Structural optimization design of box girder of bridge crane

The performance of bridge crane largely depends on its box girder structure.The paper elaborates the implementation procedure of topology optimization based on ANSYS.Taking the model of 30t crane girder to conduct topology optimization,and according to the optimization results,the hollow model of box girder is built and analysed.The results show that the hollow box girder not only satisfies the designing requirements,but has less deadweight,which offers references for structural design of box girder.