A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Vibration of simplified prestressed pavement model under moving two-axle harmonic loads
Abstract The dynamic displacement response of a simplified prestressed concrete pavement model has been investigated comprehensively when the system is subjected to two-axle moving loads of harmonic amplitude variations. The axially loaded beam resting on a Winkler-type elastic foundation was employed as a simplified prestressed pavement model. The distributed loads with a constant advance velocity and damping of a linear hysteretic nature for the foundation were considered. Formulations were developed in the transformed field domains of time and moving space, and the steady-state responses to moving harmonic loads were obtained using a Fourier transform. Analyses were performed to investigate the effects of various parameters, such as the load distance, load phase, axial compression, damping, load velocity, and load frequency, on the displacement amplitude distribution and maximum displacement. The analysis results showed that the displacement responses were much affected by the load distance and load phase between two moving loads. However, the critical (resonance) values of the axial compression and load velocity were not affected by the load distance and phase. The first critical frequency was independent of those parameters, but the second critical frequency was dependent on them.
Vibration of simplified prestressed pavement model under moving two-axle harmonic loads
Abstract The dynamic displacement response of a simplified prestressed concrete pavement model has been investigated comprehensively when the system is subjected to two-axle moving loads of harmonic amplitude variations. The axially loaded beam resting on a Winkler-type elastic foundation was employed as a simplified prestressed pavement model. The distributed loads with a constant advance velocity and damping of a linear hysteretic nature for the foundation were considered. Formulations were developed in the transformed field domains of time and moving space, and the steady-state responses to moving harmonic loads were obtained using a Fourier transform. Analyses were performed to investigate the effects of various parameters, such as the load distance, load phase, axial compression, damping, load velocity, and load frequency, on the displacement amplitude distribution and maximum displacement. The analysis results showed that the displacement responses were much affected by the load distance and load phase between two moving loads. However, the critical (resonance) values of the axial compression and load velocity were not affected by the load distance and phase. The first critical frequency was independent of those parameters, but the second critical frequency was dependent on them.
Vibration of simplified prestressed pavement model under moving two-axle harmonic loads
Kim, Seong-Min (author) / Chung, Wonseok (author)
KSCE Journal of Civil Engineering ; 13 ; 409-421
2009-09-18
13 pages
Article (Journal)
Electronic Resource
English
Moving two-axle high frequency harmonic loads on axially loaded pavement systems
| Springer Verlag | 2010
Pavement Response Due to Dynamic Axle Loads
| British Library Conference Proceedings | 1997
Towards road pavement response under moving loads
| Taylor & Francis Verlag | 2019
Time-domain identification of moving axle loads
| British Library Conference Proceedings | 2005