节点文献
M.Shinozuka方法在风荷载模拟中的应用
Application of M.Shinozuka method to wind load simulation
【摘要】 通过分析现有的风荷载数值模拟方法,认为M.Shinozuka方法得到的脉动风荷载样本的统计特征值能较好的符合理论值。系统阐述了这种方法的分析过程,其中涉及到脉动风压规格化功率谱的推导以及脉动风荷载功率谱的计算。采用MATLAB可以方便有效的进行编程,其中的矩阵函数能够容易的实现Cholesky分解以及随机数的求取等。
【Abstract】 The sample’s statistical characteristics of impulsive wind load can well accord with the theoretical value by M.Shinozuka method,through analyzing the existing numerical simulation methods of wind load.Relating to the deduction of wind pressure uniform spectrum and calculation of wind load spectrum,analytical progress of M.Shinozuka method is systemically discussed.The program can be realized by MATLAB conveniently and effectively,in which Cholesky decomposition and random numbers can be easily acquired.
【关键词】 风荷载模拟;
谐波叠加法;
风速功率谱;
风压功率谱;
时程样本;
【Key words】 wind load simulation; spectral representation method; wind speed spectrum; wind pressure spectrum; time histories sample;
【Key words】 wind load simulation; spectral representation method; wind speed spectrum; wind pressure spectrum; time histories sample;
【基金】 国家自然科学基金(50375124)资助项目
- 【文献出处】 强度与环境 ,Structure & Environment Engineering , 编辑部邮箱 ,2007年05期
- 【分类号】TU312.1
- 【被引频次】27
- 【下载频次】253