高速公路路基工作区深度应用分析

Analysis of Deep Application of Roadbed Work Area in Expressway

针对高速公路倒装结构,文中以某高速公路为依托,基于弹性层状体系理论,应用ABAQUS有限元软件,研究轴载、路基模量对路基力学响应。结果表明,轴载对路基工作区深度影响显著,轴载从100 KN增加到200 KN时,路基工作区深度增幅可达104.7%;路基模量对路基工作区深度有一定影响,路基回弹模量由40 MPa增大到70 MPa时,路基工作区深度增大了12.8%,工程中,需要根据实际工况确定高速公路路基工作区深度,确保路基工作区稳定。Regarding the inverted structure of highways, taking a certain highway as a support, based on the theory of elastic layered systems and ABAQUS finite element software, this article studies the mechanical response of axle load and roadbed modulus to the roadbed. The results show that axle load has a significant impact on the depth of the roadbed working area. When the axle load increases from 100 KN to 200 KN, the depth of the roadbed working area can increase by 104.7%;The roadbed modulus has a certain impact on the depth of the roadbed working area. When the roadbed rebound modulus increases from 40 MPa to 70 MPa, the depth of the roadbed working area increases by 12.8%. In engineering, it is necessary to determine the depth of the highway roadbed working area based on actual working conditions to ensure the stability of the roadbed working area.