拱型波纹屋盖脉动风作用下应力风振系数研究

Studies on the Wind Vibration Coefficient of Stress of the Arch Corrugated Roof

为研究拱型波纹屋盖在脉动风作用下的应力风振系数,考虑不同跨度、支座、不同矢跨比对应力风振系数的影响,利用ANSYS有限元分析软件对18 m、30 m跨波纹拱进行水平及竖向脉动风作用下的风振响应分析,得到了结构在不同位置处节点的应力及应力风振系数.计算结果表明:波纹拱应力风振系数随着结构的跨度增大而增大,随着矢跨比的增加而增加,支座约束为固支波纹拱的风振系数小于铰支波纹拱.该结论为结构设计、施工及同类型大跨轻型屋盖的风致振动提供参考和借鉴.

In order to research the arch corrugated roof structure wind vibration coefficient of stress subjected to fluctuating wind load, we consider different span, bearing, rise - span ratio on the influence of wind vibration coefficient of stress. under horizontal The wind - induced and vertical average dynamic response of arch corrugated roof with 18m, 30m span was analyzed wind, fluctuating wind load by using the finite - element analysis software of ANSYS. And the node stress and wind vibration coefficient of stress at different location of structure was obtained. The calculation results showed that the wind vibration coefficient of stress increased with the increase of span and increased with the increase of rise - span ratio. The wind vibration coefficient of stress under fixed supported of arch corrugated roof was less than the hinge. The wind - induced vibration analysis results provided the reference for the structure and the same kind of large -span light roof design, construction.