梁柱外伸端板连接的变形及耗能指标研究  

RESEARCH ON THE DEFORMATION AND ENERGY DISSIPATION INDEX OF EXTENDED END-PLATE CONNECTIONS

作　　者：张世平 孙国华[1] 金海波 刘政 王思琦 戴城 

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《钢结构》2017年第10期1-7,18,共8页Steel Construction

基　　金：国家自然科学基金项目(51578355);江苏省高等学校大学生创新创业训练计划项目(201510332006Z)

摘　　要：为量化梁柱外伸端板连接的极限变形能力及累积耗能能力,对国内外已完成的99个外伸端板连接试验试件进行了分析,基于概率统计方法定量确定了外伸端板连接的最大塑性转角、累积塑性转角、延性系数、累积延性系数、等效能量耗散系数等指标。根据统计的概率密度分布函数曲线确定的置信水平为95%的单侧置信下限值作为上述参数限值依据,所确定外伸端板连接的最大塑性转角、累积塑性转角、延性系数、累积延性系数、等效能量耗散系数分别为0.038 rad、0.43 rad、5.17、42.8和37.7。To determine the ultimate deformation capacity and cumulative hysteretic energy of the extended end-plate connections,the previous test results of 99 extended end-plate connection specimens were collected and analyzed.The probability-based method was adopted to determine the ultimate plastic rotation,ductility,cumulative plastic rotation,ductility and cumulative ductility coefficient,and equivalent hysteretic energy factor.The analytical results showed that according to the one-side 95% confidence lower limit from the probability density function curve,the ultimate plastic rotation,ductility coefficient,cumulative plastic rotation,cumulative ductility coeffient,and equivalent hysteretic energy factor of extended end-plate connections were 0.038 rad,0.43 rad,5.17,42.8,and 37.7,respectively.

关 键 词：外伸端板连接 最大塑性转角 累积塑性转角 延性系数 累积延性系数 等效能量耗散系数 

分 类 号：TU391[建筑科学—结构工程]