Soil Nailing, Soil Nailing Technique, Types of Soil Nailing
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| Soil Nailing |
SOIL NAILING AND SOIL NAILING TECHNIQUE
INTRODUCTION OF SOIL NAILING➱
Soil
Nailing Is a process To Make The soil or Soil fill More Able to resist
loads (direct loads, Shear Loads Radial loads etc) Or to Make it more
stable,Soil nailing Reinforces soil hence the soil becomes more
stable,
Nailing Is a process To Make The soil or Soil fill More Able to resist
loads (direct loads, Shear Loads Radial loads etc) Or to Make it more
stable,Soil nailing Reinforces soil hence the soil becomes more
stable,
Generally
Soil Nailing Technique is used in steep sloppy areas, high fill areas, High
embankment, retaining walls And other Structures where There is more chance of
failure of soil,
Soil Nailing Technique is used in steep sloppy areas, high fill areas, High
embankment, retaining walls And other Structures where There is more chance of
failure of soil,
Here in
In this post we are going to describe about soil nailing process, soil nailing
technique, types of soil nailing and its applications,
In this post we are going to describe about soil nailing process, soil nailing
technique, types of soil nailing and its applications,
How does a soil nail wall work?
SOIL NAILING PROCESS- TECHNIQUE➱
What is soil nailing technique?
In the
Process or Technique of Soil Nailing The Soil Is Reinforced With An Element
Such As Self Drilling Anchor bars or Reinforcing Bars Which Are
called Nails See in the fig.
Process or Technique of Soil Nailing The Soil Is Reinforced With An Element
Such As Self Drilling Anchor bars or Reinforcing Bars Which Are
called Nails See in the fig.
These Self
Drilling Anchor bars or Reinforcing Bars are installed into Self Drilled holes
or pre-drilled holes and after it grouted with contentious mix,
Drilling Anchor bars or Reinforcing Bars are installed into Self Drilled holes
or pre-drilled holes and after it grouted with contentious mix,
These Self
Drilling Anchors or Reinforcing bars are installed at an angle of 5 to 20
degrees with vertical generally or any other angle which is specified,
Drilling Anchors or Reinforcing bars are installed at an angle of 5 to 20
degrees with vertical generally or any other angle which is specified,
As The
Drilling Work Proceeds,The concrete, Shotcrete or any other Drilling materials
are used on The drilled face to grout the nails,
Drilling Work Proceeds,The concrete, Shotcrete or any other Drilling materials
are used on The drilled face to grout the nails,
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| Soil nailing Details |
MACHINERY REQUIRED FOR SOIL NAILING➱
➤Grouting and mixing Equipments,
➮ High-speed shear Colloidal mixer, Grout pump,
➤Drilling Equipment,
➮Rotary Air Flushed and water Flushed drilling machine, tricone bit , Rigid Drill Rods,
➤Compressor,
➤Shotcreting Or Guniting Equipment,
MATERIALS REQUIRED FOR SOIL NAILING➱
➤Reinforcing Steel Rods Or Nails,
➤Self drilling anchor(SDA) bars,
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| Self Drilling Anchor |
➤Shotcrete, Concrete or Any other grouting material,
➤Grout mix,
ORIGIN
OF SOIL NAILING TECHNIQUE➱
➤The
soil nailing technique was first time implemented in France near Versailles for
a Railroad widening Project in 1972,
soil nailing technique was first time implemented in France near Versailles for
a Railroad widening Project in 1972,
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| Soil nailing |
➤The soil nailing Technique in United States was used first time for the support of a
13.7-metre deep foundation excavation in dense silty sand in 1976,
13.7-metre deep foundation excavation in dense silty sand in 1976,
TYPES OF SOIL NAILING -METHODS➱
How do you install soil nails?
