Numerical Simulation of the Punching Shear Behavior of Fiber- Reinforced Concrete Slabs
DOI:
https://doi.org/10.70567/mc.v42.ocsid8266Keywords:
Punching, Steel Fiber Reinforced Concrete, Numerical simulationAbstract
Punching failure in reinforced concrete slabs is a brittle mechanism that causes a considerable loss of load capacity. Therefore, to improve punching shear strength, one possible strategy is the use of fiber reinforced concrete, among others. Numerical simulation of punching tests carried out on steel fiber reinforced concrete slabs is presented in this work. To represent the nonlinear behavior of concrete, a coupled damage plasticity model was adopted. For fiber reinforced concrete, steel fibers were considered as discrete elements randomly distributed within the concrete matrix. The problem was solved using a nonlinear finite element code. The obtained results were compared with experimental data and analytical predictions from existing models. Finally, a parametric study was conducted, taking concrete strength, fiber dosage and orientation as variables.
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