摘要
为减小结构损伤、提高结构抗震性能,采用新型装配式防屈曲钢板复合连梁(后文简称:新型连梁)对深圳某高层项目进行耗能减震优化设计与应用。根据结构设计需求,设计了新型连梁尺寸与构造,并给出了新型连梁的简化模拟方法。提出新型连梁布置数量不同的两个耗能减震优化方案,从结构损伤分布、层间变形、能量分析三方面与原模型进行对比分析。研究表明,合理布置新型连梁,可减小结构层间变形,降低剪力墙混凝土损伤程度,调整水平构件与竖向构件的耗能比例,优化结构地震失效模式。耗能减震效果在强震下更为显著,且耗能减震效果与新型连梁数量不呈正比,在优化设计中应合理选取新型连梁的数量。
In order to reduce the structural damage and improve the structural seismic performance,a new type of prefabricated composite coupling beam with buckling restrained steel plate was used to perform energy-dissipation design and application for a high-rise project in Shenzhen.According to the structural design requirements,the size and structure of the new coupling beam was designed,and a simplified simulation method of the new coupling beam was given.Two energy-dissipating optimization schemes with different number of new coupling beams were proposed,and the comparison analysis with the original model were carried out from the three aspects of structural damage distribution,story drift,and energy analysis.The results show that reasonable setting new coupling beams can reduce the story drift,reduce the concrete damage of the shear walls,adjust the energy dissipating ratio of the horizontal and vertical members,and optimize the structural seismic failure mode.The effect of energy dissipation by new coupling beams is more significant under strong earthquakes,and the effect of energy dissipation is not proportional to the number of new coupling beams.In the process of energy-dissipation design,the number of new coupling beams should be selected reasonably.
作者
刘鹏远
李东风
饶少华
葛磊
罗志聪
黄晨光
李祚华
滕军
LIU Pengyuan;LI Dongfeng;RAO Shaohua;GE Lei;LUO Zhicong;HUANG Chenguang;LI Zuohua;TENG Jun(Harbin Institute of Technology,Shenzhen 518055,China;Shenzhen Talent Housing Group Co.,Ltd.,Shenzhen 518000,China;China Construction Fourth Engineering Division Co.,Ltd.,Guangzhou,510000,China)
出处
《建筑结构》
CSCD
北大核心
2020年第S02期293-298,共6页
Building Structure
基金
国家重点研发计划(2016YFC0101102)
国家自然科学基金项目(51538003,51978224)
深圳市科技计划基础研究项目(JCYJ20170811160003571,JCYJ20180508152238111)
关键词
高层结构
耗能减震分析
装配式复合连梁
弹塑性时程分析
high-rise structure
energy dissipation analysis
prefabricated composite coupling beam
elastoplastic time history analysis
