【摘要】 对于结构体系较为复杂的桥梁结构,研究其截面的剪力分布能有效指导其结构的横向设计。以海南省万宁旅游公路上的关键节点太阳河桥为例,引出了双跨中承式拱梁组合桥的结构体系,并对其主梁部分的剪力分配进行研究。采用了大型有限元分析软件对主梁节段采用实体单元进行模拟,得出了在不同边界条件下截面各部分所承担的竖向剪力大小与比例,为主梁的横向设计与计算提供了依据。在工程设计中特别是对于结构体系复杂的桥梁,应重视斜腹板角度较大的箱型截面剪力分配结果,其对桥梁准确设计有着重要的意义。更多还原

【Abstract】 Analysis the shear distribution of the section is meaningful for the transverse design of the complex bridge structure.Taking the Sun River Bridge on the Wanning tourist road in Hainan for example,which is the two span half-through arch-girder combination bridge,the research on the shear distribution is completed.The solid elements models were used to analysis the girder with finite element software.The vertical shear distribution under different boundary condition was concluded,which provide the basis for the transverse design and analysis of the girder.The shear distribution of the box girder,especially the extremely inclined web,was very important for the accurate design of complex bridge structure.更多还原