Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shear Transfer Across Cracks in Reinforced Concrete
An experimental and analytical investigation was conducted to assess the transfer of cyclic shear forces in cracked reinforced concrete by means of the interface shear transfer and dowel action mechanisms. Two test series evaluated the transfer of shear forces by the combination of the interface shear transfer and dowel action mechanisms, and the dowel action mechanism alone. The initial crack width and the reinforcement ratios provided at the shear plane, the number of loading cycles, and the cyclic shear stress intensity were the main variables studied using a test specimen modeled after an idealized section of the cracked structure. The average shear displacement, crack width, and reinforcement strains were measured in each specimen for all load increments. Simplified equations were developed to describe the first loading cycle stiffness exhibited by both the interface shear transfer and dowel action mechanism. A bilinear idealization was proposed for the experimental hysteresis curve of each mechanism together with the corresponding stiffness coefficients. Equations were derived from a nonlinear regression analysis for the splitting failure force for axial or dowel forces, and for their interaction. An equation was also proposed for the ultimate shear stress that can be transferred across a precracked shear plane. The research concluded that shear forces can be efficiently transferred across cracked surfaces by the combined action of the interface shear transfer and dowel action mechanisms. The investigation was motivated by the desire to assess the behavior of the shear transfer mechanism in cracked secondary nuclear containment vessels.
Shear Transfer Across Cracks in Reinforced Concrete
An experimental and analytical investigation was conducted to assess the transfer of cyclic shear forces in cracked reinforced concrete by means of the interface shear transfer and dowel action mechanisms. Two test series evaluated the transfer of shear forces by the combination of the interface shear transfer and dowel action mechanisms, and the dowel action mechanism alone. The initial crack width and the reinforcement ratios provided at the shear plane, the number of loading cycles, and the cyclic shear stress intensity were the main variables studied using a test specimen modeled after an idealized section of the cracked structure. The average shear displacement, crack width, and reinforcement strains were measured in each specimen for all load increments. Simplified equations were developed to describe the first loading cycle stiffness exhibited by both the interface shear transfer and dowel action mechanism. A bilinear idealization was proposed for the experimental hysteresis curve of each mechanism together with the corresponding stiffness coefficients. Equations were derived from a nonlinear regression analysis for the splitting failure force for axial or dowel forces, and for their interaction. An equation was also proposed for the ultimate shear stress that can be transferred across a precracked shear plane. The research concluded that shear forces can be efficiently transferred across cracked surfaces by the combined action of the interface shear transfer and dowel action mechanisms. The investigation was motivated by the desire to assess the behavior of the shear transfer mechanism in cracked secondary nuclear containment vessels.
Shear Transfer Across Cracks in Reinforced Concrete
R. Jimenez-Perez (Autor:in) / P. Gergely (Autor:in) / R. N. White (Autor:in)
1978
375 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Reactor Engineering & Nuclear Power Plants , Reinforced concrete , Cracks , Shear properties , Nuclear reactor containment , Cracking(Fracturing) , Shear strength , Shear tests , Fortran , Computer programs , Fortran 4 programming language , IBM-370 computers , Shear transfer , Containment systems
Reversed Cyclic Experiments on Shear Stress Transfer across Cracks in Reinforced Concrete Elements
| Online Contents | 2016
Reversed Cyclic Experiments on Shear Stress Transfer across Cracks in Reinforced Concrete Elements
| Online Contents | 2016
Shear cracks in reinforced-concrete cantilever
| Engineering Index Backfile | 1930
Shear cracks in reinforced-concrete cantilever
| Engineering Index Backfile | 1930
Experimental Test on Reinforced Concrete Beams Shear Cracks
| British Library Conference Proceedings | 1998