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SOIL NAILING

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COMPARATIVE STUDY OF SOIL NAILING AND REINFORCED SOIL Soil properties Method of installing reinforcing elements Construction process Facing Inclination of ... – PowerPoint PPT presentation

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Title: SOIL NAILING


1
SOIL NAILING
Dr. A.K.Chaudhary Assistant
Professor Department of Civil Engineering, NIT,
Jamshedpur

2
INTRODUCTION
  • Soil nailing is a technique used to reinforce and
    strengthen existing ground
  • Soil nailing consists of installing closely
    spaced bars into a slope or excavation as
    construction proceeds from top down
  • The grouted nails increases shear strength of
    overall soil mass.

3
TYPES OF SOIL NAIL
  • Screw anchor soil nail
  • Grouted soil nail

4
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

5
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6
IDEAL CONDITIONS FOR SOIL NAILING
  • Height of excavation
  • Excavation Face Inclination
  • Type of soil
  • Nail length
  • Nail inclination
  • Nail diameter
  • Grouted hole diameter

7
APPLICATIONS
  • Landslide Remediation
  • Railway embankments
  • Roadway widening under existing bridges
  • Stabilizing of existing retaining walls
  • Highway embankments and cuttings

8
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9
ADVANTAGES
  • Cost
  • Time
  • Applicable in almost all type of soils
  • Construction equipments
  • Performance
  • Construction flexibility
  • Environmental and aesthetic considerations

10
LIMITATIONS
  • Temporary stand-up time
  • Excavation below the water level
  • Excavation in soft clay.

11
COMPARATIVE STUDY OF SOIL NAILING AND REINFORCED
SOIL
  • Soil properties
  • Method of installing reinforcing elements
  • Construction process
  • Facing
  • Inclination of reinforcing elements

12
DESIGN STEPS
  • Feasibility Assessment
  • Internal stability
  • External stability

13
TYPICAL CROSS SECTION OF SOIL NAILED WALL
14
CONCLUSION
  • Soil nailing is a potential solution of landslide
    problems as it is economical and also applicable
    in seismic zones.
  • It can solve the problem of residential area up
    to a great extent.
  • It can be used in wide soil types.

15
  • THANK YOU !!!!!!
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