Study on the Settlement Characteristics and Reinforcement Technology of Unsaturated Soil Ground of High-Speed Railway

The restricting of post-construction settlement of railway subgrade is a key technology to designing and constructing high-speed railway. The consolidation settlement of unsaturated soil ground is more than saturated soil, so it is difficult to control post-construction and plan construction period. In this article, the author monitors the variance of settlement of the typical unsaturated silty clay or silt ground in Jiaozhou peninsula and northern China, analyses the settlement law of unsaturated soil ground, and examines reinforcement effects on ground by the use of dynamic compaction and soil-cement pile. The outcome the of experiment shows that, the settlement of the shallow ground within the depth of six meters is more than sixty percent of the whole for the unsaturated silt or silty clay ground. Having been reinforced by dynamic compaction and soil-cement pile, the unsaturated soil ground meets the design requirement of high-speed railway subgrade. Comparing to dynamic compaction, the settlement of unsaturated subsoil reinforced with soil-cement pile decreased, and the consolidation settlement velocity sped up. It is therefore beneficial to control the post-construction settlement of unsaturated silty clay or silt soil ground by soil-cement pile. It should be given priority to adopt this reinforcement measure in engineering practice.

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• Supplemental Notes:
  • Abstract reprinted with permission from Taylor and Francis.
• Corporate Authors:

  CRC Press/Balkema

  P.O. Box 447
  2300 AK Leiden,   Netherlands 
• Authors:
  • Lijun, Wu
  • Guanlu, Jiang
• Conference:
  • 2nd International Conference on Transportation Geotechnics (ICTG)
  • Location: Hokkaido , Japan
  • Date: 2012-9-10 to 2012-9-12
• Publication Date: 2012

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References;
• Pagination: pp 254-258
• Monograph Title: Advances in Transportation Geotechnics II

Subject/Index Terms

• TRT Terms: Design; High speed rail; Material reinforcement; Railroad construction; Settlement (Structures); Soil cement; Subgrade materials; Subsoil
• Geographic Terms: China
• Subject Areas: Construction; Design; Geotechnology; Railroads; I22: Design of Pavements, Railways and Guideways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01470992
• Record Type: Publication
• ISBN: 9780415621359
• Files: TRIS
• Created Date: Jan 30 2013 10:59AM