Dynamic Reliability of Continuous Rigid-Frame Bridges under Stochastic Moving Vehicle Loads
Joint Authors
Luo, Yuan
Xiao, Xinhui
Wang, Kai
Lu, Naiwei
Liu, Yang
Wang, Honghao
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-25
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The current volume of freight traffic has increased significantly during the past decades, impacted by the fast development of the national transportation market.
As a result, the phenomena of truck overloading and traffic congestion emerge, which have resulted in numerous bridge collapse events or damage due to truck overloading.
Thus, it is an urgent task to evaluate bridge safety under actual traffic loads.
This study evaluated probabilistic dynamic load effects on rigid-frame bridges under highway traffic monitoring loads.
The site-specific traffic monitoring data of a highway in China were utilized to establish stochastic traffic models.
The dynamic effect was considered in a vehicle-bridge coupled vibration model, and the probability estimation was conducted based on the first-passage criterion of the girder deflection.
The prototype bridge is a continuous rigid-frame bridge with a midspan length of 200 m and a pier height of 182 m.
It is demonstrated that the dynamic traffic load effect follows Gaussian distribution, which can be treated as a stationary random process.
The mean value and standard deviation of the deflections are 0.071 m and 0.088 m, respectively.
The dynamic reliability index for the first passage of girder deflection is 6.45 for the current traffic condition.
However, the reliability index decreases to 5.60 in the bridge lifetime, accounting for an average traffic volume growth ratio of 3.6%.
American Psychological Association (APA)
Lu, Naiwei& Wang, Kai& Wang, Honghao& Liu, Yang& Luo, Yuan& Xiao, Xinhui. 2020. Dynamic Reliability of Continuous Rigid-Frame Bridges under Stochastic Moving Vehicle Loads. Shock and Vibration،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1210496
Modern Language Association (MLA)
Lu, Naiwei…[et al.]. Dynamic Reliability of Continuous Rigid-Frame Bridges under Stochastic Moving Vehicle Loads. Shock and Vibration No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1210496
American Medical Association (AMA)
Lu, Naiwei& Wang, Kai& Wang, Honghao& Liu, Yang& Luo, Yuan& Xiao, Xinhui. Dynamic Reliability of Continuous Rigid-Frame Bridges under Stochastic Moving Vehicle Loads. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1210496
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1210496