【摘要】 基于ANSYS有限元软件,建立单塔换流阀体的有限元模型,通过模态分析计算结构的动态特性,应用反应谱法计算换流阀塔的地震响应。在抗震分析计算中考虑结构的预应力效应和大变形效应,并考虑地震载荷和重力载荷的组合作用。计算结果表明,主要影响地震响应的振型是水平向的摆动和扭转振型,换流阀塔水平摆动的地震响应位移稍大,应在阀厅的布置设计中予以考虑。更多还原

【Abstract】 Based on ANSYS software,the finite element model of single converter valve tower is set up,the structural dynamic characteristics of the tower are analyzed by modal method,and the earthquake response of the converter valve tower is calculated by response spectrum method.The restress effect and the large deformation effect are included in the calculation process,and the seismic response of the tower under combined action of earthquake and gravity loads is calculated.The results show that horizontal sway mode shape and torsional mode shape significantly influence structural dynamic response.And horizontal sway response displacement of the tower is slightly larger,which must be considered in the disposition design of valve hall.更多还原