【摘要】 基于拟力法的基本理论,提出消能支撑的计算模型,即把消能支撑提供的控制力简化为等效的节点力施加在框架节点处。与以往的变刚度求解非线性变形问题相比,具有存储空间小、计算速度快和求解信息量大等特点。数值算例表明,建立的计算方法在计算结构动力反应基本要素(位移、速度和加速度等)外,还可以实时获得结构杆件的塑性铰分布特点和塑性变形,与有限元方法计算结果相对比,验证消能减震结构计算模型及计算方法的正确性与有效性。更多还原

【Abstract】 A computational method is presented for analysis of nonlinear dynamic response of structures with energy dissipation devices, with the control force from he energy dissipation devices simplified as centralized forces at the joints of the structures. The method is based on the fundamental theory of fictitious force method, which uses a variation in the displacement field instead of changing the stiffness as in the traditional methods to represent the inelastic behavior of structures. Numerical simulation results indicate that the proposed method can determine the structural dynamic response, the distribution of plastic hinges of structural members and the structural plastic deformation. Comparison of the structural dynamic response and the plastic deformation of a building model are conducted between the proposed method and Finite Element Method, which shows the accuracy and validity of the proposed model for structures with energy dissipation devices.更多还原