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以小浪底水电站地下厂房蜗壳尾水管一二期混凝土整体结构为研究对象 ,运用三维有限元法对其进行了应力应变分析。针对地下厂房的施工和运行情况 ,模拟计算分析了正常运用工况、校核工况下机组整体结构的应力情况 ,研究表明 :整体结构应力水平比较低 ,结构突变部位出现局部较大拉应力 ,结构设计应当予以关注。
Taking Xiaolangdi Hydropower Station underground volute casing draft tube Phase I and II concrete structure as the research object, the stress and strain were analyzed by the three-dimensional finite element method. According to the construction and operation of the underground powerhouse, the stress conditions of the whole structure of the unit under normal operating conditions and checking conditions are simulated and analyzed. The results show that: the overall structural stress level is relatively low, large local tensile stresses appear in the structural parts, Structural design should pay attention.