Vol 7, No 7 (2016) > Civil Engineering >

Finite Element Modeling of Concrete Specimens Confined with Metal Sheet Strips

Maetee Boonpichetvong, Tanyada Pannachet, Siraphon Pinitkarnwatkul

 

Abstract: This paper introduced a
nonlinear finite element model using Msc.MARC to study behavior of concrete
columns partially confined with metal sheet strips under uniaxial compression.
The concrete and the metal sheet parts were modeled using the linear
Mohr-Coulomb yield criterion and the Von-Mises yield criterion, respectively.
Behaviors of the interface (bonding) material, both in the normal direction and
the parallel direction to the interface, were modeled as a bilinear function
based on the cohesive energy and the crack widths. The columns in this study
had circular cross sections with the diameter of 15 cm and the height of 75 cm,
wrapped around by 5 cm metal sheet strips. The results from 3D finite element
modeling were analyzed for internally induced stresses and strains. The
predicted column behavior was compatible with observed experimental data. The
detailed mechanisms that were difficult to visualize during the laboratory
experiments could be obtained from the analysis. It was revealed that the area
of confinement and the number of applied metal sheet layers were important
factors to the strength increase. The discrete confinement system was shown to
be a promising alternative to the one-piece full-wrap system.
Keywords: Column; Concrete; Confinement; Finite element analysis; Metal sheet

Full PDF Download

References


Boonyarat, K., Pinitkarnwatkul, S., Chanpila, A., 2012. Effect of Concrete Compressive Strength on Axial Load Carrying Capacity of Concrete Column Strengthened with Metal Sheets, Undergraduate Research Report, Khon Kaen University, Thailand (In Thai)

Hongsinlark, N., Boonpichetvong, M., Pannachet, T., 2014. Finite Element Modeling of Axially Loaded Concrete Columns with Metal Sheet Confinement. KKU Engineering Journal, Volume 41(4), pp. 517-525 (In Thai)

Khamthong, M., Boonpichetvong, M., Pannachet, T., 2011. Axial Compression Strengthening of Concrete Columns Confined by Metal Sheet. In: Proceedings of the Seventh Annual Concrete Conference (ACC-7), 2011, Rayong, Thailand (In Thai)

Koksal, H.O., Doran, B., Turgay, T., 2009. A Practical Approach for Modeling FRP Wrapped Concrete Columns. Construction and Building Materials, Volume 23(3), pp. 1429-1437

Korbkeu, A., Tongsila, Ch., Tosomboon, I., 2013. Effect of Metal Sheet Arrangement on Load Carrying Capacity of Metal Sheet Confined Columns. Undergraduate Research Report, Khon Kaen University (In Thai)

Lertsrisakulrat, T., Watanabe, K., Matsuo, M., Niwa, J., 2001. Experimental Study on Parameters in Localization of Concrete Subjected to Compression. Journal of Materials, Concrete Structures and Pavements, JSCE, Volume 50(669), pp. 309–321

Mirmiran, A., Shahawy, M., 1997. Behavior of Concrete Columns Confined by Fiber Composites. Journal of Structural Engineering, Volume 123(5), pp. 583-590

Mirmiran, A., Shahawy, M., Samaan, M., Echary, H., Mastrapa, J., Pico, O., 1998. Effect of Column Parameters on FRP-Confined Concrete. Journal of Composites for Construction, Volume 2(4), pp. 175-185

Mirmiran, A., Zagers, K., Yuan, W., 2000. Nonlinear Finite Element Modeling of Concrete Confined by Fiber Composites. Finite Elements in Analysis and Design, Volume 35(1), pp. 79-96

MSC Software Corporation, 2010. Volume A: Theory and User Information, Taipei: MSC Software Corporation

Ozbakkaloglu, T., Lim, J.C., Vincent, T., 2013. FRP-Confined Concrete in Circular Sections: Review and Assessment of Stress-strain Models. Engineering Structures, Volume 49, pp. 1068-1088

Popovics, S., 1973. A Numerical Approach to the Complete Stress-strain Curve of Concrete. Cement and Concrete Research, Volume 3(5), pp. 583–599

Positong, A., Pannachet, T., 2014. Use of Metal Sheet Strips to Increase Compressive Strength of Concrete Columns. In: Proceedings of the Nineteenth National Convention on Civil Engineering (NCCE19), Khon Kaen, Thailand (In Thai)

Rots, J.G., 1988. Computational Modeling of Concrete Fracture, Delft University of Technology, Delft, the Netherlands

Shahawy, M., Mirmiran, A., Beitelman, T., 2000. Tests and Modeling of Carbon-wrapped Concrete Columns. Composites Part B: Engineering, Volume 31(6-7), pp. 471-480

SIKA Thailand Company Ltd., 2011. Product Data Sheet Sikadur®-31 CF Normal

Teng, J., Huang, Y., Lam, L., Ye, L., 2007. Theoretical Model for Fiber-reinforced Polymer-confined Concrete. Journal of Composites for Construction, Volume 11(2), pp. 201-210

Wangsa, K., Inla, T., Charoensri, P., 2011. Study on Increasing Efficiency of Metal-Sheet Bonded Square Concrete Columns under Uniaxial Compression. Undergraduate Research Report, Khon Kaen University, Thailand (In Thai)

Wu, G., Lu, Z.T., Wu, Z.S., 2006. Strength and Ductility of Concrete Cylinders Confined with FRP Composites. Construction and Building Materials, Volume 20(3), pp. 134-148

Yu, T., Teng, J.G., Wong, Y.L., Dong, S.L., 2010. Finite Element Modeling of Confined Concrete-I: Drucker-Prager Type Plasticity Model. Engineering Structures, Volume 32(3), pp. 665-679