Experimental on seismic performance of replaceable splicing steel beam-column joints with friction energy dissipation components
Based on the seismic design concept of recoverable function,a replaceable splicing steel beam-column joint with friction energy dissipation components is proposed in this paper.The joint uses both ductility and friction mechanisms for energy dissipation,which has the advantages of good ductility,controllable damage and replaceablility after damage.Two replaceable splicing steel beam-column joints specimen models and one cantilever bolted connection steel beam-column joint specimen model with the scale ratio of 1∶1.5 were designed and manufactured.The quasi-static test method was used to conduct experimental research on these joint specimens.Two replaceable splicing steel beam-column joints after failure were repaired,and then they were reloaded.The seismic performance indexes of the joint specimens under low cyclic loading,such as hysteresis curve,skeleton curve,stiffness degradation curve,strain and displacement curve,ductility and energy dissipation were obtained.The results show that the ductility and energy dissipation capacity of the proposed replaceable splicing steel beam-column joint are better than that of the cantilever bolted connection steel beam-column joint.The plastic damage is mainly concentrated in the replaceable components,and the main components of the replaceable splicing steel beam-column joints are basically maintained in the elastic working range.The repaired joints can almost completely restore the seismic performance and meet the requirements of replaceability.
structural engineeringrecoverable functionreplaceable splicing steel beam-column jointseismic performancefriction energy consumptionquasi-static test
万方数据
维普
