摘要
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-centering energy dissipative rocking column is composed of the rocking column, four small self-centering energy dissipative braces （SCED） and the embedded part. SCED plays an important role in the energy dissipation performance of self-centering energy dissipative rocking column. Therefore, it is necessary to study the different parameters of SCED. The self-centering energy dissipative rocking column is established based on OpenSees, and the quasi-static cyclic behavior with different parameters of SCED is analyzed. Numerical result shows that： self-centering energy dissipative rocking column has good self-centering properties in several key parameters of SCED; the first stiffness of SCED has little effect on the lateral bearing capacity and energy dissipation of the self-centering energy dissipative rocking column; with the increase of second stiffness, friction force and initial stress of SCED, the bearing capacity and energy dissipation capacity are also increased.
出处
《建筑科学》
CSCD
北大核心
2016年第11期29-33,共5页
Building Science
基金
甘肃省建设厅科技攻关项目"可自复位耗能摇摆结构的抗震性能研究"(JK2012-43)
