Title:
Nonlinear Static Analysis of Flat Slab Floors with Grid Model (with Appendix)
Author(s):
Dario Coronelli and Guglielmo Corti
Publication:
Structural Journal
Volume:
111
Issue:
2
Appears on pages(s):
343-352
Keywords:
flat slabs; grid models; punching shear; slab-column connections
DOI:
10.14359/51686526
Date:
3/1/2014
Abstract:
A grid model has been set up for the nonlinear response of a flat slab subjected to gravity and lateral cyclic loading. The model requires the definition of the grid geometry and properties of point hinges in beam finite elements, and modelling the nonlinear response in bending, torsion, and shear. The simulation is carried out for experimental tests on a floor under gravity and lateral biaxial cyclic loading of increasing amplitude. Pushover analyses have been performed under gravity and horizontal loads in the two principal directions. Predictions are shown of the global response and the connections of different column shapes and slab reinforcement with the strength, drift capacity, and failure modes. The accuracy is different in the two directions of loading due to the damage of the test slab for biaxial cyclic loading. The results show the potential of the model for design and analysis of existing flat slab structures.