Estimation of maximum drift of mdof shear structures using only one accelerometer

Kangqian Xu, Akira Mita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper presents a new method to estimate maximum drifts, relative displacements between adjacent floors, of all stories of multi-degree-of-freedom (MDOF) shear structures using only one floor’s absolute acceleration time history response under the ground excitation. The absolute acceleration and relative displacement are formulated in modal coordinates and the state-space expression is derived. Then the numerical simulation for a three-story structure was conducted to verify the performance of the state-space equation. The comparison of the estimated state and input with actual values is made and shows the good agreement. In addition, the relative displacement time histories of all floors were obtained, and the errors of maximum displacements and inter-story drifts were analyzed. The robustness against environmental noise was also investigated by numerical simulations as well. The results of simulations indicate the estimation is satisfactory, and very robust against the environmental disturbance.

Original languageEnglish
Title of host publicationStructural Health Monitoring - 8th Asia Pacific Workshop on Structural Health Monitoring, 8APWSHM 2020, proceedings
EditorsN. Rajic, M. Veidt, A. Mita, N. Takeda, W.K. Chiu
PublisherAssociation of American Publishers
Pages113-120
Number of pages8
ISBN (Print)9781644901304
DOIs
Publication statusPublished - 2021
Event8th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2020 - Cairns, Australia
Duration: 2020 Dec 92020 Dec 11

Publication series

NameMaterials Research Proceedings
Volume18
ISSN (Print)2474-3941
ISSN (Electronic)2474-395X

Conference

Conference8th Asia-Pacific Workshop on Structural Health Monitoring, APWSHM 2020
Country/TerritoryAustralia
CityCairns
Period20/12/920/12/11

Keywords

  • Kalman Filter
  • Maximum Inter-Story Drift
  • Modal Coordinates
  • Shear Structure
  • State-Space Equation

ASJC Scopus subject areas

  • Materials Science(all)

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