X形支撑型钢混凝土阀厅结构的整体有限元分析

Integral Finite Element Analysis of Steel Reinforced with X Shape Support Concrete Valve Hall Structure

为考察X形支撑型钢混凝土阀厅结构的整体性能,利用SAP2000建立了有限元模型,对整体结构在恒载、活载、风载和地震作用下的性能进行了分析。由模态分析得出,前三阶模态为平动及扭转,证明结构体系布置的均匀合理,自振周期随着振型阶次的增加而逐渐减小,振型刚度随着振型阶次的增加而逐渐增加。利用反应谱法考虑地震作用下结构的位移,结构的内力小于规范限制,结构的整体变形良好,并对典型支撑的内力进行分析。

To investigate the overall dynamic performance of the valve hall structure with steel reinforced concrete with X shape support,the overall dynamic finite element model was established,and the dynamic performance of the whole structure under dead load,live load,wind load and earthquake was analyzed.According to the modal analysis,the first three modes are translation and torsion,which proves that the arrangement of the structural system is uniform and reasonable.The natural vibration period decreases with the increase of the mode order,and the mode stiffness increases with the increase of the mode order.The response spectrum method is used to consider the displacement of the structure under the earthquake action.The internal force of the structure is less than the limit of the code,and the overall deformation of the structure is good.The internal force of the typical support is analyzed.