钢檩条的形式、受力、特点及适用范围
Form, stress, characteristics and application scope of steel purlin
钢檩条经热卷板冷弯加工而成，壁薄自重轻，截面性能优良，强度高，材质为Q195-345。常见的钢檩条有Z型钢檩条和C型钢檩条。钢檩条是屋盖结构体系中次要的承重构件，它将屋面荷载传递到钢架。
The steel purlin is processed by cold bending of hot rolling plate, with
thin wall and light self weight, excellent section performance and high
strength, and the material is q195-345. The common steel purlins are
Z-shaped steel purlins and C-shaped steel purlins. Steel purlin is the
secondary load-bearing component in the roof structure system, which
transfers the roof load to the steel frame.
钢檩条由于冷弯薄壁型钢在室内温度下成型，材料将产生冷弯效应。
Because the cold-formed thin-walled steel purlin is formed under indoor
temperature, the material will produce cold bending effect.
适用于钢结构工程的屋面和墙梁等各个方面。说到拉条一般是指拉结钢檩条的圆钢，说白了就是粗钢筋，也是为了增强檩条的稳定性，使檩条在一定的外力作用下不容易失稳破坏。檩条的截面形式一般有H型钢、C形、Z形等，作用是减小屋面板的跨度并固定屋面板。
It is applicable to all aspects of steel structure engineering such as
roof and wall beam. When it comes to brace, it generally refers to the
round steel of tie steel purlin. To put it bluntly, it is the coarse
steel bar. It is also to enhance the stability of the purlin, so that it
is not easy to lose stability and damage under certain external force.
Purlins are generally H-shaped steel, C-shaped and Z-shaped sections,
which are used to reduce the span of the roof panel and fix the roof
panel.