: Seismic isotated struct 凵re , Leminated rubber bearing , Horizontal stiffness, Bending stiffness , lnstallation element 1 Mitsue ASANO * 1Shigeo MINEWAKI − * 2 lt is n essary to evaluate bend 孟 ng defbmlation of laminated rubber bearing and installation elements when the installation elements canno しbe assumed to be rigid. We obtajned lbllowing test results. ( i ) Bending stiHhess haΨe non − linearity and dependence on ve 面cal load , 〔 2)Additional shear deformation is induced by internul 負 )

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... rce caused by verdcal load and inclination Dfrubber sheets 、 We forrnulated herizontal stiffness ofIa 【 ninated rubber bearing assurn − ing that only compression area can bear bending nloment , The formula can evaluate additienal shear delbm 】ation and bending sti価 ess. We proposed a practicab 隻 e analytical method which consider fiexibility of installatien ele ・ me 凱 s and