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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

［摘要］城奧大廈結(jié)構(gòu)主體采用鋼框架-混凝土核心筒結(jié)構(gòu)體系，屋面采用雙層鋼網(wǎng)殼結(jié)構(gòu)，與內(nèi)部升到頂層的核心筒連接為一個(gè)整體； 項(xiàng)目還包括東南側(cè)邊庭結(jié)構(gòu)、地下2層～地上2層的蛇形坡道等。本項(xiàng)目鋼結(jié)構(gòu)具有空間造型復(fù)雜、跨度大、荷載重等特點(diǎn)，采用SATWE和MIDAS Gen軟件建立整體計(jì)算模型，對(duì)整體結(jié)構(gòu)進(jìn)行多遇地震下的反應(yīng)譜分析； 采用MIDAS Gen軟件對(duì)鋼屋蓋結(jié)構(gòu)、邊庭結(jié)構(gòu)和蛇形坡道進(jìn)行補(bǔ)充分析。計(jì)算結(jié)果表明，結(jié)構(gòu)具有良好的抗震性能，鋼結(jié)構(gòu)安全性和冗余性可以保證。

［關(guān)鍵詞］鋼框架混凝土核心筒結(jié)構(gòu)； 反應(yīng)譜分析； 鋼屋蓋； 邊庭結(jié)構(gòu)

中圖分類號(hào)：TU398+.2, TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)20-0016-07

Structural design of Cheng′ao Building

PANG Yanfeng, ZHOU Sihong, ZHANG Shizhong, SHEN Kaizhen, CHI Xin, CHANG Hong

（Beijing Institute of Architectural Design， Beijing 100045， China）

Abstract:The main structure of Cheng′ao Building adopts a steel frame-concrete corewall structural system, and the roof adopts a double-layer steel reticulated shell structure, which is connected to the corewall rising to the top as a whole; the project also includes the southeast side courtyard structure and serpentine ramps from 2 underground floors to 2 floors above the ground. The steel structure of this project has the characteristics of complex spatial modeling, large span, heavy load, etc. The overall calculation model was established with SATWE and MIDAS Gen software, and the response spectrum analysis of the overall structure was performed under frequent earthquake; the MIDAS Gen software was used to supplement the analysis of steel roof structure, side courtyard structure and serpentine ramp. The calculation results show that the structure has good seismic performance, and the safety and redundancy of the steel structure can be guaranteed.

Keywords:steel frame-concrete corewall structure; response spectrum analysis; steel roof; side courtyard structure

作者簡(jiǎn)介：龐巖峰，碩士，工程師，Email：pangyanfeng@biad.com.cn。