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作者:

Wang, Meng (Wang, Meng.) | Nagarajaiah, Satish (Nagarajaiah, Satish.) | Sun, Fei-Fei (Sun, Fei-Fei.)

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EI Scopus SCIE

摘要:

This paper deals with the multi-hazard vibration reduction of high-rise buildings in resisting earthquakes and winds, emphasizing on the optimization of supplemental negative stiffness damped outrigger (NSDO) system. Since the risks of wind and earthquake are both inevitable, the competing relationship between two performance indexes-harmful inter-story drift and structural acceleration-of tall buildings with supplemental NSDO are carefully studied concerning along wind, cross wind, and earthquake loading. As an energy dissipation outrigger system, NSDO amplifies the deformation of viscous damper at the outrigger ends, thus achieving higher efficiency as compared to conventional damped outrigger (CDO) systems. The resultant superiority of NSDO in resisting multi-hazard is then verified. For example, NSDO provides a further reduction of 25.6% in seismic harmful drift and an extra 22.3% decrease in cross wind acceleration response. In the meantime, NSDO only uses about 1/3 of the outrigger damping coefficient as compared to CDO systems. Moreover, NSDO optimized for multi-hazard can achieve a good tradeoff design without compromising too much for one specific hazard.

关键词:

Damped outrigger Negative stiffness Multi-hazard optimization Tall buildings Tradeoff design

作者机构:

  • [ 1 ] [Wang, Meng]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Meng]Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China
  • [ 3 ] [Sun, Fei-Fei]Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China
  • [ 4 ] [Nagarajaiah, Satish]Rice Univ, Dept Civil & Environm Engn, Houston, TX 77005 USA

通讯作者信息:

  • [Sun, Fei-Fei]Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China

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来源 :

JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS

ISSN: 0167-6105

年份: 2021

卷: 218

4 . 8 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:87

JCR分区:1

被引次数:

WoS核心集被引频次: 45

SCOPUS被引频次: 52

ESI高被引论文在榜: 0 展开所有

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