关键词: 水泥混凝土路面, 加铺层, 界面端, 应力奇异性, 加铺层材料优选

Abstract: Interface end will be formed when cement concrete overlay or asphalt overlay is applied in cement concrete pavement． Stress singularity existing in the bonding interface of interface end is associated with the overlay material properties and below road material properties and different combination of the two materials will produce different stress singularity． The analysis of interface end's stress field shows that the singularity index of interface end has good correlation to the field parameter of stress field and can better reflect the stress singularity degree of overlay interface end，therefore，the singularity index of interface end can be directly used in the overlay materials' selection so as to avoid the complex field analysis． Based on the analysis of interface end's singularity index and conclusions of interface field analysis，the selection principles of cement concrete road materials are as follows: the overlay materials' property is similar to that of the original road materials， which can reduce the stress singularity degree of interface end so as to be more beneficial to the stress of road overlay．

Key words: cement concrete pavement, overlay, interface end, stress singularity, overlay materials preference