基于ANSYS和MATLAB的胶结砂砾石坝断面优化  

Study on Section Optimization of Cemented Sand Gravel Dam Based on ANSYS and MATLAB

作　　者：陈汭 杨海霞[1] 贾金生[2] 郑璀莹[2] CHEN Rui;YANG Haixia;JIA Jinsheng;ZHENG Cuiying(College of Mechanics and Materials,Hohai University,Nanjing 211100,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]河海大学力学与材料学院,江苏南京211100 [2]中国水利水电科学研究院,北京100038

出　　处：《人民黄河》2022年第4期117-121,127,共6页Yellow River

基　　金：国家自然科学基金资助项目(U1965207);国家重点研究计划“水资源高效开发利用”专项课题(2018YFC0406800)。

摘　　要：以一座设计阶段的胶结砂砾石坝为例,其坝址处地基覆盖层为砂卵石土层,坝体为胶结砂砾石料,前期运用ANSYS的参数化设计命令流进行二次开发,分别以邓肯-张经典与修正模型作为材料本构模型,对整体结构进行有限元计算,分析其应力变形规律。后期基于实际设计需求,从覆盖层抗压、抗剪两个角度出发,联通ANSYS有限元分析与MATLAB优化模块,通过优化设计与方案评估获得最优坝型,达到材料用量减少(节省11.3%)和地基应力状态改良(抗剪破坏点清除和最大压应力降低9.2%)的目的。The research object of this paper was a cemented sand gravel dam in the design stage.The foundation overburden at the dam site was sandy pebble soil layer,and the dam body was cemented sand gravel.Exploring its stress deformation law and reasonable shape had guid⁃ing significance for the design of similar projects.In the early stage of this paper,the parametric design command flow of ANSYS was used for secondary development.Taking Duncan Zhang classical and modified models as material constitutive models,the finite element calculation of the overall structure was carried out and the law of stress and deformation was analyzed.In the later stage,based on the actual design require⁃ments,from the perspectives of overburden compression and shear resistance,it connected the ANSYS finite element analysis and MATLAB optimization module,and obtained the optimal dam type through optimization design and scheme evaluation,so as to reduce the material con⁃sumption(save 11.3%)and improve the foundation stress state(remove the shear failure point and reduce the maximum compressive stress by 9.2%).

关 键 词：胶结砂砾石坝 覆盖层 本构模型 优化设计 

分 类 号：TV64[水利工程—水利水电工程]