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APPLICATION RESEARCH ON THE SNOW LOAD VALUE OF THE NEW LOAD CODE IN THE PURLIN DESIGN OF LIGHT-WEIGHT STEEL STRUCTURE WITH PORTAL FRAME
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摘要: 门式刚架轻钢结构屋面檩条是一种雪荷载敏感构件，GB 500092012《建筑荷载设计规范》对于雪荷载取值有了更明确、细致的规定。通过新、旧荷载规范的对比分析，阐明门式刚架轻钢结构屋面檩条设计中，新荷载规范关于基本雪压取值和屋面积雪分布系数的规定和特点，总结轻钢屋面檩条抗雪荷载设计的要点，并通过具体的雪致事故案例分析验证新荷载规范中雪荷载取值对于檩条设计的适用性。Abstract: The roof purlin of a light-weight steel structure with portal frame is a kind of snow load sensitive component.The Load Code for the Design of Building Structures(GB 500092012) has more explicit and detailed provisions for the value of snow load.Through the comparison and analysis of the new load code and the old load code, the rules and characteristics of the new load code about basic snow load values and roofing snow distribution coefficients in the design of the roof purlin of light-weight steel structure with portal frame were clarified, and the main points of the anti-snow load design of the purlin were summarized.Finally the applicability of the snow load value in the new load code for purlin design was verified through the analysis of a specific snow-caused accident.
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