In order to study the dynamic characteristics of prefabricated concrete dry-connected joints under earthquake,six new prefabricated joints are designed and manufactured in this paper.The in-fluence of different variables on the seismic performance of the joint is studied by changing the thick-ness of the surface bearing plate,the thickness of the steel hoop,the width of the surface bearing plate and the thickness of the steel beam flange.Based on the test results and the test phenomena dur-ing the loading process,the data are processed and fitted to calculate the skeleton curve by combining with the tri-line model.On this basis,the hysteretic curve is calculated according to the hysteretic rule.The calculated skeleton curve and hysteretic curve obtained by fitting are compared with the curve obtained by test,and the coincidence is good.It shows that the calculated skeleton curve fitted by the tri-line model can well reflect the stress characteristics of the joint;the calculated hysteretic curve obtained according to the hysteretic rule can effectively reflect the hysteretic performance of the joint.The restoring force model proposed in this paper can be used as a reference for the seismic per-formance analysis of this type of prefabricated joints.
关键词
装配式节点/贯通钢梁/三折线模型/滞回规则/恢复力模型
Key words
prefabricated joint/steel beam-through/tri-line model/hysteretic rule/restoring force model
维普
万方数据