Creep Effect and Time-Varying Reliability Analysis of Prestressed Continuous Rigid Frame Bridge
|
|
|||||||||||
Bibliographic Details
| Author(s): |
Junyi Xiao
(Changsha University of Science & Technology, Changsha, CA, China)
Jianxin Peng (Changsha University of Science & Technology, Changsha, CA, China) Zhanghong Liu (Changsha University of Science & Technology, Changsha, CA, China) Jianren Zhang (Changsha University of Science & Technology, Changsha, CA, China) |
||||
|---|---|---|---|---|---|
| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
|
|||||
| Page(s): | 724-732 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/nanjing.2022.0724 | ||||
| Abstract: |
This paper studies the long-term shrinkage and creep performance of C60 low shrinkage and low creep high performance concrete used in the main bridge of continuous rigid frame box girder bridge. The finite element model of the bridge is established by finite element simulation software. Firstly, the shrinkage and creep effect of the main bridge over a long time is calculated and analyzed by using the shrinkage and creep model of C60 low shrinkage and low creep concrete and different specification models of ordinary C60 concrete. The effects of shrinkage and creep on the internal force, stress, deflection and prestress loss of the main beam of the bridge under different loading ages are studied. Finally, combined with the prior information of concrete materials and data sample information, bayes method is used to predict the service reliability of the bridge. The research results can provide guidance for the long-term shrinkage performance and creep reliability of the bridge. |
||||
| Keywords: |
failure probability bridge reliability C60 low shrinkage and low creep high performance concrete Shrinkage creep effect Bayesian updating method
|
||||
| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
||||