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

提出了一种由钢管包裹橡胶管组成的新型减振器。并进行了静载试验。结果表明，该减振器具有足够的吸能能力，可以作为减振器使用。并建立了减振器载荷-位移特性的估算模型。为了验证建立荷载-位移特性模型的有效性，本研究再次进行了静载试验，并对安装了减振器的基础隔震桥梁进行了动力响应分析，证明了减振器的实际使用和有效性。

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.