Application of Concrete-Cored DCM Pile in Soft Ground Treatment of Highway Bridgehead

Concrete-cored deep cement mixing (DCM) pile was introduced to reinforce soft ground of highway bridgehead. It is composed of an inner precast concrete pile and an external DCM pile socket, where the high strength concrete pile is designed to bear loads, and DCM pile socket acts to transfer axial force into the surrounding soils by skin frictions. The results obtained from the static load tests and settlement observations show that the bearing capacity and settlement of concrete-cored DCM pile can meet the engineering needs well, which is better than ordinary cement mixing pile. From axial force-depth curves of inner concrete pile and load-settlement curves, concrete-cored DCM pile composite foundation has the characteristics of rigid pile, and the low pile-soil stress ratio also indicates its characteristics of flexible pile. Therefore, concrete-cored DCM pile is a rigid-flexible transition pile and suitable for the soft ground treatment at bridgehead to lessen the phenomenon of vehicle bump.

• Record URL:
  https://doi.org/10.1061/9780784412350.0012
• Availability:
  • Find a library where document is available. Order URL: http://www.asce.org/Product.aspx?ID=25769810521&ProductID=172597548
• Supplemental Notes:
  • © 2012 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Gao, Xin-Nan
  • Liu, Songyu
  • Dong, Ping
• Conference:
  • Fourth International Conference on Grouting and Deep Mixing
  • Location: New Orleans Louisiana, United States
  • Date: 2012-2-15 to 2012-2-18
• Publication Date: 2012

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 261-271
• Monograph Title: Grouting and Deep Mixing 2012

Subject/Index Terms

• TRT Terms: Highway bridges; Load tests; Piles (Supports); Precast concrete; Soft soils; Soil stabilization; Static loads
• Uncontrolled Terms: Deep cement mixing; Soil mixing
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials; I32: Concrete; I42: Soil Mechanics;

Filing Info

• Accession Number: 01526651
• Record Type: Publication
• ISBN: 9780784412350
• Files: TRIS, ASCE
• Created Date: May 29 2014 10:15AM