Reports from Istanbul Technical University Add New Data to Findings in Structural Engineering (Effect of Fire Damage On Seismic Behavior of Cast-in-place Reinforced Concrete Columns)

Engineering Daily News

2020 OCT 29 (NewsRx) -- By a News Reporter-Staff News Editor at Engineering Daily News -- Investigators publish new report on Engineering - Structural Engineering. According to news reporting originating in Istanbul, Turkey, by NewsRx journalists, research stated, “This paper presents the results of an experimental study that was conducted to investigate the postfire seismic behavior of reinforced concrete columns. Five full-scale, flexure-critical code-complying (e.g., ACI 318-14) cast-in-place reinforced concrete columns were tested to failure under a constant axial load and reversed cyclic lateral displacements after being exposed to an ISO-834 standard fire for 30, 60, and 90 min.”

Financial supporters for this research include Istanbul Technical University (ITU) Scientific Research Department, Scientific and Technological Research Council of Turkey, Yapi Merkezi Prefabrication Inc., Allianz Insurance Inc., Turk YTONG Inc., Fibrobeton Inc.

The news reporters obtained a quote from the research from Istanbul Technical University, “Other than the effects of the duration of the fire exposure, the effects of the thickness of the concrete cover (25 and 40 mm) on the structural performance was also investigated for the short fire exposure duration (30 min). The responses of the columns were analyzed in terms of lateral load-displacement relationships, ductility, stiffness, energy dissipation capacities, and residual displacements. The test results indicated that the fire exposure reduced the lateral load capacity of the columns, whereas the deformability capabilities were found to be satisfactory in terms of a structural response. It was also observed that the thickness of the concrete cover had only a slight influence on the postfire seismic behavior of the columns. Furthermore, a numerical study was conducted to predict the load-displacement response of the fire exposed columns.”

According to the news reporters, the research concluded: “The comparison of the experimentally and numerically obtained load-displacement relationships indicated that the principles of structural mechanics usually applied to conventional columns are also valid for the columns exposed to fire.”

This research has been peer-reviewed.

For more information on this research see: Effect of Fire Damage On Seismic Behavior of Cast-in-place Reinforced Concrete Columns. Journal of Structural Engineering, 2020;146(11). Journal of Structural Engineering can be contacted at: Asce-Amer Soc Civil Engineers, 1801 Alexander Bell Dr, Reston, VA 20191-4400, USA. (American Society of Civil Engineers - www.asce.org; Journal of Structural Engineering - http://ascelibrary.org/sto)

Our news correspondents report that additional information may be obtained by contacting Ugur Demir, Istanbul Technical University, Civil Engineering Faculty, Tr-34469 Istanbul, Turkey. Additional authors for this research include Caglar Goksu, Alper Ilki, Goktug Unal and Mark Green.

The direct object identifier (DOI) for that additional information is: https://doi.org/10.1061/SSCEST.1943-541X.0002794. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

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