基于ANSYS的水电站厂房刚度中心数值分析  

Numerical Analysis of Stiffness Center of Hydropower House Based on ANSYS

作　　者：赵廷红[1] 陈健 ZHAO Ting-hong;CHEN Jian(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730000,Gansu Province,)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《中国农村水利水电》2023年第8期241-247,共7页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51969012)。

摘　　要：为了分析水电站厂房的动力特性、求解其刚度中心的位置,在传统刚度中心计算方式的基础上,对计算公式中柔度系数的获取方式做出了改变,修订了水电站厂房刚度中心的计算方法,使刚度中心求解方法的适用性更为广泛。以某水电站厂房为计算模型,应用有限元软件ANSYS进行了刚柔耦合仿真分析,求解得出了该结构的刚度中心,此外还对使用ANSYS求解刚度中心时影响计算结果精确性的因素进行了分析。结果显示:本文修订的刚度中心计算方法结合ANSYS软件不仅可求解得出复杂结构的刚度中心,而且求解速度与精度皆高于传统计算方法,但在求解过程中,网格的不均匀加密将引起计算模型的抗侧刚度发生不均匀变化,对刚度中心数值计算结果的精确性存在一定影响。To analyze the dynamic characteristics of the hydropower plant and solve the position of the stiffness center,based on the traditional calculation method of the stiffness center,the method of obtaining the flexibility coefficient in the calculation formula is changed,and the calculation method of the stiffness center of the hydropower plant is revised.By taking the powerhouse of a hydropower station as the calculation model,this paper carries out the rigid-flexible coupling simulation analysis by using the finite element software ANSYS,and the stiffness center of the structure is obtained.In addition,the factors affecting the accuracy of the calculation results are analyzed when ANSYS is used to solve the stiffness center.The results show that the revised stiffness center calculation method combined with ANSYS software can solve the stiffness center of complex structure,the solution speed and accuracy are also higher than the traditional calculation method.However,in the solution process,the uneven refinement of the grid will cause the lateral stiffness of the calculation model to change unevenly,which has a certain influence on the accuracy of the numerical calculation results of the stiffness center.

关 键 词：水电站厂房 刚度中心 ANSYS 刚柔耦合 数值分析 

分 类 号：TU311.41[建筑科学—结构工程]