋼支撐受壓失穩(wěn)的問題。探討了連體結(jié)構(gòu)中設(shè)置屈曲約束支撐后結(jié)構(gòu)性能的變化，通過動力彈塑形分析方法研究了結(jié)構(gòu)的抗震性能，為解決復(fù)雜連體結(jié)構(gòu)提供一些技術(shù)參考。
[關(guān)鍵詞] 復(fù)雜高層；連體結(jié)構(gòu)；屈曲約束支撐；抗震性能
中圖分類號：TU318 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X( 2011) Sl-0131-05Application of buckjing restrained brace on high-rise multi-tower connected building
Li Hongqiu1, Cheng Xiaoqi1, Liu Qingjian1, Wang Yanbo2, Hu Dazhu2
(1 Beijing Victory Star Architectural Design Co., Ltd., Beijing 100025; 2 Tongji University, Shanghai 200092, China)Abstract: Lateral stiffness of each tower of connected structure is relatively large. The displacement of each tower is constrained by the joint gallery in connecting region. The forced state of the joint gallery members are more complex under earthquake and the seismic behavior of connected stmcture is worse than single structure. It is also shown in Technical specification for concrete structures of tall building that connected stmctures are suitable for more rigid requirements. BucHing restrained brace (BRB) is a high efficiency lateral force-resisting member that can be used in decreasing the earthquake actions and increasing energy dissipation. Elastic-plastic analysis models with BRB and common H-brace in the joint gallery were conducted to evaluate improvement of seismic behavior.
Keywords: complex high-rise building; multi-tower connected building; buckling restrained brace; seismic behavior
