Abstract
The authors develop a circular arc shaped spring damper in order to keep soundness and reduce damage wooden structure when the earthquake is happened. The spring damper is composed of viscoelastic material which is sandwiched by two steel plates. It is able to strengthen stiffness by the steel plates, and give a damping by viscoelastic material. The damper is available for not only wood houses, also old structures such as castles and temples, since it can be attached easily. In this paper to investigate basic properties of the viscoelastic material, adhesive strength after thermal shock tests and heating tests, and force-displacement curves are measured by using a tensile testing machine. Next, to confirm performance of the damper, force-displacement curves in several cases of frequency or heat dependence, and durability are measured by using a shanking actuator. Addition to the above tests, the tensile strength of the coach screw bolt which is used for attachment to the column and the beam is also measured for practical use. Finally, validity of the material is confirmed from these experiments.
