Effct of Deterioration of Structural Members and Joints on Earthquake Response of Japanese Traditional Wooden Temple

Abstract eng:
This paper examined the effect of aged deterioration of structural members and joints on the earthquake response of a traditional Japanese wooden temple in Kyoto. First, the effect of deterioration at the joints was studied. Push-over analysis and nonlinear earthquake response analysis showed that deterioration of the beam-column joints decreased the ultimate horizontal resistant force, and increased the maximum response displacement of the temple. Next, the effect of deterioration due to age of the structural member was studied. The structural members of the objective temple are made of old zelkova wood, the Young's modulus of which decreased continuously once it has been used as a structural member 350 years ago. Static and dynamic analyses showed that the smaller Young’s modulus decreased the ultimate horizontal resistant force and increased the maximum response displacement of the temple. However, the risk of total collapse is considered to be low if the deterioration ratio of the modulus is linear to the ages. wooden structure, aged deterioration, push-over analysis, cultural heritage nonlinear earthquake response analysis

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