STRUCTURAL PERFORMANCE OF COMPOSITE BOX BEAMS WITH CORRODED BOTTOM FLANGE UNDER MONOTONIC AND REPEATED LOADS
DOI:
https://doi.org/10.31272/jeasd.27.4.10Keywords:
Composite sections, Box Beam, Corrosion, Carbon fiber reinforced polymer, monotonic loads, repeated loadsAbstract
The current research is dedicated to studying the flexural behavior of composite box beams with corroded bottom flanges. Six simply supported beam specimens were manufactured and tested. The composite box beams were fabricated with steel box beams of 1100mm, 100mm, and 100mm for length, width, and height, respectively, while the concrete deck slabs were made with dimensions of 1100mm, 400mm, and 50mm for length, width, and thickness, respectively. The composite sections were formed by connecting the RC deck slabs with the steel box beams by using a headed shear connector. Three main variables were considered; the load type (monotonic or repeated), bottom flange thickness (with or without corrosion), and whether to consider or ignore the strengthening by CFRP strip. Experimental results indicated that the ultimate loads were decreased by 29-33% for the corroded bottom flange beam specimens; while the ultimate loads for the strengthened beam specimens were increased by 60-67% as compared with the un-strengthened corroded corresponding beam specimens. Also, the change of the applied loads from monotonic to repeated leads to a reduction of the ultimate load by 17-22%.
References
Jack, C., and C. McCormac., (2012). Structural Steel Design. Library of Congress New Jersey., 5th ed. 2012, pp. 562.
Nashir, Muhammad. 2020. Effect of Sulfuric Acid Concentration on The Corrosion Rate of ASTM A213-T12 Steel. Pp. 213–217 in Key Engineering Materials. Vol. 867. Trans Tech Publ. https://doi.og/10.4028/kem.867.213.
Paneru, Nav Raj. 2018. “Prestressed Carbon Fiber Reinforced Polymer (CFRP) Tendons in Bridges.”M.SC. Thesis, University of Toledo. https://doi.org/10.14359/5653
Sayed-Ahmed, Ezzeldin Yazeed. 2001. Behaviour of Steel and (or) Composite Girders with Corrugated Steel Webs. Canadian Journal of Civil Engineering 28(4):656–72. https://doi.org/10.1139/l01-027.
Al-Saidy, Abdullah H., F. W. Klaiber, and T. J. Wipf. 2004. Repair of Steel Composite Beams with Carbon Fiber-Reinforced Polymer Plates. Journal of Composites for Construction 8(2), pp. 656-672. https://doi.org/10.1061/(asce)1090-0268(2004)8: 2(163)
Liang, Qing Quan, Brian Uy, Mark A. Bradford, and Hamid R. Ronagh. 2005. “Strength Analysis of Steel-Concrete Composite Beams in Combined Bending and Shear.” Journal of Structural Engineering 131(10), pp.1593–1600. https://doi.org/10.1061/(asce)0733-9445(2005)131:10(1593)
Ibrahim, Amer M., and Qussay W. Ahmed. 2013. “Nonlinear Analysis of Simply Supported Composite Steel-Concrete Beam.” Diyala Journal of Engineering Sciences 6(3), pp.107–126. https://doi.org/10.24237/djes.2013.06308
W. M. A. W. Azmi, “Study on Effects of Soil Properties Towards Corrosion of Carbon Steel Pipeline.” University Malaysia Pahang, 2014. https://doi.org/10.1109/afrcon.2015.7331942
Y. Bao, M. Gulasey, C. Guillaume, N. Levitova, A. Moraes, and C. Satter, “Structural capacity analysis of corroded steel girder bridges,” 2018. https://doi.org/10.11159/iccste18.118
Ibrahim, Amer M., Wissam D. Salman, and Fahad M. Bahlol. 2019. “Flexural Behavior of Concrete Composite Beams with New Steel Tube Section and Different Shear Connectors.” Tikrit Journal of Engineering Sciences 26(1), pp.51–61. https://doi.org/10.24237/djes.2019.12404
Iraqi Specifications No. (5), “Portland Cement”, the Iraqi Central Organization for Standardization and Quality Control, Baghdad-Iraq, 1984.
Iraqi Specifications No. (45), “Aggregates from Natural Sources for Concrete and Building Construction”, the Iraqi Central Organization for Standardization and Quality Control, Baghdad-Iraq, (1984).
ASTM Designation C494–99a, “Standard Specification for Chemical Admixtures for Concrete”, American Society for Testing and Material, Philadelphia, Pennsylvania, USA.
ASTM-A 370–02, “Standard Test Methods and Definitions for Mechanical Testing of Steel Products”, American Society for Testing and Material, Philadelphia, Pennsylvania, USA.
ASTM A615/A615M, “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement”, American Society for Testing and Material, Philadelphia, Pennsylvania, USA.
ASTM C138- 17, “Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete”, American Society for Testing and Material, Philadelphia, USA.
BS 1881-116, Method for determination of compressive strength of concrete cubes, British Standards Institute, London, 1983.
ASTM C39-01, (2001), “Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens”, American Society for Testing and Material, Philadelphia, USA.
ASTM C496 – 96, (1996), "Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens", American Society for Testing and Material, Philadelphia, USA.
ASTM C78-02, “Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading”, American Society for Testing and Materials, Philadelphia, USA.
Downloads
Published
Issue
Section
License
Copyright (c) 2023 Ghufran Khudair Abbass, Ali Hameed Aziz
This work is licensed under a Creative Commons Attribution 4.0 International License.
