水泥混凝土路面基层应力验算必要性探讨

针对现行《公路水泥混凝土路面设计规范》，通过双层板应力分析，研究在合理的基层厚度与面板厚度范围内，进行基层应力验算的必要性。利用等刚度原理和几何推导的方法，分析了基层板温度应力，并验证了基层应力验算的必要性。结果表明，在合理范围内的累计荷载作用下，规范建议的基层与面板厚度范围内，由于面板的模量远大于基层的模量，在进行刚性、半刚性基层水泥混凝土路面厚度设计时，仅需验算面层板的应力，而无需验算任何材料基层的应力。

Discussion of Base Course Stress Checking Necessity in the Design of Cement Concrete Pavement

Under the existing Specifications of Cement Concrete Pavement Design for Highway,through the stress analysis of the two-layer slab,the necessity of checking stress of the base slab in a reasonable thickness of the two-layer slab was researched.The temperature stress of the base slab was analyzed and the necessity of stress checking of the two-layer slab was verified by using the equal rigidity theory and the geometric method.The results show that within the Specifications recommended thickness of the two-la...