CRCP在重载、复合式路面中具有良好的应用前景,其结构受力可划分为荷载应力和温度应力,其中温度应力又包含均匀温度变化和翘曲2个方面。均匀温降时的CRCP受力可简化为3种材料的相互作用:水泥混凝土、钢筋和地基,在有限元中如何描述三者之间的相互作用是计算的基础。根据已有双线性地基模型,分析了地基摩阻的解析解,通过对比不同地基材料属性情况下的摩擦应力特征数,证明了地基摩阻对CRCP均匀温降下的受力影响可以忽略;为了在有限元中模拟水泥混凝土与钢筋间的相互作用,建立了粘结刚度系数向弹簧单元刚度系数的等效转换关系式,并进行了对比分析,验证了其正确性,提供了CRCP有限元分析中弹簧单元模拟钢筋与混凝土界面的关键参数。最后,在以上分析基础上,对包含不同纵向钢筋数量的板条进行计算对比,结果表明板宽对CRCP沿钢筋轴向的各计算结果无显著影响。因此,均匀温降条件下有限元受力分析时,可采用含少数纵向钢筋的板条代替真实尺寸结构。 CRCP has good application prospects in heavy-duty and compound pavements. Its structural stress can be divided into load stress and temperature stress, of which temperature stress also includes two aspects of uniform temperature change and warpage. The CRCP stress at uniform temperature drop can be simplified to the interaction of three materials: cement concrete, steel bar and foundation. How to describe the interaction between the three in the finite element method is the basis of calculation. According to the existing bilinear foundation model, the analytic solution of the foundation friction is analyzed. By comparing the characteristics of the friction stress under different material properties, it is proved that the influence of the foundation friction on the stress under the uniform temperature drop of CRCP can be neglected. In the finite element simulation of the interaction between cement and concrete, the equivalent conversion coefficient of the coefficient of stiffness of the bond to the stiffness of the spring element is established and compared, and the correctness is verified. The CRCP finite element analysis The spring unit simulates the key parameters of the interface between steel and concrete. Finally, based on the above analysis, the comparison of the slats with different longitudinal reinforcement numbers shows that the slab width has no significant effect on the results of CRCP along the reinforcement axis. Therefore, in the condition of uniform temperature drop under finite element stress analysis, the slab with a few longitudinal bars may be used instead of the real size structure.