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繰り返しせん断変形を受ける免震ゴム支承材内部では付加されたひずみエネルギーの一部が熱エネルギーに転化しゴム等の発熱による温度上昇が起きるしかし大きく変形するゴム内部の温度を測定することは難しく表面温度などの測定によって推定していた一方ゴム内部の温度はゴムの物理特性にも影響を与えるため免震ゴム支承材の内部温度上昇を知ることは支承材のせん断特性や耐熱劣化性等を評価する上で重要である本文では高減衰ゴム支承材のせん断変形によって生じるゴムの内部ひずみが一様分布に近くゴムのエネルギー吸収が一様と仮定できることを使って実験と数値解析を合成するハイブリッド解析により繰り返しせん断変形下の高減衰ゴム支承材内部発熱温度を推定した結果を示したA part of internal strain energy of rubber bridge bearing is transformed into thermal energy, so that temperature rise will be observed on high damping rubber bearing under repeated shearing deformation. It is, however, difficult to measure directly internal temperature subjected to large deformation. But internal temperature affects much on physical characteristics of rubber bearing. As the internal strains of rubber bearing under shear deformation are approximately condidered as uniform, so that energy absorption of rubber is assumed to be uniform. By the hybrid prediction analysis taking both experimental and numerical analysis into account, internal temperature distribution of rubber bridge bearing under repeated shear deformation, is analyzed

ANALYSIS ON INTERNAL TEMPERATURE DISTRIBUTION OF HIGH DAMPING RUBBER BRIDGE BEARING UNDER LOW TEMPERATURE VIBRATION