路基与半刚性基层间过渡层结构设计  

Structural design of transitional layer between subgrade and semi-rigid base

作　　者：王聪 张璐[2] 弋晓明[2] WANG Cong;ZHANG Lu;YI Xiaoming(Highway Monitoring and Response Center,Ministry of Transport of the P.R.C.,Beijing 100029,China;National EngineeringResearch Center of Road Maintenance Technologies,Beijing 100095,China)

机构地区：[1]交通运输部路网监测与应急处置中心,北京100029 [2]公路养护技术国家工程研究中心,北京100095

出　　处：《山东大学学报（工学版）》2019年第3期80-85,共6页Journal of Shandong University（Engineering Science）

基　　金：交通部科技资助项目(2006353337160)

摘　　要：路基与半刚性基层间的过渡层缺乏针对性的设计方法,在分析过渡层设置机理的基础上,通过对不同模量和不同厚度情况下过渡层的补强作用进行分析,提出补强递增系数以及最佳补强理论,并结合我国典型半刚性基层路面结构提出过渡层设计的经济模量及厚度。结果表明,过渡层的模量和厚度越大,补强作用越明显,但其补强效率越低;当过渡层模量为200~500MPa,且厚度不小于20 cm时,过渡层的补强效率较高。The special design of the transition layer between subgrade and semi-rigid base was scarce in the design system of pavement. The mechanism of the transition layer was studied, and then based on the analyses of reinforcing effect of transition layer under different modulus and thickness, the reinforcement incremental coefficient and optimal reinforcement model were proposed. Meanwhile, combined with typical semi-rigid base pavement structure, the economic modulus and thickness of transition layer were put forward. Results showed that the reinforcing effect was promoted as the increasement of the modulus and thickness of the transition layer, but the reinforcing efficiency was reduced. In order for higher reinforcing efficiency, the modulus of the transition layer should be 200~500 MPa, and the thickness should be not less than 20 cm.

关 键 词：过渡层 结构设计 补强递增系数 最佳补强理论 经济模量 

分 类 号：U416[交通运输工程—道路与铁道工程]