A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A New Shear Model for Fibre-Reinforced Concrete Members Without Shear Reinforcement
Abstract A new shear model for slender fibre-reinforced concrete members without shear reinforcement based on the principles of structural mechanics is presented. It is assumed that the shear strength is corresponding to a failure taking place at the neutral axis when the principal tensile stress of concrete reaches the concrete tensile strength, which constructs a sudden crack connecting to the critical shear crack tip. Realistic values of material and structural properties including concrete tensile strength, residual tensile stress of fibre concrete, fracture energy, crack width as well as crack spacing are analysed and directly taken into account in the new model without any modification. In contrast to existing shear models, size effect is naturally considered through tensile fracture energy of concrete together with crack spacing. The accuracy of the proposed method has been verified by comparing the model predictions with experimental results of different concrete members, providing consistent and better prediction results than those of the shear models in current codes of practice. The results according to this validation are discussed, leading some conclusions on the new shear.
A New Shear Model for Fibre-Reinforced Concrete Members Without Shear Reinforcement
Abstract A new shear model for slender fibre-reinforced concrete members without shear reinforcement based on the principles of structural mechanics is presented. It is assumed that the shear strength is corresponding to a failure taking place at the neutral axis when the principal tensile stress of concrete reaches the concrete tensile strength, which constructs a sudden crack connecting to the critical shear crack tip. Realistic values of material and structural properties including concrete tensile strength, residual tensile stress of fibre concrete, fracture energy, crack width as well as crack spacing are analysed and directly taken into account in the new model without any modification. In contrast to existing shear models, size effect is naturally considered through tensile fracture energy of concrete together with crack spacing. The accuracy of the proposed method has been verified by comparing the model predictions with experimental results of different concrete members, providing consistent and better prediction results than those of the shear models in current codes of practice. The results according to this validation are discussed, leading some conclusions on the new shear.
A New Shear Model for Fibre-Reinforced Concrete Members Without Shear Reinforcement
Tran, Ngoc Linh (author)
2017-08-06
13 pages
Article/Chapter (Book)
Electronic Resource
English
Shear Database for Reinforced Concrete Members without Shear Reinforcement
| Online Contents | 2003
Discussion - Shear Database for Reinforced Concrete Members without Shear Reinforcement.
| Online Contents | 2004