Effect of low cycle fatigue phenomenon on steel frames with prequalified end plate moment connections

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GERAMI MOHSEN; Zarei Amir hossein; Ghaderi Mohsen

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Paper Information

Journal: JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING Year:2019 | Volume:6 | Issue:Special Issue 3 (28) Page(s): 149-162

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Title

Effect of low cycle fatigue phenomenon on steel frames with prequalified end plate moment connections

Author(s)

GERAMI MOHSEN | Zarei Amir hossein | Ghaderi Mohsen | Issue Writer Certificate

Keywords

End plate connectionQ1

Moment connectionQ2

Low cycle fatigueQ1

Cumulative fatigueQ1

Steel frameQ2

earthquakeQ2

Abstract

The moment beam-to-column connections include those connections that can transfer the moment between the beam and the column. Bolted unstiffened and stiffened extended end-plate Moment connections are fromthis category. This type of connection, which was investigated after severedamage to connections in the Northridge earthquake, Due to properbehavior under cyclic loading, was introduced as one of the pre-qualifiedconnections of the AISC code and subsequently by the Iranian Code. Sincelow cyclic fatigue is another cause of failure in connections under the Northridge earthquake, it is necessary to study the fatigue behavior of thisype of connection under the effect of Low cycle fatigue. So far little studieshave been done on the effect of Low cycle fatigue on various types ofconnections, including End plate connections. In the present study, the S-N fatigue chart (Effective stress to the number of load cycles) that was usedto estimate the effect of high cycle fatigue was developed to the lowfatigue region for the End plate connections. Then, with using the S-N chart, the effect of Low cycle fatigue on a 12-story structure under the influence of various earthquake records was studied to investigate the effect of low-cycle fatigue on structures with end plate momentconnections. The analysis of steel structures showed that in end plate Moment connections at the plastic hinge position, the effect of the cumulative cyclic fatigue before the plasticization of the connection undersevere earthquakes is influential. Since the effects of fatigue are cumulative, it will be significant and destructive for End plate connections of buildings that have experienced several medium and large earthquakes.

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APA: Copy

GERAMI, MOHSEN, Zarei, Amir hossein, & Ghaderi, Mohsen. (2019). Effect of low cycle fatigue phenomenon on steel frames with prequalified end plate moment connections. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 6(Special Issue 3 (28) ), 149-162. SID. https://sid.ir/paper/401307/en

Vancouver: Copy

GERAMI MOHSEN, Zarei Amir hossein, Ghaderi Mohsen. Effect of low cycle fatigue phenomenon on steel frames with prequalified end plate moment connections. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2019;6(Special Issue 3 (28) ):149-162. Available from: https://sid.ir/paper/401307/en

IEEE: Copy

MOHSEN GERAMI, Amir hossein Zarei, and Mohsen Ghaderi, “Effect of low cycle fatigue phenomenon on steel frames with prequalified end plate moment connections,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 6, no. Special Issue 3 (28) , pp. 149–162, 2019, [Online]. Available: https://sid.ir/paper/401307/en

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