原文传递
Dynamic Simulation of a Long-Span Bridge-Traffic System Subjected to Combined Service and Extreme Loads
| 题名： | Dynamic Simulation of a Long-Span Bridge-Traffic System Subjected to Combined Service and Extreme Loads |
| 其他题名： | Baker,C.J.(1986)."A simplified analysis of various types of wind-induced road vehicle accidents."J.Wind Eng.Ind.Aerodyn.,22(1),69–85. |
| 正文语种： | 英文 |
| 作者： | Yufen Zhou |
| 关键词： | Long-span bridges;Traffic system;Service loads;Extreme loads;Traffic flow;Dynamic performance;Dynamic effects |
| 摘要： | Long-span bridges support busy traffic and experience considerable wind loads on the bridge decks nearly every day. In addition to these two major service loads, some extreme loads such as earthquake, vehicle collision, or blast may also occur on the bridges simultaneously. Excessive dynamic responses of the bridge under extreme and service loads may not only cause local member damage, serviceability issues, or even global failure of the bridge structure, but also traffic safety concern on moving vehicles. A general simulation platform is established to investigate the dynamic performance of the bridge-traffic system under multiple service and extreme loads. The fully coupled bridge-traffic interaction model is developed by coupling the mode-based bridge model and all individual moving vehicles of the simulated stochastic traffic flow considering excitations from bridge deck roughness and other external dynamic loads. Through the established simulation platform, the global dynamic responses of the bridge and each individual vehicle subjected to various service and extreme loads can be rationally predicted in the time domain. As a demonstration, the proposed strategy is applied to a bridge-traffic system consisting of a prototype long-span cable-stayed bridge and stochastic traffic subjected to the excitations of road surface roughness, turbulent wind, and seismic ground motions. The vertical and lateral responses for the bridge and a representative vehicle are obtained and analyzed in different loading scenarios. Some observations are made based on the performance of both the prototype bridge and representative vehicle subjected to multiple dynamic loads. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N09008 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001188 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 09 |
| 页码： | 76-93 |
相关文献
- Framework of Nonlinear Dynamic Simulation of Long-Span Cable-Stayed Bridge and Traffic System Subjected to Cable-Loss Incidents
- Dynamic Response and Progressive Collapse of a Long-Span Suspension Bridge Induced by Suspender Loss
- Probabilistic Framework with Bayesian Optimization for Predicting Typhoon-Induced Dynamic Responses of a Long-Span Bridge
- Analysis of Multimode Coupled Buffeting Response of Long-Span Bridges to Nonstationary Winds with Force Parameters from Stationary Wind
- Life-Cycle Assessment of Long-Span Bridge’s Wind Resistant Performance Considering Multisource Time-Variant Effects and Uncertainties
- Wind-Induced Buffeting Vibration of Long-Span Bridge Considering Geometric and Aerodynamic Nonlinearity Based on Reduced-Order Modeling
检索历史
应用推荐
