Field Tests on Composite Deep-Mixing-Cement Pile Foundation under Expressway Embankment

Anti-slide behavior of road foundation under embankment is of great importance to embankment stability in expressway engineering. Three kinds of field tests on anti-slide behavior of one expressway soft foundation improved by deep-mixing-cement pile (DMCP) are conducted, which include nature soft foundation test, single-pile foundation test and four-pile foundation test. Stress cells are placed in order to investigate the distributions of vertical stresses along the DMCP shaft during the filed tests. The investigated data show that anti-slide strength of the soft foundation increases greatly after the DMCP improvement. Single—pile foundation test and four-pile foundation test provide similar cohesion forces and friction angles, but they have different types of vertical stress growth process. Change of horizontal force only makes a little difference to vertical stress of DMCP below 6.0 m depth. This study can provide good base for relative design of expressway engineering.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 62-67
  • Monograph Title: Slope Stability, Retaining Walls, and Foundations: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01142098
  • Record Type: Publication
  • ISBN: 9780784410493
  • Files: TRIS
  • Created Date: Oct 13 2009 5:00PM