USE OF DEEP CEMENT MIXING TO REDUCE SETTLEMENTS AT BRIDGE APPROACHES

Differential settlements between a bridge and the backfill behind the abutment have been a major problem in the construction of expressway embankments over a soft clay foundation. Deep cement mixing (DCM) columns with varying lengths were used to reduce such differential settlements along the Fu-Xia Expressway, Fujian Province, China. The performance and the feasibility of the DCM method were investigated in a trial embankment constructed prior to the actual construction. This paper presents the results of the instrumentation including total settlements, multipoint settlements, soil pressures on both the DCM columns and soil surface, pore-water pressures, and lateral movements obtained from in situ monitoring. The strength of the soil-cement from laboratory mix tests and from in situ quality control tests on DCM columns is presented in the paper. Study results indicate that DCM columns with varying lengths were a simple and effective method to reduce the total and differential settlements from a soft clay foundation at a bridge approach.

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• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Lin, K Q
  • Wong, I H
• Publication Date: 1999-4

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 309-320
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 125
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Abutments; Backfill soils; Bridge approaches; Columns; Differential settlement; Embankment foundations; Embankments; Expressways; Field tests; Highway bridges; Laboratory tests; Mixing; Pore water pressures; Quality control; Settlement (Structures); Soft clays; Soil cement
• Uncontrolled Terms: Deep cement mixing
• Geographic Terms: China
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics;

Filing Info

• Accession Number: 00763545
• Record Type: Publication
• Contract Numbers: MSS-9396264, CMS-9701785
• Files: TRIS
• Created Date: May 13 1999 12:00AM