群英水库浆砌石重力拱坝三维有限元温度应力计算分析

Three-dimensional finite element analysis of construction temperature stress on cemented masonry gravity-arch dam of Qunying Reservoir

对于坝高超过100m的砌石拱坝，结构受力复杂，工程经验相对较少，特别是考虑到北方地区冬夏季节温差很大，将产生不可忽略的温度应力，因此有必要对大坝及相关部位进行三维有限元计算复核，并特别考虑了温度应力对结构受力的影响。大型通用有限元分析软件ANSYS温度计算模块为三维空间结构温度应力计算提供了极大的方便。通过对群英水库浆砌石重力拱坝各种工况的计算分析，认为在内外温差较大时，温度场在拱坝结构设计时应引起充分的重视。

Aiming at the problem of the complexity of cemented masonry gravity-arch dam structure stress, which the height is more than 100 meters. Because of the experience is lesser, especially the temperature differences is biggish in the North when the winter and the summer, so it is necessary to use the method of finite element to analyse the temperature field and temperature stress in the structure. The temperature module of the large use of finite element anslysis software ANSYS provided a great convenience for the temperature stress calculations on three-dimen- sional structure. This paper analyzes a variety of conditions in the cemented masonry gravity-arch dam of Qunying Reservoir. Temperature stress canrt be ignored when the internal and external temperature difference is greater.