Following
Are the Various Types of Soil Nailing Methods or process,
Are the Various Types of Soil Nailing Methods or process,
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| Inserting nails and fixing plates soil nailing |
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| Using Shotcrete and grouting |
1-Grouted
Soil Nailing or Drilled Soil Nailing
➤In
This type of Soil Nailing and drilling is done on the Wall or the Slope Face
Where nailing is Required,
This type of Soil Nailing and drilling is done on the Wall or the Slope Face
Where nailing is Required,
➤Then
The nails are inserted in the Drilled Holes,
The nails are inserted in the Drilled Holes,
➤After
it the Drilled hole is Filled with Cement Slurry, Shotcrete or any other
Grouting Material,
it the Drilled hole is Filled with Cement Slurry, Shotcrete or any other
Grouting Material,
➤The
The diameter Of Nails Are Taken From 100 mm to 200 mm And the Spacing between each
nails Are Taken 1.5 meters,
The diameter Of Nails Are Taken From 100 mm to 200 mm And the Spacing between each
nails Are Taken 1.5 meters,
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| Grouted soil nailing |
2- Driven
Soil Nailing
➤This
Type Of Soil Nailing Is used for temporary Stabilization of Slopes,
Type Of Soil Nailing Is used for temporary Stabilization of Slopes,
➤This
Soil Nailing Is Faster Than Other nailing methods,
Soil Nailing Is Faster Than Other nailing methods,
➤In
In this Soil Nailing Method, The Reinforcement bars are inserted in the face of
slope While the Excavation Activity is Going On,
In this Soil Nailing Method, The Reinforcement bars are inserted in the face of
slope While the Excavation Activity is Going On,
➤The
The diameter of Reinforcing bars is normally 19 mm to 25 mm, Which is Smaller in size
as Compared to Others,
The diameter of Reinforcing bars is normally 19 mm to 25 mm, Which is Smaller in size
as Compared to Others,
➤The
Spacing between Nails is Provided 1 meter to 1.2 meter,
Spacing between Nails is Provided 1 meter to 1.2 meter,
➤In The
Driven Soil Nailing There is no Protection of Nails from Corrosion And Rusting,
Driven Soil Nailing There is no Protection of Nails from Corrosion And Rusting,
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| Driven soil nailing |
3- Self
Drilling Soil Nailing
➤Self
Drilling Anchors (SDA) Bars or Hollow bars are used in self-drilling soil
nailing,
Drilling Anchors (SDA) Bars or Hollow bars are used in self-drilling soil
nailing,
➤Bars
are inserted and Drilled into the surface, and at the same time Grout is
injected While the Drilling Process is going on,
are inserted and Drilled into the surface, and at the same time Grout is
injected While the Drilling Process is going on,
➤In
Self Drilling Soil nailing The Self Drilling Anchors Or hollow Reinforcing Bars
Are More Protected From Corrosion and rusting as compared to Driven soil
nailing method,
Self Drilling Soil nailing The Self Drilling Anchors Or hollow Reinforcing Bars
Are More Protected From Corrosion and rusting as compared to Driven soil
nailing method,
➤This
is Faster Than Driven Soil Nailing,
is Faster Than Driven Soil Nailing,
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| Self drilling soil nailing |
4-Jet
Grouted Soil Nailing
➤In
This Soil nailing method,The water jets Are used for eroding The Soil To make
holes in the surface,
This Soil nailing method,The water jets Are used for eroding The Soil To make
holes in the surface,
➤After
it the Reinforcing Steel Bars Are inserted and fitted in the ready holes and
grouting is done with shotcrete, Concrete or Other Grouting materials,
it the Reinforcing Steel Bars Are inserted and fitted in the ready holes and
grouting is done with shotcrete, Concrete or Other Grouting materials,
➤In Jet
Grouted Soil Nailing The Reinforcing Steel bars are protected From corrosion
and rusting,
Grouted Soil Nailing The Reinforcing Steel bars are protected From corrosion
and rusting,
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| Jet grouted soil nailing |
5-
Launched Soil Nailing
➤In
launched soil nailing, The Reinforcing steel bars are inserted Forcefully into
surface in a single shot with the help of of highly compressed air mechanism,
