2 results
Now showing1 - 2 of 2
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Rissreibung in Biegeschubrissen(2023-07); Aggregate Interlock in critical shear cracks. Numerous models have been published for estimating the shear capacity of reinforced and prestressed concrete members without transverse reinforcement. Some approaches assume that the shear force is essentially carried by crack friction. Others consider the uncracked concrete compression zone as the governing load-bearing mechanism. To address this question, 10 tests were conducted on reinforced concrete beams without stirrups. The focus of the tests was to record crack development and to measure crack opening and crack sliding. Using conventional and modern measurement methods, such as digital image correlation (DIC), the load-bearing behavior was extensively recorded and evaluated. Furthermore, the crack surfaces were inspected and the shear friction was calculated. According to the conducted investigations, crack friction carries only a small proportion of the total shear force. The results of the research project thus contribute to a better understanding of shear force transfer in reinforced concrete members without shear reinforcement.Publicationtype: Journal Article47 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Untersuchungen zur Kraftübertragung in Rissen von Stahlbetonbalken infolge Querkraft- und Torsionsbeanspruchung : Versuchsbericht(2022-04-10); ; Reinforced concrete beams and slab strips under shear force and torsion loading, respectively were tested in the year 2021 at the laboratory of the Institute of Concrete Structures of the Technical University Hamburg (TUHH). The aim of the research project was to determine the magnitude of the deformations at the entire crack (crack kinematics) and thus also the stress state along the crack faces as a function of various input variables. In particular, it was also to be clarified whether significant crack friction stresses occur. The concrete strains and the crack development were recorded by photogrammetry (DIC) and the steel strains by fiber optic sensors.Publicationtype: Research Report304 304