クリ材を用いた梁受け金物接合部のせん断試験

摘要

To study the shear strength of timber joint composed of Chestnut (Castanea crenata Sieb. Et Zucc.) timber using template metal connector, shear test was conducted on post and beam joint. Three types of joint {Chestnut post and beam, Chestnut post and Japanese red pine (Pinus densiflora Sieb. Et Zucc.) beam, Sugi (Cryptomeria japonica, D.Don) post and Chestnut beam} were prepared for the test. Sugi post and Japanese red pine beam joint was also used as control specimen. Maximum load of joint composed of Chestnut post and beam was higher than other joints. Shear strength of joint composed of Chestnut post or beam was higher than that of Sugi post and Japanese red pine beam joint.%クリ，アカマツおよびスギを用いた梁受け金物rnによる柱-梁接合部の実大せん断試験を行い，梁rnと柱の樹種条件を変化させた接合部のせん断性能rnを比較した。その結果，柱，梁を高密度のクリ材rnとすることで，接合部の許容せん断耐力は向上すrnることが明らかとなった。また，接合部の破壊形rn態と樹種条件別の最大荷重から，今回使用した梁rn受け金物による接合部のせん断性能は柱のめり込rnみ抵抗に大きく影響を受けていると考えられた。