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EXPERIMENTAL RESEARCH ON BENDING CAPACITIES OF LIGHT-GAUGE STEEL KEEL FIREPROOF FLOOR SLABS
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摘要: 以一种新型轻钢龙骨防火楼板为研究对象，对4个全比例尺寸的轻钢龙骨防火楼板试件进行竖向荷载作用下受力性能的试验研究，观察试件的受力破坏特点，研究其荷载-挠度曲线及荷载-应变曲线，分析其受弯承载力的各影响因素。提出了轻钢龙骨防火楼板的受弯承载力计算式及针对该楼板设计的改进建议。Abstract: Taking a new type of light-gauge steel keel fireproof floor slab as the research object, the experimental research on the mechanical properties of four full-scale light-gauge steel keel fireproof floor slab specimens under vertical load was carried out, and the damage characteristics of fireproof slabs were observed. The load-deflection curve and load-strain curve were used to analyze the influencing factors of the bending capacity. The calculation formula of the bending capacity of the light-gauge steel keel fireproof floor slab and the improvement suggestions for the slab design were proposed.
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Key words:
- cold-formed thin-walled steel /
- gypsum /
- phenolic foam board /
- fireproof floor /
- bending capacity
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