【作者】 刘冬霞； 梁力； 李明；

【Author】 ~*LIU Dong-xia~(12),LIANG Li~1,LI Ming~1 (1.Resource and Civil Engineering Institute Northeastern University,Shenyang 110004,China,2.Economical Institute Liaoning University,Shenyang 110136,China)

【机构】 东北大学资源与土木工程学院； 辽宁大学经济学院；

【摘要】 由于起重机桥架结构承受的荷载大,破坏危害大,当前进行大型起重机桥架结构的设计,容易存在过于保守的倾向。本文采用有限元方法分析桥架整体的应力、位移场,并进行数值优化设计,从而减少材料用量并减轻自重。以28.5米跨度的起重机桥架主梁结构为例,以结构总重量最小为目标函数,对其板件厚度进行了优化设计,从定量的角度确定了最优的设计方案,将主梁结构的板件厚度进行了合理的分配,为起重机主梁结构的设计应用提供了一定的借鉴作用。更多还原

【Abstract】 Since the bridge crane is load bearing structure,and the loss of damage is large,currenly designing the bridge crane girder of large-scale,easy for the existence of a tendency to be too conservative.In this paper,the overall bridge stress and displacement field is analysed by the finite element method,and numerical optimization design is done,thus material consumption and weight is reducd.Taking the crane bridge girder structure with the span of 28.5 meters as an example,the total weight of the structure as the objective function,the plate thickness design is optimized.From the quantitative point of view to determine the optimal design,the plate thickness of the main beam get a reasonable allocation,it will provide a certain degree of reference for the structure design of crane girder structure.更多还原