Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
권호 표지

Control Strategy for Seismic Responses of Cable-Stayed Bridges Using MR Fluid Dampers

MR 유체 감쇠기률 이용한 사장교의 지진응답 제어 기법

  • Jung, Hyung_-Jo (Research Assistant Professor, Dept. of Civil & Environmental Eng., KAIST) ;
  • Moon, Yeong-Jong (Graduate Student, Dept. of Civil & Environmental Eng., KAIST) ;
  • Ko, Man-Gi (Professor, Dept. of Civil Eng., Kongju National University) ;
  • Lee, In-Won (Professor, Dept. of Civil & Environmental Eng., KAIST)
  • Published : 2002.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper examines the ASCE first generation benchmark problem for a seismically excited cable-stayed bridge, and proposes a new semi-active control strategy focusing on inclusion of effects of control- structure interaction. In this study, magnetorheological (MR) fluid dampers, which belong to the class of controllable fluid dampers, are proposed as the supplemental damping devices, and a clipped-optimal control algorithm, shown to perform well in previous studies involving MR fluid dampers, is employed. The dynamic model for MR fluid dampers is considered as a modified Bouc-Wen model, which is obtained from data based on experimental results for large-scale dampers. Numerical results show that the performance of the proposed semi-active control strategy using MR fluid dampers is quite effective.

Keywords