Prediction of Long-term Subgrade Deformation under Cyclic Loadings with the Implicit-explicit Transition Method Using Finite Elements

Calculating accumulated soil deformation caused by millions of cyclic loadings with finite element simulating calculation is usually limited by storage space and physical error accumulation. The implicit method with which the constitutive relation of soil can be well described in fact cannot satisfy the finite element calculation on millions of times of cyclic loadings. With the research on the long-term deformation of soil under cyclic loadings, it is evident that this process has a similar character with the process of creep deformation of materials. In addition, the two experience expressions describing the two deformation process are also analogues. Based on these, a new idea to forecast soil deformation under high accumulated cyclic loadings is proposed in this paper. With this idea, the time-wasting and space-wasting problems in finite element calculation implementation is solved. Comparing the finite element calculation results and the dynamic triaxial experiment results, the accuracy of the idea is proved. With the comparison between the practical measured results of detection on highspeed railway section and finite element calculation results, the idea is further proved that it can represent the regularity and tendency of soil deformation under long-term cyclic loadings on a high-speed railway.

• Summary URL:
  • https://doi.org//10.2495/CR140721
• Summary URL:
  • http://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/135/27128
• Availability:
  • Find a library where document is available. Order URL: http://www.witpress.com/books/978-1-84564-766-7
• Supplemental Notes:
  • Abstract reprinted with permission from WIT Press.
• Corporate Authors:

  WIT Press

  Ashurst Lodge
  Ashurst, Southampton  United Kingdom  SO40 7AA
• Authors:
  • Zhuang, K
  • Quanmei, G
  • Yang, W
• Conference:
  • 14th International Conference on Railway Engineering Design and Optimization (COMPRAIL 2014)
  • Location: Rome , Italy
  • Date: 2014-6-24 to 2014-6-26
• Publication Date: 2014

Language

• English

Media Info

• Media Type: Web
• Pagination: 11p
• Monograph Title: Computers in Railways XIV. Railway Engineering Design and Optimization
• Serial:
  • WIT Transactions on the Built Environment
  • Volume: 135
  • Publisher: Wessex Institute of Technology
  • ISSN: 1743-3509
  • Serial URL: http://library.witpress.com/pages/listBooks.asp?tID=2

Subject/Index Terms

• TRT Terms: Deformation; Finite element method; High speed track; Repeated loads; Simulation; Soils; Subgrade (Pavements)
• Subject Areas: Geotechnology; Maintenance and Preservation; Railroads; I42: Soil Mechanics;

Filing Info

• Accession Number: 01552564
• Record Type: Publication
• ISBN: 9781845647667
• Files: TRIS
• Created Date: Feb 2 2015 10:27AM