湖南大学学报（自然科学版）2025，Vol.52Issue(11)：118-129,12.DOI:10.16339/j.cnki.hdxbzkb.2025110
基于参数化建模和代理模型的大跨储煤结构气动外形优化研究
Study on Aerodynamic Shape Optimization of Large-span Coal-storage Structures Based on Parametric Modeling and Surrogate Models
摘要
Abstract
To improve the wind resistance performance of large-span coal-storage structures,an aerodynamic shape optimization method for free-form reticulated structures is proposed by utilizing the parametric configuration method based on non-uniform rational B-splines(NURBS)theory and surrogate modeling technique.A secondary development of the program is carried out based on Grasshopper and Fortran to achieve an integrated process for design parameter adjustment,automatic model updating,and aerodynamic response calculation,which significantly enhances the automation level of optimization design.The control points of NURBS curves serve as optimization variables,and the maximum displacement is set as the objective.An optimization model for free-form reticulated structures is established accordingly.On this basis,aerodynamic shape optimizations are performed on tri-cylindrical and spherical coal-storage reticulated structures.The results show that,the proposed method,which combines parametric modeling and a Kriging surrogate model,effectively identifies rational aerodynamic shapes and achieves effective optimization.The maximum displacements of optimal cylindrical shells under wind directions of 0° and 30°are reduced by 32%and 18%,respectively,while the extreme value for spherical shells is reduced by 12%.The wind resistance performance of both types of reticulated shells is improved,and the goal of reducing construction costs is also achieved.Thus,a new approach for wind-resistant design and form selection of large-span reticulated structures can be finally provided.关键词
大跨储煤结构/气动外形优化/参数化建模/非均匀有理B样条/代理模型/气动响应Key words
large-span coal-storage structure/aerodynamic shape optimization/parametric modeling/non-uniform rational B-splines(NURBS)/surrogate model/aerodynamic response分类
建筑与水利引用本文复制引用
邱冶,华可,伞冰冰,危欣..基于参数化建模和代理模型的大跨储煤结构气动外形优化研究[J].湖南大学学报（自然科学版）,2025,52(11):118-129,12.基金项目
国家自然科学基金资助项目(51808194,51978240),National Natural Science Foundation of China(51808194,51978240) （51808194,51978240）
