观音阁水库碾压混凝土大坝温度应力仿真计算研究

观音阁水库库区地处严寒地带，气候条件恶劣，每年的冬季有５个月不能浇筑混凝土。１９９４年２～４月间，现场发现部分坝段越冬面上的水平施工缝张开，最大深度达（３～６）ｍ。为研究裂缝的形成过程及发展趋势，确保今后越冬面不出现裂缝，用有限单元法对观音阁大坝的典型坝段按现场实际情况，进行了施工期至运行期的温度及温度徐变应力的仿真分析及预测计算分析，研究了避免新浇混凝土施工期及运行期产生裂缝的温控条件及措施。

Study on temperature stress emulation calculation of the RCC dam in Guanyinge Reservoir

The reservoir area of the Guanyinge Reservoir is located in severe cold zone. The climate is poor. There are 5 months in winter every year in which the concrete pouring could not be conducted. From February to April in1994, it was found in site that the horizontal construction joints opened in some dam sections, with the maximum joint depth is up to 3-6m. In order to study the fissure form process and its development trend and ensure that no fissure could be occurred in overwintering surface from now on, the finite element method has been used, in linewith actual field conditions, for the emulation analysis and prediction calculation analysis of temperature and creep stress by temperature for typical dam section of Guanyinge Dam during construction and operation have been studied.