Abstract
AbstractFor long-span prestressed concrete (PSC) box-girder bridges, excessive midspan deflection because of uncertain concrete shrinkage and creep undermines driving comfort and structural safety. In this paper, a deflection control strategy is proposed on the basis of field monitoring and probabilistic finite element analysis (FEA). The time-dependent behavior of the bridge was predicted using a three-dimensional finite element model with integrated time-dependent models for creep and shrinkage. The FE model was validated or updated according to field monitored data to predict future bridge performance. Using probability density functions of variables and probabilistic analyses, uncertainties in long-term deflections were described. Finally, according to the probabilistic analysis results and the allowable deflection, the amount for deflection control was determined, and the control was conducted using backup prestressing tendons. A case study on the Jinghang Canal Bridge, a three-span continuous PSC bo...
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.
