In order to study the thermodynamic performance and temperature stress level of rock-filled concrete tech-nology in pumped storage power plants,based on the rock-filled concrete sand dam project of an energy pumping power station,the finite element simulation analysis of the temperature stress of the dam body during the construction process is carried out,and the variation law of the temperature stress of the dam body during the construction process is initially understood.The three-dimensional finite element software patran and abaqus were used for the simulation of this calcu-lation and analysis.Through calculation and analysis,it can be seen that the maximum temperature rise inside the dam body is lower than the adiabatic temperature rise of the rock-filled concrete during construction,the overall stress level of the dam body is low,and the average tensile stress is lower than 0.83 MPa,which meets the design requirements.For the different width of the dam section,the dam section width has little effect on the temperature field and stress field of the project.It can be further demonstrated that increasing the dam section width can simplify the construction technology and reduce the construction cost.For different insulation measures,adopting the insulation measures equiv-alent to 8 cm～12 cm thickness of polystyrene foam board can effectively reduce the high tensile stress on the dam sur-face in winter and avoid the risk of cracking.
关键词
堆石混凝土/温度应力/绝热温升/仿真分析
Key words
rock-filled concrete(RFC)/temperature stress/adiabatic temperature rise/simulation analysis
维普
万方数据