Extended Abstract Template for Amirkabir Journal of Science and Research

Document Type : Research Article

Authors

1 Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Assistant Professor, Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract

Steel moment frame system is one of the conventional and practical systems in bearing lateral loads that is used individually or in combination with other systems in seismic areas and tall structures. The joints are The most important members of a moment frame system and The function of the connection varies according to the ductility of the moment frames. Therefore, research on the performance of these connections in steel structures is of particular importance, because low accuracy in its design and execution, in addition to the failure of the connection, will cause high damage to the entire structure. Today, the American Institute of Steel Construction (AISC) and the Iranian National Building Code introduce patterns as pre-qualified acquisitions. Over the course of three decades, several studies have been conducted several times on steel flexural joints with side stiffeners. On the other hand, considering that fragility curves are a suitable tool for diagnosing vulnerability. This article tries to examine the adequacy of the steel moment frame using side stiffener connection and pre-qualified WUF-W connection and providing a fragility curve then comparing them with each other. The result shows that the structure is less likely to fail using a steel moment connection with side stiffener instead of pre-approved WUF-W connection.

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[1] N.E.Shanmugam, L.C.Ting, S.L.Lee, Behaviour of I-Beam to Box-Column Connections ,Stiffened Externally and Subjected to Fluctuating Loads, J. Construct. Steel Research,  (1991) 129-148.
[2] K.-J. Shin, Y.-J. Kim, Y.-S. Oh, T.-S. Moon, Behavior of welded CFT column to H-beam connections with external Stiffener, Engineering Structures, 26 (2004) 1877–1887.
[3] A. Deylami, M.R. Shiravand, moment connection of steel BUILT-UP column using side plates, Advances in Steel Structures, 1 (2005).
[4] A. Deylami, M.R. Shiravand, the exprimental study on built-up column seismic resistant moment connections using side plates, World Conference on Earthquake Engineering,  (2008).
[5] M.S. Ghobadi, M. Ghassemieh, A. Mazroi, A. Abolmaali, Seismic performance of ductile welded connections using T-stiffener, Journal of Constructional Steel Research,  (2009) 766-775.
[6] A. Deylami, M. Salami, Retrofitting of Moment Connection of Double-I Built-Up Columns using Trapezoidal Stiffeners, Procedia Engineering,  (2011) 2544–2551.
[7] M.Raftari, R.Mahjoub, Evaluation of indicators of weld and cyclic response of steel Moment Frame Connection Using Side stiffener Plates, AUT J.Civil Eng, 1 (2017) 57_76.
[8] FEMA-350 Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings, in:  Report No. 350, Washington DC: Federal Emergency Management Agency, 2000.
[9] A. Rezaeei, S. Mahjoubi, Probabilistic comparison of performance with RBS connection With incremental dynamic analysis, 2019 (in Persian).
[10] M.R. Shiravand, Reinforcement and correction of bending behavior of beam to double column using side stiffener, PhD dissertation Amirkabir University, 2010  (in Persian).
[11] ANSI/AISC 341 Seismic Provisions for Structural Steel Buildings, in, Chicago: American Institute of Steel Construction, 2010.
[12] ANSI/AISC 358 Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications, in, Chicago: American Institute of Steel Construction, 2010.
[13] ANSI/AISC 360, Specification for Structural Steel Buildings, in, Chicago: American Institute of Steel Construction, 2010.
[14] NEHRP, Guidelines for Nonlinear Structural Analysis for Design of Buildings, in:  NIST GCR 17-917-46v2, Applied Technology Council Report (NIST, 2017), 2017.
[15] FEMA-356 Prestandard and Commentary for the Seismic Rehabilitation of Buildings, in:  Report No. 356, Washington DC: Federal Emergency Management Agency, 2000.