寿县合兴浅谈钢结构屋面的屋面板及檩条发布时间：2018-4-19 11:09:09 浏览次数:714
Design of roof panels and purlin is usually purlin distance from the deployment of purlin, purlin on the roof is equal span support, more than 15M span is more than a double slope, each slope roof is more than 7.5M. According to the purlin deployment, the roof panel is designed according to the 5 span beam in succession. The result is that the bending moment of the middle span in the end span of the roof panel is much larger than the middle span of the middle span. The line mounting of the purlin is based on the second support counterforce of the roof panel, and the second support reaction is the largest support in the plate of 5 strans. In this way, the purlin is designed by the reverse force. At this time, the purlin of the roof of the roof is filled with the function of the purlin, and the bearing capacity of the middle span purlin is abundant, so that it can not play a role.
For this purpose, the purlin is unequal span deployment, the purlin's deployment is narrowing at the end span of the roof panel and the distance of the middle span is narrowed, so that the end span of the roof is on the verge of the bending moment and the two ends of the bending moment. Or because the purlin unequal span deployment makes the back force observation of the roof panel be on the verge of the roof, it can fill and play the fragmentary data function of the roof. The retreating office uses the steel amount, and the cost is retreated. The amount of steel used in the normal engineering roofing is larger than that in the total steel consumption, because the solution is better. Purlin with unequal span deployment, purlin support deployed unequal distance, purlin rod length will be different, only need to be carefully installed, is satisfied with the design request.