Detailed explanation of anchor bolt

Update:07 Apr 2020
Summary:

Anchor bolts are tools embedded in the ground or founda […]

Anchor bolts are tools embedded in the ground or foundation to connect the ground or foundation to machinery and equipment. Q235 steel is generally used, which is round. Rebar (Q345) has high strength, and it is not easy to make a nut screw. For light round anchor bolts, the burial depth is generally 25 times its diameter, and then make a 90-degree hook about 120mm long. If the bolt diameter is very large (such as 45mm) and the depth is too deep, you can weld the square plate at the end of the bolt, that is, make a big head (but there are certain requirements). The burial depth and the hook are to ensure the friction between the bolt and the foundation, so that the bolt will not be pulled out and damaged. The anchor bolt has the function of fixing the device without strong vibration and impact.
Use
1. The fixed anchor bolt is also called short anchor bolt. It is poured with the foundation to fix the equipment without strong vibration and impact.
2. Movable anchor bolts, also known as long anchor bolts, are detachable anchor bolts used to fix heavy mechanical equipment with strong vibration and impact.
3. Expansion anchor anchor bolts are often used to fix simple equipment or auxiliary equipment at rest. The installation of expansion anchor bolts should meet the following requirements: the distance from the center of the bolt to the edge of the foundation is not less than 7 times the diameter of the expansion anchor bolts; the foundation strength of the installation anchor bolts should not be less than 10MPa; there should be no cracks in the drill holes The drill bit collides with the steel bars and buried pipes in the foundation; the diameter and depth of the drill hole should match the anchor bolts.
4. The bonding anchor bolt is a kind of anchor bolt commonly used in recent years, and its methods and requirements are the same as expansion anchor bolts. However, pay attention to blow off the sundries in the hole when bonding, and must not be damp.1