Retrofit of Wooden Temple Based on Long-Life Eco-Friendly Concept

摘要

Traditional wooden temples in Japan are constructed by construction methods which use naturalrnmaterials and allow easy teardown. By extending the life of buildings by periodical repair, woodenrntemples produce only low environmental loads. The roof tiles are replaced in every hundred yearsrnso that the waterproof property is maintained, and the whole building is torn down and damagedrnparts are replaced in every several hundred years so that the structural performance is assured.rnWhen an earthquake occurs, easily replaceable parts resist, and the buildings become toughrnantiseismic structures due to their deformation capacity given by wood denting.rnThis paper introduces a repair case of the world's largest wooden temple. In this case, the antiseismicrncapacity is reevaluated by the modern technology, and then efficient reinforcement isrnachieved. In addition, deteriorated roof tiles are utilized as a component of another useful material.