水电站主厂房450t+450t桥机桥架结构有限元计算  

Finite-element calculation of 450t+450t bridge machine’s frame structure for main powerhouse of hydropower station

作　　者：周任伟 李琴[1] 杨芳 吴思够 ZHOU Ren-wei;LI Qin;YANG Fang;WU Si-gou(School of Mechanical and Electrical Engineering,Southwest Petroleum University,Chengdu 610500;Sinohydro Jiajiang Hydraulic Machinery Co,.Ltd,.Leshan 614100)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]中国水利水电夹江水工机械有限公司,四川乐山614100

出　　处：《机械设计》2022年第8期21-27,共7页Journal of Machine Design

基　　金：2019年四川省中国制造2025四川行动资金项目计划(高端装备)项目计划(2019ZB045)。

摘　　要：某水电站主厂房450 t+450 t桥机具有起升容量大、跨度大的特点,为保证桥机的功能性、安全性,对桥架结构的主梁端部与大车运行机构组合位置进行了结构优化设计。传统的力学公式难以准确地进行应力、变形等方面的计算。根据桥机桥架的结构和尺寸参数,利用Inventor三维软件进行全模型等比例建模,并导入Workbench有限元软件,结合该桥机的载荷状态进行应力及变形等方面的静力学计算,得出桥架结构在不同载荷状态下起升小车处于跨中和跨端的应力分布和变形分布。结果表明,该桥架结构在不同载荷状态下的强度、刚度等指标均满足相关规范的规定及用户的要求,并为进一步对桥架结构进行优化设计提供了参考依据。The 450 t+450 t bridge machine in the main powerhouse of the hydropower station has such characteristics as large lifting capacity and long span.In this article,in order to ensure function and safety of the bridge machine,the combination position of the girder end of the bridge frame structure and the running mechanism of the cart is optimized.The traditional mechanical formula is difficult to calculate stress and deformation accurately.According to the frame structure and size parameters of the bridge machine,equal-scale modeling is performed with the help of the Inventor 3D software and imported into Workbench finite-element software.In combination with the static calculation of stress and deformation of the bridge machine under different load conditions,stress and deformation distribution of the bridge frame structure at the middle and end of the span are worked out.The results show that strength,stiffness and other indexes of the bridge frame structure under different load conditions meet the requirements of relevant codes and users,and provide reference for further optimization design of the bridge frame structure.

关 键 词：桥机 桥架结构 有限元 应力 变形 

分 类 号：TH114[机械工程—机械设计及理论] TH215[水利工程—水利水电工程] TV734TH123.3TH123.4