Advanced Steel Construction

Vol. 6, No. 2, pp. 803-816 (2010)


EVALUATION OF THE REMAINING SHEAR CAPACITY IN CORRODED STEEL I-BEAMS

 

Y. Sharifi 1,* and R. Rahgozar 1

1 Civil Engineering Department, Kerman University, Kerman, Iran

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

 

Received: 13 July 2009; Revised: 24 September 2009; Accepted: 30 November 2009

DOI:10.18057/IJASC.2010.6.2.8

 

ABSTRACT:

There are a large number of steel structures subjected to corrosion due to environmental exposure; which results in reduction of its load carrying capacity. In this paper, thickness loss data were compiled from three samples of corrosion damaged I-beams, removed from a petrochemical industry. Common examples of corrosion that were found included damage loss of section in flanges and holes in the web which is likely to reduce the shear capacity significantly. The collected data was used to calculate the percentage of remaining shear capacity. Corrosion damaged model was developed for steel I-beams based on average measured thicknesses of corroded beams. Formulas were developed to relate the percentage of remaining shear capacity to percentage thickness loss of the corrosion damaged I-beam. It will be shown that very few approximations were needed to derive these analytical relations. The effects of corrosion on steel beams are analyzed by evaluating the remaining capacity with regard to shear failure. Hence, the results of this study can be used for better prediction of the service life for deteriorating steel beams.

 

Keywords:Corrosion; steel beams; damaged model; remaining shear capacity

 

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