Anchor pin for placing shotcrete and fixing textile grid and method of constructing textile grid reinforced shotcrete using the same

A method of constructing textile grid reinforced shotcrete using an anchor pin, comprising:

• (a) driving and fixing an anchor pin in and to a surface of a concrete structure to be repaired and reinforced at a predetermined driving thickness;
• (b) placing primary shotcrete up to a lower separation node of a grid fixing part (130) of the anchor pin at a placing thickness of primary shotcrete;
• (c) insertion-mounting a textile grid reinforcement in a groove formed between nodes of a grid fixing part of the anchor pin;
• (d) placing secondary shotcrete up to an uppermost end of the anchor pin at a placing thickness of the secondary shotcrete;
• and
• (e) finishing an exposed surface and completing repair and reinforcement of the concrete structure,
• wherein the anchor pin comprises:
• a driving part serving as a front end part and driven in the concrete structure to be repaired and reinforced at the predetermined driving thickness;
• a middle body part that extends from an upper portion of the driving part in a cylindrical form so that the placing thickness of the primary shotcrete is checked;
• an upper body part that extends from an upper portion of the middle body part in a cylindrical form so that the placing thickness of the secondary shotcrete is checked;
• a driving depth limiting lateral node formed between the driving part and the middle body part to protrude in a ring shape and formed in a lateral direction to limit a driving depth of the driving part;
• and
• a grid fixing part comprising an upper separation node and a lower separation node that are formed between the middle body part and the upper body part to protrude in a ring shape, wherein a groove is formed between the upper separation node and the lower separation node in a lateral direction so that a textile grid reinforcement is insertion-mounted in the groove.