级配碎石过渡层沥青路面结构承载力分析  

Bearing Capacity Analysis of Asphalt Pavement Structure with Graded Aggregate Transition Layer

作　　者：张慧鲜 杨博 ZHANG Huixian;YANG Bo(Henan Communications Planning&Design Institute Co.,Ltd.,Zhengzhou 450052,China;Transport Industry R&D Center of Highway Construction and Maintenance Technology,Material and Equipment,Zhengzhou 450052,China)

机构地区：[1]河南省交通规划设计研究院股份有限公司,郑州450052 [2]交通运输行业公路建设与养护技术、材料及装备研发中心(郑州),郑州450052

出　　处：《路基工程》2023年第6期1-8,共8页Subgrade Engineering

基　　金：2019年度交通运输行业重点科技项目:在役典型沥青路面结构性能评价与养护技术研究(2019-MS2-032)。

摘　　要：调查确定级配碎石过渡层沥青路面典型结构,计算分析沥青层厚度、水泥稳定碎石层厚度、级配碎石过渡层模量、路基强度4类因素对沥青路面路表弯沉的影响;对比分析不同路基强度条件下,级配碎石过渡层沥青路面与典型半刚性基层沥青路面路表弯沉的关系。结果表明:路基强度对级配碎石过渡层沥青路面路表弯沉的影响最大;考虑不同路面结构形式对计算弯沉修正后,级配碎石过渡层沥青路面与典型半刚性基层沥青路面所能承受的荷载作用次数基本相当。Herein the typical structure of asphalt pavement with graded aggregate transition layer was determined according to the survey,and then how the four factors,including the thickness of asphalt layer,the thickness of cement stabilized macadam layer,the modulus of graded aggregate transition layer and the strength of subgrade,influence the surface deflection of asphalt pavement was calculated and analyzed,and how the surface deflection of asphalt pavement with graded aggregate transition layer relates to that of typical semi-rigid base asphalt pavement under different subgrade strength conditions was compared and analyzed.The results show that the subgrade strength has the greatest influence on the surface deflection of asphalt pavement with graded aggregate transition layer.After the calculated deflection was corrected by taking different forms of pavement structure into consideration,the frequencies of load effect that the asphalt pavement with graded aggregate transition layer and the typical semi-rigid base asphalt pavement can withstand are roughly equivalent.

关 键 词：碎石过渡层 沥青路面 倒装结构 半刚性路面 弯沉 结构承载力 

分 类 号：U416[交通运输工程—道路与铁道工程]