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（北京市建筑設計研究院有限公司， 北京 100045）
［摘要］魯-臺經貿中心包括展覽區(qū)、商業(yè)區(qū)、共享大廳等功能區(qū)，主體采用框架-剪力墻結構，外圍采用鋼結構網殼圍合成整體。展覽區(qū)是雙層展廳，展廳樓面和屋面均采用鋼桁架體系。樓層結構采用雙向布置的鋼桁架，是由主桁架、次桁架、小桁架等組成的多層次桁架系統(tǒng)。屋面采用大跨空間鋼桁架結構，主桁架為倒三角形管桁架，跨度72m。通過邊桁架、拉結桁架和上弦支撐等，將主桁架拉結成為整體。本項目鋼結構具有空間造型復雜、跨度大、荷載重、結構超長等特點。采用多種程序建立空間模型，對結構進行整體分析和多種補充分析，包括：樓層鋼結構活荷載不利布置分析、豎向振動分析；屋面鋼桁架穩(wěn)定分析；整體結構動力彈塑性分析等。對重點部位和重點構件提出專門的性能目標。重視鋼結構節(jié)點和構造設計，保證鋼結構的安全性和冗余性。項目已投入使用，鋼結構受力性能良好，結構體系安全可行。
［關鍵詞］大跨鋼結構； 鋼桁架； 活荷載不利布置； 穩(wěn)定分析； 動力彈塑性分析； 節(jié)點設計； 支座設計
中圖分類號：TU318， TU391文獻標識碼：A文章編號：1002-848X(2016)17-0024-07
Complex steel structural design of exhibition hall for Shandong-Taiwan Exhibition Center
Wei Yong
(Beijing Institute of Architectural Design, Beijing 100045, China)
Abstract:Shandong-Taiwan Exhibition Center includes exhibition areas, commercial areas and a public hall. The main structure adopts reinforced concrete frame-shear wall, with peripheral steel structure latticed shell to enclose as a whole. The exhibition hall is double layered, and floor and roof structure adopt steel truss system. The floor structure adopts two-way steel truss system which is composed of a multi-level truss system including main truss, secondary truss and floor truss. The roof structure adopts large-span spatial steel truss system, with the main truss of inverted triangle steel tube truss and span of 72m. Through the side truss, pulling truss and upper cord bracing, the main truss is connected as a whole. The steel structure has the following characteristics, such as: complex spatial relationship, large span, heavy load and super length. Different calculation programs were used to establish the spatial calculation models and conduct the whole structure analysis and multiple supplementary analyses, including: the unfavorable live load distribution analysis and vertical vibration analysis for floor steel structure; stability analysis for the roof steel truss; dynamic elastic-plastic analysis for the whole structure. Specific performance objectives were developed for key parts and components. The steel joint and detail design were emphasized to ensure the safety and robust of the steel structure. The project has been put into use, the steel structural works in good condition, and the steel structural system is safe and reliable.
Keywords:large-span steel structure; steel truss; unfavorable live load distribution; stability analysis; dynamic elastic-plastic analysis; joint design; bearing design
作者簡介：魏勇，博士，高級工程師，一級注冊結構工程師，Email:weiyong1980@126.com。
