【摘要】 基于某水电站厂房钢管混凝土排架结构的构造形式和受力特点,建立了其上部厂房排架结构的整体三维有限元模型,计算了钢管混凝土排架结构的自振频率,并采用时程分析法计算了钢管混凝土排架结构的地震响应,研究了水平地震作用下混凝土强度、钢管厚度对排架结构抗震性能的影响,以期为水电站厂房钢管混凝土排架结构设计提供参考。更多还原

【Abstract】 According to the stress characteristics and structural pattern of concrete-filled steel tubular bent structure of a hydropower house,3D finite element model of bent structure for upper power house is established.The natural vibration frequency of concrete-filled steel tubular structure is calculated.And then the seismic response of concrete-filled steel tubular bent structure is analyzed by using time-history analysis method.Finally,the influence of concrete strength and steel pipe thickness on aseismic performance of concrete-filled steel tubular bent structure is studied under the action of horizontal earthquake.Therefore,it can provide reference for bent structure design of concrete-filled steel tube of hydropower house.更多还原