基于AR模型的环形空腹索桁结构风振系数研究  

Study on wind vibration coefficient of annular open-web cable-truss structures based on AR model

作　　者：张良尘 吕令毅[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《工程建设》2018年第2期1-5,共5页Engineering Construction

摘　　要：运用奇异值分解技术,确定了环形空腹索桁结构的预应力和初始构型。通过自回归模型得到结构上的风荷载时程,在此基础上研究了环形空腹索桁结构的位移风振系数。结果表明,该结构的位移风振系数介于1.66~1.95之间。In this paper,the singular value decomposition is employed to determine the pre-stress and the original configuration of the annular open-web cable-truss structure. The wind load time-history of the structure was obtained by using auto-regressive model,based on which,the displacement wind vibration coefficient of this structure is studied. The result indicates that the wind vibration coefficient of this structure is from 1. 66 to 1. 95.

关 键 词：索桁结构 预应力 自回归模型 风振系数 

分 类 号：TU399[建筑科学—结构工程]