- 摘 要
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(浙江省建筑設計研究院, 杭州 310006)
摘要: 紹興瑞豐銀行大樓由兩幢高度不一的塔樓組成,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,兩塔樓間采用單層平面索網幕墻、鋼桁架及輕鋼玻璃形成空中中庭,存在拉索幕墻與主體結構相互作用的影響。 結構設計時根據單層平面索網水平拉力,確定上部塔樓采用鋼桁架剛性連接。 通過計算四個不同風工況的作用并考慮主體結構剛度影響確定索網初拉力,采用施工模擬分析不同張拉順序的預應力損失規(guī)律及程度。 用帶索網的結構模型進行整體結構分析,并對結構關鍵構件進行抗震性能化設計。 在水平索一端設限力保護裝置,在超設計風壓作用下該裝置能有效減小索拉力,保護主體結構的安全性。 分析結果表明:結構各項指標均滿足規(guī)范相關要求。
關鍵詞: 紹興瑞豐銀行; 單層平面索網; 連體結構; 預應力; 施工模擬; 限力保護裝置
中圖分類號:TU318+. 1 文獻標志碼:A 文章編號:1002-848X(2022)15-0051-07
DOI:10. 19701 / j. jzjg. ZIAD2212
Structural design on system of double tower with sing-layer plane cable net ofShaoxing Ruifeng Bank
HAN Zhoulun, YANG Xuelin, CAI Fengsheng, ZHU Ni
( Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)
Abstract: Shaoxing Ruifeng Bank building is composed of two towers with different heights and adopts reinforced concretecore tube, concrete filled rectangular steel tubular column and steel frame structure system. The single-layer plane cablenet curtain wall, steel truss and light steel glass were used between the two towers to form an atrium. The interactionbetween cable curtain wall and main structure exists. In the structure design, the steel truss rigid connection was adoptedfor the upper tower according to the horizontal tension of the single-layer plane cable net. The initial tension of cable netwas determined by calculating the effects of four different wind conditions and considering the influence of the stiffness ofthe main structure. The law and degree of prestress loss in different tensioning sequences were analyzed by constructionsimulation. The structural model with cable net was used to analyze the whole structure, and the seismic performance-baseddesign of the key components of the structure was carried out. The force limiting protection device was used at end of thehorizontal cable,under the action of super-design wind pressure, the device can effectively reduce the cable tension andprotect the safety of the main structure. The analysis results show that each index of the structure meets the relevantrequirements of the code.
Keywords:Shaoxing Ruifeng Bank; single-layer plane cable net; connected structure; prestress; construction simulation;force limiting protection device
第一作者:韓舟輪,碩士,高級工程師,一級注冊結構工程師,主要從事結構設計工作,Email:383884375@ qq. com。
[引用本文] 韓舟輪,楊學林,蔡鳳生,等. 紹興瑞豐銀行雙塔樓-單層平面索網體系結構設計 [ J] . 建筑結構,2022,52(15) :51-57. HAN Zhoulun ,YANG Xuelin ,CAI Fengsheng ,et al. Structural design on system of double towerwith sing-layer plane cable net of Shaoxing Ruifeng Bank[ J] . Building Structure,2022,52(15) :51-57.
