CONSTRUCTION AND PULL-OUT METHOD OF INTERNAL CONE TYPE POST-CONSTRUCTION ANCHOR AND CONSTRUCTION AND PULL-OUT TOOL

摘要

PROBLEM TO BE SOLVED: To be able to withdraw the inner cone type post construction anchor from the casting hole after used up.;SOLUTION: The placing hole H is made into a hole deeper than a length obtained by adding respective lengths of a body sleeve 2 of an internal cone type post-construction anchor and an expansion cone 3 built in a body sleeve, and an anchor is placed in the hole. When the anchor is used up, the expansion cone 3 is pushed out of the press-fitting end to the hole bottom of the placing hole H, and then the main sleeve 2 is pulled out of the placing hole H by applying a pull-out force. In addition, the expansion cone 3 left inside the placing hole is removed from the placing hole H.;SELECTED DRAWING: Figure 6;COPYRIGHT: (C)2018,JPO&INPIT