Serviceability limits of reinforced concrete hinges
| Autor: | Herbert A. Mang, Johannes Kalliauer, Susanne Gmainer, Bernhard Pichler, Josef Eberhardsteiner, Thomas Schlappal, Markus Vill |
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| Rok vydání: | 2020 |
| Předmět: |
Normal force
Serviceability (structure) Computer science business.industry 0211 other engineering and technologies Hinge 020101 civil engineering 02 engineering and technology Structural engineering Reinforced concrete 0201 civil engineering 021105 building & construction Structural testing Reinforcement business Civil and Structural Engineering |
| Zdroj: | Engineering Structures. 208:109861 |
| ISSN: | 0141-0296 |
| DOI: | 10.1016/j.engstruct.2019.109861 |
| Popis: | Concrete hinges are monolithic necks in reinforced concrete structures. The serviceability limit states addressed herein refer to the open question how to limit tolerable relative rotations as a function of the compressive normal force transmitted across the neck. Analytical formulae are derived in the framework of the Bernoulli-Euler hypothesis and of Hooke’s law. The usefulness of corresponding dimensionless design diagrams is assessed based on experimental data taken from the literature and on new results from structural testing of reinforced concrete hinges. This way, it is shown that the proposed mechanical model is suitable for describing serviceability limit states. Corresponding design recommendations are elaborated and exemplarily applied to verification of serviceability limit states of the reinforced concrete hinges of a recently built integral bridge. Because the reinforcement is explicitly accounted for, the tolerable relative rotations are larger than those according to the guidelines of Leonhardt and Reimann. Bending-induced tensile macrocracking beyond one half of the smallest cross-section of the neck is acceptable, because the tensile forces carried by the reinforcement ensure the required position stability of the hinges. |
| Databáze: | OpenAIRE |
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