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为了提高拱坝的安全稳定性能,以某碾压混凝土拱坝为例,设计水平分区、内外分区两种不同的材料分区方法,应用ANSYS优化设计模块对这两种分区方法进行优化分析。结果表明,水平分区时,拉应力值由优化前的3.83MPa减小到优化后的1.78MPa,坝体材料的弹性模量取值呈现由中间层向坝底和坝顶逐渐减小的趋势;内外分区时,坝体采用弹性模量内小外大的碾压混凝土材料,拉应力值由优化前的3.83MPa减小到优化后的3.18MPa。材料内外分区优化效果不如水平分区明显。
In order to improve the safety and stability of arch dam, taking a certain RCC arch dam as an example, two different methods of material partitioning, such as horizontal partitioning and inner and outer partitioning, are designed. The optimal partitioning methods are optimized by ANSYS optimization design module. The results show that the tensile stress decreases from 3.83 MPa before optimization to 1.78 MPa after optimization, and the elastic modulus of the dam shows a decreasing trend from the middle layer to the dam bottom and crest. When partitioning inside and outside, the dam body is made of RCC material with small elastic modulus, and the tensile stress decreases from 3.83MPa before optimization to 3.18MPa after optimization. Material inside and outside the partition optimization as obvious horizontal partition.