EFFECT OF STIFFENERS ON THE ANGLE OF INCLINATION IN STEEL PLATE SHEAR WALLS

Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

SEE07_093

تاریخ نمایه سازی: 29 آذر 1399

Abstract:

Steel plate shear walls (SPSW) are an efficient but largely underused building lateral force resisting system. The system comprises of a moment frame (the boundary frame) with slender steel web plates that are welded or bolted inside the boundary frame. The resulting structure is similar to a vertical plate girder. The system resists lateral load primarily through tension field action of the post -buckled web plate. The magnitude and orientation of this tension field is governed by the relative stiffness of the web plate and boundary frame. The 2010 Seismic Provisions currently require that the tension field inclination angle be either 40° or computed using a formula derived from elastic analysis. This paper presents a new relationship for the diagonal tension angle considering effect of stiffeners. It is demonstrated that the tension field inclination may move, from an initially low angle under an elastic post-buckled state, toward 45° as the plate is loaded plastically.

Keywords:

Steel Plate Shear Wall , Tension Field , Stiffener , Angle of Inclination , Principle of Least Work

Authors

Ahmad RAHMZADEH

Earthquake Engineering Graduate Student, School of Civil Engineering, College of Engineering, University of Tehran,Tehran, Iran

Mehdi GHASSEMIEH

Associate Professor, School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran