Numerical Analysis of the Experimental Flat Slabs

Abstract:

Reinforced concrete flat slabs are frequently used structural members in building construction. One of the most dangerous form of structural failure of these system is punching of the slab by support. The best way how to verify the reliability of standard model for the assessment of punching capacity is comparison of the resistance obtained from the experiments, with the resistances calculated according to the standard. To determine the reliability of the standards a large database of test results is required, but from economical point of view, it is not possible to prepare so many tests in order to fulfill this requirement. The problem can be solved by non-linear analysis which is a tool that allows to substitute actual tests with theoretical ones. The paper deals with non-linear analysis of punching of flat slabs, where the numerical model of flat slab specimens using results taken from the experimental program carried out at the laboratory of Slovak University of Technology. The task was to find the suitable non-linear material model for concrete and reinforcement, choose the proper boundary conditions, the correct load application and choose the appropriate way of modeling. The correct adjustment of the numerical model allows to carry out parametric study of flat slabs.

• Periodical: Solid State Phenomena (Volume 292)
• Pages: 134-139
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.292.134
• Online since: June 2019
• Authors: Lucia Majtánová*, Jaroslav Halvonik
• Keywords: Flat Slabs, Numerical, Punching, Resistance, Studs

References

[1] J. Einpaul, J. Bujnak, M.Ruiz, A.Muttoni, Study on influence of column size and slab slenderness on punching strength, ACI Structural Journal, V 113, January-February, (2016), pp.135-145.

DOI: 10.14359/51687945

[2] H. Ebrahimian, R. Astroza, J.P. Conte, I. J. Restrepo, C. T. Hutchinson - Pre-test Nonlinear Finite Element Modeling and Response Simulation of Full-Scale Five-Story Reinforced Concrete Building Tested on NEES UDSD Shake Table, California Institute of Technology, Suisse, July (2016).

DOI: 10.1061/(asce)st.1943-541x.0001963

[3] EN 1992-1-1 Design of Concrete Structures, Part 1-1 General Rules and Rules for Buildings, May (2004).

[4] A. S. Genikomsou, M. S. Polak, Effect of Openings on Punching Shear Strength of Reinforced Concrete Slabs - Finite Element Investigation, ACI Structural Journal/September-October (2017).

DOI: 10.14359/51689871

[5] A. Muttoni, F. Ruiz - Provisions for shear and punching shear, 8th draft, Presentation from CEN/TC250/SC2/WG1/TG4 meeting in Amsterdam, 24. March (2017).