摘要
山区高速公路的地质条件一般不同于平原地区,其土基回弹模量值较大。结合承赤高速公路的具体特点,应用有限元法,系统研究了土基回弹模量变化对半刚性基层沥青路面路表弯沉、基层层底拉应力等指标的影响,给出了山区高速公路沥青路面的优化结构形式。
The geological condition of expressway in mountain area is different from plain area. The resilience modulus of soil subgrage of the former is greater than the latter. Combining with the specific characteristics of Chengde-Chifeng Expressway, the paper studies the influence of the change of resilience modulus of soil subgrage on the surface settlement of asphalt pavement with semi-rigid base, the tensile stress at bottom of base and other indexes based on the limited element method, and puts forward the optimized structural type of asphalt pavement of expressway in mountain area.
出处
《交通标准化》
2013年第20期46-48,共3页
Communications Standardization
关键词
土基回弹模量
沥青路面
弯沉
路面结构
modulus of resilience of soil subgrage
asphalt pavement
settlement
pavement structure
