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Shell-Based Finite Element Modelling of RC Flat Plates Subjected to Non-uniform Connection Region Stresses
This paper presents results obtained from a series of nonlinear finite element analyses (NLFEA) aimed at simulating the punching shear response of reinforced concrete (RC) slab-column connections subjected to highly non-uniform punching shear demands in the slab regions surrounding the intersecting column. Low-cost layered thick-shell finite elements that can adequately model through-thickness shearing effects, and cracked concrete material modelling in accordance with the Disturbed Stress Field Model (DSFM), are used to estimate the punching shear resisting performance of RC slab-column connections that employ different aspect ratio column supports and/or are constructed with varying configurations of reinforcement, under concentric shear loading conditions. Similar studies presented in the literature have applied solid element NLFEA with different material modelling procedures, and have obtained reasonable results for these type of RC slab connection analyses; however, in nearly all of these prior cases, they have demonstrated the need for extensive model calibration and for adapting specialized, problem-specific, failure criteria to ensure that meaningful results were obtained for the specific punching problem considered. The results presented in this paper were developed using a predetermined set of material models and analysis parameters, and provide good agreement with experimental results, without the need for extensive calibration studies and without the adoption of supplementary failure criteria. It was determined that the thick-shell NLFEA can adequately model and capture punching shear response for slabs that experience non-uniform shear demands within the connection regions.
Shell-Based Finite Element Modelling of RC Flat Plates Subjected to Non-uniform Connection Region Stresses
This paper presents results obtained from a series of nonlinear finite element analyses (NLFEA) aimed at simulating the punching shear response of reinforced concrete (RC) slab-column connections subjected to highly non-uniform punching shear demands in the slab regions surrounding the intersecting column. Low-cost layered thick-shell finite elements that can adequately model through-thickness shearing effects, and cracked concrete material modelling in accordance with the Disturbed Stress Field Model (DSFM), are used to estimate the punching shear resisting performance of RC slab-column connections that employ different aspect ratio column supports and/or are constructed with varying configurations of reinforcement, under concentric shear loading conditions. Similar studies presented in the literature have applied solid element NLFEA with different material modelling procedures, and have obtained reasonable results for these type of RC slab connection analyses; however, in nearly all of these prior cases, they have demonstrated the need for extensive model calibration and for adapting specialized, problem-specific, failure criteria to ensure that meaningful results were obtained for the specific punching problem considered. The results presented in this paper were developed using a predetermined set of material models and analysis parameters, and provide good agreement with experimental results, without the need for extensive calibration studies and without the adoption of supplementary failure criteria. It was determined that the thick-shell NLFEA can adequately model and capture punching shear response for slabs that experience non-uniform shear demands within the connection regions.
Shell-Based Finite Element Modelling of RC Flat Plates Subjected to Non-uniform Connection Region Stresses
Lecture Notes in Civil Engineering
Walbridge, Scott (editor) / Nik-Bakht, Mazdak (editor) / Ng, Kelvin Tsun Wai (editor) / Shome, Manas (editor) / Alam, M. Shahria (editor) / El Damatty, Ashraf (editor) / Lovegrove, Gordon (editor) / Abolhelm, R. (author) / Hrynyk, T. D. (author)
Canadian Society of Civil Engineering Annual Conference ; 2021
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 ; Chapter: 48 ; 569-581
2022-06-17
13 pages
Article/Chapter (Book)
Electronic Resource
English
| Elsevier | 2024
Buckling stresses for flat plates and sections
| Engineering Index Backfile | 1952