Petr Rericha - Academia.edu (original) (raw)
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Papers by Petr Rericha
Sustainability, 1970
Fracture energy is the most appropriate material parameter to predict the energy dissipation due ... more Fracture energy is the most appropriate material parameter to predict the energy dissipation due to cracking although in reinforced concrete the application is not straightforward. Standard test methods for concrete fracture energy fail in fast loading conditions. A test arrangement and instrumentation has been proposed and set up for this purpose. The principal idea is to measure not the concrete fracture energy directly but the energy spent in a reinforced concrete specimen. The calibration procedure assumes a kind of a crack pattern in the specimen. The proposed testing method does not yet yield the absolute values of the fracture energy with satisfactory reliability but in spite of it the strain rate effect on the fracture energy may be explored. The loading device is a simple free fall apparatus. The results indicate that up to strain rate 1 s~~* no significant increase of the fracture energy occurs.
Proceedings of the 7th International Conference on Civil, Structural and Transportation Engineering (ICCSTE'22)
Nuclear Engineering and Design, 2005
Journal of Structural Engineering, 1991
An analytical model of the progressive bending-shear failure of reinforced concrete (RC) beams an... more An analytical model of the progressive bending-shear failure of reinforced concrete (RC) beams and plates is proposed and validated by comparison to experiments. The model uses the transverse shear deformation associated with the Mindlin or Timoshenko hypotheses. The transverse normal strain is determined from an equilibrium condition. The model can be used in the analysis of the static limit load and dynamic transient phenomena in these structures. The transverse equilibrium condition and the compatibility of strains are approximately satisfied when the shear force and conjugate transverse shear deformation vary moderately along the beam axis. The assumed stress field is a generalized continuum counterpart of the strut-and-tie model of the limit shear strength theory of RC beams. The present model is independent of actual material laws of the materials involved, provided the material law of concrete includes the inelastic volumetric tension to account for smeared cracks. The model is validated by comparison to static tests of RC beams and a dynamic impact test of a circular RC plate.
International Journal for Numerical Methods in Engineering, 1986
Sustainability, 1970
Fracture energy is the most appropriate material parameter to predict the energy dissipation due ... more Fracture energy is the most appropriate material parameter to predict the energy dissipation due to cracking although in reinforced concrete the application is not straightforward. Standard test methods for concrete fracture energy fail in fast loading conditions. A test arrangement and instrumentation has been proposed and set up for this purpose. The principal idea is to measure not the concrete fracture energy directly but the energy spent in a reinforced concrete specimen. The calibration procedure assumes a kind of a crack pattern in the specimen. The proposed testing method does not yet yield the absolute values of the fracture energy with satisfactory reliability but in spite of it the strain rate effect on the fracture energy may be explored. The loading device is a simple free fall apparatus. The results indicate that up to strain rate 1 s~~* no significant increase of the fracture energy occurs.
Proceedings of the 7th International Conference on Civil, Structural and Transportation Engineering (ICCSTE'22)
Nuclear Engineering and Design, 2005
Journal of Structural Engineering, 1991
An analytical model of the progressive bending-shear failure of reinforced concrete (RC) beams an... more An analytical model of the progressive bending-shear failure of reinforced concrete (RC) beams and plates is proposed and validated by comparison to experiments. The model uses the transverse shear deformation associated with the Mindlin or Timoshenko hypotheses. The transverse normal strain is determined from an equilibrium condition. The model can be used in the analysis of the static limit load and dynamic transient phenomena in these structures. The transverse equilibrium condition and the compatibility of strains are approximately satisfied when the shear force and conjugate transverse shear deformation vary moderately along the beam axis. The assumed stress field is a generalized continuum counterpart of the strut-and-tie model of the limit shear strength theory of RC beams. The present model is independent of actual material laws of the materials involved, provided the material law of concrete includes the inelastic volumetric tension to account for smeared cracks. The model is validated by comparison to static tests of RC beams and a dynamic impact test of a circular RC plate.
International Journal for Numerical Methods in Engineering, 1986