罕遇地震作用下某超限大悬挑结构弹塑性时程分析  

THE ELASTO-PLASTIC TIME HISTORY ANALYSIS OF AN OVER-LIMIT LARGE CANTILEVER STRUCTURE UNDER MAJOR EARTHQUAKE

作　　者：陈刚 金波[1] 吴建华[2] CHEN Gang;JIN Bo;WU Jianhua(Hangzhou Polytechnic,Hangzhou 311402,China;Zhejiang University of Science and Technology,Hangzhou 310023,China)

机构地区：[1]杭州科技职业技术学院,杭州311402 [2]浙江科技学院,杭州310023

出　　处：《低温建筑技术》2023年第7期118-121,127,共5页Low Temperature Architecture Technology

摘　　要：随着经济发展,高层结构越来越复杂,工程中多项不规则、特别不规则的超限结构越来越多,文中对某超限大悬挑结构进行罕遇地震作用下的动力弹塑性时程分析,分析结果表明,除了2层部分钢梁、部分框架柱、局部楼板属于轻微或轻度损伤性能水平,大部分主体框架结构构件、楼板和大悬挑钢桁架处于无损坏性能水平;1层个别偏置的剪力墙受压损伤严重,需要加大截面。分析弹塑性时程计算结果,表明结构能满足“大震不倒”的抗震设防要求,为以后类似项目提供参考。With the development of the economy,high-rise structures are becoming more and more complex,and there are more and more irregular and particularly irregular out of code structures in engineerings.Dynamic elasto-plastic time history analysis under major earthquakes is conducted.The calculation results show that some steel beams,some frame columns on the second floor,and local floors slabs belong to the performance level of slight or mild damage;most of the main frame structural members,floor slabs,and large cantilever steel trusses are in the performance level of no damage.Only a few shear wall on the first floor is seriously damaged under compression,and the section needs to be enlarged.The analysis indicates that the structure meets the seismic fortification requirements of no collapse under major earthquakes,providing reference for similar projects in the future.

关 键 词：动力弹塑性时程分析 超限结构 性能水平 损伤因子 

分 类 号：TU352.1[建筑科学—结构工程]