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某公路通车15年来,路面出现了较为严重的病害,行车道路面损坏较多,全路段超车道中路面损坏以横向裂缝为主,其他损坏较少;填方路基由于压实的不均匀,完工后多有沉降,且高填方路段路面出现沉陷、开裂等病害。导致服务功能明显下降,严重影响交通安全和行车速度。本文以该项目为例,介绍旧水泥混凝土上沥青加铺层的设计过程方法,以供类似工程参考。
In the past 15 years since the opening of a highway, there have been more serious diseases in the pavement, and there are more road pavement damage. The pavement damage caused by overtaking lanes in the whole section is dominated by horizontal cracks with less damage to others. As the subgrade is filled unevenly due to compaction, Subsequent settlement, and high-fill pavement subsidence, cracking and other diseases. Resulting in a marked decline in service functions, seriously affecting traffic safety and traffic speed. Taking this project as an example, this paper introduces the design process of asphalt overlay on old cement concrete for reference of similar projects.