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Seismic Behavior Evaluation of Embedded Kagome Damping Device

콘크리트에 매립된 카고메 감쇠시스템의 내진거동평가

Hur, Moo-Won;Lee, Sang-Hyun;Kim, Jong-Ho;Hwang, Jae-Seung
허무원;이상현;김종호;황재승

  • Received : 2018.11.23
  • Accepted : 2019.02.27
  • Published : 2019.03.01

Abstract

Recently, there has been a tendency to improve seismic performance of building structure by installing a steel hysteretic damping device which is economically efficient and easy to install and maintain. However, for a reinforced concrete building, a set of complicated connecting hardware and braces to fix the steel hysteretic damping device yields deteriorated reliability in damping performance. Therefore, this study presents a method of directly embedding a Kagome damper, which was investigated in previous researches, into a concrete structure without additional connecting hardware. Moreover, in this study, a series of experiments conducted to provide a basis of the Kagome damper by confirming the seismic behavior for various embedded lengths. As a result, in a group of the embedded length of $1.0l_d$, the dampers were pulled out, while concrete breakout occurs. In a group of $2.0l_d$, neither pull-out nor concrete breakout occurred, while the dampers show stable behavior. Moreover, the buried length of $2.0l_d$ has 1.3 times better energy dissipation capacity. The system presented in this study can reduce the cost and period for installing, omitting making additional hardware.

Keywords

Embeded kagome damper;Multi-axis Isotropic;Energy dissipation;Stiffness degradation

Acknowledgement

Supported by : 한국연구재단