DRIVEN ANCHORS TO STABILIZE COLLUVIAL SLOPES

The experimental research with soil anchors consisted of emplacing into and removing from the ground different sizes of rebar to determine pull-out loads and thereby anchorage strength. Driven soil nails to stabilize shallow seated slope failures appears feasible in terms of the drive process. Medium talus slopes, debris cones and slopes of colluvium are possible locations into which soil nails could be driven. A high concentration of boulders would prevent the drive process and, therefore, reduce the nail's feasibility. The experimental maximum pull-out force was between 4,000 and 6,000 lbs. This value is less than the typical commercial minimum. Therefore, the feasibility of using only soil nails without tip anchor modifications is low. However, if deep drives are achieved or if multiple nails are used, then greater anchor forces may be obtained. In that case, the feasibility of major short term applications would be better. The feasibility of long term use is low because of the inability to protect the nail from corrosion.

• Corporate Authors:

  Colorado Department of Highways

  Division of Transportation Planning, 4201 East Arkansas Ave.
  Denver, CO  United States  80222

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Szabelak, S A
  • Griffin, R G
• Publication Date: 1984-5

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 57 p.

Subject/Index Terms

• TRT Terms: Anchors (Structural connectors); Boulders; Colluvium; Corrosion; Feasibility analysis; Pull out test; Reinforcing bars; Slope stability; Talus
• Uncontrolled Terms: Rebars; Soil anchors
• Old TRIS Terms: Pullout
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00393972
• Record Type: Publication
• Report/Paper Numbers: FHWA-CDOH-04-9 Final Rpt.
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jul 31 1985 12:00AM