Abstract
This paper continues the previous study on clarifying the time-dependent behaviour of Beipanjiang Bridge ‒ a reinforced concrete arch bridge with concrete-filled steel tubular stiffened skeleton. The obtained prediction models and the Finite Element Models were used to simulate the long-term behaviour and stress redistribution of the concrete arch bridge. Three-dimensional beam elements simulated the stiffened skeleton and surrounding concrete. Then, a parameters study was carried out to analyse the time-dependent behaviour of the arch bridge influenced by different concrete creep and shrinkage models. The simulation results demonstrate that concrete creep and shrinkage have a significant influence on the time-dependent behaviour of the concrete arch bridge. After the bridge completion, the Comite Euro-International du Beton mean deviation of displacements obtained by 1990 CEBFIP Model Code: Design Code model and fib Model Code for Concrete Structures 2010 model are 3.4%, 31.9% larger than the results predicted by the modified fib Model Code for Concrete Structures 2010 model. The stresses between the steel and the concrete redistribute with time because of the concrete long-term effect. The steel will yield if the fib Model Code for Concrete Structures 2010 model is used in the analysis. The stresses in a different part of the surrounding concrete are non-uniformly distributed.
Highlights
After the pre-stressed concrete bridge collapsed in Palau (Bažant, Hubler, & Yu, 2011; Zhang, 2015), the time-dependent behaviour of long-span concrete box girder arch bridge with Concrete-Filled Steel Tubular (CFST) stiffened skeleton has attracted much attention of scholars (Ma, Xiang, & Xu, 2013; Ma, Xiang, Zhao, Xu, & Xie, 2012; Xie, 2012)
It means that the extremal shrinkage or creep strains and the intermediate values in time t are significant for evaluating the time-dependent behaviour of the concrete arch bridge (Al-Manaseer & Prado, 2015)
Based on the modified fib Model Code for Concrete Structures 2010 model and the Finite Element Model established on the computational program, the long-term behaviour of Beipanjiang Bridge was studied
Summary
After the pre-stressed concrete bridge collapsed in Palau (Bažant, Hubler, & Yu, 2011; Zhang, 2015), the time-dependent behaviour of long-span concrete box girder arch bridge with Concrete-Filled Steel Tubular (CFST) stiffened skeleton has attracted much attention of scholars (Ma, Xiang, & Xu, 2013; Ma, Xiang, Zhao, Xu, & Xie, 2012; Xie, 2012). For CFST bridge, the creep behaviour (Wang, Ma, Han, & Deng, 2013; Yang, Cai, & Chen, 2015) was studied based on the Finite Element Model (FEM) or experimental study. The time-dependent behaviour analysis of a concrete arch bridge is few reported in the literature from an experimental aspect This task is pursued in computational programs for long-time creep behaviour analysis of Beipanjiang Bridge. The calculated results were compared with different predictions by various prediction models
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
