凱晨廣場多塔連體結(jié)構(gòu)設(shè)計研究
張春濃,徐斌
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(北京市建筑設(shè)計研究院,100045)[提要]凱晨廣場為三塔連體結(jié)構(gòu),設(shè)計中從概念入手,對一般三塔連體結(jié)構(gòu)的振型參與系數(shù)進行理論分析,了解連體部位在地震作用下的反應(yīng)規(guī)律,合理選擇連體與主體部分的連接方式。通過提高連體與主體連接部位抗震等級,采取特殊構(gòu)造措施等方法,加強連體部位與主體結(jié)構(gòu)的連接。最后通過靜力彈塑性分析,研究了結(jié)構(gòu)在罕遇地震下結(jié)構(gòu)的性能。結(jié)果表明,通過采用適度的加強措施,在其他構(gòu)件均已出現(xiàn)塑性鉸的情況下,連接部位依然可以保持彈性。[關(guān)鍵詞]連體結(jié)構(gòu);振型參與系數(shù);附加偏心距;靜力彈塑性分析Design and Research on Mult-connected-tower Structure of the Chemsunny Plaza/Zhang Chunnong,Xu Bin(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: Chemsunny Plaza is a structure with three-connected-tower. Typical connected structure"s modal participation factor was analyzed theoretically for concept design, through which reasonable structure system and connection were constructed. The connection of bridge and main structure was enhanced by improving the level of earthquake resistance and special construction measures. Static nonlinear analysis result shows that connection remains elastic at infrequency earthquake while other members have turned into inelastic.Keywords:related structures; modal participation factors; additional eccentric distance; static nonlinear analysis