- 摘 要
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［摘要］采用數(shù)值模擬方法，對新廣州火車站雨棚擋雨板結(jié)構(gòu)進行了方案優(yōu)化設(shè)計研究，以減小結(jié)構(gòu)風(fēng)荷載。數(shù)值模擬顯示，擋雨板的位置若進行微調(diào)，承受的風(fēng)荷載可顯著降低，從而在不增加任何投入的前提下，提高結(jié)構(gòu)的抗風(fēng)安全性。研究還表明，通過建立適當(dāng)?shù)臄?shù)值風(fēng)洞模型，不僅可獲得可信的結(jié)果，而且可從流動本身進行機理解釋，數(shù)值模擬方法是進行此類結(jié)構(gòu)風(fēng)工程優(yōu)化設(shè)計研究的有力工具。
［關(guān)鍵詞］大跨屋蓋結(jié)構(gòu); 風(fēng)荷載; 數(shù)值模擬; 優(yōu)化設(shè)計
中圖分類號：TU312.1，TU208.5 文獻標(biāo)識碼：A文章編號：1002-848X(2011)11-0137-04
Optimization design research on wind loads of the baffle structure of new Guangzhou Railway Station
Yang Yi1, Jin Xinyang1, Yang Liguo1, Sheng Ping2(1 CABR Technology Co., Ltd., China Academy of Building Research, Beijing 100013, China;2 Beijing Institute of Architectural Design, Beijing 100045, China)
Abstract: The optimization design of the canopy of new Guangzhou Railway Station was numerically conducted from the viewpoint of reducing its wind loads. Numerical results show that the wind loads could be significantly reduced only if the arrangement of the serials of baffles is slightly adjusted. Therefore, the wind-resistant safety of this structure could be improved without any additional measures. Through the research, it concludes that not only the reliable results could be obtained, but also the mechanism behind the phenomenon could be explained through appropriate numerical modeling. Numerical simulation is a powerful tool for wind engineering optimization.
Keywords: large-span roof structures; wind loads; numerical simulation; optimization design
*國家自然科學(xué)基金（50708014，51178441）。
作者簡介：楊易（1975-），男，副研究員，博士，研究方向：計算風(fēng)工程，Email：yangyi@cabrtech.com。
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