期刊文献+

基于能量平衡规律研究低层钢框架结构损伤分布机理 被引量:5

Application of the Energy Balance Law to Analysis the Distribution Mechanism of the Damage of the Low-rise Steel Frame Structure
原文传递
导出
摘要 针对低层钢框架损伤分布机理不明确,以钢框架的强柱系数、柱脚形式及首层剪重比为主要研究参量,建立16个典型低层钢框架模型;通过强震作用下的弹塑性时程分析,基于能量平衡原理研究低层钢框架楼层以及构件的损伤分布机理.研究结果表明:罕遇地震输入能量的80%以上靠钢框架构件塑性变形来吸收;低层钢框架首层变形集中,为防止首层破坏,柱脚刚接时强柱系数要求1.7以上,柱脚铰接时,建议强柱系数大于2.当强柱系数大于3时,各层层间位移分布基本均匀,然而刚接梁地震需求性能增大,在设计中对梁高的控制及梁柱节点连接的工艺要求较高. Aiming to the fact that it was still ambiguous for the damage distribution mechanism of low- rise steel frame structure, 16 typical low-rise steel frame models were established based on the main research parameters including strong-column factor, column base form and shear-weight ratio of the first floor. Through elastic-plastic time-history analysis under earthquake, the damage distribution mechanism of the low-rise steel frame structure and component was studied by energy balance law. The results show that more than 80% input energy of severe earthquake is absorbed by the component plastic deformation of steel frame structure; The first floor deformation is centralized for low-rise steel frame, the strong-column factor is not less than 1.7 in order to prevent the first floor damage ; When the column base is hinge joint, the strong- column factor is advised greater than 2. When the strong-column factor is greater than 3, the distribution of inter-story displacement for every floor is nearly balance, however, the seismic performance requirements of rigid-joint column is controlling the height of the beam and joining the increased, the technological requirements of beam-column is also increased.
机构地区 桂林理工大学
出处 《应用基础与工程科学学报》 EI CSCD 北大核心 2017年第2期332-346,共15页 Journal of Basic Science and Engineering
基金 国家自然科学基金项目(51409051,51368014) 广西自然科学基金项目(2014GXNSFBA118256) 广西矿冶与环境科学试验中心资助项目(KH2012YB027)
关键词 低层钢框架 强柱系数 输入能量速度换算值 累积塑性延性比 low-rise steel frame strong-column factor the speed conversion value of earthquakeinput energy accumulated plastic ductility ratio
  • 相关文献

参考文献8

二级参考文献78

共引文献121

同被引文献13

引证文献5

二级引证文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部