天然ゴム系積層ゴムの水平鉛直同時加力時の大変形挙動特性に関する研究

概要

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Test data about simultaneously vaiying vertical load and horizontal load of laminated tubber bearing are needed to confirm an analytical model which can include the influence of vaiying vertical load. First cyclic shear tests under fixed vertical load on natural rubber bearings of 1,300 millimeters in diameter which have secondary shape coefficient (S_2) 6.4 are conducted Then the cyclic shear tests about the reduced model of 1,300 millimeters bearing is carried out on not only fixed vertical load but varying vertical load. Authors have proposed an analytical model with multi-springs on lead-rubber bearing for predicting the behavior under varying vertical load. A modified analytical model for natural urbber bearing is proposed to express mechanical characteristics under varying vertical load. The analytical model is verified by simulation analyses and comparison of shear test results under not only fixed vertical load but also varying vertical load.
一般社団法人日本建築学会の論文
2009-03-27