龙羊峡一期抽水蓄能电站进/出水口三维有限元分析OA

A comprehensive static and dynamic structural analysis of the lower reservoir intake/outlet of the first stage Longyangxia pumped storage power station was conducted using the ANSYS software.The study aimed to investigate the natural frequency characteristics of the intake/outlet during both the completion and operational phases.Furthermore,a deep analysis of the stress levels and stability of the intake/outlet was performed using the response spectrum method.The results indicate that under seismic action,the maximum tensile stress in specific areas,such as the top of the intake/outlet and the trash rack piers,significantly exceeds the theoretical tensile strength limit of the concrete in these zones.Therefore,to effectively prevent cracking of the concrete structure,a certain amount of reinforcement is required in these critical areas to enhance the tensile performance and overall stability of the structure.Stability analyses against sliding,flotation,and overturning were also carried out for the intake/outlet.The results demonstrate that the stability of the tower structure is excellent and fully complies with the requirements of the relevant codes and standards.