摘要
目的模拟脉动风荷载,在时域内实现数值模拟建筑结构的内力分析和变形计算.方法采用Daven port风速谱并根据Shinozuka理论,应用简谐波叠加法分别模拟了脉动风速、脉动风压和脉动风荷载时程曲线.结果求出了该风谱的功率谱密度和相关函数,并分析了某12层框架结构的顶层位移和加速度反应.证明此方法高速有效,且符合工程精度的要求.结论理论值和实测值的比较结果表明简谐波叠加法是一种正确有效的风荷载分析方法,能够反映结构的基本动力特性,对高层建筑的风振控制有一定的应用价值.
Wind load simulation and the wind vibration responses of a structure by computer numerical simulation are put forward. The time history of pulse wind velocity and wind pressure on the structure has been simulation based on Davenport wind speed power spectrum and Shinozuka theory. Its power spectrum and the correlation function are calculated out. The wind vibration responses of a 12-story structure are calculated from this method. Comparing its power spectrum and the correlation function with the measurements in the practical test validates the efficiency of the simulation. The example of 12-story structure shows the value for the engineering.
出处
《沈阳建筑大学学报（自然科学版）》
EI
CAS
2005年第1期1-4,共4页
Journal of Shenyang Jianzhu University：Natural Science
基金
辽宁省自然科学基金项目(2001102003)
