某移动机库表面风场数值模拟  

Numerical Simulation of Wind Field on a Mobile Hangar

作　　者：郑欣豪 周凌 杨朝山 黄晓寒 任俊儒 戴睿熙 Zheng Xinhao;Zhou Ling;Yang Chaoshan;Huang Xiaohan;Ren Junru;Dai Ruixi(Army Logistics University,Chongqing 400000)

机构地区：[1]陆军勤务学院,重庆400000

出　　处：《粉煤灰综合利用》2018年第6期110-113,共4页Fly Ash Comprehensive Utilization

摘　　要：某大跨度机库采用索拱架式结构,整体跨度42 m,长70 m,由8榀标准的索拱架通过刚性系杆和斜向十字支撑连接组成,具有自重轻、刚度小,对风荷载敏感等特点。为了得到其表面风场,本文简要介绍了自然风特性,详细推导了基于AR模型模拟脉动风速的过程,并通过数值模拟计算了某索拱架式机库表面风场,最后自相关性分析和谱分析表明,模拟谱与目标谱(Davenport谱)吻合很好,结果有效。A large span hangar adopts cable arch structure,with an overall span of 42 meters and a length of 70 meters.It consists of 8 inch standard cable arches through rigid tie rods and diagonal cross support.It has light weight,low rigidity and wind.Load sensitive and so on.In order to obtain the surface wind field,this paper briefly introduces the natural wind characteristics,and deduces the process of simulating the pulsating wind speed based on the AR model.The surface wind field of a cable arch hangar is calculated by numerical simulation.Finally,the autocorrelation analysis and Spectral analysis shows that the simulated spectrum agrees well with the target spectrum (Davenport spectrum)and the results are valid.

关 键 词：AR法 结构风场 大跨度索拱结构 

分 类 号：TU311.4[建筑科学—结构工程]