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纵横梁桥面系统中主梁的跨度较长,纵梁上直接承受的车队荷载数量多且数值大,主梁设计中绝对最大挠度的确定是关键内容.研究了一组平行车队荷载直接沿着纵梁移动时,主梁承受结点活载下绝对最大挠度数学模型的建立;并给出了相应的计算方法,以计算机为工具,适用于任意有限多个平行移动荷载作用工况,对于主梁的设计计算与安全评估,有一定的实用价值.
Longitudinal and transverse girder bridge deck system has longer span of main girder and more fleet load directly bear on the longitudinal girder, and the determination of absolute maximum deflection in main girder design is the key issue. When the longitudinal beam is moving, the main beam is subjected to the establishment of the mathematical model of the absolute maximum deflection under the live load of the node, and the corresponding calculation method is given. Using the computer as a tool, it is suitable for any finite number of parallel moving loads. Beam design calculation and safety assessment, has some practical value.