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http://dx.doi.org/10.12989/scs.2017.23.4.421

Increasing plastic hinge length using two pipes in a proposed web reduced beam section, an experimental and numerical study  

Zahrai, Seyed M. (School of Civil Engineering, College of Engineering, The University of Tehran)
Mirghaderi, Seyed R. (School of Civil Engineering, College of Engineering, The University of Tehran)
Saleh, Aboozar (Department of Civil Engineering, Islamic Azad University Professor Hesabi Branch)
Publication Information
Steel and Composite Structures / v.23, no.4, 2017 , pp. 421-433 More about this Journal
Abstract
Experimental and numerical studies of a newly developed Reduced Beam Section (RBS) connection, called Tubular Web RBS connection (TW-RBS) have been recently conducted. This paper presents experimental and numerical results of extending the plastic hinge length on the beam flange to increase energy dissipation of a proposed version of the TW-RBS connection with two pipes, (TW-RBS(II)), made by replacing a part of flat web with two steel tubular web at the desirable location of the beam plastic hinge. Two deep-beam specimens with two pipes are prepared and tested under cyclic loads. Obtained results reveal that the TW-RBS(II) like its type I, increases story drift capacity up to 6% in deep beam much more than that stipulated by the current seismic codes. Based on test results, the proposed TW-RBS(II) helps to dissipate imposed energy up to 30% more than that of the TW-RBS(I) specimens at the same story drift and also reduces demands at the beam-to-column connection up to 30% by increasing plastic hinge length on the beam flange. The TW-RBS(II) specimens are finally simulated using finite element method showing good agreement with experimental results.
Keywords
energy dissipation; plastic hinge length; reduced beam section; accordion web RBS; two pipes; accordion cells;
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Times Cited By KSCI : 2  (Citation Analysis)
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