Advanced Steel Construction

Vol. 10, No. 1, pp. 1-13 (2014)


INVESTIGATION OF THE BEHAVIOR OF WEAKENED AND STRENGTHENED STEEL COLUMN-BEAM CONNECTIONS UNDER SEISMIC EFFECTS

 

Ali Koken 1,* and E. Tuba Hatipoglu 2

1 AssistantProfessor, Department of Civil Engineering, Engineering Faculty, Selcuk University, Konya, Turkey

2 Civil Engineer, Konya Provincial Administration, Turkey

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

 

Received: 14 March 2012; Revised: 4 August 2012; Accepted: 3 January 2013

DOI:10.18057/IJASC.2014.10.1.1

 

ABSTRACT:

Newly developed solution techniques were used for the beam to column connections of the steel structures after the 1994 Northridge and 1995 Kobe earthquakes. Two significant methods, the use of reduced beam sections and strengthened beam to column connections, are the methods most frequently studied in recent years.   In this study, an experimental procedure was performed to prevent the damages occurring at the beam to column connections of the buildings during an earthquake. For this purpose, four test specimens of beam to column connections were produced.   While the first specimen was a strengthened beam to column connection, the second and third were weakened specimens with 40% and 45% ratios, respectively. Additionally, an extra reference specimen (the fourth) was produced to compare the test results. Additionally, a calculation of the analytical force and moment capacities of the test specimens, and the experimental and analytical results were evaluated.   The use of reduced beam sections and strengthened beam to column connections favorably affected the behavior of the frame system in a manner that the failure formation occurred not at the connection members but at the end-sections of the beams.

 

Keywords:Steel frame, steel beam to column connection, seismic behavior of beam to column connections, weakened beam cross-section.

 

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