摘要
基于线性自回归模型法,确定了随时间和高度变化的脉动风模拟方法,编制了瞬时风速和风荷载模拟程序。将此方法应用到斜拉索结构,对苏通大桥Z34号拉索表面的风速、风荷载进行模拟。对所得脉动风时程进行谱分析和数理统计分析。结果表明,模拟点处模拟谱与目标谱吻合较好,证明了模拟结果的准确性。
Based on a linear self-regressive model a simulation method for fluctuating wind changing with time and height was determined,simulation algorithms for instantaneous wind speed and wind load were made.The method was extended to a cable-stayed structure,wind speed and wind pressure of Z34 cable on the SU-TONG stayed cable bridge were simulated.The fluctuating wind time histories obtained were analyzed with spectral analysis and mathematical statistics.The results showed that the simulated spectrum is in good agreement with the target spectrum and the simulations are correct.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第7期210-212,共3页
Journal of Vibration and Shock
关键词
斜拉索
风速时程
风压时程
功率谱密度
stayed cable
wind speed time series
wind pressure time series
power spectral density
