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一座运行中的大坝，其内部受到环境温度作用主要表现为混凝土与周围空气及库水之间周期性的热交换，空气中的热源则来之于太阳对坝面的直接辐射。作为超静定结构的重力拱坝，混凝上体积会由于与环境温度的热交换而呈现周期性的胀缩变化，由此而产生的拉伸或张力应变将会影响到建筑物的结构设计。根据周围环境温度、太阳辐射（日照）及库水水温等数值，利用三维模型和一维或无因次模型，探究重力拱坝一年四季由于环境温度效应而在坝内产生的各种应力和位移。
A dam in operation, its interior by the role of ambient temperature is mainly manifested in the concrete and the surrounding air and the periodic exchange of water between the reservoir, the heat source in the air comes from the sun on the dam surface direct radiation. As a gravity arch dam with statically indeterminate structure, the volume of the coagulation will show periodic expansion and contraction due to the heat exchange with the ambient temperature, and the resulting tensile or tensile strain will affect the structural design of the building . According to the ambient temperature, solar radiation (sunshine) and the temperature of the reservoir water and other numerical values, using three-dimensional model and one-dimensional or non-dimensional model to explore the gravity arch dam throughout the year due to environmental temperature effects in the dam and the various stress and Displacement.