Abstract
This paper shows test and analyses results of a new oil damper, “The Oil Damper with Stiffness”. It was developed to solve some issues around seismic retrofit. There are difficulties in reinforcing buildings which were designed before 1981 in accordance with The Old Buildings Standards Act and many buildings have low stiffness. Therefore, it has become common to retrofit old buildings using braces and oil dampers, but this requires many areas to be reinforced. It causes some problems relating to construction period, cost, and convenience of access. This paper confirms that the test specimens have sufficient capabilities regarding stiffness, constant slip force, durability, etc. in test results and advantages of this damper in analyses using the factory model and the high-rise building model.KeywordsOil damperViscoelastic materialSeismic retrofitHigh-Rise buildingLong-Period earthquake
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