Seismic isolation strategy via controlled soft first story with innovative multi-stage yielding damper: Experimental and numerical insights

IF 3.9 2区 工程技术 Q1 ENGINEERING, CIVIL
Sobhan Ghasemi , Mahmood Hosseini , Shuling Hu , Amir Shahram
{"title":"Seismic isolation strategy via controlled soft first story with innovative multi-stage yielding damper: Experimental and numerical insights","authors":"Sobhan Ghasemi ,&nbsp;Mahmood Hosseini ,&nbsp;Shuling Hu ,&nbsp;Amir Shahram","doi":"10.1016/j.istruc.2024.107553","DOIUrl":null,"url":null,"abstract":"<div><div>While the presence of a soft story within a building is typically discouraged in structural engineering due to potential vulnerabilities, this research proposes a strategy that incorporates seismic isolation concepts by integrating a soft first story within the structural framework. This approach challenges traditional reluctance by demonstrating the potential benefits of such a configuration. The primary objectives are twofold: firstly, to diminish seismic responses and enhance structural resilience when subjected to earthquake forces, and secondly, to reduce construction costs as compared to conventional passive control methods. The seismic responses assessed and compared in this study encompass story displacements, story drifts, floor accelerations and base shear of the structure. Furthermore, an investigation is conducted into a replaceable or repairable shear fuse that serves as a controller in the Controlled Soft First Story (CSFS) strategy, namely, an innovative Multi-stage Steel Yielding Damper (MSYD). Notably, the numerical analysis of the introduced damper has been carried out, followed by rigorous validation testing under experimental conditions. This study elucidates the implementation of this strategy within the structural framework. The overarching principle behind employing the CSFS results in outcomes akin to those achieved with base isolation techniques. However, it distinguishes itself by significantly mitigating the construction costs around 70% associated with this system when juxtaposed with traditional base isolation systems.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"70 ","pages":"Article 107553"},"PeriodicalIF":3.9000,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352012424017065","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0

Abstract

While the presence of a soft story within a building is typically discouraged in structural engineering due to potential vulnerabilities, this research proposes a strategy that incorporates seismic isolation concepts by integrating a soft first story within the structural framework. This approach challenges traditional reluctance by demonstrating the potential benefits of such a configuration. The primary objectives are twofold: firstly, to diminish seismic responses and enhance structural resilience when subjected to earthquake forces, and secondly, to reduce construction costs as compared to conventional passive control methods. The seismic responses assessed and compared in this study encompass story displacements, story drifts, floor accelerations and base shear of the structure. Furthermore, an investigation is conducted into a replaceable or repairable shear fuse that serves as a controller in the Controlled Soft First Story (CSFS) strategy, namely, an innovative Multi-stage Steel Yielding Damper (MSYD). Notably, the numerical analysis of the introduced damper has been carried out, followed by rigorous validation testing under experimental conditions. This study elucidates the implementation of this strategy within the structural framework. The overarching principle behind employing the CSFS results in outcomes akin to those achieved with base isolation techniques. However, it distinguishes itself by significantly mitigating the construction costs around 70% associated with this system when juxtaposed with traditional base isolation systems.
采用创新型多级屈服阻尼器控制软首层的隔震策略:实验和数值分析
虽然由于潜在的脆弱性,结构工程学通常不鼓励在建筑物内设置软弱层,但本研究提出了一种策略,通过在结构框架内集成软弱第一层,将地震隔离概念融入其中。这种方法通过展示这种配置的潜在优势,对传统的不情愿态度提出了挑战。主要目标有两个:第一,减小地震反应,增强结构在地震力作用下的弹性;第二,与传统的被动控制方法相比,降低建筑成本。本研究评估和比较的地震反应包括楼层位移、楼层漂移、楼层加速度和结构的基底剪力。此外,研究还对可替换或可修复的剪力引信进行了调查,该引信可作为受控软首层(CSFS)策略的控制器,即创新的多级钢屈服阻尼器(MSYD)。值得注意的是,我们对引入的阻尼器进行了数值分析,并在实验条件下进行了严格的验证测试。本研究阐明了在结构框架内实施这一策略的方法。采用 CSFS 背后的总体原则所产生的结果与基础隔离技术所产生的结果类似。然而,与传统的基底隔离系统相比,该系统显著降低了约 70% 的施工成本,从而脱颖而出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Structures
Structures Engineering-Architecture
CiteScore
5.70
自引率
17.10%
发文量
1187
期刊介绍: Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信