- 摘 要
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（1 北京市建筑設計研究院有限公司， 北京 100045； 2 CIOB中國西部區(qū)委員會， 重慶 401121）
［摘要］中國摩商業(yè)綜合體大跨屋蓋平面尺寸約為（123～139）m×231m，短向最大跨度約為112～139m。屋蓋為自由曲面雙向正交正放網格結構，由中心向四周逐漸降低。屋蓋結構由六榀中心支撐鋼框架支承，中心支撐框架剛接于下部混凝土結構，下部結構由防震縫分為四個結構單元。屋面結構跨度大且與主體混凝土結構連接復雜。對結構連接布置與改進進行了介紹，并對屋蓋支承體系抗側能力、結構豎向承載能力和行波效應影響進行分析。分析結果表明，結構體系可行且合理，為后續(xù)結構設計提供依據。
［關鍵詞］雙向正交正放網格； 邊界條件； 抗側能力； 豎向承載力； 行波效應
中圖分類號：TU393-3文獻標識碼：A文章編號：1002-848X(2019)18-0110-05
Analysis on large-span roof structural system of commercial complex of China Mall
Yan Xiaojing1, Qin Kai1, Zhu Zhongyi1, Zhang Feng2, Zhou Zhongfa1, Li Huafeng1, Liu Jun1, Tang Yiqiao1
（1 Beijing Institute of Architectural Design, Beijing 100045, China; 2 West China of CIOB, Chongqing 401121, China）
Abstract:The plane dimension of the large-span roof of the commercial complex of China Mall is about (123~139) m×231 m, and the maximum span in short direction is about 112~139m. The roof is a bi-directional orthogonal placement grid structure with free-form surface, which decreases gradually from the center to the periphery. The roof structure is supported by six central braced steel frames. The central braced frame is rigidly connected to the lower concrete structure. The lower structure is divided into four structural units by seismic joints. The roof structure has a large span and complicated connection with the main concrete structure. The structural connection arrangement and improvement were introduced, and the lateral resistance, vertical bearing capacity and traveling wave effect of roof support system were analyzed. The analysis results show that the structural system is feasible and reasonable, which provides a basis for the follow-up structural design.
Keywords:bi-directional orthogonal placement grid; boundary condition; lateral resistance; vertical bearing capacity; traveling wave effect
作者簡介：閆曉京,碩士,工程師，Email: yanxiaojing@biad.com.cn。
