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International Journal of Steel Structures

, Volume 18, Issue 3, pp 891–909 | Cite as

A Novel Approach for Bolted T-Stub Connections

  • Merve Sağıroğlu
  • Mahyar Maali
  • Mahmut Kılıç
  • Abdulkadir Cüneyt AydınEmail author
Article

Abstract

This paper reports an investigation into new connection types and their behaviors determined using full-scale experiments. T-shaped connections were created using the IPE standard profile. The aim of this study was to analyze the influence of T connections based on the IPE standard profile, height of beam to height of T-stub joint (H) of T-stub joints, and lengths (X) of T-stub joints on the behavior of steel connections, in order to provide the necessary data for improving Eurocode 3 and enable efficient use of residue IPE standard profiles and back to the consumption cycle. While the moment resistance values increased with an increase in H from Hmin to Hmax in model groups with X of 126 mm, and the energy dissipation increased with an increase in H from Hmin to Hmax and also with an increase in the lengths (X) of T-stub joints from 54 to 126 mm.

Keywords

Experiment Moment–rotation curves IPE standard profile T-shaped connection Eurocode 3 

List of symbols

Fu

Ultimate or tensile stress

Fy

Yield stress

Est

Strain hardening modulus

ρy = fy/fu

Yield ratio

εst

Strain at the strain hardening point

εuni

Uniform strain

εf

Strain at rupture load

X

Cartesian axis; distance

E

Young’s modulus

I

Moment of inertia

Mj.Rd

Joint flexural plastic (design) resistance

Mj.max

Maximum bending moment

Mmin.K−R

Lower resistance bound of the knee-range of the joint moment–rotation curve

Msup.K−R

Upper resistance bound of the knee-range of the joint moment–rotation curve

MӨ.Cd

Bending moment at fracture of the joint

Sj.ini

Initial rotational stiffness of a joint

Sj.p−1

Post-yield rotational stiffness of a joint

ӨCd

Rotation capacity of a connection

ӨMj.max

Rotation of the connection at maximum load

ӨMj.Rd

Connection rotation analytical value at which the moment resistance first reaches Mj.Rd

Өmin K−R

Rotation between the lower bound of the knee-range of the joint moment–rotation curve and the rotation capacity

Өsup K−R

Rotation between the upper bound of the knee-range of the joint moment–rotation curve and the rotation capacity

Ψj.maxload

Joint ductility index evaluated for rotation at maximum load

Ψj

Joint ductility index

Notes

Acknowledgements

The authors wish to thank the BAP Project (2015/125) of Ataturk University, Turkey, for Project funding, the financial support given by the Tübitak (2215) for Mahyar Maali, and the Gençler Metal steel company for making the test specimens available.

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Copyright information

© Korean Society of Steel Construction 2018

Authors and Affiliations

  1. 1.Department of Civil Engineering, Faculty of Engineering and ArchitectureErzurum Technical UniversityErzurumTurkey
  2. 2.Department of Civil Engineering, Faculty of EngineeringAtaturk UniversityErzurumTurkey

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