RESPONSE EVALUATION OF HIGHWAY BRIDGE CONSIDERING VARIED TYPES OF MODELING FOR STRUCTURAL CONTROL DAMPER

Abstract

Friction dampers with hysteretic damping are often used for the earthquake-proof reinforcement examination such as existing highway bridges, and are frequently modeled as displacement dependent type of hysteretic rule. On the other hand, real friction dampers often have hysteretic characteristics of velocity dependent type. In this paper, the effect to dynamic response of highway bridge considering two types of modeling for friction damper was discussed. Simple multi degree of freedom model was prepared for this dynamic response analysis. As a result, it is clearly understand the response might be greatly different according to the natural period gradation of girders, and it is shown some findings about the modeling of damper.