连续配筋混凝土路面一维非线性力学分析

One-Dimensional Nonlinear Analysis of Continuously Reinforced Concrete Pavements

考虑钢筋与混凝土之间的非线性粘结滑移关系及混凝土面板与地基之间的非线性摩阻滑移关系,采用数值迭代法建立了连续配筋混凝土路面在温缩和干缩作用下横向开裂的一维非线性力学分析方法,从而同时获得裂缝间距、裂缝宽度与钢筋应力3个设计指标的结果,编制了迭代法计算程序CRCPAP。对耒宜高速公路连续配筋混凝土路面的横向开裂进行了非线性分析,得到了应力和位移沿板长的分布规律,并提出了连续配筋混凝土路面横向开裂产生区、过渡区和安全区3个区域的概念和范围。

A numerical iteration method with one-dimension nonlinear mechanical modeling was (created) to analyze the transverse cracking of continuously reinforced concrete pavement subjected to (temperature) and drying shrinkage with consideration of the nonlinear bond slip between steel bar and (concrete) and the (nonlinear) friction slip between concrete slab and subgrade. The three design (indexes), such as crack spacing, crack width and steel stress, were obtained simultaneously. The program (CRCPAP) with the iteration method was developed. Finally, the nonlinear numerical method was (adopted) to analyze the transverse crack of continuously reinforced concrete pavement in Lei-Yi (Expressway). The distributions of stresses and displacements among slab length are calculated. Then the (definition) and range of 3 transverse crack (areas) of continuously reinforced concrete pavement were put (forward), including crack producing area, crack (transiting) area and crack safety area.