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首页> 外文会议>EUR 21431; Final Conference of Cost Action C12; 20050120-22; Innsbruck(AT) >Flexural cyclic behaviour and low-cycle fatigue of cold-formed steel members
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Flexural cyclic behaviour and low-cycle fatigue of cold-formed steel members

机译：冷弯型钢构件的弯曲循环行为和低周疲劳

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The use of cold-formed thin-walled steel profiles in seismic structures is nowaday strongly penalized by code prescriptions, which impose for this kind of members a q-factor equal to 1, so that the design for the action of a severe earthquake must be carried out practically in the elastic field. On the other hand, some theoretical studies on the seismic performance of such structural systems gave encouraging results. For these reasons, a new experimental and theoretical research program on the behaviour of cold-formed members loaded by cyclic loads has been started by the authors. In this paper a brief presentation of the results obtained from tests in bending, under monotonic and cyclic load, on a number of unlipped channel beams, is given, a theoretical simulation of the flexural cyclic degrading behaviour is assessed and the collapse behaviour with reference to low-cycle fatigue resistance is analysed too.
机译：如今，通过代码规范对在地震结构中使用冷弯薄壁钢型材进行了严厉的惩罚，该规范为此类构件施加了等于1的q因子，因此必须针对大地震的设计进行设计。实际上是在弹性领域进行的。另一方面，对这种结构系统的抗震性能的一些理论研究给出了令人鼓舞的结果。由于这些原因，作者已经开始了一个新的实验和理论研究程序，该程序研究了循环载荷下冷弯构件的行为。在本文中，简要介绍了在单调和循环荷载作用下，在许多非唇形通道梁上进行弯曲试验时获得的结果，评估了挠曲循环降解行为的理论模拟，并参考了倒塌行为。还分析了低周疲劳性能。

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