关于简支板桥考虑铺装层混凝土参与受力问题的分析

在计算简支板桥时，如果非常精确地考虑铺装层混凝土参与受力，将使计算的复杂程度大大增加。从工程设计的实际需要出发，通过设计实例分析了考虑铺装层混凝土参与受力所带来的若干问题，最后得出结论：在计算简支板的强度和应力时可忽略铺装层混凝土与预制板混凝土的强度级别的差异，在计算裂缝宽度时可忽略分期加载的影响，从而简化计算过程。

Analysis of Problem that Paving Coverage Concrete on Simply-Supported Slab Bridge Participates in Bearing

When calculating the simply-supported slab bridge, if the problem that paving coverage concrete participates in bearing is extremely exactly considered, the complex degree in calculation will greatly grows. Proceed from real needs for project disign, the paper analyzes several problems that are brought by paving coverage concrete participates in bearing, by design example. Drawn conclusions are that as calculating the strength and stress of simply-supported slab, the difference in strength grades between paving coverage concrete and precast slab concrete could be neglected, and at calculating the crack width, the influence of loading by stages could be neglected as well, so simplifying process of calculation.