Experimental study of steel moment resisting frames with shear link

Mahmoudi, Farid; Dolatshahi, Kiarash M.; Mahsuli, Mojtaba; Nikoukalam, Mohammad T.; Shahmohammadi, Amir

doi:10.1016/j.jcsr.2018.11.027

Cited by 39 publications

(18 citation statements)

References 21 publications

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“…Using nonlinear and dynamic analyses the results indicated that equipped joints with friction connections exhibited satisfactory reduction of materials while observing the limit for drifts. Mahmoudi et al [14] studied a replicable beam in mid-span where shear fuse at the end of this portion dissipates energy by shear yielding which leads to prevention of flexural yielding at the beams ends by weakening the mid-span of the beam. This technology enables the design of tall buildings' beams with smaller depth where according to design codes the minimum span to depth ratio must be satisfied.…”

Section: Sn Applied Sciencesmentioning

confidence: 99%

FEMA P695 methodology for safety margin evaluation of steel moment resisting frames subjected to near-field and far-field records

2021

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This study presents the impact of near-field and far-field earthquakes on the seismic design of Intermediate Moment Resisting Frame (IMRF) and Special Moment Resisting Frame (SMRF) structures through FEMA (Federal Emergency Management Agency) P695 methodology to highlight the importance of probabilistic collapse as well as seismic performance factors of these structures. The purpose of this study is to investigate the collapse performance of steel intermediate and special moment resisting frame systems as the most common structural systems in urban areas in order to assess the seismic performance factors used for the design using nonlinear static and dynamic analysis methods. In this regard, as the representatives of low-rise to high-rise buildings, archetypes with 5-, 10- and 15- story of intermediate and special moment resisting frames are designed and then the nonlinear models are developed in OpenSees software. Nonlinear static analyses are performed to assess the overstrength and ductility of these systems. The effects of near-field and far-field ground motions on these frames are investigated through incremental dynamic analysis. These analyses are performed with 22 far-field and 20 near-field ground motion records using FEMA P695 methodology. The results show that near-field earthquakes have serious impacts on the collapse probability of structures. The superiority of special moment resisting frame over intermediate moment resisting frame is quantified in terms of safety margin and median collapse capacity under both near-field and far-field earthquakes. Finally, the results indicate that the response modification factors introduced in seismic design code are acceptable for intermediate moment resisting frame and special moment resisting frame under far-field ground motions. However, in the near-field sites while SMRF system meets the requirements of FEMA P695 methodology, the IMRF system does not satisfy these criteria.

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Section: Sn Applied Sciencesmentioning

confidence: 99%

FEMA P695 methodology for safety margin evaluation of steel moment resisting frames subjected to near-field and far-field records

2021

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“…2 The idealization of T-stubs These connections are generally utilized in moment resisting frames as a beam-to-column connection. Moreover, the end-plated connections are also preferred in replaceable fuses in both moment resisting frames [6][7][8][9] and eccentrically braced frames [10][11][12][13]. The thickness of the end-plate plays a significant role in the weight of a member.…”

Section: Fig 1 Extended End-plated Connectionsmentioning

confidence: 99%

Investigation of the effects of bolt diameter and end-plate thickness on the capacity and failure modes of end-plated beam-to-column connections

Özkılıç¹

2021

Res. Eng. Struct. Mater.

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End-plated connections are frequently preferred in beam-to-column connections due to their advantages of high quality and fast assembly. The capacity of the end-plated connections depends on many parameters including the thickness of end-plate and bolt diameter. A comprehensive numerical parametric study was conducted in order to investigate the effects of these parameters on the capacity of the end-plated connections using the finite element tool, ABAQUS. The results of the numerical study were compared with the prediction of Eurocode provision in terms of the capacity and failure mode. The results showed that Eurocode accurately captures the failure modes and predicts the capacity of the connection except for thin plates with high accuracy. However, Eurocode provision significantly underestimated the capacity of the thin-plated extended end-plated connections.

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“…However, torch cutting and site welding need to be applied to replace the damaged beam segment with the new ones. These operations bring about costly solutions, time-consuming and poor quality (Mahmoudi et al, 2019;Shen et al, 2011). It is crucial to develop new strategies to reduce the repair and retro tting costs as well as reoccupy damaged buildings as soon as possible (Piluso et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Numerical Validation on Noval Replaceable Reduced Beam Section Connections for Moment-Resisting Frames

Özkılıç

Bozkurt

2022

Preprint

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After a severe seismic activation, the buildings designed based on seismic specifications are expected to have damages without any local and global collapse. The key parameters that influence re-occupancy of the damaged buildings are workmanship cost and time. In order to circumvent shortcomings of these crucial parameters, replaceable fuse members with high energy dissipation capacity have been developed up to date. Moment resisting frames (MRFs) are one of the most preferred lateral load resisting systems in terms of architectural versatility and high energy dissipation capacity. Even though many beam-to-column connection details have been investigated over the years, none of them has addressed assembly difficulties when replacing the damaged fuse members under the residual drift ratio occurred after an earthquake. Therefore, this study presents replaceable reduced beam sections with connection detail for MRFs under residual drift. The proposed detail includes end-plated mid-spliced reduced beam sections. Pursuant to this goal, the proposed detail has been investigated under cyclic loading protocol required by AISC 341-16 by using ABAQUS finite element program. Seismic response of the proposed connection detail was compared from PEEQ and Rupture Index standpoint. The obtained findings indicate that the proposed mid-spliced replaceable reduced beam section satisfies all requirements mandated by AISC 341-16.

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Experimental study of steel moment resisting frames with shear link

Cited by 39 publications

References 21 publications

FEMA P695 methodology for safety margin evaluation of steel moment resisting frames subjected to near-field and far-field records

FEMA P695 methodology for safety margin evaluation of steel moment resisting frames subjected to near-field and far-field records

Investigation of the effects of bolt diameter and end-plate thickness on the capacity and failure modes of end-plated beam-to-column connections

Numerical Validation on Noval Replaceable Reduced Beam Section Connections for Moment-Resisting Frames

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