Anchor bolt for building construction

Abstract

The invention discloses an anchor bolt for building construction, comprising a nut, a tray, a hollow shank and a bit; the nut is arranged at the back of the tray, the tray is of circular disc structure and is uniform in thickness, the nut is provided with a hex groove, a ceramic conical post sleeve is fixedly connected in the hex groove, the upper end of the nut is also provided with a reinforcing nut, the surface of the hollow shank is provided with an external thread, the other end of the hollow shank is sleeved with the bit, two of four upper holes in a residue groove of the bit are modified into lower air inlets, low pressure is formed at entries of the upper water holes due to the decrease in cross-sectional area and increase in speed when water or air enters form a transition blind hole to the upper water holes, air in the lower air inlets is sucked in, the pressure for discharging the water or air from the upper water holes is increased, and a borehole can be cleared; construction efficiency is improved, product strength is enhanced, and the reliability of an anchor bolt supporting system is improved.

Description

Technical field [0001] The invention relates to the field of building construction, in particular to an anchor rod for building construction. Background technique [0002] With the development of economic construction, the surrounding rock needs to be safely supported during the construction process to prevent the surrounding rock from loosening and falling off. Anchor rods are usually used. Most of the current anchor rods are designed for a single purpose. Due to the limitation of elongation, ordinary anchor rods are easily broken or pulled out under the condition of large deformation of the surrounding rock, thus losing support. According to different topography and geotechnical characteristics, the choice of drill bit is also very important. During the process of grouting while drilling, when airflow, water or grout reaches the drill bit through the hollow part of the bolt, energy The loss of pressure and the weakening of the pressure seriously affect the drilling and chip re...

AI Technical Summary

Problems solved by technology

Bolts are usually used, and most of the current bolts are designed for a single purpose. Due to the limitation of elongation, ordinary bolts are easy to be broken or pulled out under the condition of large deformation of surrounding rock, thus losing support. According to different terrain and rock and soil characteristics, the selection of the drill bit is also very important. During the process of grouting while the anchor is drilling, when the airflow, water or slurry reaches the drill bit through the hollow part of the anchor, due to the energy The loss of the pressure weakens, which seriously affects the cleaning of the drilling and chip removal, and also affects the drilling speed of the drill bit.

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