建筑结构学报2017，Vol.38Issue(5)：1-10,10.DOI:10.14006/j.jzjgxb.2017.05.001
梁端填充低屈服点钢材的梁柱连接减震性能试验与损伤分析
Experimental research and damage analysis on vibration absorption performance of filled steel connection
摘要
Abstract
The design for traditional steel rigid connection cannot fulfill the desired seismic requirements.Though beam-column connections with reduced beam end section can approximately realize the concept about ‘ strong columnweak beam’,the local buckling in the weakened zone may be occur in strong earthquake and the capacity is not enough.The filled connection with low yield point steel is proposed base on the concept of earthquake resilient structure.In this connection,the weakened parts in the flange and web plate are filled with low yield point steel,and the low yield point steel firstly yields and dissipates energy sufficiently in earthquake.Hence,the damage of the main parts in the connection is minor and the low yield point steel can be replaced after the earthquake.According to the insufficiency of the existing seismic damage models,the damage model based on differential ratio of elasto-plastic dissipated energy is proposed.Low cycle loading experimental research was carried out on three types of connections which included traditional connection,beam end weakened connection and filled connection.Comprehensive assessments of damping performance are proposed through a variety of performance evaluation parameters.It is proved that the filled connection has excellent bearing capacity,ductility and energy dissipation capacity.In addition,the proposed energy damage index can represent damage evolution process and damage law.关键词
钢结构/梁柱节点/低屈服点钢材/弹塑性耗能差/损伤模型/损伤指数/耗能减震/可恢复功能结构Key words
steel structure/beam-column connection/low yield point steel/differential of elasto-plastic dissipated energy/seismic damage model/damage index/energy dissipation/resilient structure分类
建筑与水利引用本文复制引用
何浩祥,陈奎,王小兵..梁端填充低屈服点钢材的梁柱连接减震性能试验与损伤分析[J].建筑结构学报,2017,38(5):1-10,10.基金项目
国家自然科学基金项目(51478024),工程抗震与结构诊治北京市重点实验室重点项目(USDE201403). （51478024）
