- 摘 要
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(天津市建筑設計院， 天津 300074)
［摘要］津灣廣場9號樓超限高層建筑采用鋼筋混凝土核心筒-矩形鋼管混凝土柱鋼框架結構體系。結構底部布置鋼混凝土組合巨柱，在第8，58層設置轉換桁架，將其上部的48根外框柱轉換為下部的8根巨柱和4根角柱，且轉換桁架下部還懸吊了3層外框柱。鑒于第8層的轉換桁架的重要性，對轉換桁架進行了性能化設計，并分析了施工分段安裝順序對轉換桁架的影響。計算結果表明，轉換桁架達到了預期的性能目標，施工過程中轉換桁架的安裝是合理、安全的。
［關鍵詞］津灣廣場; 超限高層結構; 轉換桁架; 抗震性能設計; 施工順序模擬; 鑄鋼節(jié)點
中圖分類號：TU973.1 標識碼：A 文章編號：1002-848X(2014)02-0043-05
Structural design of transfer truss of No.9 building in Jinwan Square
Zhou Deling, Wang Yi, Zhao Hua, Zhang Wei
(Tianjin Architecture Design Institute, Tianjin 300074, China)
Abstract: Structural system of reinforced concrete corewall and concrete-filled steel rectangular tube frame was adopted for out-of-code high-rise No.9 building in Jinwan Square. Steel-concrete composite huge columns were set at the structure bottom and transfer trusses were arranged on the 8th and 58 th floor. Transfer trusses convert 48 outer frame columns on its upper parts to 8 huge columns and 4 corner columns on its lower parts. Three floors of outer frame columns were hanged below the transfer truss. In consideration of the importance of the transfer truss on the 8th flow, performance-based design method was used. The influence of construction sectional installation sequence on the transfer truss was analyzed. The results show that the transfer truss can meet the expected performance objectives and construction installation is feasible and safe.
Keywords: Jinwan Square; out-of-code high-rise structure; transfer truss; performance-based seismic design; construction sequence simulation; cast steel node
作者簡介：周德玲，碩士，高級工程師，一級注冊結構工程師，Email:zhoudeling63@eyou.com。
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