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介绍了夹层桥面板的力学特点及在国外用夹层板技术加固正交异性钢桥面板的试点工程实例,并分别建立相同尺寸的正交异性钢桥面板和夹层板技术加固后夹层桥面板模型,施加相同的边界条件和相同的荷载,经过有限元计算分析,结果表明:加固后夹层桥面板大大提高了原桥面板的刚度及承载力,能够有效预防疲劳裂缝的产生,可以在正交异性钢桥面板修复和替换中起到很好的作用,证实了夹层板技术是一种加固正交异性钢桥面板新颖、合适和有效的方法。
The mechanical characteristics of mezzanine slab deck and the pilot project of reinforcing orthopedic steel deck with mezzanine slab in foreign countries are introduced. And the mezzanine slab deck model with the same size of orthotropic steel deck and mezzanine slab is established, The same boundary conditions and the same load are applied to the finite element analysis. The results show that the strengthened bridge deck greatly enhances the stiffness and bearing capacity of the original bridge deck, can effectively prevent the generation of fatigue cracks, and can be used in the orthotropic steel Bridge deck repair and replacement play a good role, confirmed that the sandwich plate technology is a new method of strengthening orthotropic steel bridge deck novel, suitable and effective.