A Study on Applicability of Hysteretic Damper to Existing Rail Way Viaduct Structure

When considering social function of railway viaduct as infrastructure, less damage control is expected even against significant earthquake such as the Tokai and the Tonankai Earthquake. Response control technique with damping device is highly expected as alternative solution. In responding, authors have developed Arc Shaped Dampers. In order to investigate applicability of proposed damper to rail way viaduct structures, seismic retrofit design and nonlinear analysis were conducted focusing on failure type and response control. Following results were obtained: the existing structure is failed in shear, while retrofitted structure assures flexural yielding ductile behavior.