连续配筋水泥混凝土路面温缩应力简化公式研究

连续配筋水泥混凝土路面（CRCP）在铺筑完成一段时间后，会在路面纵向上断裂成一个个单独的板块.借助正交设计和多元统计回归方法，在有限元计算的基础上，提出了单独板的温缩应力简化公式.极差分析结果表明，CRCP温缩应力影响因素的重要程度从大到小依次为：温度变化、裂缝间距、板厚、粘结刚度系数、钢筋直径、配筋间距.单因素单变量的回归分析，确定了温缩应力与各单个因素之间的大致关系.通过对各变量的假设组合分析，以单变量多因素的多元统计回归方法获得了一定精度的并能通过假设检验的拟合公式.误差分析表明，此公式的最大误差范围能控制在8%以内.

Simplified Formula Research on the Temperature Contraction Stress of Continuously Reinforced Concrete Pavement

Continuously reinforced concrete pavement (CRCP) will break into separate slabs in the longitudinal direction a few months after its construction.Based on the calculation results of finite element method (FEM), a simplified formula of separate slab''s temperature contraction stress was established by means of orthogonal design and multivariate statistical regression.Range analysis of the calculation results ranked the factors in the order of importance as follows: temperature change, crack spacing, slab thickness, bond-slip stiffness coefficient, bar diameter and bar spacing.Through single-factor and single-variable regression analysis, the general relationship between the temperature contraction stress and each factor was determined.A fitting formula was then obtained by single-variable and multi-factor multivariate statistical regression method through the assumption and combination analysis of each variable.The formula passed the hypothesis test, and error analysis showed that its maximum error range was controlled within 8%.