[1]曹家乐,马恺泽,刘房添.超高性能混凝土框架-核心筒抗震性能研究[J].华南地震,2022,(01):104-112.[doi:10.13512/j.hndz.2022.01.14]
 CAO Jiale,MA Kaize,LIU Fangtian.Study on Seismic Behavior of Ultra-high Prformance Concrete Frame-core Tube[J].,2022,(01):104-112.[doi:10.13512/j.hndz.2022.01.14]
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超高性能混凝土框架-核心筒抗震性能研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年01期
页码:
104-112
栏目:
土木工程防震减灾
出版日期:
2022-03-30

文章信息/Info

Title:
Study on Seismic Behavior of Ultra-high Prformance Concrete Frame-core Tube
文章编号:
1001-8662(2022)01-0104-09
作者:
曹家乐马恺泽刘房添
长安大学,西安 710061
Author(s):
CAO Jiale12MA Kaize12LIU Fangtian12
1.Changan University , Xi’2.an 710061, China
关键词:
超高性能混凝土框架-核心筒结构增量动力分析易损性曲线
Keywords:
Ultra-high performance concrete UHPC frame-core tube structure Incremental dynamic analysisVulnerability curve
分类号:
TU375
DOI:
10.13512/j.hndz.2022.01.14
文献标志码:
A
摘要:
通过有限元软件OPENSEES分别建立了钢筋混凝土(RC)框架-核心筒结构和超高性能混凝土(UHPC)框架-核心筒结构模型,从美国太平洋地震研究中心(PEER)选取30条地震波,并选择S(aT1)和θmax作为地震动强度指标和结构损伤指标,对结构进行增量动力分析(IDA)和易损性分析。结果表明,建立的模型能够较好的模拟结构在地震作用下从弹性状态到倒塌状态的全过程;与RC框架-核心筒结构相比,UHPC框架-核心筒结构的最大层间位移角有所减小;两种结构的增量动力分析曲线簇较为离散,但其发展趋势一致;地震强度较小时,结构的增量动力分析曲线斜率较大,之后随着地震强度的增大而缓慢下降;罕遇地震作用下,UHPC框架-核心筒结构的倒塌概率小于5%、结构抗倒塌储备系数为5.05,表明其具有较强的抗倒塌能力,满足“大震不倒”的抗震设防目标。
Abstract:
The reinforced concrete and ultra-high performance concrete frame-core tube structure model were established respectively by finite element software OPENSEES, and 30 seismic waves were selected from the Pacific Earthquake Engineering Research (PEER) center. Sa (T1) and θmax were selected as the ground motion intensity index and structural damage index,and incremental dynamic analysis (IDA) and vulnerability analysis were performed on the structure. The results show that:the established model can better simulate the whole process of the structure from elastic state to collapse state under earthquake; compared with the RC frame-core tube structure,the maximum inter-storey displacement angle of the UHPC frame-core tube structure is reduced. The curve cluster of incremental dynamic analysis of the two kinds of structure are relatively discrete, but the general trend are the same. The slope of the incremental dynamic analysis curve was high when the earthquake intensity is small and then slowly decreases with the increase of the earthquake intensity. Under rare earthquakes, the collapse probability of UHPC frame-core tube structure is less than 5% and the collapse reserve coefficient of the structure reaches 5.05, which indicates that it has strong anti-collapse ability and meets the anti-seismic fortification goal of "not falling in a big earthquake".

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备注/Memo

备注/Memo:
收稿日期:2021-06-15
基金项目:国家自然科学基金(51578077);陕西省自然科学基金(2017JM037);中央高校基本科研业务费(31088171009)联合资助。
作者简介:曹家乐(1996-),男,硕士研究生,主要从事结构抗震性能研究。E-mail:caijiale827@163.com
通信作者:马恺泽(1981-),男,副教授,主要从事结构抗震性能研究。E-mail:topmkz@126.com
更新日期/Last Update: 2022-03-30