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（上海中森建筑與工程設(shè)計顧問有限公司， 上海 200062）
［摘要］南昌綠地國際博覽中心屋面采用大跨度空間鋼桁架體系，在屋面上方設(shè)置波浪形的曲線構(gòu)架，主立面采用668m長的拉索幕墻結(jié)構(gòu)，拉索幕墻由單向垂直跨越的預(yù)應(yīng)力拉索體系支承，拉索預(yù)應(yīng)力加載在由V形柱支撐的轉(zhuǎn)換桁架上。針對V形柱及抗連續(xù)性倒塌性能做了重點分析。考慮到建筑物體量巨大，受高度及體型的影響，建筑物周圍風(fēng)環(huán)境狀況復(fù)雜，因此對主體結(jié)構(gòu)及幕墻風(fēng)洞試驗進行了研究，風(fēng)洞實驗結(jié)果表明，圍護結(jié)構(gòu)的屋面最大負風(fēng)壓是規(guī)范值的1-8倍，墻面最大正風(fēng)壓為規(guī)范值的1-6倍。
［關(guān)鍵詞］南昌綠地國際博覽中心； 拉索幕墻； V形柱； 連續(xù)性倒塌； 風(fēng)洞試驗
中圖分類號：TU375, TU378文獻標識碼：A文章編號：1002-848X(2019)15-0044-04
Structural design of Nanchang Greenland International Expo Center
Sun Dayong, Xiang Xianyun, Wu Xueshu, Zhang Yong
(Zhongsen Architectural & Engineering Designing Consultants Ltd., Shanghai 200062, China)
Abstract:The roof of Nanchang Greenland International Expo Center adopts a large-span spatial steel truss system, with wavy curved frame above the roof. The main elevation adopts 668m long cable curtain wall structure. The cable curtain wall is supported by a one-way vertical spanning prestressing cable system. The cable prestressing force is loaded on the transformation truss supported by V-shaped columns. The V-shaped column and its continuous collapse resistance were emphatically analyzed. Considering the effects of huge volume, the height and shape of the building, the wind environment around the building was complex, so the wind tunnel tests of the main structure and curtain wall were studied. The wind tunnel test results show that the maximum negative wind pressure on the roof of the enclosure structure is 1-8 times of the norm value, and the maximum positive wind pressure on the wall is 1-6 times of the norm value.
Keywords:Nanchang Greenland International Expo Center； cable curtain wall; V-shaped column; progressive collapse; wind tunnel test
作者簡介：孫大勇，學(xué)士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：sundy@shh.cadg.cn。
