Metal Structure Finite Element Design Technology of DF40/200 Bridge Erection Machine Based on ANSYS
[Purposes]In order to ensure construction safety,as a large-scale lifting equipment,the bridge crane needs to be put into use before the strength and stiffness calibration.[Methods]This paper takes DF40/200 type bridge erection machine as the research object,and introduces the structural composition and operation process of bridge erection machine.The finite element model of the most dangerous erec-tion and over-hole condition of the bridge erection machine is established in ANSYS software through the parametric modeling method of APDL,and finally the finite element calculation is carried out on the model.[Findings]The results of stress and displacement of the whole machine under the erection in class 7 wind and over-hole condition in class 6 wind are obtained by finite element analysis.By analyz-ing the results,it is verified that the bridge erector meets the usage requirements under the most danger-ous erection and over-hole working conditions,as well as the strength and stiffness of its metal structure.[Conclusions]The main girder has a large self-weight and is the main load-bearing part of the bridge.Through the finite element calculation,the stress and displacement cloud diagram of the main girder metal structure of the bridge is obtained and it is determined that its structural design meets the require-ments.And at the same time,it is concluded that the main girder of the bridge exists the optimization space for the subsequent optimization of the main girder of the bridge,which provides a reliable basis for the optimization of the main girder of the bridge.
bridge erection machinemetal structurefinite element analysis
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