Techno Press
You logged in as Techno Press

Steel and Composite Structures
  Volume 23, Number 4, March20 2017 , pages 421-433
DOI: https://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
Seyed M. Zahrai, Seyed R. Mirghaderi and Aboozar Saleh

 
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.
 
Key Words
    energy dissipation; plastic hinge length; reduced beam section; accordion web RBS; two pipes; accordion cells
 
Address
(1) Seyed M. Zahrai, Seyed R. Mirghaderi:
School of Civil Engineering, College of Engineering, The University of Tehran, Iran;
(2) Aboozar Saleh:
Department of Civil Engineering, Islamic Azad University Professor Hesabi Branch, Tafresh, Iran.
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2025 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: admin@techno-press.com