ESTIMATING BASAL-HEAVE STABILITY FOR BRACED EXCAVATIONS IN SOFT CLAY. TECHNICAL NOTE

In this technical note, the author reviews and expands the work of Terzaghi (1943) and Bjerrum and Eide (1956) regarding basal-heave stability in braced excavation systems. The author uses the finite element method to evaluate basal-heave factor of safety for braced excavation systems in soft clay, taking into account the stiffness of the wall and the depth of the embedment. The author concludes that the important factors affecting basal stability are the thickness of the clay layer beneath the bottom of the excavation, the depth of the wall below the bottom of the excavation, the width/height ratio of the excavation, and the stiffness of the wall. Further studies are necessary to expand the range of soil and wall conditions considered.

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• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Goh, ATC
• Publication Date: 1994-8

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 1430-36
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 120
  • Issue Number: 8
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Anchoring; Bracing; Depth; Estimating; Excavations; Finite element method; Safety factors; Soft clays; Soil stabilization; Stability analysis; Stiffness
• Uncontrolled Terms: Embedment; Heaving
• Old TRIS Terms: Heave; Stabilization systems; Stiffness methods (Structural)
• Subject Areas: Geotechnology; Highways; Safety and Human Factors; I42: Soil Mechanics;

Filing Info

• Accession Number: 00665996
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 10 1994 12:00AM