本研究では、屋根構造の回転剛性の低いスライド支承部の繰り返し加力実験を行い、それらの結果をもとに破壊メカニズムの解明、および回転と水平移動を考慮した骨格曲線の定式化を試みました。本研究は東工大（現科学大），工学院大学，明治大学，防災科研の共同研究成果（基盤A）の一部であり，山下哲郎先生（工学院大学）が長年行われている屋根支承部の復元力特性の定式化の集大成です。論部はこちら
In 2011, many roof bearings in large span facilities were damaged severely by the Pacific coast of Tohoku earthquake. Some of them were designed as slide bearings to release the thrust caused by the weight of roof. In ball-jointed system truss roof, bearings are subjected to horizontal movement and rotation since the roof structure has insufficient bending stiffness. In this study, we conducted the cyclic loading tests on conventional roof bearings and analyzed the observed behavior. In addition, we derived functions which express horizontal force in relation to horizontal displacement and rotation and verified by comparing with the test results.