Correlation-Based Estimation Method for Cable-Stayed Bridge Girder Deflection Variability under Thermal Action

Thermal actions have a great influence on the girder deflection variability of long-span cable-stayed bridges. The main objective of this study is to investigate the variability of the bridge girder deflection under thermal actions. A monitoring-based analysis of thermal actions and temperature-induced bridge girder deflection for a combined highway and railway cable-stayed bridge has been carried out; the correlation between the girder deflections at different positions is analyzed; a detailed analysis on the correlation between the structural temperature and the girder deflections has also been performed. Furthermore, the double thresholds with a specific probability for the deflection estimates are proposed. It is revealed that a strong linear relationship exists between the structural temperature and girder deflections. The proposed method can provide good estimates of the bridge girder deflections based on long-term monitoring temperature data.

• Record URL:
  https://doi.org/10.1061/(ASCE)CF.1943-5509.0001212
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08873828
• Supplemental Notes:
  • ©2018 American Society of Civil Engineers.
• Authors:
  • Yang, Dong-Hui
  • Yi, Ting-Hua
  • Li, Hong-Nan
  • Zhang, Yu-Feng
• Publication Date: 2018-10

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04018070
• Serial:
  • Journal of Performance of Constructed Facilities
  • Volume: 32
  • Issue Number: 5
  • Publisher: American Society of Civil Engineers
  • ISSN: 0887-3828
  • Serial URL: http://ascelibrary.org/toc/jpcfev/27/1

Subject/Index Terms

• TRT Terms: Cable stayed bridges; Deflection; Girder bridges; Long span bridges; Structural health monitoring; Temperature measurement; Thermal stresses
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Railroads;

Filing Info

• Accession Number: 01679618
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Aug 29 2018 9:31AM