摘要
为探究共振碎石化路面结构加铺沥青层的空间力学响应规律,通过ABAQUS软件建立路面三维有限元模型,分析了各力学响应指标的空间分布形态、峰值大小及特征,最大剪应力在路面结构4~6cm处,最大主应力分布云图呈现“正覆两盆式”分布,路基竖向压应变累积效果明显。总结了共振碎石化路面加铺沥青层结构设计的关键要素,为类似路面结构设计指标的验算提供参考。
To explore the spatial mechanical response law of the asphalt layer on the resonant gravelized pavement structure, a three-dimensional finite element model has been established through the ABAQUS software. In this paper, the spatial distribution form, peak size and feature extraction of each mechanical response index have beenanalysized. The maximum shear stress is located in 4-6 cm of the pavement structure. The cloud map of the maximum principal stress distribution presents a "two basins" distribution. Apart from that, the vertical compressive strain accumulation effect of the subgrade is obvious. The key elements of the structure design of the asphalt layer on the resonant gravelized pavement have been summed up. Reference of check calculation of structural design indicators for similar pavement has been provided.
作者
杨顺家
袁文治
YANG Shunjia;YUAN Wenzhi(Transportation Bureau of Chenghai District,Shantou City,Shantou 515800;Key Laboratory of Road and Traffic Engineering of Ministry of Education,Tongji University,Shanghai 201804)
出处
《广东公路交通》
2022年第2期1-6,共6页
Guangdong Highway Communications
基金
国家自然科学基金面上项目(编号:51778482)。
关键词
道路工程
旧水泥混凝土路面
共振碎石化
力学响应
三维有限元模拟
road engineering
old cement concrete pavement
resonance crushing
mechanical response
three-dimensional finite element simulation
