论文部分内容阅读
在大体积混凝土结构中,温度应力是一个十分重要的问题。寒冷地区拱坝的温度应力较大,温度荷载的影响可能大大超过水荷载的影响。为了降低温度荷载,减小拱坝厚度,本文在文献[1]研究基础上提出在拱坝下游面粘贴聚苯乙烯塑料板作为永久保温层、确定温度荷载的计算方法。给出了年平均温度场T1(x)和对应的平均温度Tm1与等效温差Td1的精确解。该法已应用于红河二级拱坝。
In large-volume concrete structures, temperature stress is a very important issue. Arch dam in the cold temperature stress is large, the temperature load may greatly exceed the impact of water load. In order to reduce the temperature load and reduce the thickness of the arch dam, based on the literature [1], this paper proposes a method of calculating the temperature load by attaching a polystyrene plastic plate as a permanent insulation layer to the downstream surface of the arch dam. Gives the exact solution of the annual average temperature field T1 (x) and the corresponding average temperature Tm1 and the equivalent temperature difference Td1. The method has been applied to the Honghe two arch dam.