Nonlinear finite element analysis of effect of temperature on self-compacted steel fiber reinforced concrete slabs

2020 ◽  
Author(s):  
Ola Adel Qasim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Steel Fiber ◽  
Nonlinear Finite Element ◽  
Fiber Reinforced Concrete ◽  
Effect Of Temperature ◽  
Concrete Slabs ◽  
Steel Fiber Reinforced Concrete ◽  
Element Analysis ◽  
Reinforced Concrete Slabs

Nonlinear finite element analysis of tests of reinforced concrete slabs

2021 ◽  
Author(s):  
G. I. Zarate Garnica ◽  
Y. Yang ◽  
E. O. L. Lantsoght
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Nonlinear Finite Element Analysis ◽  
Nonlinear Finite Element ◽  
Concrete Slabs ◽  
Load Testing ◽  
Element Analysis ◽  
Concentrated Load ◽  
Reinforced Concrete Slabs

<p>In the Netherlands, many existing reinforced concrete slab bridges were built more than 50 years ago. Upon assessment with the new codes, a large number of this type of bridge rate insufficiently. Since many of these existing bridges present complex material properties and boundary conditions, proof load testing is considered an effective method to assess their capacity. However, to be able to safely apply proof load testing on slab bridges, verification in the laboratory is necessary. Therefore, experiments on reinforced concrete slabs of 5 m × 2,5 m × 0,3 m under a concentrated load with varying shear span to depth ratios are carried out in the laboratory of Delft University of Technology. Additionally, nonlinear finite element analysis is used to simulate the experiments following the guidelines of nonlinear finite element analysis published by the Dutch ministry of infrastructure and water management. The results from the finite element and experimental analyses are compared in terms of peak load, failure mode, and crack pattern. A good agreement between the experimental and numerical investigations is observed.</p>

scholarly journals Nonlinear finite element analysis of punching shear strength of reinforced concrete slabs supported on L-shaped columns

2020 ◽  
Vol 19 (4) ◽  
pp. 125-138
Author(s):  
Qing Zhang ◽  
Graeme J. Milligan ◽  
Maria Anna Polak
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Nonlinear Finite Element ◽  
Punching Shear ◽  
Shear Behaviour ◽  
Concrete Slabs ◽  
Shear Stresses ◽  
Element Analysis ◽  
Reinforced Concrete Slabs

Most current concrete design codes include provisions for punching shear of reinforced concrete slabs supported on columns with L, T, and cruciform shapes. Reference studies verifying the accuracy of these code provisions are typically not provided. Empirical data of punching failures of slabs supported on columns with L, T, and cruciform shapes are limited due to the cost and time required to test specimens with slab thicknesses and column sizes commonly used in practice. In this paper, the punching shear behaviour of five interior L-shaped slab-column connections, one without a slab opening and four with slab openings, subjected to static concentric loading are analyzed using a plasticity-based nonlinear finite element model (FEM) in ABAQUS. The FEM is similar to models previously calibrated at the University of Waterloo and are calibrated considering nine slabs that are tested to study the impact of column rectangularity on the punching shear behaviour of reinforced concrete slabs. The finite element analysis results indicate that shear stresses primarily concentrate around the ends of the L, and that current code predictions from ACI 318-19 and Eurocode 2 may be unconservative due to the assumed critical perimeters around L-shaped columns.

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