| Concrete-filled stell tube are increasingly concerned due to their advantages,andit have been using by more and more engineering practice. However,it shows recentlythat the cracking of concerte-filled stell tube connection in some earthquakes wasmuch more worse than what people have thought of.So the mechanical properties ofthe joint of concrete-filled stell tube was widely studied by people.Circular Concrete-filled steel tube and steel beam soft steel node which carriedout to aim at the shortcoming of traditional steel moment connection based on theanalysis of benm-to-column web connections. To have an imitation analysis by usingANSYS FEM software,considering nonlinear material,nonlinear geometry, Considertheb slippage of steel tube and concrete.using Mises yield rule to analyze the new typeconnections systematically.The main contents and fruits as follows:1ã€To compare the force performance of circular Concrete-filled steel tube andsteel beam soft steel node with the traditional reinforcement ring connections,theresult shows:compared with the traditional reinforcement ring connections,thedecreasing of integrity rigidity and strength of beam-to-column web connections inthe circular Concrete-filled steel tube and steel beam soft steel node is low, thehysteretic curves are stable and show well plastic deformation ability.2〠Based on circular Concrete-filled steel tube and steel beam soft steelnode,using soft steel part from a distance to reinforcement ring connections A and thelength of soft steel parts using B are analyzed to get the impact of force performanceto the soft steel node.Based on the results,proposed reasonable value range of A andB,and seismic design proposals are put forward. |
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