由于拱坝的体形越来越复杂,拱坝的建模难度越来越大.利用VBA对Excel进行二次开发,得出CATIA拱坝建模中所需的fog规则,根据这些fog规则直接在CATIA的GSD模块中生成拱坝上下游拱圈线,快捷高效地建立了双曲拱坝模型,为此后的拱坝仿真计算节约了大量的时间.实例表明,Excel-VBA与CATIA的结合使用,使拱坝精细化建模过程可完全进行模块化、参数化处理,为拱坝这种复杂体形的有限元建模提供了便利.%As the shape of arch dam becomes complicated,the modeling of arch dam is also growing more and more difficult.The secondary development of Excel by making use of VBA to get required fog rules is conducted,in which,the arch rings are directly generated in the GSD module of CATIA on the basis of those fog rules,and finally the double-curvature arch dam model is established quickly and efficiently.It can save a lot of time for next simulation analysis and calculation of arch dam.The case study shows that the parametric modeling of arch dam becomes more convenient and accurate by combining the method of Excel-VBA and CATIA,and facilitates the finite element modeling of complex shape of arch dam.
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