设防水层的混凝土桥桥面铺装结构剪应力计算与分析

The Shearing Stress of Concrete Bridge Decks with Waterproof Layer

应用有限元法 ,对设防水层的水泥混凝土桥桥面沥青铺装结构进行剪应力计算 ,分析了防水层的厚度、模量、泊松比、沥青混凝土铺装层厚度和模量等参数对结构层剪应力的影响 ,认为层间最大剪应力主要取决于面层厚度和防水层模量 ,相同的防水层模量通过增加面层厚度是降低层间剪应力的最有效手段。在计算与分析的基础上 。

The finite element method is employed to analyze the shearing stress of the concrete bridge decks with waterproof layer.The influence of the thickness,modulus Poisson's ratio of waterproof layer and the thickness,modulus of AC and modulus of concrete on the shearing stress are analyzed.The conclusion is that the thickness of AC and the modulus of waterproof layer mainly determine the maximum interlayer shearing stress,so increasing the thickness of AC is the most effective means to reduce the maximum interlayer shearing stress.Based on the calculation and analysis,the abac for shearing stress calculation in the range of normal parameter is obtained.