Product Details:
Type Of Construction | Commercial |
Build Up Area / Size | 2000 sq ft. |
Location | Bhopal And Mumbai |
Mode of service | Offline |
Rock Anchor Services Are Basically Devices Used To Transmit The Forces To The Soil By Means Of Prestressed Tendon To Anchor The Structure To The Ground Or To Retain The Slopes From Collapsing.
The Types Of Ground Anchors:
A) Based On The Anchorage Zone
- Rock Anchors- Fixed Length Is Anchored In The Hard Rock.
- Soil Anchors- Fixed Length Is Anchored In The Soil
B) Based On Nature Of Structure
- Permanent Anchors - Permanent Ground Anchors Have To Guarantee Their Function During The Lifetime Of The Structures To Be Anchored
- Temporary Anchors - Prestressed Anchors, Which Have To Fulfill Their Function Only For A Limited Time
C) Based On How It Is Installed
- Vertical Anchors - These Anchors Are Provided Vertically Into The Ground
- Inclined Anchors - These Anchors Are Provided At An Angle Into The Ground
D) Based On Application:
- Test Anchors - Test Anchors Are Specially Design Anchors Subject To Extensive Tests In Order To Obtain, Either Comprehensive Information On Anchor Capacity And Geotechnical Conditions Or To Prove The Quality And Adequacy Of Design, Material, And Construction.
- Control Anchors - Control Anchors Are Anchors In Or Beside The Structure Used For Long-term Observation. They Are Often Equipped With Devices, Which Monitor The Variation Of Forces And Displacement.
Application Of Ground Anchors :
Rock Anchors Mainly Found Applications In The Following Structures.
- Inclined Anchors In The Retaining Walls To Retain The Earth
- Vertical Anchors In The Raft Foundation, To Resist The Uplift Pressure Due To High Water Table.
- In The Diaphragm Walls.
- To Retain Embankment Slopes Of The Roads, Canals Etc.
- Rock Anchors Are Used In Pile Load Testing.
The Basic Function Of Ground Anchors Consists Of Transmitting Tensile Forces Into The Ground By Means Of:-
- The Anchor Head, Holding The Tendon Under Tension And Transmitting Forces Into The Structure.
- The Fixed Anchor Length, The Part Of The Tendon Over Which The Force Is Transmitted Into The Ground Through The Bond Between The Prestressing Steel, The Grout, And The Soil. It Is Also Called The Bonded Length.
- The Free Anchor Length, The Part Over Which The Tendon Can Elastically Elongate And Is Also Called The Unbonded Length. To Graduate A Free Elongation This Length Should Not Be Less Than 5 M.
Methodology For Ground Anchors :
Rock Anchoring Work Is Carried Out In The Following Steps-
- Drilling
- Water Test ( Permeability Test)
- Virgin Grouting
- Re-drilling
- Homing
- Primary Grouting ( Fixed Length Grouting)
- Stressing
- Secondary Grouting
References:
List Of Important Rock-anchoring Work Carried Out In Recent Past By The Experienced Staff Of Vsil-
- Inclined Rock Anchors At Bhumiraj Construction Site, Sanpada, Navi Mumbai. Anchor Capacity - 115 T & 165 T
- Angle Of Inclination - 45º & 60º To The Horizontal
- Inclined Rock Anchors For Valecha Engineers For India Bulls Ltd. Site, Lower Parel, Navi Mumbai.
- Anchor Capacity - 60 T
- Angle Of Inclination - 45º
Additional Information: