A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Vehicle-induced fatigue damage prognosis of orthotropic steel decks of cable-stayed bridges
Highlights A new framework is proposed for fatigue damage prognosis of a cable-stayed bridge. The framework considers fully-coupled vehicle-bridge dynamics. The framework also considers deck and pavement interaction. The framework has been applied to a real long-span cable-stayed bridge in Hong Kong. The fatigue damage is underestimated if neglecting temperature and road roughness. The fatigue damage is overestimated if neglecting transverse locations of vehicles.
Abstract Orthotropic steel deck (OSD) in a long-span cable-stayed bridge is vulnerable to fatigue damage at the deck-to-rib (DTR) joints due to excessive vehicle-induced dynamic stresses. A framework for fatigue damage prognosis of OSD in long-span cable-stayed bridges is thus presented in this paper. The main features of the framework include hourly traffic loading simulation and prediction, multi-scale finite element bridge model, coupled vehicle-bridge system, mesh-insensitive equivalent stress responses at a DTR joint, response surface models for equivalent stress responses, OSD and pavement interaction, asphalt pavement temperature effect, fatigue test-generated S-N curve, and fatigue damage prognosis. To evaluate the feasibility of the proposed framework and to manifest the effects of pavement roughness, asphalt temperature, and vehicle transverse locations on fatigue damage accumulation, a real long span cable-stayed bridge is investigated as a case study. The results indicate that the developed framework is applicable and that the fatigue damage of a DTR joint is underestimated if the time-variant temperature of asphalt pavement and road surface condition are not considered but the fatigue damage is overestimated without consideration of variable transverse locations of vehicles.
Vehicle-induced fatigue damage prognosis of orthotropic steel decks of cable-stayed bridges
Highlights A new framework is proposed for fatigue damage prognosis of a cable-stayed bridge. The framework considers fully-coupled vehicle-bridge dynamics. The framework also considers deck and pavement interaction. The framework has been applied to a real long-span cable-stayed bridge in Hong Kong. The fatigue damage is underestimated if neglecting temperature and road roughness. The fatigue damage is overestimated if neglecting transverse locations of vehicles.
Abstract Orthotropic steel deck (OSD) in a long-span cable-stayed bridge is vulnerable to fatigue damage at the deck-to-rib (DTR) joints due to excessive vehicle-induced dynamic stresses. A framework for fatigue damage prognosis of OSD in long-span cable-stayed bridges is thus presented in this paper. The main features of the framework include hourly traffic loading simulation and prediction, multi-scale finite element bridge model, coupled vehicle-bridge system, mesh-insensitive equivalent stress responses at a DTR joint, response surface models for equivalent stress responses, OSD and pavement interaction, asphalt pavement temperature effect, fatigue test-generated S-N curve, and fatigue damage prognosis. To evaluate the feasibility of the proposed framework and to manifest the effects of pavement roughness, asphalt temperature, and vehicle transverse locations on fatigue damage accumulation, a real long span cable-stayed bridge is investigated as a case study. The results indicate that the developed framework is applicable and that the fatigue damage of a DTR joint is underestimated if the time-variant temperature of asphalt pavement and road surface condition are not considered but the fatigue damage is overestimated without consideration of variable transverse locations of vehicles.
Vehicle-induced fatigue damage prognosis of orthotropic steel decks of cable-stayed bridges
Cui, Chuang (author) / Xu, You-Lin (author) / Zhang, Qing-Hua (author) / Wang, Feng-Yang (author)
Engineering Structures ; 212
2020-03-09
Article (Journal)
Electronic Resource
English
Vehicle-induced dynamic stress analysis of orthotropic steel decks of cable-stayed bridges
| Taylor & Francis Verlag | 2020
Aerodynamic Optimization of Decks of Cable-Stayed Bridges
| British Library Conference Proceedings | 2001
Optimization of cable-stayed bridges with box-girder decks
| Tema Archive | 1997