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自复位耗能摇摆柱由摇摆柱、四根小型自复位耗能支撑(SCED)和预埋连接件构成。SCED对自复位耗能摇摆柱的耗能性能有重要作用,因此,研究SCED的不同参数是有必要的。利用Open Sees软件建立自复位耗能摇摆柱的有限元模型并进行了不同SCED参数下的滞回性能分析。分析表明:在几个关键参数进行一定幅度的调整时,自复位耗能摇摆柱仍具有良好的自复位性能;SCED的第一刚度对自复位耗能摇摆柱的抗侧承载力和耗能性能影响较小;随着第二刚度、摩擦力及初始预应力的增大,其承载力和耗能能力也增大。
The self-resetting energy swinging column consists of a swinging column, four small self-resetting energy dissipation supports (SCEDs) and an embedded connector. Since SCED plays an important role in the energy dissipation performance of self-resetting swinging columns, it is necessary to study different parameters of SCED. The Open Sees software was used to establish the finite element model of the self-resetting energy dissipation rocker column and the hysteretic behavior under different SCED parameters was analyzed. The analysis shows that self-resetting energy dissipating rocking column still has good self-resetting performance when some key parameters are adjusted to a certain extent. The first stiffness of SCED has a great influence on the anti-side bearing capacity and energy dissipating performance The influence is small; with the increase of the second stiffness, friction and initial prestress, the bearing capacity and energy dissipation capacity also increase.