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根据大跨度钢箱式悬索桥加劲梁的结构特点,运用ANSYS有限元软件提供的APDL参数化设计语言建立了悬索桥的正交异性桥面板的精确有限元模型,并以结构总重量为目标,在最大应力及最大垂向位移等约束条件下,从桥面板纵肋与横隔板的间距等方面探讨了正交各向异性钢箱梁桥面第二体系的优化设计方法。将结果与已建成的虎门大桥比较,充分说明该文的设计结果合理,可作为大跨径钢箱梁桥面板的设计依据;同时也证明了虎门大桥加劲梁设计的合理性
According to the structural characteristics of the stiffening girder of the long-span steel box-type suspension bridge, an accurate finite element model of the orthotropic bridge deck is established by using the APDL parametric design language provided by the ANSYS finite element software. With the total weight of the structure as the goal, Stress and maximum vertical displacement, the optimum design method of the second system of orthotropic steel box girder bridge deck is discussed from the aspects of the distance between the longitudinal rib and the diaphragm of the bridge deck. The result is compared with the Humen Bridge which has been completed, which fully shows that the design result of this paper is reasonable and can be used as the design basis of the long-span steel box girder bridge deck. At the same time, it also proves the rationality of Humen Bridge design