Abstract
The objective of this paper is to investigate the seismic performance of welding beam strengthened with symmetrical flange plates to H-type column (WBSFPHC) after fire. The accuracy effectiveness of the calculation model was verified using the existing experimental results. Considering the application of practical engineering parameters, the column width-thickness ratio (α), ratio of beam width to column width (β), height-thickness ratio of beam web (γ), width-thickness ratio of stiffener (ε), length thickness ratio of flange plate (η) and temperature (T) were used to perform a parametric study against the post-fire seismic performance of the WBSFPHC connections. Then, 25 calculation models were established to explore hysteretic behavior, stiffness degradation, ductility and energy dissipation capacity of the WBSFPHC connection under post-fire cyclic load. The results showed that the stiffness and bearing capacity of the WBSFPHC connection were improved with the increase of the parameters β and γ, temperature had great effect on the stiffness, stress distribution, energy dissipation capacity and bearing capacity of the WBSFPHC connection. The findings can provide reference and technical support to the seismic performance design, maintenance and reinforcement of such joints after fire.
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.
