A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nonlinear vibration characteristics of fatigue damaged reinforced concrete structures
In this paper, nonlinear vibration techniques were applied to investigate stages of progressive damage in three vibration isolation systems induced by dynamic loadings. Analytical models for reinforced concrete structures of three isolation systems were developed based on FEM with discrete crack concept. Vibration response spectra and the spectra of forces transmitted through the isolators were computed with respect to stationary dynamic loads. In addition, fatigue properties of concrete structures were examined for given materials' properties and given geometries. The results indicated that the proposed isolation system 3 (rigid foundation with isolation pad on the foundations's fou sides) met the vibration criteria and hence it is recommended for construction. Furthermore, it was found that using isolation material on the sides of the foundation is only effective to reduce the vibration transmitted to the surrounding area and the secondary seismic mass. In the crack fatigue analysis, this system provided a longer fatigue life, and exhibited flexural failure that is ductile. The addition of the substructure in concrete, therefore, led to the improvement in fatigue resistance, and significantly increased the shear capacity of this system.
Nonlinear vibration characteristics of fatigue damaged reinforced concrete structures
In this paper, nonlinear vibration techniques were applied to investigate stages of progressive damage in three vibration isolation systems induced by dynamic loadings. Analytical models for reinforced concrete structures of three isolation systems were developed based on FEM with discrete crack concept. Vibration response spectra and the spectra of forces transmitted through the isolators were computed with respect to stationary dynamic loads. In addition, fatigue properties of concrete structures were examined for given materials' properties and given geometries. The results indicated that the proposed isolation system 3 (rigid foundation with isolation pad on the foundations's fou sides) met the vibration criteria and hence it is recommended for construction. Furthermore, it was found that using isolation material on the sides of the foundation is only effective to reduce the vibration transmitted to the surrounding area and the secondary seismic mass. In the crack fatigue analysis, this system provided a longer fatigue life, and exhibited flexural failure that is ductile. The addition of the substructure in concrete, therefore, led to the improvement in fatigue resistance, and significantly increased the shear capacity of this system.
Nonlinear vibration characteristics of fatigue damaged reinforced concrete structures
Nichtlineares Schwingungsverhalten von Stahlbetonbauten mit Ermüdungsschäden
Kim, Jin Ho (author)
2005
6 Seiten, 7 Bilder, 1 Tabelle, 6 Quellen
Conference paper
English
Nonlinear Vibration Characteristics of Fatigue Damaged Reinforced Concrete Structures
| British Library Online Contents | 2005
Nonlinear Vibration Characteristics of Damaged Concrete Beams
| British Library Online Contents | 2003
Nonlinear Vibration Characteristics of Damaged Concrete Beams
| Online Contents | 2003
Rehabilitation of damaged reinforced concrete structures
| British Library Conference Proceedings | 2001
Nonlinear Characteristics of Damaged Concrete Structures under Vehicular Load
| Online Contents | 2005