Numerical Analysis of Reinforced Concrete Beam-Column Joints without Transverse Reinforcement

Document Type : Research

Authors

1 Associate Professor, Department of Civil Engineering, Faculty of Engineering, Bu Ali Sina University, Hamedan, Iran.

2 Assistant Professor, Department of Civil and Architect Engineering, Faculty of Engineering, Raja University, Qazvin, Iran.

3 Master of Civil-Structural Engineering, Department of Civil Engineering, Faculty of Engineering, Bu Ali Sina University, Hamedan, Iran.

Abstract

This research uses a nonlinear finite element analysis to evaluate and validate two experimental specimens. The Hognestad stress-strain model is used to express the uniaxial compressive behavior of concrete to define three-dimensional concrete in the ABAQUS software, and the linear model is utilized to introduce its tensile behavior. Furthermore, a bilinear model with kinematic hardening is used to simulate the behavior of the steel. Both corner and knee joints, including transverse beams and slabs, are investigated using experimental results from different aspects, including force-displacement hysteresis diagram, the effect of stiffness deterioration, fractural mode, energy absorption rate, and the contour of fracture, and von Mises stress. This study examines two different models which present the predictive modeling, so it is shown that the current model has remarkable power and high reliability by taking into account some important effective parameters in the modeling, such as vulnerable regions, design codes defects, the impact of concrete confinement in large plastic strains, and local buckling. To sum up, this research not only provides a reliable model with the lowest inaccuracy in the study of concrete corner beam-column under seismic load but also presents a simplification in the modeling process that highly reduces analysis time. 

Keywords


1. H. Sezen, K. Elwood, A. Whittaker, K. Mosalam, J. Wallace, J. Stanton. Structural engineering reconnaissance of the August 17, 1999, Kocaeli(Izmit), Turkey, earthquake. PEER Report 2000/09, Pacific Earthquake Engineering Research Center, University of California, Berkeley, December 2000.
 
2. M.S. Allam, H.M.F Elbakry, I.S.E. Arab. Exterior reinforced concrete beam column joint subjected to monotonic loading. Alexandria Engineering Journal, 57 (2018) 4133-4144.
https://doi.org/10.1016/j.aej.2018.10.015
 
3. N. Attari, Y.S. Yousef, S. Amziane. Seismic performance of reinforced concrete beam-column joint strengthening by frp sheets. Structures, 20 (2019) 353-364.
https://doi.org/10.1016/j.istruc.2019.04.007
 
4. Y.T. Obaidat, G.A.F.R. Abu-Farsakh, A.M. Ashteyat. Retrofitting of partially damaged reinforced concrete beam-column joints using various plate-configurations of CFRP under cyclic loading. Construction and Building Materials, 198 (2019) 313-322.
https://doi.org/10.1016/j.conbuildmat.2018.11.267
 
5. M. Engindeniz. Repair and Strengthening of Pre-1970 Reinforced Concrete Corner Beam-Column Joints Using CFRP Composites. Ph.D. thesis, Georgia Institute of Technology, Atlanta, GA, 2008.
 
6. G. Manfredi, G. Verderame, G. Lignola. A F.E.M. model for the evaluation of the seismic behavior of internal joints in reinforced concrete frames. In Proceedings of the 14th World Conference on Earthquake Engineering, Beijing, China, Junary 2008.
 
7. S. Lee, K. Kitayama, S. Otani, H. Aoyama. Shear strength of reinforced concrete interior beam-column joints using high-strength materials. Proc. of the Japan Concrete Institute, Japane, 14 (2) (1992) 379-384.
 
8. U. Akguzel. Seismic performance of FRP retrofitted exterior RC beam-column joints under varying axial and bidirectional loading", Ph.D. thesis, University of Canterbury, Christchurch, New Zealand, 2011.
 
9. J.B. Deaton. Nonlinear finite element analysis of reinforced concrete exterior beam-column joints with nonseismic detailing. Ph.D. thesis, School of Civil and Environmental Engineering Georgia Institute of Technology, 2013.
 
10. R. Selby, F. Vecchio. A constitutive model for analysis of reinforced concrete solids. Canadian Journal of Civil Engineering, 24 (1997) 460-470.
https://doi.org/10.1139/l96-135
 
11. R. Selby, F. Vecchio, M. Collins. Analysis of reinforced concrete members subject to shear and axial compression. ACI Structural Journal, 93 (1996).
https://doi.org/10.14359/9690
 
12. ACI, ACI 352R-02. Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures. ACI-ASCE Committee 352, American Concrete Institute, Farmington Hills, Michigan, 2002.
 
13. C. Pantelides, C. Clyde, L. Reaveled. Performance-based evaluation of reinforced concrete building exterior joints for seismic excitation. Earthquake Spectra, 18 (2002) 449-480.
https://doi.org/10.1193/1.1510447
 
14. ACI, ACI 318-63. Building code requirements for structural concrete and commentary. ACI Committee 318, American Concrete Institute, Detroit, Michigan, 2019.
 
15. F. Rezaie, , S.M. Farnam. Fracture Mechanics Analysis of Pre-stressed Concrete Sleepers via Investigating Crack Initiation Length. Engineering Failure Analysis - Elsevier, 58 (2015) 267-280.
https://doi.org/10.1016/j.engfailanal.2015.09.007
 
16. F. Rezaie, M. Bayat. A, S.M. Farnam. Pre-stressed Concrete Sleepers Sensitivity Analysis for Affective Factors of Longitudinal Crack Prorogation. Engineering Failure Analysis - Elsevier. 66 (2016) 385-397.
https://doi.org/10.1016/j.engfailanal.2016.04.015
 
17. F. Rezaie, , S.M. Farnam. Simulation of Crack Propagation in Pre-stressed Concrete Sleepers by Fracture Mechanics. Engineering Failure Analysis - Elsevier, 96 (2019) 109-117.
https://doi.org/10.1016/j.engfailanal.2018.09.012
 
18. ABAQUS/CAE user's manual, version 6.13, Hibiit Karlson & Sorensen Inc 2013.
 
19. E. Hognestad. Inelastic behavior in tests of eccentrically loaded short reinforced concrete columns. Journal of the American Concrete Institute, 124 (1952) 177-139.