风吸作用下网架结构考虑屋面构件参与工作的可行性研究

FEASIBILITY STUDY ON SPACE FRAME CONSIDERING THE PARTICIPATION OF ROOF ELEMENTS IN THE WORK UNDER WIND SUCTION EFFECT

为研究考虑屋面构件参与网架结构共同工作抵抗风吸作用的可行性,对各类构件的连接进行讨论,建立考虑檩条、屋面板等屋面构件的精细化有限元分析整体模型。结合某实际工程,通过分析比较檩条与屋面板对于网架结构变形及杆件受力的影响,得出在风吸作用下,考虑屋面构件在整体结构中参与工作是可行的。

There is a lack of research on how roof elements participate in the work with the space frame together to resist wind suction effect. This paper discussed all kinds of connections of every elements,and then established a finite element analytical model of the integrated structure considering roof elements such as purlin and roof panel.Combined with a practical project,by analysing and comparing the influence on displacements of structure and forces of bars from purlin and roof panel,it could be drawn a conclusion that under wind suction effect,considering the participation of roof elements in the work with space frame together was feasible. At the same time it was also discussed the problem that a special measure should be taken for a cantilevered end.