旧水泥路面沥青加铺层夹层结构的力学分析

Finite Element Analysis of Interlayer in the Overlay of JCP Pavement

结合旧水泥混凝土路面加铺工程实践,在三维有限元的基础上分析了对于玻璃纤维格栅和土工布两种常见类型的加筋夹层结构,从理论及有限元力学分析上比较深入的研究了其在不同情况下抵抗反射裂缝的效果,分析夹层对减缓沥青层底开裂的作用,认为其能够较有效的抵抗反射裂缝,并提出合适的夹层模量取值,以及对于各类夹层其适用的加铺层厚度范围.

Form the practice of rehabilitation project of old PCC pavement, based on three-dimensional finite element method, the effect analysis of interlayer is carried out such as fiber glass geogrid and geotextile in the overlay of the old portland concrete cement pavement, especially for the effect of resisting reflective cracking. In order to resist reflective cracking effectively, the appropriate modulus of interlayer and the appropriate thickness of overlay are put forward with rigid interlayer.