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(同濟(jì)大學(xué)建筑設(shè)計(jì)研究院 上海 200092)
［提要］ 擬建于上海的某超高層建筑，立面造型為梭形，結(jié)構(gòu)體系采用了筒中筒結(jié)構(gòu)，根據(jù)其特殊的建筑造型，外筒采取了斜柱方案。分析表明，翼框柱的傾斜可以改變結(jié)構(gòu)的側(cè)向剛度和樓層內(nèi)力的分布，內(nèi)筒和外筒的腹板框架承擔(dān)了更大的層內(nèi)力；結(jié)構(gòu)上部的剛度增加，下部的剛度減小。建議在結(jié)構(gòu)底部適當(dāng)提高核心筒混凝土墻中鋼骨的含骨率，并且把外筒鋼柱改成型鋼混凝土柱，以提高結(jié)構(gòu)的剛度、承載力和延性。
［關(guān)鍵詞］ 梭形 斜柱 筒中筒 超高層
Mechanic Behaviors of a Superhighrise Tubeintube Structure with Shuttleshaped Profiles/Wang Yongchun，Ding Jiemin，He Zhijun(The Architectural Design & Research Institute of Tongji University，Shanghai 200092,China)
Abstract:A superhigh rise building with shuttleshaped profiles,which will be constructed in Shanghai,is a tubeintube structure.Most of the columns of the outer tube are leaning due to its special architecture shape.The influence of leaning columns on the inner force and rigidity of the framed tubes is presented,and the mechanic behaviors of the tubeintube structure are analyzed in detail.The conclusions provide a reference to similar projects for structural designers.
Keywords:shuttle shape; leaning columns; tubeintube; superhigh rise