Semi-actively Implemented Non-linear Damping for Building Isolation Under Seismic Loadings

Yun Peng Zhu, Zi Qiang Lang, Yosuke Kawanishi, Masayuki Kohiyama

Research output: Contribution to journalArticle

Abstract

It is well-known that semi-active solution can achieve building isolation with much less energy requirements than active solutions. Also, it has been shown in previous studies that compared to linear damping, non-linear damping performs better for building isolation under sinusoidal ground motions. The present study is concerned with the extension of the application of the semi-actively implemented non-linear damping to building isolation under seismic loadings. A two-degree-of-freedom (2-DOF) scaled building model is used for simulation studies. Experimental tests on a physical building model have been used to validate the effectiveness of the 2-DOF scaled building model in representing the behaviors of a physical building structure. The optimal design of the semi-actively implemented non-linear damping for building isolation under design seismic motions is then carried out using the 2-DOF scaled building model based on simulation studies. The results show that an optimal design of semi-actively implemented non-linear damping can improve the performance of building isolation under design seismic motions in terms of both absolute acceleration and inter-story drift.

Original languageEnglish
Article number19
JournalFrontiers in Built Environment
Volume6
DOIs
Publication statusPublished - 2020 Feb 26

Keywords

  • building
  • isolation
  • non-linear damping
  • seismic loadings
  • semi-active

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Building and Construction
  • Urban Studies

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