FULL – SCALE TESTS ON COLD-FORMED STEEL PITCHED-ROOF PORTAL FRAMES WITH BOLTED JOINTS
FULL – SCALE TESTS ON COLD-FORMED STEEL PITCHED-ROOF PORTAL FRAMES WITH BOLTED JOINTS
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带螺栓接头的冷弯钢斜屋顶门式框架的全面测试
DOI：
10.18057/ijasc.2009.5.2.7
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发表时间：
2009
影响因子：
6.4
通讯作者：
Z. Nagy
中科院分区：
文献类型：
--
作者：
D. Dubina;A. Stratan;Z. Nagy
本文总结了一个实验项目的结果进行，以评估性能的斜屋顶冷弯型钢门式刚架背靠背槽形截面和螺栓连接。对三种不同的屋脊和屋檐节点进行了试验。观察节点的性能和破坏机制，以评估其刚度，强度和延性。在冷弯构件之间的连接中，腹板中有螺栓，只会导致连接弯矩承载力的降低和腹板过早屈曲。采用构件法计算节点的刚度和弯矩承载力，为框架的分析和设计提供依据。通过考虑三种连接模型，分析了节点特性对框架整体结构在横向（地震）荷载作用下响应的影响。对冷弯薄壁斜屋顶门式刚架进行了足尺试验。本文介绍了实验观察和比较框架响应的数值预测。
The paper summarises the results of an experimental program carried out in order to evaluate the performance of pitched roof cold-formed steel portal frames of back-to-back channel sections and bolted joints. Three different configurations of ridge and eaves joints were tested. The behaviour and failure mechanisms of joints were observed in order to evaluate their stiffness, strength and ductility. Joints between cold-formed members with bolts in the web only result in a reduction of joint moment capacity and premature web buckling. The component method was applied in order to characterise the joint stiffness and moment capacity for the purpose of frame analysis and design. The influence of joints characteristics on the global frame response under lateral (seismic) loads was analysed by considering three connection models. Full-scale tests were performed on cold-formed pitched-roof portal frames. The paper presents experimental observations and comparison to numerical predictions of frame response.