摘要
为探究不同复合路面结构力学响应,选取3种复合路面结构,建立三维全尺寸有限元模型,计算了车辆荷载作用下路面表面弯沉、沥青层底拉应力和路基顶面压应变;为分析不同因素对3种复合路面结构力学响应的影响,选取了沥青层厚度、水泥混凝土层厚和层间接触关系3个因素进行敏感性分析。结果表明:3种复合路面结构路面表面弯沉和沥青层底拉应力变化曲线均呈“W”状,路基顶面压应变变化曲线均呈“V”状;复合路面结构的差异性对于路面表面弯沉和沥青层底拉应力影响较大,对于路基顶面压应变影响较小。
In order to investigate the mechanical responses of different composite pavement structures,three types of composite pavement structures were selected.Three-dimensional full-scale finite element models were established to compute the surface deflection of the pavement,the tensile stress at the bottom of the asphalt layer,and the compressive strain at the top of the subgrade under vehicle loading.A sensitivity analysis was conducted to evaluate the effects of different factors on the mechanical responses of three composite pavement structures.Three key factors were considered:the thickness of the asphalt layer,the thickness of the cement concrete layer,and the interlayer contact condition.The results show thatthe variation curves of surface deflection and tensile stress at the bottom of the asphalt layer for all three composite pavement structures exhibit a"W"shape,while the variation curve of compressive strain at the top of the subgrade shows a"V"shape.The differences among the composite pavement structures have a significant influence on surface deflection and tensile stress at the bottom of the asphalt layer,but a relatively minor influence on the compressive strain at the top of the subgrade.
作者
莫昌翔
MO Changxiang(Guangdong Yuelu Survey and Design Co.,Ltd.,Guangzhou Guangdong 510630,China)
出处
《广东公路交通》
2026年第1期37-42,共6页
Guangdong Highway Communications
关键词
公路工程
复合路面结构
力学响应
有限元分析
road engineering
composite pavement structure
mechanical response
finite element analysis
