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（南京金宸建筑設(shè)計(jì)有限公司， 南京 210019）

［摘要］某商業(yè)廣場項(xiàng)目為大型商業(yè)綜合體，地下3層，地上10層，主屋面高度58-5m，采用框架-剪力墻結(jié)構(gòu)體系。因建筑功能多，造型復(fù)雜，結(jié)構(gòu)平面及豎向存在多項(xiàng)設(shè)計(jì)難點(diǎn)，除采用SATWE，MIDAS Building軟件對結(jié)構(gòu)進(jìn)行整體分析外，還對關(guān)鍵構(gòu)件根據(jù)其實(shí)際受力狀態(tài)進(jìn)行單獨(dú)的計(jì)算與分析。簡要介紹了項(xiàng)目的結(jié)構(gòu)體系、結(jié)構(gòu)整體設(shè)計(jì)情況，對結(jié)構(gòu)進(jìn)行了小震彈性時(shí)程分析及大震靜力彈塑性時(shí)程分析。重點(diǎn)介紹了工程地下室抗浮設(shè)計(jì)、嵌固端設(shè)置和超長地下室的處理措施，大跨鋼結(jié)構(gòu)人行天橋設(shè)計(jì)、36m跨度溜冰場張弦梁屋面設(shè)計(jì)、溜冰場幕墻抗風(fēng)柱設(shè)計(jì)以及大懸挑桁架設(shè)計(jì)，設(shè)計(jì)思路可供同類工程參考。

［關(guān)鍵詞］抗浮設(shè)計(jì)； 超長地下室； 彈塑性時(shí)程分析； 張弦梁屋面； 大懸挑桁架

中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)03-0020-08

Key techniques for structural design of a commercial plaza

Lü Hengzhu, Sun Yaping, Xu Congrong, Hou Shanmin

(Nanjing Kingdom Architecture Design Co., Ltd., Nanjing 210019, China)

Abstract:A commercial plaza is a large commercial complex with 3  floors underground and 10 floors above ground. The main roof is 58-5m high and the building adopts the frame-shear wall structural system. Due to many architectural functions and complex shapes, there are many design difficulties in the structural plane and vertical direction. In addition to adopting SATWE, MIDAS Building softwares for the overall analysis of the structure,   the key components in the structure were separately calculate and analyzed according to their actual mechanical states. The structural system and overall structural design of the project were briefly introduced. The elastic time-history analysis under  frequent earthquake and the static elasto-plastic time-history analysis under  rare earthquake were carried out. The anti-floating design of the basement of the project, the installation of the embedded end and the treatment of the super-long basement, the design of the steel large-span pedestrian bridge, the design of the beam string roof of the 36m-span rink, the design of the anti-wind column of the rink curtain wall and the design of the large cantilever truss were introduced emphatically. Design process could be used for reference in similar projects.

Keywords:anti-floating design; super-long basement; elasto-plastic time\|history analysis; beam string structure; large cantilever truss