The Analysis Of Underground Powerhouse Supporting Structure And Aseismic Analysis Of Lock Chamber

The paper is compsed of two parts. The first part is about the static and dynamic analysis of underground powerhouse structure of Zhouning hydroelectric power station. The study results provid the rule of amplitude calibration and reinforcing steel bar configure for the powerstation. The second part is about the aseismic analysis of lock chamber of Pubugou hydroelectric power station. The study results offer the rule of designing of lock chamber structure. The designers adopt the results to improve the design work. The main contents and researched results are as follows:1. The underground powerhouse of Zhouning power station utilizes the wall rock little. The new water-wheel type was used in the high water head and high rotation speed turbine unit in the underground powerhouse of Zhouning power station. The dynamic response of concrete supporting of water-wheel generator was analysised with 3D FEM. By comparing the schemes of thick board and board beam . columniation, vibration characteristics of the supporting structure was given. Author puts forward the prior scheme and analyses the function of the diverse engineering measures, then performs the three-dimentional the static and dynamic analysis aimming at different models and run conditions. Assuming diverse constrains damp integration time steps, author performs the transient analysis and gives the results of consonance verification and transient dynamic response of the unit run, furthermore, deals with the analysis of sensitivity and discuss the resourse of vibration. Finally, auther produces the rational disposal measures and structure form.2. Managing the method of response spectrum and performing the aseismic analysis of lock chamber structure of Pubugou hydroelectric power station. With the precondition of the rational presupposition of interaction effect among the lock chamber base of foundation, water, the analytical results of seismic action effect make clear that the seism of Y direction produces more severe effect than X direction. There is concentration of stress in local. According to aseismic analysis of limit condition, the designers should take measures to guarantee the aseismic safety of the structure from the aspect of the structure bodily form concrete label reinforcing steel bar configure ect.This paper mobilization universal soft of finite element analyse, and it is combined with the practical project. Command program in APDL computerlanguage is compiled about the numerical analysis. Some beneficial conclusions were obtained, which have some reference value for other similar projects. Finally, a summary is given and some problems to be further studied are discussed.