建物免震用の積層ゴムに関する実験的研究 : 第3報,100トン用積層ゴムの破断実験

概要

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Rubber bearings of a 980-kN rated load were tested to investigate the breaking conditions of rubber bearings whose top and bottom planes were bonded to thick steel plates for fixing by bolts. Breaking tests by simple tension were carried out for the full-sized rubber bearings, showing that the breaking tensile forces were larger than the rated load (1.2 to 1.9 times). Biaxial breaking tests by tension and shear were performed using 0.4 scale models of the bearing. The tests showed that, through the breaking tensile forces decreased with increased shear deflexion, the breaking forces were still large (0.80 to 0.94 times of the rated load) even under a shear deflection of 0.3 m in full size. Biaxial breaking tests by compression and shear for the 0.4 scale models revealed that breaking shear strains were almost constant under various vertical loads up to 2 times the rated load and they were about 500% corresponding to a shear deflexion of 0.8 m in full size, which was larger than the diameter of the bearing. The breaking shear forces were 1.6 or 1.7 times that of the rated load.
一般社団法人日本機械学会の論文
1988-11-25