Component-Based Modeling for Steel and Composite Beam-Column Joints Subjected to Quasi-Static and Impact Loads under Column Removal Scenarios

This paper describes a component-based modeling approach for bare steel and composite beam-column joints subjected to quasi-static and impact loads under column removal scenarios. Two types of beam-column joints, viz. fin plate and welded unreinforced flange with bolted web, were simulated using the component-based modeling approach. The beam-column joints were discretized into individual springs consisting of various components. Material and geometry of the components were used to determine mechanical properties and failure criteria of the springs. After that, the springs were assembled together in a finite element package ABAQUS and component-based models were built. The joint models were validated against test results under quasi-static and impact loading scenarios. It was found that the component-based modeling approach performed well for both scenarios, with most of the relative errors less than 10%. Structural behavior of beam-column joints, including the development of load, axial force and bending moment for quasi-static loading scenario, as well as the development of displacement, axial force and bending moment for impact loading scenario could be captured by numerical simulations. The assumptions and limitations of the proposed modeling approach are presented as well.