Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Limitation of displacements of frame buildings under seismic impacts
Plastic strains develop in constructions of reinforced concrete frame buildings under seismic effects. In the design of buildings using the spectral method they are taken into account implicitly during the determination of seismic loads by the introduction of reducing factor of allowed damage. But their values must be limited in order to prevent the destruction or to eliminate the development of unacceptable damage of bearing constructions. The experimental two concentrated force test of 15 hinged beams has been conducted. The first series reference beams were tested by the monotonously increasing load up to destruction. The beams of the rest six series were loaded until the specified value of plasticity coefficient by reinforcement strains was reached. Then the beams were turned over and were loaded according to the same scheme up to destruction. According to the results of experiment it was established that the maximum plastic strains value in the tensile reinforcement influences sufficiently on the stress-strain state, bearing capacity and destruction mechanism of reinforced concrete bending elements when changing the sign of internal forces. The limit values of coefficient of plasticity preventing the formation of through unclosed cracks under seismic loads are determined. A simplified method of determination of the limit value of maximum displacements of reinforced concrete frames under seismic impacts has been suggested.
Limitation of displacements of frame buildings under seismic impacts
Plastic strains develop in constructions of reinforced concrete frame buildings under seismic effects. In the design of buildings using the spectral method they are taken into account implicitly during the determination of seismic loads by the introduction of reducing factor of allowed damage. But their values must be limited in order to prevent the destruction or to eliminate the development of unacceptable damage of bearing constructions. The experimental two concentrated force test of 15 hinged beams has been conducted. The first series reference beams were tested by the monotonously increasing load up to destruction. The beams of the rest six series were loaded until the specified value of plasticity coefficient by reinforcement strains was reached. Then the beams were turned over and were loaded according to the same scheme up to destruction. According to the results of experiment it was established that the maximum plastic strains value in the tensile reinforcement influences sufficiently on the stress-strain state, bearing capacity and destruction mechanism of reinforced concrete bending elements when changing the sign of internal forces. The limit values of coefficient of plasticity preventing the formation of through unclosed cracks under seismic loads are determined. A simplified method of determination of the limit value of maximum displacements of reinforced concrete frames under seismic impacts has been suggested.
Limitation of displacements of frame buildings under seismic impacts
Kurnavina Sofia (Autor:in) / Tsatsulin Ilya (Autor:in)
2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Metadata by DOAJ is licensed under CC BY-SA 1.0
Seismic Displacements of Torsionally Unbalanced Buildings
| Online Contents | 1995
Redundancy of steel frame buildings under seismic loads
| British Library Conference Proceedings | 1998
Seismic Assessment of RC Frame Buildings
| TIBKAT | 2016
Seismic Solutions for Steel Frame Buildings
| British Library Online Contents | 1996