Seismic Behavior Analysis On Steel Frame Structures Using High-strength Bolted Splices As Energy Dissipation Joints

Reserch about splice joint has suggested that if high-strength bolt splice joint of steel beam in rigid steel frame is designed not stronger, it can be used to absorb earthquake energy by friction. The influence on aseismatic performance of frame construction using high-strength bolted splices as energy dissipation joints is studied by elastoplastic time-history analysis.According to the experimental study of splice joint, two typical hysteretic models of different strength splice joint are shown in the paper, real splice joint is simulated by link element, and hysteretic models are used to define property of link element. Hysteretic behavior of test member is simulated to verify the effectiveness of the model. The hysteretic model is used to simulae splice joint and elastoplastic time-history analysis of frame construction with SAP2000 is in order to obtain structure response, structure plastic hinge distribution and time-history response of link element under earthquake action and then study the influence of energy-dissipated splice joint on aseismatic performance of structure.The result of the study show that using present hysteretic model defines link element property, numerical simulation is in accord with test curve, so it does well in reflecting energy-dissipated characteristics. Frame construction with energy-dissipated splice joint can decrease base shear effectively without vertex displacement increase observably. Comparing to rigid model and double broken line model, it can resist greater earthquake action and better structure aseismatic performance,...