Development of new oil damper with spring for architectural vibration control and experimental research on structural characterization

Abstract

This paper shows test and analysis results of the new oil damper, “Oil Damper with Stiffness”. It was developed to solve some issues about seismic retrofit. There are difficulties to reinforce buildings which is designed by the Old Buildings Standards Act before 1981. Especially, many buildings have low stiffness. Therefore, it is prevailing to retrofit old building using braces and oil dampers, but this way makes many reinforced areas. It causes some problems, increasing the construction period and fee, inconvenient by blocking frames. It was confirmed that the test specimens have enough performances regarding stiffness, constant slip force, duration, etc. in test results and advantages using this damper in analyses using the factory model and the super high-rise building model.