Transcript of SOIL NAILING
- 1. GUIDE BY PRESENTED BY Ms JAMSHEER P KRISHNAPRASAD C S5 CIVIL
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- 2. OVER VIEW INTRODUCTION APPLICATIONS HISTORY OF SOIL NAILING
TYPES OF SOIL NAILIG COMPONENTS OF A SOIL NAIL WALL MATERIALS USED
FOR SOIL NAILING MACHINERIES USED PROCEDURE OF SOIL NAILING
ADVANTAGES & DISADVANTAGES CONCLUSION 2
- 3. INTRODUCTION Used to reinforce and strengthen existing
ground. Installing closely spaced bars into a slope or excavation.
It is an effective and economical method. Act as a retaining wall
for excavation support. 3
- 4. SOIL NAILING 4
- 5. APPLICATIONS Landslide Remediation Railway embankments
Roadway widening under existing bridges Stabilizing of existing
retaining walls Highway embankments and cuttings 5
- 6. APPLICATIONS 6Tunnel portals in steep slopes Stabilization
of Highway cut slope Stabilization of Railroad Stabilization of
steep slopes
- 7. HISTORY OF SOIL NAILING New Austrian Tunneling Method in
1960. underground tunnel in Europe in 1970. modern form was in
France in 1972. The United States first used soil nailing in 1976.
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- 8. TYPES OF NAILS USED Drilled and Grouted Soil Nail Driven
Soil Nails Self Drilling Soil Nails 8
- 9. COMPONENTS OF A SOIL NAIL WALL 9
- 10. MATERIALS USED FOR SOIL NAILING Steel Reinforcements Grout
Mix Shotcreting / Gunite 10
- 11. MATERIALS USED FOR SOIL NAILING 11Grout Mix Reinforcements
used in Soil Nailing Shotcreting
- 12. MACHINERIES USED Drilling Equipments Grout Mixing
Equipments Shotcreting/ Guniting Equipments Compressor 12
- 13. Typical drilling equipment Grout Mixing Instrument
Shotcreting is done using a pipe MACHINERIES USED 13compressor
- 14. PROCEDURE OF SOIL NAILING Excavate small cut Drill hole for
nail Install & grout nail Place drainage strips, initial
shotcrete layer & install bearing plates Repeat process to
final grade Place final facing on permanent walls 14
- 15. CONSTRUCTION SEQUENCES 15 DRILLING OF HOLESINITIAL
EXCAVATION
- 16. CONSTRUCTION SEQUENCES (CONT..) 16 NAIL INSTALLATION
- 17. CONSTRUCTION SEQUENCES (CONT..) PLACE REINFORCEMENT AND
DRAINAGE SHOTCRETING AND INSTALLING BEARING PLATES 17
- 18. CONSTRUCTION SEQUENCES (CONT..) PERMANENT FACINGREPEAT
STEPS TO FINAL SUBGRADE 18
- 19. ADVANTAGES Shotcrete facing is less costly Grouting only
once is required, saving time and labor. The technique is flexible,
easily modified. Less impact on nearby properties Can be used for
strengthening of either natural slope, natural or man- made cut
slopes Allow excellent working space in front of the excavation
face, Rapid and uses less construction materials Economical 19
- 20. CONCLUSION Soil nailing is a potential solution of
landslide problems. Economical and also applicable in seismic
zones. It can be used in wide soil types. 20
- 21. REFERENCES 1.
http://www.deepexcavation.com/en/soil-nail-wall 2.
http://www.moretrench.com/b_literature_article.php 3.
http://en.wikipedia.org/wiki/Soil_nailing 4. Manual for Design and
Construction Monitoring of Soil Nail walls, US Department of
Transportation, Federal Highway Administration. 5. Guide to Soil
Nail Design and Construction, Geotechnical Engg Office, Civil
Engineering and Development Department, The Government of the Hong
Kong. 21
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