轻钢龙骨复合保温外墙板抗弯性能研究

Study on bending performance of light steel keel composite thermal insulation exterior wall panel

为了研究轻钢龙骨复合保温外墙板的抗弯性能,采用有限元分析软件ABAQUS对墙板进行了模拟分析,并与已有研究进行对比。研究了轻钢龙骨和覆面板等参数对墙板抗弯性能的影响,并对比了风荷载下墙板的正常使用情况。基于装配式钢结构建筑对外墙板的性能要求,提出了一种由轻钢龙骨、覆面板、保温层和防护层组成的轻钢龙骨复合保温外墙板。研究表明:该墙板的整体受力性能较好,其中增加轻钢龙骨腹板高度对墙板影响最显著,与龙骨腹板高度为100 mm时相比,高度为120、150、180 mm时墙板屈服荷载提高了39.31%、71.92%和101.3%,极限荷载提高了42.48%、72.9%、104.53%,有无龙骨加强肋几乎不影响墙板的抗弯性能。

In order to study the flexural performance of light steel keel composite insulated exterior wall panels,the wall panels were simulated using the finite element analysis software ABAQUS and compared with existing studies.The effects of changes in parameters such as light steel keel and cladding panels on the flexural performance of the wall panels were investigated,and the normal use of the wall panels under wind load was compared.Based on the performance requirements of external wall panels for assembled steel structure buildings,a light steel keel composite thermal insulation external wall panel composed of light steel keel,cladding panel,thermal insulation layer and protective layer is proposed.The research results show that the overall stress performance of the wall panel is good,in which increasing the height of light steel keel web has the most significant effect on the wall panel,the yield load of the wall panel with the height of 120,150 and 180 mm light steel keel web is increased by 39.31%,71.92%and 101.3%respectively compared to the height of 100 mm keel web.The ultimate loads were 42.48%,72.9%and 104.53%higher than those of 100 mm keel web height,and the flexural performance of the wall panels was hardly affected by the presence or absence of keel reinforcement ribs.