【作者】 曾常阳；

【导师】 舒兴平；

【作者基本信息】 湖南大学 ， 结构工程， 2002， 硕士

【摘要】 由于具有良好的截面性能以及屋面板提供了稳定支撑作用，冷弯型钢檩条具有较高的承载能力。四十年来，屋面板檩条系统得到了大量的理论和试验研究，但由于该系统的复杂性导致现在还难以得出完善通用的设计方法。 本文对蒙皮支撑简支檩条在风吸力作用下的性能进行了理论分析和试验研究。把试验和理论计算结果与门式刚架规程、澳洲冷弯型钢结构规范及设计手册的计算结果进行了比较。提出了檩条在风吸力作用下的稳定计算的建议。研究成果有益于今后进一步改进和简化设计方法。 理论分析忽略变形后截面畸变，采用能量法，推导出檩条的位移、承载力的计算公式。试验和规范计算结果表明本文理论有很好的正确性。进行面积约28m~2的足尺模型的承载力试验时，同时对蒙皮支撑的檩条进行了抗扭刚度试验，为今后同类檩条设计过程中扭转刚度的取值提供了参考。 本文理论和试验结果对于今后规范的修订有一定的参考价值，对于试验所采用的BHP钢品也提供了推广应用的理论和试验依据。更多还原

【Abstract】 Postgraduate Zeng ChangyangSupervisor Assoc.Prof. Shu XingpingCold-formed purlins have a high load carrying capacity because of their optimized cross-section and the stabilizing effect of the sheeting. The purlin-sheeting have been the subject of numerous theoretical and experimental investigations over the past four decades, but the complexity of the systems has led to great difficulty in developing a perfect and general model.The theoretical analysis and experimental research on Behavior of simply supported purlins which screw-connected to corrugated sheeting was conducted under wind uplift loading. The stability bearing capacity of purlin was calculated by formulas of two criterion and some design manual. Some comments on the design of purlin are proposed after comparing the results, including the investigation result of this paper. The conclusions will improve and simplify the design methods in the future.r The theoretical analysis ignored the distortion of the section and worked out theequations of displacement, loading capacity by means of energy method. The equations provide accurate by the results of tests and computation. During the full scale model comprising an area of 28 m2 not only the conventional loading capacity tests were taken but also the rotational restraint was tested, which will provide valuable data to some similar structure members design.The results of the experiments are willing to be a reference to the future modification of specifications. This paper is also written to provide some evidence for the application of certain BHP steel products.更多还原