建筑结构学报2017，Vol.38Issue(5)：52-60,9.DOI:10.14006/j.jzjgxb.2017.05.007
成束钢框筒结构罕遇地震作用下的能量反应分析
Steel bundled-tube structural energy response analysis under rare earthquake
摘要
Abstract
Elasto-plastic time-history analysis of structure under rare earthquake was used to analyze three steelbundled-tube structure models with different setbacks.Based on the energy items,distribution of energy curves under different peak acceleration waves,relation between input energy and wave acceleration,distribution of plastic energy dissipation along structural height and in structural members have been studied.The plastic energy dissipation of each single tube formed bundled-tube and the influences by vertical setback were also discussed.The results show that different peak acceleration inputs can not affect the change trend of elastic strain energy,plastic energy dissipation,damping energy consumption and proportion of kinetic energy in the input energy.When the earthquake exceeds a certain intensity,the proportion of kinetic energy and elastic strain energy in the input energy can be reduced,and the input energy can be dissipated mainly by the plastic energy dissipation of the structure.The peak acceleration of input ground motion is different,and the distribution of plastic energy dissipation along the floor is also different.The spandrel beams are the most important energy dissipation members.The energy dissipation of single tube is related to the input ground motion peak acceleration.When the input peak acceleration is large,as for models without vertical setback,energy dissipation in the middle part of the bundled-tube is less than the energy dissipation of the surrounding.Except for the single tube with large variation,the average plastic energy dissipation per floor of single tube is uniform for models with different setbacks.关键词
成束钢框筒结构/能量反应/时程分析Key words
steel bundled-tube structure/energy response/time-history analysis分类
建筑与水利引用本文复制引用
郝勇,娄宇,杜修力,温凌燕,刘博文,吕佐超..成束钢框筒结构罕遇地震作用下的能量反应分析[J].建筑结构学报,2017,38(5):52-60,9.基金项目
北京市自然科学基金项目(8122040). （8122040）
