Experimental study on hysteretic behavior of new type aluminum alloy flower-gusset composite joint
As the most commonly used joint form of aluminum alloy single-layer latticed shell,gusset joint mainly connects the upper and lower cover plates with the flange of aluminum alloy beam through bolts,but there is no connection at the web,which leads to the failure of this kind of joint to fully transfer the load of beam.In order to make up for the deficiency of gusset joint,a new type of aluminum alloy flower-gusset composite joint(FGC joint)was proposed,and the hysteretic behavior of FGC joint was verified by hysteretic test.The test results show that the hysteretic curve of FGC joint includes four stages:elastic stage,bolt sliding stage,bearing stiffness degradation stage and failure stage,but there is no obvious strength degradation stage.By comparing the test results of gusset joints and FGC joints,it can be found that FGC joints have better bearing capacity,deformation capacity and energy dissipation capacity.With the increase of cover plate thickness,the ultimate load of FGC joint increases,while the energy dissipation capacity decreases.With the increase of the radius of the upper and lower cover plates,the ultimate load and energy dissipation capacity of FGC joints gradually increase.When the thickness of the cover plate increases,the effect of increasing the stiffness of the rosette slot is reduced on the hysteretic behavior of FGC joints.
NETL
NSTL
万方数据
维普
