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Experimental study on T-stubs connected by thread-fixed one-side bolts under cyclic load
Journal of Constructional Steel Research ( IF 4.1 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.jcsr.2020.106050
Tuoya Wulan , Qijie Ma , Zhenhua Liu , Mei Liu , Jie Song , Junfeng Cai , Peijun Wang

Abstract Experimental studies on behavior of T-stubs connected using thread-fixed one-side bolts (TFOSBs) under monotonic and cyclic loads were presented. Three failure modes, which were the complete flange yielding failure, the bolt failure, and the flange yielding accompanied by hole thread failure, were observed in both tests. Effects of the cyclic load on the behavior of T-stubs were discussed from aspects of the deformation, the load transfer mechanism, the stiffness degradation and the tension yield strength. Compared to the monotonic tests, the cyclic load caused stiffness degradation and made threads on the bolt hole wall become more vulnerable to fail. In addition, comparisons showed that available design methods applied to predict the behavior of T-stubs under monotonic load also were applicable to predict that under cyclic load.

中文翻译:

单面螺纹螺栓连接T型柱在循环荷载作用下的试验研究

摘要 介绍了在单调和循环载荷下使用螺纹固定单侧​​螺栓 (TFOSB) 连接的 T 形短柱的行为的实验研究。在两个试验中均观察到三种失效模式,即完全法兰屈服失效、螺栓失效和法兰屈服伴随孔螺纹失效。从变形、载荷传递机制、刚度退化和拉伸屈服强度等方面讨论了循环载荷对T型桩性能的影响。与单调试验相比,循环载荷导致刚度下降,并使螺栓孔壁上的螺纹更容易失效。此外,比较表明,可用于预测单调负载下 T 型桩行为的可用设计方法也适用于预测循环负载下的行为。
更新日期:2020-06-01
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