Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Punching Shear
Punching shear is a local failure mechanism of an RC structural element, typically a slab, caused by a concentrated load. It can occur when the structural element is too thin to support the applied load and/or the size of the loaded area is too small. This chapter deals with the verification of punching shear for slabs and footings subjected to vertical loads only, while effects due to the cyclic inversion of bending moments at column-slab joints during seismic events are not considered. In literature, various models are available to calculate the punching shear strength: some models are based on the plasticity theory, others on strut and tie (S&T) models or fracture mechanics, but an analytical complete formulation is still missing. Formulas adopted in the international codes, like EC2, are substantially experimental. To evaluate the punching shear strength of a structural element, EC2 defines a conventional control perimeter along which the load is distributed. For slabs, the control perimeter is placed at a distance equal to twice the effective depth from the edge of the column or from the loaded area. For foundations, the control perimeter is placed at a distance not higher than twice the effective depth and it must be identified through an iterative procedure. All the verifications are described in detail and many case studies show their application to real cases.
Punching Shear
Punching shear is a local failure mechanism of an RC structural element, typically a slab, caused by a concentrated load. It can occur when the structural element is too thin to support the applied load and/or the size of the loaded area is too small. This chapter deals with the verification of punching shear for slabs and footings subjected to vertical loads only, while effects due to the cyclic inversion of bending moments at column-slab joints during seismic events are not considered. In literature, various models are available to calculate the punching shear strength: some models are based on the plasticity theory, others on strut and tie (S&T) models or fracture mechanics, but an analytical complete formulation is still missing. Formulas adopted in the international codes, like EC2, are substantially experimental. To evaluate the punching shear strength of a structural element, EC2 defines a conventional control perimeter along which the load is distributed. For slabs, the control perimeter is placed at a distance equal to twice the effective depth from the edge of the column or from the loaded area. For foundations, the control perimeter is placed at a distance not higher than twice the effective depth and it must be identified through an iterative procedure. All the verifications are described in detail and many case studies show their application to real cases.
Punching Shear
Angotti, Franco (Autor:in) / Guiglia, Matteo (Autor:in) / Marro, Piero (Autor:in) / Orlando, Maurizio (Autor:in)
Reinforced Concrete with Worked Examples ; Kapitel: 9 ; 469-586
05.06.2022
118 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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Punching Shear Resistance of SFRC Flat Slabs with and Without Punching Shear Reinforcement
| Springer Verlag | 2021
Shear Punching of Bridge Decks
| NTIS | 1977