【摘要】 应用有限元方法分析了某大型水电站地下厂房中蜗壳结构的温度场和温度应力 ,阐述了围岩弹性抗力系数的确定方法 ,得出了混凝土截面的切向正应力 .计算分别采用第一类 (已知温度的边界 )和第三类 (对流换热边界 )温度边界条件 ,并对两种边界条件下的温度场和温度应力进行了比较 ,根据计算结果讨论了温度应力对蜗壳外围混凝土结构的配筋影响更多还原

【Abstract】 The temperature field and thermal stress on the spiral casing structure of large\|sized hydropower station are analyzed by the finite element method in this paper. The method to define the coefficient of elastic resistance on rock is presented. The thermal stresses of the concrete in the tangent direction are gotten. With the first and third temperature boundary conditions, namely temperature and heat flow boundary conditions, the temperature field and thermal stress are obtained and two kinds of the thermal stresses are compared. According to calculating results the influence on reinforced arrangement of the concrete structure is discussed in this paper.更多还原