Development and Analysis of the Control Effect of a Reid Damper with Self-Centering Characteristics

Ying-Jie Kang,Ling-Yun Peng

doi:10.1155/2018/1946818

Abstract

To improve the recoverability of structures following an earthquake, a Reid friction damper with self-centering characteristics is proposed and its hysteretic behavior is studied by theoretical analysis and experimental research. The main parameters of the damper are the equivalent stiffness and energy dissipation coefficient. Based on a 10-story steel frame structure, 10 energy dissipation design schemes using the proposed Reid damper are proposed. The additional equivalent damping ratios of the 10 schemes are equal, whereas the energy dissipation coefficients of the dampers are different. The vibration control effects of the energy dissipation structures are analytically investigated under four earthquake loads. The experimental results of the friction damper are in good agreement with the theoretical results, and the hysteretic behavior of the damper follows that of a typical Reid model. The seismic response and structural damage can be reduced using any of the 10 design schemes; however, the effects are different. When the energy dissipation coefficient is in the range of 0.1–0.3, the control effect on the interstory drift is better; however, the structural acceleration response and damping force of the dampers increase. When the energy dissipation coefficient is in the range of 0.6–1.0, the energy dissipation effect of the dampers is good; however, the self-centering ability is poor. Therefore, the optimum range of the energy dissipation coefficient of a Reid damper intended for energy dissipation structures should be 0.3–0.6.

Highlights

The performance-based seismic design has been widely recognized, and scholars from various countries have conducted numerous studies on the same [1]
Residual Interstory Drift. is section mainly analyzes the control e ect of the Reid dampers on the residual interstory drift of the structure. e limit of residual interstory drift is set to 0.5%, and the structure cannot be repaired if the value exceeds this limit [33]. e analysis results show that the maximum residual interstory drift of the uncontrolled structure is 1.47% under the action of the 0.51 g Hachinohe wave, and the maximum residual interstory drifts under the other three seismic wave conditions are lower than 0.5%
By conducting a theoretical analysis and a performance experiment, we developed a passive self-centering friction damper, which can realize the Reid model, and analyzed the control e ect of a steel frame structure with Reid dampers. e following are the conclusions drawn from this study: Story

Summary

Introduction

The performance-based seismic design has been widely recognized, and scholars from various countries have conducted numerous studies on the same [1]. A self-centering damper has two parts: an energy dissipation part and a restoring force part. The hysteretic models of selfcentering dampers are ag-shaped [18] or improved agshaped [6, 19,20,21], which have attracted signi cant attention Another model that can describe the self-centering dampers is the Reid model [22,23,24]. Based on a 10-story steel frame structure, 10 energy dissipation design schemes using the Reid dampers are determined. Based on the research results, the design of the Reid damper for energy dissipation structures is proposed

Reid Hysteresis Model

Structural Analysis Model and Energy

Findings

Conclusion