摘要
文章在对风灾现场的实地调查及参照现行荷载规范风荷载的计算方法,分析了影响站台雨棚抗台风性能的主要因素,并用风洞试验进行模拟,通过对风向角、雨棚曲面上各点的体型系数分布状态的研究,揭示雨棚在台风中的受力特点,验证台风中的雨棚不会发生驰振和颤振效应,提出站台雨棚抗台风设计应采用多级设防标准,建议采用"三水准设防和两阶段设计"进行抗台风设计,以确保结构安全。
In this paper, based on investigation of wind disaster site and according to calculation method of wind load in the current load specification, main factors affecting the typhoon-resistant performance of the platform canopy is analyzed. The forcing characteristics of the canopy in the typhoon is described in the study on wind direction angle and shape factor distribution state at different locations on the curved surface by wind tunnel simulation test. This study has proven that galloping and flutter effects will not occur for canopy in the typhoon. It is proposed that typhoon-resistant design of the canopy shall adopt the muhi-level fortification standard. It is suggested to adopt typhoon-resistant design of ＂three- level standard and two-stage design＂ so as to ensure the structural safety.
出处
《高速铁路技术》
2012年第5期27-32,共6页
High Speed Railway Technology
关键词
台风地区
雨棚抗风
机理分析
三水准设防
typhoon affected area
wind resistance of canopy
mechanical analysis
three-level fortification standard
