Title:
COUPLER OF PC STEEL INTRODUCING PRESTRESS IN PRETENSION METHOD
Document Type and Number:
Japanese Patent JP2020176374
Kind Code:
A
Abstract:
To provide a pretension method causing no lowering of productivity and yield deterioration of an excessive length part, when introducing prestress into a concrete member.SOLUTION: A coupler 10 connecting PC steel materials with each other includes a first connection part 100 for connecting a first PC steel 30 being an excessive length part, a second connection part 200 for connecting a second PC steel 20 being a manufacturing section, and an adjusting part 300 with one end along the axial direction of the PC steel connected to the first connection part 100, the other end along the axial direction of the PC steel connected to the second connection part 200, for adjusting the length along the axial direction from the first connection part 100 to the second connection part 200. The adjusting part 300 includes a hollow PC steel bar 340 and a solid PC steel bar 330 changing the axial length by changing the insertion length into the hollow PC steel bar 340.SELECTED DRAWING: Figure 2
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Inventors:
NODA KAZUNARI
MATSUDAIRA TAKUTO
HIRAO MINAMI
MATSUSHITA AKIRA
ONISHI MUTSUHIKO
MATSUDAIRA TAKUTO
HIRAO MINAMI
MATSUSHITA AKIRA
ONISHI MUTSUHIKO
Application Number:
JP2019076971A
Publication Date:
October 29, 2020
Filing Date:
April 15, 2019
Export Citation:
Assignee:
SHINKO WIRE CO LTD
International Classes:
E04C5/18; B28B23/04; E01D1/00; E04B1/22; E04C5/08; E04G21/12
Attorney, Agent or Firm:
Mikio Yasuda