基于风速时程的体育场挑篷结构风振响应分析  

Analysis of wind-induced responses of canopy stadium structures based on time-history of wind velocity

作　　者：薛素铎[1] 宋延杰[1] 李雄彦[1] 

机构地区：[1]北京工业大学建筑工程学院

出　　处：《地震工程与工程振动》2007年第5期61-65,共5页Earthquake Engineering and Engineering Dynamics

基　　金：北京市属市管高等学校人才强教计划项目(05004790200701)

摘　　要：依据自回归(AR)法,确立了考虑风速时程空间相关性的模拟方法,并利用Matlab语言编制了相应的程序。基于上述方法,模拟了某体育场挑篷结构的风速时程,并对所得风速时程离散值进行数理统计分析,结果表明模拟谱与目标谱吻合较好。根据结构风振响应分析的需要,将模拟风速转变为风荷载对结构进行时程分析,获得了结构风振响应,为结构抗风设计提供依据。计算表明,基于风速时程的结构风振响应分析方法可有效分析体育场挑篷的风振响应。Based on the auto-regressive method, a way to simulate the time-history of wind velocity considering spatial correlations is found, and a simulation program is developed as well. The time-history of wind velocity for a canopy structure is simulated by the developed method. By statistical analysis, it is shown that a good agreement is reached between the simulated spectrum and the target spectrum. In order to analyze the wind-induced responses of the structure, the time-history of wind velocity is transformed to the time-history of wind load, and then the structural responses needed in design are obtained by time-history analysis. The studies in this paper show that the developed method is effective for the analysis of wind-induced responses of canopy structures.

关 键 词：挑篷结构 风速时程 风振响应 

分 类 号：P315.966[天文地球—地震学] TG311.3[天文地球—固体地球物理学]