冷弯薄壁檩条在檩条-覆板体系下的强度分析

Strength Analysis of Cold-Formed Thin-Walled Purlins Under the Purlin-Sheeting System

该文分析了冷弯薄壁檩条 覆板体系下的檩条强度问题,体系受向上的风荷载作用,檩条 覆板体系对檩条的约束作用采用两个弹簧:一个横向弹簧和一个扭转弹簧来代替.比较了覆板刚度和偏心距对C、Z形截面檩条荷载承载力的影响,给出了C、Z形截面檩条的最佳荷载作用点.

This paper presents an analysis model for cold-formed purlin-sheeting systems subjected to wind uplift loading in which the restraint of the sheeting to the purlin is taken into account by using two springs representing the translational and rotational restraints provided by the sheeting. The in-(fluences) of the sheeting stiffness and the eccentricity distance on the C and Z-section purlins (load-bearing) capacity are compared, and the best fixing position of the purlin and sheeting is given.