| Water energy resource is abundant in our nation, power capacity of stream is 6.76 million kW, technical development capacity is 4.93 million kW, economic development capacity is 3.78 kW, premierly in the world. Most of power potential are in alp and gorge region being mastered of landform and climate condition in our nation. Design of underground cavity is frequently used in water conservancy and hydropower engineering as the development of national hydroelectricity engineering. Project of underground cavity has a vital praxis meaning and is very important in hydropower resource exploitation.Many scholars do a lot of theory and practice research on underground projects. Several calculate models are took as analyse in research and the results indicate the rationality of numerical simulation. Some national undergrond engineering adhibit the numerical simulation designs recently.Based on the finite element simulation software ANSYS, this paper do a research on plastic-elasticity theory of nonlinear finite element in hydropower structure engineering project and realize the stress-strain relation and yield rules. We realize several common methods of numerical simulation in hydraulic engineering after reading a great deal articles about numerical simulation on hydropower engineeing. Combining with the Chahanwusu hydroplant project, this paper analyse the principle of rock mass construction and the realization of numerical simulation by ANSYS. The following work is numerical simulation of spillway tunnel brake chamber of Chahanwusu hydroplant project and the generation and calculation of 3.D finite element model, the stability of wall rock in load case is also be analysed. Finally, we can gain the results of displacement and stresses in load and normal pool level load case. Stability factor of chamber can be calculated by the safety reduction method, several stress instances and crash areas analyses of chamber floor and concrete beam are made in normal pool level chamber retaining case finally.
|
PDF Full Text Request