双曲拱坝应力应变三维有限元仿真分析

Three-dimensional FEM simulation analysis of structural stress for the double-curved arch Dam

运用大型通用有限元软件(ANSYS),建立能反映坝体混凝土和基岩相互作用的某电站双曲拱坝有限元模型。利用顺序耦合法对坝体在多种载荷组合作用下的运行期应力和变形进行了仿真计算。结果表明,坝体的应力及变形均符合有限元计算的一般规律,计算成果为工程项目的实施提供了技术依据,同时对类似工程分析具有参考价值。

By using three dimension linear elastic finite element （FEM）and the software ANSYS, a FEM model is established for reflecting the interaction between the concrete of dam body an rock mass of dam foundation . Through simulating different thermal-structure interaction loadcases, the dam body＇s stresses and strains under the effect of multi-loads during operation period were analized with order coupled analysis method. The calculation results indicate that the stress and deformation of the arc dam accord with the general rules of the calculation FEM. The calculation results provide a technical basis for the implementation of the project, while have the reference value to similar engineering analysis.