launched soil nailing, The Reinforcing steel bars are inserted Forcefully into
surface in a single shot with the help of of highly compressed air mechanism,
➤In
This Method The Installation process of nails is fast, But it is difficult to
control over length of bars penetrating the surface,
This Method The Installation process of nails is fast, But it is difficult to
control over length of bars penetrating the surface,
➤The
length of Reinforcing nails is around 6 meter and the diameter is 38 mm,
length of Reinforcing nails is around 6 meter and the diameter is 38 mm,
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| Launched soil nailing |
APPLICATIONS
OF SOIL NAILING➱
➤Soil
nailing is used for the stabilization of Existing Retaining walls,
nailing is used for the stabilization of Existing Retaining walls,
➤In
Excavating retaining structures in urban areas for high-rise buildings and
underground utilities,
Excavating retaining structures in urban areas for high-rise buildings and
underground utilities,
➤In
Eradicating and Redemption of Landslide,
Eradicating and Redemption of Landslide,
➤Stabilizing
the Roadways, Highways, and expressways embankments and steep slopes,
the Roadways, Highways, and expressways embankments and steep slopes,
➤Retrofitting
and construction of abutments of bridges,
and construction of abutments of bridges,
➤Steep
cutting stabilization,
cutting stabilization,
➤Stabilization
of over steep existing embankments,
of over steep existing embankments,
➤Providing
long-term stability to existing concrete structures without demolition and
rebuilding costs,
long-term stability to existing concrete structures without demolition and
rebuilding costs,
➤Temporary
excavation shoring,
excavation shoring,
➤Stabilization
of Railroad cut slopes,
of Railroad cut slopes,
➤For
Strengthening The Tunnel portals in steep and unstable slopes,
Strengthening The Tunnel portals in steep and unstable slopes,
➤For
Stabilization of Slopes in hilly areas where roads are constructed, where
movement of vehicles, people or animals is more,
Stabilization of Slopes in hilly areas where roads are constructed, where
movement of vehicles, people or animals is more,
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| Soil nailing |
ASSUMPTIONS
AND CONSIDERATIONS IN INSTALLATION OF SOIL NAILS➱
➤Soil
Nailing Should be started within some limit of time after excavation, any delay
may lead to the collapse of soil slope,
Nailing Should be started within some limit of time after excavation, any delay
may lead to the collapse of soil slope,
➤Reinforcing
bars or soil nails must penetrate beyond the slip plane into the passive zone
for 4 meters to 5 meters,
bars or soil nails must penetrate beyond the slip plane into the passive zone
for 4 meters to 5 meters,
➤Metallic
reinforcement soil nails get corroded,
reinforcement soil nails get corroded,
➤The
The area occupied by Reinforcing soil nails is sterilized and the site posed
constraints to the development in future,
The area occupied by Reinforcing soil nails is sterilized and the site posed
constraints to the development in future,
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| Soil nailing Anchor plates |
What is a soil nail wall?
ADVANTAGES
OF SOIL NAILING➱
What are the advantages of soil nailing?
➤With
the help of soil nailing the erosion of soil of high fill, high embankment or
steep slope can be avoided,
the help of soil nailing the erosion of soil of high fill, high embankment or
steep slope can be avoided,
➤After
soil nailing The age, durability and stability increase,
soil nailing The age, durability and stability increase,
➤Soil
nailing is suitable for confined locations with difficult access As the
The equipment required for soil nailing is small and mobile to use,
nailing is suitable for confined locations with difficult access As the
The equipment required for soil nailing is small and mobile to use,
➤The
failure of the soil nailing system is ductile that’s why it provides
warning signs before failure,
failure of the soil nailing system is ductile that’s why it provides
warning signs before failure,
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