토글 가새-고집적 마찰댐퍼를 설치한 철근콘크리트 모멘트 골조의 성능 평가

한상환^1)*, 김지영¹⁾, 문기훈¹⁾, 이창석¹⁾, 김형준²⁾, 이강석³⁾

¹⁾한양대학교 건축공학과, ²⁾서울시립대학교 건축공학과, ³⁾전남대학교 건축학부

Seismic Behavior of Reinforced Concrete Moment Frames Retrofitted by Toggle Bracing System with High Density Friction Damper

Sang Whan Han^1)*, Kim, Ji Yeong¹⁾, Moon, Ki Hoon¹⁾, Lee, Chang Seok¹⁾, Kim, Hyung Joon²⁾, Lee, Kang Seok³⁾

¹⁾Department of Architectural Engineering, Hanyang University
²⁾Department of Architectural Engineering, University of Seoul,
³⁾Department of Architecture, Chonnam National University

(Received 12 February 2014; Revised 7 April 2014; Accepted 8 April 2014)

Abstract

The friction damper can be used for improving the seismic resistance of existing buildings. The damper is often installed in bracingmembers. The energy dissipation capacity of the damping systems depends on the type of the structure, the configuration of the bracingmembers, and the property of dampers. In Korea, there are numerous low- to mid-rise reinforced concrete moment frames that wereconstructed considering only gravity loads. Those frames may be vulnerable for future earthquakes. To resolve the problem, this studydeveloped a toggle bracing system with a high density friction damper. To investigate the improvement of reinforced concrete frames afterretrofit using the developed damped system, experimental tests were conducted on frame specimens with and without the dampedsystem. The results showed that the maximum strength, initial stiffness and energy dissipation capacity of the framed with the dampedsystem were much larger than those of the frame without the damped system.

Key Words : Seismic Retrofit,Friction Damper,Toggle Brace,Energy Dissipation,Magnification Factor

: 0044-01-0018-0003-3.pdf1.14MB

Reference

Journal Abbreviation J. Earthq. Eng. Soc. Korea
Frequency Bimonthly
Doi Prefix 10.5000/EESK
Year of Launching 1997
Publisher Earthquake Engineering Society of Korea

Indexed/Tracked/Covered By

Online Submission

submission.eesk-j.or.kr

EESK