Long-Term Deformation Used as Indicator Representative of Highway Embankment on Soft Foundation

For the highway embankments on soft foundations, excessive long-term settlement and deformation are usually seen as a result of consolidation. The authors consider that settlement and deformation of highway embankments are the indicators effectively applicable to road asset management. A set of indicators describing the long-term deformation of the deteriorating fill body may be a sort of promising indicators to predict the change in pavement functionality and degree of pavement damage in the future. This paper discussed the indicators representative of highway embankments on soft foundation and the applicability of soil-water coupled finite element analysis as a tool for supporting road asset management. The analysis was conducted in analyzing the 20 years old existing highway embankment and its predictability of settlement and deformation during and after construction was verified. This analysis could successfully simulate the long-term stress deformation behavior of the actual road embankment resulting in the analyzed performance of the embankment in accordance with the performance monitored at the site. Based on the results of the simulation, the life-cycle cost analysis of the highway embankment on soft foundation was conducted and compared with cost actually needed in the past 20 years.

• Corporate Authors:

  World Road Association (PIARC)

  La Grande Arche, Paroi Nord, Niveau 5
  F-92055 La Defense Cedex,   France 
• Authors:
  • Ishigaki, T
  • Nemoto, N
  • Toyota, K
• Conference:
  • Choice for Sustainable Development. Pre-Proceedings of the 23rd PIARRC World Road Congress
  • Location: Paris , France
  • Date: 2007-9-17 to 2007-9-21
• Publication Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Photos; References; Tables;
• Pagination: 16p
• Monograph Title: The Choice for Sustainable Development. Pre-Proceedings of the 23rd PIARC World Road Congress

Subject/Index Terms

• TRT Terms: Deformation; Embankments; Finite element method; Life cycle analysis; Pavement distress; Pavement maintenance; Pavement performance; Pavements; Subbase (Pavements); Subbase materials
• Subject Areas: Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces; I42: Soil Mechanics;

Filing Info

• Accession Number: 01081293
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 26 2007 1:42PM