摘要
台风风场模拟是研究各类高耸构筑物、大跨度桥梁和大型空间结构风致破坏机理的重要基础.基于不随高度变化的台风功率谱、自回归法和竖向相关性简化表达式模拟了沿海地区的强台风风场模型;得出了给定平均风速条件下,不同高度处的脉动风风速时程曲线.结果表明,模拟谱的功率谱密度与目标谱较为一致,模拟风速可用于结构的风振响应分析.
Simulation of typhoon is an important pre-step for the wind-induced failure analysis for a variety of large-size constructions such as tall buildings, large-span bridges, and large-space structures. A power spectrum density （PSD） model of typhoon with constant altitude, the auto-regressive method and a simplified expression of vertical correlation are concurrently simulated and employed to model the strong typhoon wind field in coastal area. Giving an average wind speed, the fluctuating wind speed at different heights is simulated. Results show that the PSD of the simulated spectrum is well in agreement with that of the target spectrum. The proposed simulated wind speed is expected to use for predicting the structural wind-induced responses.
出处
《宁波大学学报（理工版）》
CAS
2014年第2期88-91,共4页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
浙江省教育厅科研项目(Y201326584)
宁波大学科研项目(XYL14010)
关键词
强台风
高耸结构
脉动风
风场模拟
自回归法
strong typhoon
high-rise structure
fluctuating wind
wind field simulation
auto-regressive method
