- 摘 要
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（美國藍湖國際公司，北京 100037）
［摘要］迪拜梅丹賽馬場是為2010年世界賽馬會準備的國際性大型體育設(shè)施。該結(jié)構(gòu)屋頂鋼結(jié)構(gòu)重量達1萬多t，懸挑長度接近100m，是世界大型的懸挑結(jié)構(gòu)之一。屋頂內(nèi)部設(shè)有大型豪華旋轉(zhuǎn)餐廳和貴賓看臺，為了保證結(jié)構(gòu)在大風(fēng)工況下的舒適度，選用了18套水平、18套垂直TMD減振系統(tǒng)，分別控制結(jié)構(gòu)的水平和豎向振動。完整介紹了該TMD系統(tǒng)風(fēng)振控制的設(shè)計和實現(xiàn)過程，采用SAP2000軟件建模，模擬人工風(fēng)壓時程進行結(jié)構(gòu)振動分析。對TMD系統(tǒng)進行參數(shù)計算、優(yōu)化、分析、設(shè)計、出圖、加工、安裝、測試和調(diào)節(jié)。結(jié)果表明，以100年為風(fēng)荷載重現(xiàn)期，TMD系統(tǒng)使屋架結(jié)構(gòu)水平、豎直振動均有明顯的減小，TMD的頻率、阻尼系數(shù)和質(zhì)量塊加工均達到了設(shè)計需求。
［關(guān)鍵詞］調(diào)諧質(zhì)量阻尼器；風(fēng)時程分析；Davenport功率譜
中圖分類號：TU352,TU391文獻標識碼：A文章編號：1002-848X(2012)03-0049-05
Tune mass damper system for roof wind control of Meydan Racecourse Stadium in Dubai
Chen Yongqi，Cao Tiezhu (Blue Lake International Inc. USA, Beijing 100037, China)
Abstract:The nearly 100 meters long and 10 000 tons cantilever roof with luxurious revolving restaurant and VIP grandstands are installed in Dubai Meydan Racecourse Stadium, which is one of the biggest cantilever structure in the world. The 18 vertical and 18 lateral TMDs are used to control the vibration induced by the wind load in the two directions. The model is developed in SAP2000 program, in which an artificial wind time histories were implemented to represent the wind load with a recurrence interval of 100 years. The parameter calculation, optimization, analysis, design, drawing, fabrication, installment, test and adjustment of the TMD system were presented. The results demonstrate a substantial reduction of the vertical and lateral wind vibration of the roof with the application of TMD in the two directions. The requirements for the frequency, coefficient of damping and fabrication of mass in the design are satisfied.
Keywords:tuned mass damper; wind time-history analysis; Davenport power spectrum
作者簡介：陳永祁，博士，高級工程師，Email：info@bluelakeint.com。
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