Proposal of Various Wooden Portal Frames Contribute toCO2 Reduction and Analyses on Enhancement Mechanism of Their Structural Performance

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As a method of fixing CO_2 for long period, it is effective to make not only residential house but also large-scale public buildings to wooden structures. In fact, a "Law to promote the wooden low-rise public buildings" was enacted in 2006 in Japan. In cooperative with this law, this study intended to develop an innovative joint system which has high strength, high stiffness and high ductile performance that can survive even devastating earthquake without collapse and after then can reusable easily. We could make sure that this joint system could be applied safely and securely not only to residential wooden house but also large-scale three storey laminated timber frame structures.