Abstract
The experimental and analytical methods were used in this research to comprehend the elastoplastic shear behavior of special-shaped Concrete-Filled Steel Tubular (CFST) joint and develop damage models for its joint under low-reversed cyclic and axial loading. It is identified that the shear failure occurs in the panel zone and the joint's shear force-lateral displacement hysteretic curves and stress distribution are obtained. The joint is divided into individual components, including webs, steel frame, and core concrete, so as to investigate the elastoplastic shear behavior of the joint at the material level. In order to accurately calculate the elastoplastic shear resistances of joint components while considering the loading and boundary conditions and interactions between web and flange limbs, the shear resistances models of the webs, steel frame, and core concrete are presented based on the analytic function of shear stress, plastic hinge damage mechanism, and concrete compression strut mechanism. Furthermore, the above models are used to develop a design calculation formula for the shear resistances, in which the plastic development of the webs, the stress state of the plastic hinges, and the shear resistance increasing factor of the concrete compression strut can be considered. Finally, a design formulation to calculate the shear capacity of the special-shaped CFST joint is put forward，and the calculated results are compared with experimental data.
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.
