- 摘 要
-
（1 中南建筑設計院股份有限公司， 武漢 430071； 2 中建鋼構有限公司， 深圳 518040）
［摘要］針對成都南站樞紐城市綜合體連體喇叭花狀雨棚的建筑特點，提出了采用組合鋼柱（群柱）及單層剛架網(wǎng)格結構實現(xiàn)其建筑形態(tài)的方法。采用SAP2000軟件對結構進行了靜力和穩(wěn)定性分析，提出了計算長度系數(shù)取值方法。分析結果表明，懸挑部分最先失穩(wěn)破壞；恒載和溫度起控制作用。各喇叭花交匯相連后整體抗側剛度大幅提高。箱形徑向主梁與環(huán)向圓鋼管的剛接是結構體系實現(xiàn)的關鍵，提出了鋼結構關鍵節(jié)點的實現(xiàn)方法。最后介紹了無胎架鋼拉索施工和點式胎架相結合的施工工藝，結合軸坐標法測量技術順利實現(xiàn)了鋼結構的安裝。
［關鍵詞］喇叭花狀結構； 單層剛架網(wǎng)格結構； 穩(wěn)定分析； 節(jié)點設計； 無胎架鋼拉索施工
中圖分類號：TU318文獻標識碼：A文章編號：1002-848X(2018)17-0028-06
Design and analysis of trumpet-like connected steel structure of Chengdu South Station Hub City Complex
Ji Han1, Li Ting1, Sun Zhaomin1, Chen Xiaowei2
(1 Central-South Architectutal Design Institute Co.， Ltd., Wuhan 430071, China; 2 China Construction Steel Structure Co., Ltd., Shenzhen 518040, China)
Abstract:For the architectural characteristics of the trumpet-like connected canopy of Chengdu South Station Hub City Complex, a method of using the combined steel columns (group column) and single-layer rigid frame grid structure was proposed for realizing the architectural form. The static and stability analyses of the structure were carried out by using SAP2000 software, and the method of calculating the length coefficient was proposed. Analysis results show that, the cantilevering part firstly suffers from the buckling failure, and the dead load and temperature play a controlling role. After the trumpet-like structures were connected, the overall lateral stiffness was greatly improved. The rigid connection between the box-shaped radial main beam and the circumferential circular steel tube was the key to the realization of the structural system, and the realization method of the key nodes of the steel structure was proposed. Finally, the construction technologies of the combination of the no-frame steel cable construction and the point-type frame were introduced, and the installation of the steel structure was successfully realized according to the axis coordinate measuring method.
Keywords:trumpet-like structure; single-layer rigid frame grid structure; stability analysis; node design; no-frame steel cable construction
作者簡介：紀晗，博士，高級工程師，Email：csadi_jih@zonaland.cn。
