【摘要】 随着结构的大型化、复杂化,对于风荷载更加敏感,风荷载常常起主要甚至决定作用。时域分析法是对结构进行抗风分析的较好方法,而时域分析首先要有时程样本,利用已知的频域信息通过计算机数值模拟重现时程样本是比较好的解决办法。本文利用谐波叠加法模拟了风速时程样本。通过算例表明,该方法模拟精度较高。另外对部分参数的合理选取进行了讨论,并给出了取值的建议。更多还原

【Abstract】 Along with engineering structures becoming larger and more complex,buildings get more sensitive to wind load,which usually plays the primary and even the crucial role.Time domain analysis is regard as one of the better methods to research the wind induced dynamic response.Samples of wind velocity histories are necessary when time domain analysis is conducted,so reproducing samples of wind velocity histories by computer numerical simulation utilizing known frequency domain information is a good method for solving the problem.In the paper,the harmony superposition method is used to simulate the samples of wind velocity histories,and has been proved to be availability by an example.In addition,some parameters are discussed and their rational values are recommended..更多还原