（中國建筑標(biāo)準(zhǔn)設(shè)計(jì)研究院，北京100044）

[摘要] 近年來，我國高層建筑發(fā)展迅速，結(jié)構(gòu)形式日趨多樣化，其中大底盤多塔結(jié)構(gòu)在高層、超高層建筑領(lǐng)域應(yīng)用十分廣泛。金宇新天地項(xiàng)目二期B~E#為大底盤裙房多塔結(jié)構(gòu)，設(shè)計(jì)中通過ETABS，PERFORM-3D有限元軟件對(duì)多種結(jié)構(gòu)模型的計(jì)算和比較，探索大底盤多塔結(jié)構(gòu)的設(shè)計(jì)方法。本工程結(jié)構(gòu)體系復(fù)雜，對(duì)中間各部分連橋預(yù)設(shè)抗震性能指標(biāo)，采用PERFORM-3D對(duì)整體模型進(jìn)行彈塑性時(shí)程分析，保證中間連橋中震不屈服。

[關(guān)鍵詞]  高層建筑；大底盤多塔結(jié)構(gòu)；抗震性能指標(biāo)；彈塑性時(shí)程分析

中圖分類號(hào)：TU318， TU973.3      文獻(xiàn)標(biāo)識(shí)碼：A         文章編號(hào)：

Structure design of Jinyu New World in Huhhot

Xu Wenjie，Yang Chao，Li Yunfeng，Wang Hanbing，Liu Guoyou

(China Institute of Building Standard Design& Research, Beijing 100044, China)

Abstract: Recently with the fast development of high-rise buildings in China, lots of structural styles were used in the newly-built buildings. Multi-tower structures with an enlarged base, as one of these structural styles had been applied in more and more projects. The B-E buildings of the Jinyu New World project Phase II were the typical multi-tower structures with an enlarged base. ETABS and PERFORM-3D were performed in the analysis of the buildings, and the design methods of this kind of structures were investigated. Since the structural system was very complicated, the inelastic nonlinear time-history analysis was also performed to discuss the seismic performance of the entire structure with the software of PERFORM-3D, with the purpose of ensuring that the connected parts would not yield under the medium earthquake.

Keywords: high-rise building; multi-tower structures with an enlarged base; seismic behavior index; inelastic time history analysis