Modeling humidity and stress-dependent subgrade soils in flexible pavements
作者: Junhui PengJunhui ZhangJue LiYongsheng YaoAnshun Zhang
作者单位: 1National Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China
2School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China
刊名: Computers and Geotechnics, 2020, Vol.120
来源数据库: Elsevier Journal
DOI: 10.1016/j.compgeo.2019.103413
关键词: Finite elementResilient modulus modelNonlinear characteristicSubgrade soilsFlexible pavement
英文摘要: Abstract(#br)This study aimed to develop a finite element model to simulate the flexible pavement structure by considering the nonlinear characteristics of subgrade soils which are related to humidity and stress. First, an analytical model was proposed and proven to quantify the effect of the humidity and stress on the resilient modulus of subgrade soils. Second, a UMAT was programmed to characterize nonlinear moisture and stress-sensitive relationship of subgrade soils. Then, the humidity field values of subgrade were calculated by GEOSTUDIO and verified by field measurement. Meanwhile, the humidity field values were imported into ABAQUS through MATLAB. Finally, the UMAT was implemented in the finite element model of flexible pavement structures. The finite element simulation indicated...
全文获取路径: Elsevier  (合作)
影响因子:1.224 (2012)

  • subgrade 路基
  • pavement 人行道
  • flexible 接电绳
  • modulus 系数
  • humidity 湿度
  • element 元素
  • characteristic 特有的
  • stress 应力
  • dependent 从属的
  • model 模型