基于CATIA的平底三梁钢岔管辅助设计系统开发与应用  

Development and Application of Computer Aided Design System for Three-girder Reinforced Bifurcation with Flat Floor Based on CATIA

作　　者：鲁志航 伍鹤皋[1] 严利冰 石长征[1] 胡蕾[2] LU Zhi-hang;WU He-gao;YAN Li-bing;SHI Chang-zheng;HU Lei(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China;Changjiang River Scientific Research Institute,Wuhan 430010,China)

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [2]长江科学院,武汉430010

出　　处：《中国农村水利水电》2020年第5期145-149,共5页China Rural Water and Hydropower

基　　金：国家自然科学基金资助项目(51609020,51409194)。

摘　　要：平底三梁钢岔管结合了月牙肋和三梁岔管的特点,整个钢岔管底部平齐,有利于解决管道系统检修排水难题;但其结构复杂,无可靠的结构力学计算方法。在进行岔管设计优化或者设计变更时,需采用有限元软件反复建模计算,流程繁琐,工作量大。通过CATIA软件二次开发计算机辅助设计系统进行平底三梁钢岔管体型设计和有限元分析,可有效提高设计效率和精度。程序系统按岔管布置形式开发的对称和卜形两个模块,均包括体型设计、三维建模、网格划分、数据转换等功能。采用程序系统进行埋藏式平底三梁钢岔管与围岩联合承载设计,可使计算结果更加合理,管壳和加强梁尺寸得到进一步优化,应用前景非常广阔。Three-girder reinforced bifurcation with flat floor combines the characteristics of crescent-rib and three-girder reinforced bifurcation,the entire bifurcation has the same elevation at the bottom,which is helpful to solve the problems of pipeline system drainage during maintenance,but its structure is complex and there is no reliable structural mechanics calculation method.When the bifurcation design scheme is optimized or changed,the finite element software needs to be used for repeated modeling and calculation,with tedious process and heavy workload.In this paper,through the secondary development of CATIA,the computer-aided design system is designed to carry out the shape design and finite element analysis of the three-girder reinforced bifurcation with flat floor,which can effectively improve the design efficiency and accuracy.This program is divided into two modules of symmetry and Y-type according to the arrangement of the bifurcation,including both the shape design,three-dimensional modeling,mesh division,data conversion and other functions.Designing the underground three-girder reinforced bifurcation with flat floor combined with bearing of surrounding rock by this program,the calculation results can be more reasonable,the size of shell and reinforced beam can be further optimized,and the application prospect is very broad.

关 键 词：水电站 平底三梁钢岔管 CATIA二次开发 有限元法 围岩联合承载 

分 类 号：TV732.4[水利工程—水利水电工程]