purline

Purline design of the roof in the Guangdong Sciences Center

广东科学中心屋面檩条设计

Design method of purline subjected to wind suction

檩条在风吸力作用下的设计方法

The load is borne mainly by the roofing board and transfer further to purline .

外部荷载主要由屋面板承担，进而传递到檩条上。

Roof purline is adopted with cold-bending and thin-wall steel ( Q345 ), knee bracing , roof horizontal bracing and purline drawn rod Q235 .

本工程屋面檩条采用高冷弯薄壁型钢材质Q345，隅撑，屋面水平支撑，檩条拉条材质均为Q235。

The purline is often designed as a simple beam , and only it ′ s strength needs to be calculated , if the roof panel can prevent it ′ s lateral buckling and torsion .

檩条一般采用简支梁，假定屋面板能阻止其侧向失稳和扭转，则只计算其强度。

This paper introduces the concept of purline designing and expert system . On the basis of engineering practice , the cold formed steel ( full-web type ) purline expert system is implemented with visual basic . The paper gives the now chart of the program .

介绍檩条设计及专家系统概况，结合工程实际，用Visualbasic完成冷弯型钢实腹式檩条设计专家系统的实现，给出了程序流程图，结合数据对比，效果良好。