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Anchor Bolts Installation Mode
Jun 01, 2017

Anchor Bolts The rear-reamed anchor Bolt is a general designation of mechanical anchors which can be used in the load-bearing structure of the seismic fortification area, and the rear-expanded bottom anchor Bolt includes a self expanding bottom anchor bolt, Anchor Bolts a mould expanding bottom anchor bolt and a glue-sticking-mode expanded bottom anchor bolt (Fig.). The classification of the three anchors depends mainly on how they are installed.

First, Anchor Bolts a straight hole is drilled into the anchor bolt, and then the anchor Bolt is placed into the hole by combining the mounting lever on the hammer and the card groove on the expansion sleeve of the bolt to rotate the hammer, under constant hammering rotation, the bottom enlarged bottom cutter head (must be inlaid with diamond or tungsten carbide blade) and coagulation are cut by the column cone under the anchor bolt, Anchor Bolts and a cone step is formed to form a locking effect. The basis for judging this kind of anchor is that the anchor Bolt has no inlaid diamond or tungsten carbide blade because the hardness of the concrete is larger than that of carbon steel. This kind of anchor bolt with the specification has the larger shearing force value (has the big sleeve), the same specification hole diameter is big, the price is expensive, has the mechanical anchor bolt the common disease--Isong, the corrosion resistance performance is bad, does not recommend for the dynamic load or the corrosive environment area.

Secondly, the die-expanding bottom anchor bolt installation needs to drill a straight hole, (note that the following is the difference with the self-expanding bottom anchor) and then the special-purpose die-expanding tool in a straight-line way (from the hole to the vertical base pressure) to expand the hole, after reaming, the anchor bolt is inserted into the expanding hole, and the torque causes the bottom expansion of the anchor bolt to swell open with the step of the bottom of the reaming hole to form the locking effect. Anchor Bolts The basis of this anchor is to see whether the special Reaming tool is used to enlarge the hole in the way of pressure straight forward. This kind of anchor bolt price is low, mainly look at the cost of reaming tool, have the common problem of mechanical anchor bolt--Isong, poor corrosion resistance, not recommended for dynamic load or corrosive environment area.

Finally is the glue mold expands the bottom anchor Bolt, looks the name also to know that it is first a mold expands the bottom anchor bolt, and on the basis of the expansion of the base anchor Bolt and adhesive also became a glue-mold expansion of the bottom bolt, only after reaming to the hole into a part of the adhesive, and then complete the installation of the die-expanding anchor bolt. Anchor Bolts The basis of this anchor bolt is the same as that of the mould expanding bottom anchor bolt, but it is more important to see the quality of the adhesive. The price of this kind of anchor bolt is mainly see the cost of reaming tool, Anchor Bolts eliminate the common problem of mechanical anchor bolt--Isong and corrosion. To meet the design capacity of the premise of almost any area can be used.

The anchor Bolt is the anchoring assembly product which will be connected to the base material, which is divided into mechanical anchor bolt and chemical anchor bolt, and the source is J.J.145-2013 "concrete structure post Anchorage Technical Specification".


The base material of anchor bolts is divided into reinforced concrete, prestressed concrete or element concrete; not as anchoring base material includes: freeze-thaw damaged concrete, Anchor Bolts corroded damaged concrete, serious crack damage concrete, and not compacted concrete.


The chemical anchor Bolt is a new type of metal fastening material, which is rented by chemical agents and metal rods. The chemical anchor Bolt is a new type of anchor Bolt after the expansion bolt, and the screw cementation is fixed in the concrete base material drilling through the special chemical binder, in order to realize the fixed anchoring compound. Chemical anchors are divided into common chemical anchors and special inverted-cone chemical anchors.





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