Parametric Finite Element Evaluation of RC Beam-Column Joints

Document Type : Original Article

Authors

1 MSc Student, Faculty of civil Engineering, Shahrood University of Technology, Shahrood, Iran

2 Assistant professor, Faculty of civil Engineering, Shahrood University of Technology, Shahrood, Iran

Abstract

Beam-column connections with non-seismic detailing in buildings with moment resisting lateral load bearing systems, are the major cause of post-earthquake damage. The optimal shape and energy absorption of the moment frame structure is dependent on the design and perfect execution of the beam-column connections. In the beam-column connections, the lack of positive reinforcement of the beam in the joint area and non-extension of the column stirrup in the joint area are common defects of the joints in accordance with new regulations. In this study, finite element models with seismic and non-seismic detail were considered and validate with laboratory tests by considering sliding effect of longitudinal beam reinforcement using modified steel stress-strain curve. Then, the effect of different lateral beam conditions around the joint was considered. The results showed well that the finite element model is more consistent with the experimental results when considering the slip effects of the longitudinal beam reinforcement. Also comparing the results of the models with the different lateral beam conditions showed that confining the non-seismic joints can increase the joint strength against lateral loads.

Keywords

References

[1]- Paulay, T., and Priestley, M. N., 1992, Seismic design of reinforced concrete and masonry buildings.
[2]-Hawileh, R. A., Rahman, A., and Tabatabai, H., 2010, Nonlinear finite element analysis and modeling of a precast hybrid beam–column connection subjected to cyclic loads. Applied Mathematical Modelling, 34(9), 2562-2583. doi:https://doi.org/10.1016/j.apm.2009.11.020
[3]-Roehm, C., Sasmal, S., Novák, B., and Karusala, R., 2015, Numerical simulation for seismic performance evaluation of fibre reinforced concrete beam–column sub-assemblages. Engineering Structures, 91, 182-196. doi:https://doi.org/10.1016/j.engstruct.2015.02.015
[4]- Shafaei, J., Hosseini, A., and Marefat, M. S., 2014, Seismic retrofit of external RC beam–column joints by joint enlargement using prestressed steel angles, Engineering Structures 81, 265-288.
[5]-Mander, J. B., Priestley, M. J., and Park, R. J., 1988, Theoretical stress-strain model for confined concrete, Engineering Structures, 114(8), 1804-1826.
[6]-Genikomsou, A. S., and Polak, M. A., 2015, Finite element analysis of punching shear of concrete slabs using damaged plasticity model in ABAQUS, 98, 38-48.
[7]-Alva, G. M. S., and de Cresce El, A. L., 2013, Moment–rotation relationship of RC beam-column connections, Experimental tests and analytical model. 56, 1427-1438.
[8]-Lowes, L. N., Mitra, N., and Altoontash, A., 2003, A beam-column joint model for simulating the earthquake response of reinforced concrete frames.
[9]-Monti, G., and Spacone, E. J., 2000, Reinforced concrete fiber beam element with bond-slip, Engineering Structures, 126(6), 654-661.
[10]-Tan, K. H., & Yu, J., 2014, Numerical analysis with joint model on RC assemblages subjected to progressive collapse.
[11]-Feng, D.-C., Wu, G., and Lu, Y., 2018, Finite element modelling approach for precast reinforced concrete beam-to-column connections under cyclic loading, Engineering Structures 174, 49-66.
Advance Researches in Civil Engineering
Volume 3, Issue 2
June 2021
Pages 16-26

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