884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(1 華東建筑設(shè)計(jì)研究院有限公司, 上海 200002； 2 上海超高層建筑設(shè)計(jì)工程技術(shù)研究中心, 上海 200002)

［摘要］退臺式建筑可以塑造豐富的立面體型，用于超高層建筑有助于滿足日照要求。同時(shí)，退臺式超高層建筑也給結(jié)構(gòu)帶來挑戰(zhàn)，包括豎向構(gòu)件收進(jìn)、塔樓出現(xiàn)偏心以及剛度突變等。對退臺式超高層建筑的外框柱和核心筒的不同收進(jìn)方式進(jìn)行研究，并分析其受力特點(diǎn)。退臺式超高層建筑不可避免出現(xiàn)偏心問題，分析豎向荷載下偏心引起的傾覆力矩和水平變形，結(jié)果表明偏心引起的效應(yīng)不可忽略。對退臺處的結(jié)構(gòu)剛度變化及其抗震性能進(jìn)行研究，指出設(shè)計(jì)中應(yīng)采取措施盡量減小剛度突變，并對退臺處抗側(cè)結(jié)構(gòu)進(jìn)行加強(qiáng)。

［關(guān)鍵詞］超高層建筑； 退臺； 收進(jìn)方式； 塔樓偏心； 抗側(cè)剛度突變

中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)13-0007-06

Structural design of super-tall building with setback terraces

Bao Lianjin1,2, Chen Jianxing1,2, Wang Xin1,2, Zhou Jianlong1,2, Jiang Yue1,2

(1 East China Architectural Design & Research Institute, Shanghai 200002, China; 2 Shanghai Engineering Technology Research Center of Super High-rise Building Design, Shanghai 200002, China)

Abstract:Buildings with setback terraces, usually used to create a rich facade shape, show great advantage to meet the sunlight requirement of super-tall buildings. As to the structural design of super-tall buildings, the setback terraces will bring  challenges, including the recession of vertical members, eccentricity of tower and sharply change of lateral stiffness. Different recession modes of columns and shear wall cores in super-tall building with setback terraces were investigated, and the mechanics of the recession structure were studied. The eccentricity of tower in super high-rise building with setback terraces is inevitable. The overturn moment and lateral displacement caused by eccentricity under vertical load were analyzed, and the results show that the effect caused by eccentricity can not be ignored. With the analysis of lateral stiffness change and seismic performance of the structure near the setback, it is pointed out that measures should be taken to minimize the change of stiffness in the design, and the lateral resistance structure near the setback should be strengthened.

Keywords:super-tall building; setback terrace; recession mode; eccentricity of tower; lateral stiffness abrupt change