摘要
为了准确计算连续配筋混凝土路面(CRCP)在温度荷载作用下的端部位移,基于结构力学的基本理论,以端部设置3道锚固地梁的连续配筋混凝土路面为例,将力学模型分解成三种基本结构。按照位移法的基本思路,推导各种基本结构的刚度系数。首次建立综合考虑路面板与锚固地梁联合受力的连续配筋混凝土路面在温度荷载作用下的位移法典型方程。然后将路面部分中各基本结构的端点位移作为新的边界条件,得出路面各部分在温度荷载作用下的位移和应力的解析解。并与大型有限元分析ANSYS软件的计算结果进行对比,对比结果表明所推导的解析解是正确的、合理的。通过对实际算例分析,得出在位于端部200m左右的范围内CRCP因整体温差引起的位移较大,而道路中段的位移较小,基本接近于零。
In order to calculate the displacement of the anchored end of continuously reinforced concrete pavement accurately,based on structural mechanics,taking as example for the CRCP with 3 beams-on-foundation in the anchored end,the mechanical model of CRCP is divided into 3 basic structures.The coefficient of stiffness for the basic structures is derived by using the concept of the displacement method.Under thermal stress,the displacement method basic equation for combining the continuously reinforced concrete pavement（CRCP） with the anchored end is proposed.Using the end displacement of the pavement as the boundary condition,an analytical solution of the displacement and stress under thermal stress is obtained.The results of ANSYS software show that the analytical solution is accurate.Case analysis indicates that the displacement of CRCP in the range of 200 meter of the end is relatively large,and the displacement of the middle section of the road is close to zero.
出处
《土木工程学报》
EI
CSCD
北大核心
2010年第10期135-140,共6页
China Civil Engineering Journal
基金
吉林省交通厅项目(2004-4-13)
吉林省教育厅项目(吉教科合字[2006]第95号)
关键词
道路工程
连续配筋混凝土路面
端部锚固
解析解
road engineering
continuously reinforced concrete pavement（CRCP）
end anchorage
analytical solution
