Time-dependent Reliability Assessment of Existing Concrete Bridges including Non-stationary Vehicle Load and Resistance Processes

It is well known that existing concrete bridges are time-varying working systems, and the corresponding maintenance strategy should be planned according to the time-varying service performance. In this work, a time-dependent reliability assessment procedure is proposed while including the non-stationarities of the vehicle load process and resistance deterioration process simultaneously, which are the two factors that significantly influence the time-varying service performance of a bridge structure. To achieve this goal, the following key tasks are conducted in sequence: (a) extreme value modelling of non-stationary vehicle load process; (b) model establishment and updating of non-stationary resistance deterioration process; (c) determination of target reliability index of a concrete bridge component in the operation stage; (d) performing time-dependent reliability analysis while considering the non-stationary properties. In addition, a case study is conducted to illustrate the application of the proposed procedure by considering an existing concrete bridge as an example. It is found that the proposed time-dependent reliability assessment procedure is feasible, and some critical information on the time-varying service performance of the existing concrete bridge component can be obtained, which can be further referenced in the planning of the structural inspection, management and maintenance, etc.

• Record URL:
  https://doi.org/10.1016/j.engstruct.2019.109426
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0141029619313872
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
• Supplemental Notes:
  • © 2019 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Yuan, Yangguang
  • Han, Wanshui
  • Li, Guangling
  • Xie, Qing
  • Guo, Qi
• Publication Date: 2019-10-15

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 109426
• Serial:
  • Engineering Structures
  • Volume: 197
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0141-0296
  • Serial URL: http://www.sciencedirect.com/science/journal/01410296

Subject/Index Terms

• TRT Terms: Bridge management systems; Concrete bridges; Live loads; Reliability; Time dependence
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01716858
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 18 2019 9:15AM