Torsion effects on the seismic performance of adjacent mass-irregular buildings connected by viscous dampers

IF 4.1 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Bulletin of Earthquake Engineering Pub Date : 2025-06-11 DOI:10.1007/s10518-025-02195-w

MohammadHossein Yarali, Farshid Fathi

{"title":"Torsion effects on the seismic performance of adjacent mass-irregular buildings connected by viscous dampers","authors":"MohammadHossein Yarali, Farshid Fathi","doi":"10.1007/s10518-025-02195-w","DOIUrl":null,"url":null,"abstract":"<div><p>Many numerical studies have proved that connecting adjacent buildings by passive dampers can effectively improve the seismic performance of both connected regular buildings, however, its effect on irregular buildings is unknown. The torsion effect on the seismic performance of two three-dimensional adjacent buildings, including 8- and 12-story RC special moment-resisting frame buildings connected by viscous dampers was investigated in this paper, considering a mass eccentricity variable from 0-20% of the buildings’ plan dimension. The torsion effect on the control system was evaluated by comparing the maximum top-floor displacement and fragility curves of the connected and corresponding unconnected buildings. The results were derived by nonlinear time history analysis and incremental dynamic analysis under 22 far-field ground motions using the OpenSees software. According to the results obtained, the suggested control system enhances the seismic performance of both connected irregular buildings by reducing the maximum top-floor displacement and enabling the buildings to withstand higher values of ground motion intensity.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 10","pages":"4069 - 4089"},"PeriodicalIF":4.1000,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10518-025-02195-w","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Many numerical studies have proved that connecting adjacent buildings by passive dampers can effectively improve the seismic performance of both connected regular buildings, however, its effect on irregular buildings is unknown. The torsion effect on the seismic performance of two three-dimensional adjacent buildings, including 8- and 12-story RC special moment-resisting frame buildings connected by viscous dampers was investigated in this paper, considering a mass eccentricity variable from 0-20% of the buildings’ plan dimension. The torsion effect on the control system was evaluated by comparing the maximum top-floor displacement and fragility curves of the connected and corresponding unconnected buildings. The results were derived by nonlinear time history analysis and incremental dynamic analysis under 22 far-field ground motions using the OpenSees software. According to the results obtained, the suggested control system enhances the seismic performance of both connected irregular buildings by reducing the maximum top-floor displacement and enabling the buildings to withstand higher values of ground motion intensity.

查看原文本刊更多论文

粘滞阻尼器连接的相邻质量-不规则建筑物的扭转效应

许多数值研究证明，用被动阻尼器连接相邻建筑可以有效地改善连接的规则建筑的抗震性能，但对不规则建筑的影响尚不清楚。考虑质量偏心率为建筑平面尺寸的0-20%，采用粘性阻尼器连接的8层和12层钢筋混凝土特殊抗弯矩框架结构，研究了扭转对相邻两个三维建筑抗震性能的影响。通过对比连体和非连体建筑的最大顶楼位移和易损性曲线，评价了扭转对控制系统的影响。利用OpenSees软件对22次远场地震动进行非线性时程分析和增量动力分析，得出了结果。根据得到的结果，建议的控制系统通过降低最大顶楼位移和使建筑物能够承受更高的地震动强度值来提高两个连接的不规则建筑物的抗震性能。

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

Bulletin of Earthquake Engineering 工程技术-地球科学综合

CiteScore

8.90

自引率

19.60%

发文量

263

审稿时长

7.5 months

期刊介绍： Bulletin of Earthquake Engineering presents original, peer-reviewed papers on research related to the broad spectrum of earthquake engineering. The journal offers a forum for presentation and discussion of such matters as European damaging earthquakes, new developments in earthquake regulations, and national policies applied after major seismic events, including strengthening of existing buildings. Coverage includes seismic hazard studies and methods for mitigation of risk; earthquake source mechanism and strong motion characterization and their use for engineering applications; geological and geotechnical site conditions under earthquake excitations; cyclic behavior of soils; analysis and design of earth structures and foundations under seismic conditions; zonation and microzonation methodologies; earthquake scenarios and vulnerability assessments; earthquake codes and improvements, and much more. This is the Official Publication of the European Association for Earthquake Engineering.