Title:
POST-EXECUTION ANCHOR
Document Type and Number:
Japanese Patent JP3220702
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve tenacity by installing an expansion member to be pressed into a diameter expansion section and a sleeve pushing the expansion member around a section in the vicinity of the lower section of an anchor body in a post-execution anchor inserted into an anchor hole, to which the diameter expansion section is formed.
SOLUTION: An anchor hole 2 is formed to an existing concrete structure 1 by a pit for a lower hole, etc., and an undercutter is inserted into the anchor hole 2 and a diameter expanding section 2a is formed near a hole bottom. An anchor body 3 formed of a screw-knotted reinforcement is inserted into the anchor hole 2, and a sleeve 7 is drive by a driving bar and an expansion member 6 is pushed downwards. A plurality of expansion pieces 6a of the expansion member 6 are moved onto the tapered section 4a of a bolt 4, each expansion piece 6a is expanded along the tapered section 4a and pressed into the diameter expanding section 2a, and the anchor 3 is fixed into the anchor hole 2. Accordingly, the slipping-out of cracks due to an earthquake, etc., is prevented, and reinforcing bars having high tenacity can be fixed.
Inventors:
Hiroyuki Yamanaka
Tadashi Yoshikawa
Akiyama Akiyama
Takehiro Nichishiki
Takahiro Arai
Masaaki Miyanaga
Tadashi Yoshikawa
Akiyama Akiyama
Takehiro Nichishiki
Takahiro Arai
Masaaki Miyanaga
Application Number:
JP28520196A
Publication Date:
October 22, 2001
Filing Date:
October 28, 1996
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
Miyanaga Co., Ltd.
Miyanaga Co., Ltd.
International Classes:
E04B1/41; (IPC1-7): E04B1/41
Domestic Patent References:
| JP3107605A | ||||
| JP2176206A | ||||
| JP874328A | ||||
| JP7119210A | ||||
| JP7102560A | ||||
| JP2146306A | ||||
| JP2269239A | ||||
| JP6374510U | ||||
| JP728211U | ||||
| JP3123108U | ||||
| JP519444U |
Attorney, Agent or Firm:
Tsukasa Kubo