沥青混合料组成差异对沥青路面结构疲劳寿命的影响分析  

Influence of Asphalt Mixture Composition Difference on Fatigue Life of Asphalt Pavement Structure

作　　者：刘锋 许新权 张国民 LIU Feng;XU Xinquan;ZHANG Guomin(Guangdong Hualu Transport Technology Co. LTD., Guangzhou 510420, China;Research and Development Center on Road Transport Safety and Emergency Support Technology & Equipment, Ministry of Transport, Guangzhou 510420, China;Guangdong Jiaoke Testing Co. Ltd., Guangzhou 510420, China)

机构地区：[1]广东华路交通科技有限公司,广州510420 [2]公路交通安全与应急保障技术及装备交通运输行业研发中心,广州510420 [3]广东交科检测有限公司,广州510420

出　　处：《武汉理工大学学报（交通科学与工程版）》2021年第5期930-934,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：为了分析不同类型集料和配合比对沥青路面结构疲劳寿命的影响,以广东省仁新高速试验段的路面结构为例.通过UTM130试验机和汉堡车辙仪等获得不同类型沥青混合料的动态压缩模量和车辙试验结果.以沥青混合料试验获得的相关参数为基础,通过建立的路面结构有限元模型,分析得到该路面结构在标准双圆均布垂直荷载作用下的力学响应.将试验与理论分析结果相结合,反算分析得到不同类型沥青混合料路面结构的疲劳寿命.分析结果显示:不同的沥青混合料组成会给沥青路面结构的疲劳寿命带来2~3倍的差异.在进行沥青路面设计时,不仅需要考虑沥青混合料的力学性能和路用性能,还需考虑其对沥青路面结构疲劳寿命的影响.In order to analyze the influence of different types of aggregates and mixing ratio on the fatigue life of asphalt pavement structure,the pavement structure of the test section of Renxin Expressway in Guangdong Province was studied as an example.The dynamic compression modulus and rutting test results of different asphalt mixtures were obtained by UTM130 testing machine and Hamburg rutter.Based on the relevant parameters obtained from asphalt mixture test,through the finite element model of pavement structure,the mechanical response of the pavement structure under the standard double circular uniform vertical load was analyzed.Combining the test results with theoretical analysis results,the fatigue life of different types of asphalt mixture pavement structures was obtained by back calculation and analysis.The results show that different asphalt mixture composition will bring about 2~3 times difference in fatigue life of asphalt pavement structure.Therefore,when designing asphalt pavement,we should not only consider the mechanical properties and road performance of asphalt mixture,but also consider its influence on the fatigue life of asphalt pavement structure.

关 键 词：道路工程 力学性能 路用性能 疲劳寿命 

分 类 号：U416[交通运输工程—道路与铁道工程]