气态水与液态水综合作用下的路面力学结构响应——以江门市银洲湖高速公路项目为例  

Mechanical Structural Response of Pavement under the Combined Effects of Gaseous and Liquid Water:Taking the Yinzhouhu Expressway Project in Jiangmen City as an Example

作　　者：谭锦志 TAN Jinzhi(Jiangmen Yinzhouhu Highway Co.LTD.,Jiangmen 529000,Guangdong,China)

机构地区：[1]江门市银洲湖高速公路有限公司,广东江门529000

出　　处：《科技和产业》2025年第2期257-262,共6页Science Technology and Industry

摘　　要：为探究沥青路面水损害产生的原因及机理,利用有限元软件ABAQUS,结合广东省银洲湖高速公路路面结构组合,并基于渗流理论,分别建立常规水气浓度场、实际非均匀水气浓度场及综合考虑实际非均匀水气浓度场和饱和液态水的三种工况下有限元模型,分析路面在不同工况下的力学响应。结果表明:实际非均匀水气浓度场的存在增大了上面层开裂风险,随着降雨导致的液态水介入,面层处在正负交替的孔隙水压力中,反复冲刷疲劳开裂部位,进一步加速沥青与集料剥离,最终导致水损害相关病害,而上面层经受的空隙水压力最为严重,因此路面在设计过程中,应重点增强上面层的抗水损能力。In order to explore the cause and mechanism of water damage on asphalt pavement,the finite element software ABAQUS was used,combined with the pavement structure combination of Yinzhou Lake Expressway in Guangdong Province,and based on the seepage theory,the finite element models under the three working conditions of conventional water concentration field,actual non-uniform water concentration field and comprehensive consideration of actual non-uniform water concentration field and saturated liquid water were established respectively.The mechanical response of pavement under different working conditions was analyzed.The results show that the actual presence of non-uniform water vapor concentration field increases the cracking risk of the upper layer.With the intervention of liquid water caused by rainfall,the surface layer is in the alternating positive and negative pore water pressure,repeatedly scour the fatigue cracking site,further accelerating the stripping of asphalt and aggregate,and finally leading to water damage related diseases.The upper layer is subjected to the most serious void water pressure.Emphasis should be placed on enhancing the water damage resistance of the upper layer.

关 键 词：沥青路面 水损害 水气浓度场 液态水 力学响应 

分 类 号：U416.1[交通运输工程—道路与铁道工程]