拱型波纹屋盖风荷载数值模拟研究  

Numerical Stimulation Studies on Wind Load of the Arch Corrugated Roof

作　　者：张德生[1] 

机构地区：[1]嘉应学院土木工程学院,广东梅州514015

出　　处：《嘉应学院学报》2013年第8期44-50,共7页Journal of Jiaying University

基　　金：广东省自然科学基金项目(S2011010001679);梅州市科技计划项目

摘　　要：基于谐波叠加法的基本原理,结合快速傅立叶变换,利用MATLAB编写了拱型波纹屋盖多点互相关的脉动风速程序.程序运行结果表明,结构各点模拟脉动风速时程的功率谱密度函数与目标函数、风速时程的自相关函数与目标自相关函数较为一致;相邻两点之间距离越近,互相关性越强,反之,则越弱.该研究结果对进一步研究拱型波纹屋盖结构风致振动时域分析具有重要意义.The fluctuating velocity program about the correlativity of multiple dots in the structure of arch corrugated roof is written by using MATLAB based on the basic theory of harmony superposition method, combining with the fast Fourier transforms. The result of the program indicates that the power spectral density function and the objective function of the stimulating nodal fluctuating wind speed time series are comparatively consistent. Meanwhile, the auto- correlation function and objective auto - correlation function of the wind speed time series are also compara- tively consistent. The study also finds that the closer the distance between two adjacent dots is, the stronger their correlativity is. The result of this study has an important significance of the further study about the time domain a- nalysis on the wind vibration of the arch corrugated roof structure.

关 键 词：拱型波纹屋盖 风荷载 谐波叠加法 快速傅立叶变换 MATLAB 

分 类 号：TU392.5[建筑科学—结构工程]