空心钢管混凝土组合柱抗震性能研究

为研究水电站厂房空心钢管混凝土组合柱抗震性能,以新疆某水电站钢管混凝土厂房组合柱结构构造形式为例,应用有限元软件ADINA建立了矩形实心及空心钢管混凝土厂房组合柱结构三维有限元模型,探讨了自振特性,并通过时程分析方法研究不同空心率模型在地震动输入情况下钢管和内部核心混凝土的动应力、动位移响应。结果表明,矩形空心钢管混凝土组合柱比实心钢管混凝土组合柱的抗震性能更好。

Discussion on Seismic Performance of Hollow Concrete filled Steel Tubular Combination Column

For study of seismic performance of hollow concrete filled steel tubular combination column in hydropower plant, taking the form of concrete filled steel tubular combination column of hydropower plant in Xinjiang Autonomous Region for an example, finite element software ADINA is used to establish the 3D finite element model of solid and hollow rectangle concrete filled steel tube powerhouse combination columns. Then their natural vibration characteristics are studied and the dynamic stress and response of the steel and the inside core concrete of the model with different hollow ratio under seismic loads are studied by the time history analysis method as well. The results indicate that the hollow rectangle concrete filled steel tubular column has a better seismic performance than the solid one.