IMPROVEMENT OF SEISMIC SAFETY OF BRIDGES USING ENERGY ABSORBING CAPACITY OF STEEL SHOCK ABSORBERS

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The authors proposed a new type of shock absorber composed of steel pipes wrapped with rubber pipes. And static loading tests were conducted. As the result, it was confirmed that the shock absorber has sufficient energy absorbing capacity and can be used for shock absorbers. And a model to estimate the load-displacement characteristics of the shock absorber proposed was constructed. In this research, static loading tests were conducted again to confirm the validity of modeling the load-displacement characteristics, the dynamic response analysis of base isolated bridge attached with the shock absorbers was conducted, and the practical use and validity of the absorbers were proved.