�@ Œf�ÚŽGŽ��i˜a�j�F “ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€�u‰‰�W Vol�F 6Šª ”N�F 1982”N •Å�F 913-920•Å ’˜ŽÒ�i˜a�j�F - ƒ^ƒCƒgƒ‹�i˜a�j�F - �´˜^�i˜a�j�F
- ƒL�[ƒ��[ƒh�i˜a�j�F - Œf�ÚŽGŽ��i‰p�j�F PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒ�i‰p�j�F Isao SAKAMOTO, Yoshimitsu OHASHI ƒ^ƒCƒgƒ‹�i‰p�j�F RACKING TESTS OF WOODEN FRAMES WITH LATH-MORTAR FINISH AS NON-STRUCTURAL WALLS �´˜^�i‰p�j�F
Lath-mortar walls or wooden frames with lath-mortar finish are widely applied to wooden structures and others in Japan. But there have been few studies [l]on the behavior of them during earthquakes. Racking tests on 32 specimens of 3 major construction types of lathmortar walls were made. The experiments were carried out under some various conditions, namely, 3 different sizes of fasteners, 3 variations of loading process, 3 conditions of restriction on mortar movement. The results are as follows: (1) The order of the ductility of the specimens by 3 construction types is sheet-lath, wire-lath and metal-lath. (2) The ductility of lath-mortar walls mainly depends on the length of the fasteners. (3) After only several loading cycles, the strength of the wall with metal-lath dropped down to 1/4 of the initial value. (4) The influence due to the size and the spacing of fasteners was not clear. (5) It is probable that un-rotatable walls would fall in smaller displacement as compared with un-restricted walls. ƒL�[ƒ��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F - ‹æ•ª �@�@�@ˆÏˆõ‰ï˜_•¶�W