滑移摩擦支座摩擦力模型研究
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摘要
采用微分连续模型模拟滑移摩擦支座的单向和双向耦合摩擦力,表明该模型可以较好地描述摩擦力的非线性特征和双向耦合效应。同时,从计算分析也可看出,考虑双向耦合作用与未考虑双向耦合作用的摩擦力滞回曲线有较大差别,因而支座应采用双向耦合摩擦力模型,以考虑双向耦合作用对结构地震反应和支座性能的影响。
The differential sequential friction force model is used to simulate the unilateral and bilateral coupled friction force of sliding bearings, the non-linear characteristic and bilateral coupled effect of friction force can be accurately described by the model. It is also shown that the bilateral coupled hysteretic loop is very differed from the unilateral loop. Because of the bilateral coupled action of sliding bearings, so the bilateral coupled friction force model should be used when the influence on earthquake response of structure and performance of bearings is considered.
引文
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    [3] MokhaA,ConstantinouMCandReihornAM.TeflonBearingsinBaseIsolation.I:Testing[J].JournalofStructuralEngineering,ASCE,1990,116(2):438 454.
    [4] MokhaA,ConstantinouMC,ReihornAM.VerificationofFrictionModelofTeflonBearingsUnderTriaxialLoad[J].JournalofStructuralEngineering,ASCE,1993,119(1):240 261.

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