【摘要】 采用通用非线性有限元程序ABAQUS分析了淮盐高速公路试验路4种路面结构的工后沉降、不均匀沉降及层底拉应力。分析结果表明,在两层半刚性基层之间或刚性与半刚性基层之间设置级配碎石夹层的路面结构有较好的抵抗塑性变形的能力。有效减缓软土地基不均匀沉降对沥青面层造成的不利影响。由此,提出了不同于常规的半刚性基层沥青路面,具有应力消散能力,适应于软土地基的合理沥青路面结构。更多还原

【Abstract】 By adopting the general-purpose non-linear finite element ABAQUS,analysis is made of post-settlement,differential settlement and tensile stress at the bottom of four pavement structures of Huaiyan expressway test sections.The analysis results show that the pavewent structure with graded aggregate placed between two layers of semi-rigid base or between semi-rigid base and rigid base would be better against plastic deformation,so that the adverse affect caused by differential settlement of soft ground would be mitigated.Reasonable asphalt pavement structures different from conventional semi-rigid base asphalt pavement and suitable on soft ground are put forward.更多还原