Classification And Use Of Anchor Bolts

The tensile capacity of the anchor bolt is the tensile capacity of the round steel itself, and the size is equal to the cross-sectional area times the design value of the tensile strength (140MPa) is the allowable tensile bearing capacity at design. The anchor bolts are generally made of Q235 steel, which is round. I haven't seen the use of threads at present, but it's okay if it is required by force. 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.

Therefore, the tensile capacity of the anchor bolt is the tensile capacity of the round steel itself, and the size is equal to the cross-sectional area times the design value of the tensile strength (140MPa) is the allowable tensile bearing capacity at the time of design. Fixed anchor bolts, also called short anchor bolts, are poured together with the foundation to fix equipment without strong vibration and impact. Movable anchor bolts, also known as long anchor bolts, are detachable anchor bolts used to fix heavy mechanical equipment that has strong vibration and impact during work. Bonding anchor bolts is a kind of anchor bolts 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. Expansion anchor anchor bolts are often used to fix simple equipment or auxiliary equipment at rest.