Onton Bolt manufactures hollow anchor rods in all configurations from 1/2" to 3" diameter.
We offer self-drilling anchors and soil nails and micropiles which are same as DYWIDAG Drill Hollow bars. The thread profile is Standard ISO rope thread (R25 - R51). The main markets include India, Turkey, Australia and America.
Additionally, we can provide assemblies with sleeves or coupling nuts.
Onton Bolt also manufactures Trapezoidal Threaded (T30 - T76) Hollow Bars to be an alternative to Ischebeck Titan anchor bolts. They are mainly exported to Russia, Europe and America.
We can work to all specifications and can provide hot dip galvanized drill rods.
Onton Bolt can manufacture items specific to customer's requirements. We continually update and improve our products to meet the changing demands of customers and the industry.
The introduction below is about Soil Nailing work, explaining the usage of the nail, where it can be used, the nailing dig required and guidelines for installation of hollow bar anchors. In fact, soil nailing works are different in each other. It depends on the engineer designs. Thus the following introduction of soil nailing is for guidance only.
What is a Soil Nail?
To be brief, a Soil Nail is used in reinforcing the earth. The nail anchor gives friction, shear and tension strengths across all materials (steel rods, concrete, chemical cement, rock steel nets, etc.) to produce a whole structure. They are often applied in:
Radial bolting
Fore poling
Micro injection pile
Portal preparation
Rock face stabilization
Embankment retention / stabilization
Piling / Foundation
Diaphragm wall / Cofferdam strengthening
Underpinning
Tunnel wall bolting / pining
Soil Nailing Equipment:
Normal rotary percussive equipment is fine. For Hollow Bar Drill Anchor, it has the ability to work with small drill rigs without casing in narrow spaces. And a cement grout mixer and pump are sometimes required.
The drill rigs include but are not limited to:
Atlas Copco Mustang geotechnical drilling rigs
DYWIDAG Drill rigs
TEI Rockdrill
Morath
Grout mixer brands like Chemgrout, Colcrete Eurodrill are all good.
Install a Soil Nail
Onton soil nails are totally same as DSI drill rods or Titan hollow bars.
Depending on the soil condition, choosing specific tensile and ductility anchor nails to install.
The brief installation method:
Soil excavating by excavator
Drill the hole with drilling machine
Install and grout nails
Test
Place reinforcement and the shotcrete
Install soil nail plate, washers and nuts.
For self-drilling anchor hollow bars, the drilling and grouting are synchronous.
Tips for soil nailing work
The soil nail bars are the main factor of the nailing structure. The quality of nail anchors is very important. For the Soil Nail System, we summarized several elements:
High tensile and shear strength
High ductility
High bond strength
Ability to accommodate structural and nonstructural face attachments
Onton Bolt are producing high standards hollow bar anchors. We are looking forward to your inspection.