In cold-formed steel structures, we need to open holes on flange and web of beams and columns for the purpose of getting through the pipeline.

在冷弯薄壁型钢结构中，为了降低层高而让管线从梁中通过，在梁和柱的腹板及翼缘中常需要开孔洞。

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Based on the experiments of G550 cold-formed thin-walled steel roof truss structures, an analysis model considering geometry and material non-linearity is established using general FEM software ANSYS.

基于已完成的G550冷弯薄壁型钢屋架结构承载力试验，采用通用有限元软件ANSYS，建立考虑材料和几何非线性的分析模型。

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AISI Specification have made relevant rules on web with openings, but Technical Code of Cold-Formed Thin-Wall Steel Structures(GB50018-2002) does not have the rules.

美国AISI规范中对特定条件下的带洞腹板做了规定，而我国《冷弯薄壁型钢技术规范》（GB50018-2002）对此尚无规定。

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