公路柔性基层沥青路面验收弯沉计算研究  

Study on Calculation of Acceptance Deflection of Highway Flexible Base Asphalt Pavement

作　　者：李树仁 范剑伟 徐光霁 Li Shuren;Fan Jianwei;Xu Guangji(Anhui Highway and Bridge Engineering Co.,Ltd.,Hefei 230031,China;School of Transportation,Southeast University,Nanjing 211189,China)

机构地区：[1]安徽省公路桥梁工程有限公司,安徽合肥230031 [2]东南大学交通学院,江苏南京211189

出　　处：《市政技术》2021年第12期17-21,共5页Journal of Municipal Technology

基　　金：江苏省自然科学基金(BK20180404);东南大学优秀青年教师科学研究资助项目(2242021R41132);道路交通工程国家级实验教学示范中心(东南大学,江苏南京,211189)。

摘　　要：提出了一种公路柔性基层沥青路面路表弯沉验收过程的计算方法,针对实测时路基模量与设计路基模量的差异,给出了公路柔性基层沥青路面典型结构中路基模量的反算公式。根据各沥青层模量随温度变化明显的特征,先直接估算各沥青层检测时的温度,再代入回归公式求出各层模量。最终将所计算的各沥青层模量、反算的路基模量与水稳碎石、级配碎石模量的推荐值一并代入弹性层状体系,直接计算不同弯沉检测状态下的验收弯沉值,现场应用效果较好。A calculation method of accepting deflection of flexible base asphalt pavement in highway was presented in this paper.In the light of difference between subgrade modulus of measured and designed,inversion formulas were given.According to the obvious modulus changes of each asphalt layer with temperature,the temperature of each asphalt layer during deflection detection was directly estimated,and then the modulus was calculated by substituting into regression formulas.Finally,all of the calculated modulus of each asphalt layer,the inverse calculated subgrade modulus and the recommended values of cement stabilized macadam and graded macadam were substituted into the elastic layered system to directly calculate the acceptance deflection value under different deflection detection states.The method shows good effect in field.

关 键 词：公路 柔性基层 沥青路面 弯沉 验收 

分 类 号：U416.21[交通运输工程—道路与铁道工程]