基于BIM的重力坝整体温控仿真有限元模型参数化前处理方法  

Parametric Preprocessing Method for BIM-Based Overall Thermal Control Simulation Finite Element Model of Gravity Dam

作　　者：崔旖璇 柴革红 朱旭华 程宏远 强晟 CUI Yi-xuan;CHAI Ge-hong;ZHU Xu-hua;CHENG Hong-yuan;QIANG Sheng(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Dongyang Reservoir Hydropower Operation Center,Dongyang 322103,China;China Water Resources Peal River Planning Surveying&Designing Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]东阳市水库水电运行中心,浙江东阳322103 [3]中水珠江规划勘测设计有限公司,浙江杭州310000

出　　处：《水电能源科学》2025年第3期132-136,共5页Water Resources and Power

基　　金：国家自然科学基金项目(52079049)。

摘　　要：结构化网格在抗畸变性和数值稳定性等方面更具优势,但其生成过程复杂耗时,如何快速生成高质量结构化网格是数值模拟领域的难点之一。针对考虑浇筑分块的重力坝混凝土结构网格生成,提出了一种基于参数化分割的模型分块方法。在BIM软件CATIA中建立重力坝的参数化模型和曲面,利用宏脚本简化分割命令,通过参数化曲面将模型分割为可自动生成结构化网格的子块;通过有限元前处理软件HyperMesh将子块划分为结构化网格,从而实现参数化建模与结构化网格自动生成的协同工作。以某重力坝工程为例,用该方法进行结构化网格生成,并通过雅可比比率等指标评估单元质量。结果表明,通过该方法,仅需修改部分模型结构并输入关键参数,即可快速生成分解为子块的重力坝模型,并划分适用于施工期温度场应力场计算的结构化网格,使得重力坝整体温控仿真有限元模型的建模时间缩短了80%以上。这种参数化前处理方法有望在数值模拟领域广泛应用,为其提供更快捷、更精确的结构化网格生成方案。Structured meshes have advantages in terms of anti-distortion and numerical stability,but their generation process is complex and time-consuming.Quickly generating high-quality structured meshes is one of the challenges in numerical simulation.For generating the mesh of a gravity dam concrete structure considering pouring block divisions,a model partitioning method based on parametric segmentation is proposed.Firstly,a parametric model and surface of the gravity dam are established in the BIM software CATIA.Macro scripts simplify segmentation commands,dividing the model into sub-blocks that can automatically generate structured meshes through parametric surfaces.Then,the sub-blocks are meshed into structured mesh using the finite element preprocessing software HyperMesh,realizing the collaborative work of parametric modeling and automatic generation of structured meshes.Taking a gravity dam project as an example,structured mesh generation is performed using this method,and the element quality is evaluated using metrics such as the Jacobian ratio.The results show that this method allows rapid generation of a gravity dam model decomposed into sub-blocks by modifying only parts of the model structure and inputting key parameters.The structured mesh suitable for calculating the temperature and stress fields during the construction period is then generated,reducing the modeling time of the overall thermal control simulation finite element model of the gravity dam by more than 80%.This parametric preprocessing method is expected to be widely applied in numerical simulation,providing a faster and more accurate solution for structured mesh generation.

关 键 词：重力坝 CATIA 参数化建模 模型分解 结构化网格划分 

分 类 号：TV642.3[水利工程—水利水电工程]