Analysis of global stability of Maji arch dam based on nonlinear finite elements

作者：Yang Qiang^*; Liu Yaoru; Pan Yuanwei; Deng Yiguo

来源：Chinese Journal of Rock Mechanics and Engineering, 2010, 29(10): 2010-2016.

• Abutment stability
• Complementary energy
• Current construction
• Dam height
• Deformation reinforcement
• Elasto-plastic
• Engineering safety
• Geological conditions
• Global stability
• Hydraulic engineering
• Hydroelectric power station
• Non-linear finite elements
• Non-linear finite-element analysis
• Numerical simulation
• Unbalanced force
• Working conditions

Maji hydroelectric power station with the dam height of 290 m is a major station of Nujiang river. The geological conditions and rock mechanics environment of Maji arch dam are complex; the stress and the abutment stability are significant for engineering safety. Based on nonlinear finite element analysis and deformation reinforcement theory, three dimensional elastoplastic numerical simulation of Maji arch dam has been carried out with code TFINE. The displacements, stresses and abutment forces of dam under normal working conditions were analyzed. Then the global stability and overloading analysis of dam were made based on complementary energy norm. The dam toe and faults in foundation were analyzed based on unbalanced force. The results show that the displacements, stresses and overloading capacity of Maji arch dam meet the requirement of stability; and the current construction project for Maji dam is feasible.

• 出版日期2010
• 单位清华大学