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连续配筋混凝土路面温度应力的有限元分析

Keywords: 道路工程,连续配筋混凝土路面,接触单元,温度应力

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Abstract:

为了准确计算连续配筋混凝土路面在温度作用下整个路段任意点的位移和应力,基于钢筋混凝土间粘结滑移效应,考虑地基摩阻力的影响,采用接触有限元理论建立了连续配筋混凝土路面的刚度方程,得出了考虑各个裂缝间隔段和锚固地梁之间联合作用的整个路段各部分应力和位移的有限元解。通过具体算例,研究了连续配筋混凝土路面在温度应力作用下的钢筋与混凝土各部分的位移和应变的分布情况。计算结果表明,若采用裂缝处钢筋位移为零的假设条件显得不尽合理,温度梯度的影响不可忽略,靠近端部的锚固地梁位移和内力最大。

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