Seismic resilience of RC frame-shear wall structure equipped with PDYBRB, BRB, and VFD

IF 3.9 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-03-15 DOI:10.1016/j.istruc.2025.108664

Qianxin Wen , Linlin Xie , Cantian Yang , Xinyu Wang

{"title":"Seismic resilience of RC frame-shear wall structure equipped with PDYBRB, BRB, and VFD","authors":"Qianxin Wen , Linlin Xie , Cantian Yang , Xinyu Wang","doi":"10.1016/j.istruc.2025.108664","DOIUrl":null,"url":null,"abstract":"<div><div>Enhancing the seismic resilience of critical urban buildings (e.g., medical facilities) is crucial. These buildings typically utilize reinforced concrete frame–shear wall structures (RCFSSs). Damping technology serves as an effective approach to realize this objective. However, various damper may have different impacts on improving the seismic resilience. Hence, the aim of this study is to compare the seismic resilience of RCFSS equipped with conventional dampers (buckling-restrained brace (BRB) and viscous fluid damper (VFD)) and novel dampers (parallel double-stage yielding buckling-restrained brace (PDYBRB)), to demonstrate the potential advantages of PDYBRB in improving the seismic resilience. Full-scale tests for the PDYBRB were conducted and a simplified simulation method was validated against the test data, laying the foundation for evaluating the seismic performance of structure. One RCFSS, one RCFSS equipped with BRB (RCFSSBRB), one RCFSS equipped with VFD (RCFSSVFD), and three RCFSSs equipped with PDYBRB (RCFSSPDYBRBs) were designed, and the corresponding seismic responses and resilience were analyzed and compared. The seismic performance of the structure was significantly improved after using PDYBRB. PDYBRB reduced the maximum inter-story drift ratio (MIDR) of RCFSS by up to 41.67 % under design basis earthquake (DBE) and 44.16 % under maximum considered earthquake (MCE), showing a considerable improvement compared to VFD (30.56 % under DBE and 32.47 % under MCE) and BRB (16.67 % under DBE and 38.96 % under MCE). For maximum absolute floor acceleration (MAFA), PDYBRB achieved better control compared to VFD and BRB under both DBE and MCE. The PDYBRB realized optimal control over the MIDR and MAFA during both DBE and MCE. BRB and VFD enhanced the seismic resilience of RCFSS from level 0 to level 1, while all PDYBRB cases reached level 2 due to the simultaneous control of both MIDR and MAFA. Compared with VFD and BRB, PDYBRB exhibited notable benefits in improving the seismic resilience of RCFSS. This research can provide an alternative solution for improving the seismic resilience of buildings through PDYBRB.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"75 ","pages":"Article 108664"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-15","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/S2352012425004783","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

Enhancing the seismic resilience of critical urban buildings (e.g., medical facilities) is crucial. These buildings typically utilize reinforced concrete frame–shear wall structures (RCFSSs). Damping technology serves as an effective approach to realize this objective. However, various damper may have different impacts on improving the seismic resilience. Hence, the aim of this study is to compare the seismic resilience of RCFSS equipped with conventional dampers (buckling-restrained brace (BRB) and viscous fluid damper (VFD)) and novel dampers (parallel double-stage yielding buckling-restrained brace (PDYBRB)), to demonstrate the potential advantages of PDYBRB in improving the seismic resilience. Full-scale tests for the PDYBRB were conducted and a simplified simulation method was validated against the test data, laying the foundation for evaluating the seismic performance of structure. One RCFSS, one RCFSS equipped with BRB (RCFSSBRB), one RCFSS equipped with VFD (RCFSSVFD), and three RCFSSs equipped with PDYBRB (RCFSSPDYBRBs) were designed, and the corresponding seismic responses and resilience were analyzed and compared. The seismic performance of the structure was significantly improved after using PDYBRB. PDYBRB reduced the maximum inter-story drift ratio (MIDR) of RCFSS by up to 41.67 % under design basis earthquake (DBE) and 44.16 % under maximum considered earthquake (MCE), showing a considerable improvement compared to VFD (30.56 % under DBE and 32.47 % under MCE) and BRB (16.67 % under DBE and 38.96 % under MCE). For maximum absolute floor acceleration (MAFA), PDYBRB achieved better control compared to VFD and BRB under both DBE and MCE. The PDYBRB realized optimal control over the MIDR and MAFA during both DBE and MCE. BRB and VFD enhanced the seismic resilience of RCFSS from level 0 to level 1, while all PDYBRB cases reached level 2 due to the simultaneous control of both MIDR and MAFA. Compared with VFD and BRB, PDYBRB exhibited notable benefits in improving the seismic resilience of RCFSS. This research can provide an alternative solution for improving the seismic resilience of buildings through PDYBRB.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

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.