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Patent Searching and Data


Title:
PRESTRESSED CONCRETE POLE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2009174216
Kind Code:
A
Abstract:

To provide a prestressed concrete pole which can prevent an axially placed steel member from sliding relative to concrete when introducing prestress.

The prestressed concrete pole is provided with at least a concrete pole body 2 and the axially placed steel member 11 arranged along the axial direction. At least one of the end parts (1A, 1B) of the concrete pole body 2 is provided with a helical member 31 which is buried in the concrete pole body 2 in such a state that it is engaged with and provided on the outer periphery of the axially placed steel member 11. When prestress is introduced to the concrete pole body 2 by applying and relaxing tension in the tensile direction to the axially placed steel member 11, the relative sliding between the axially placed steel member 11 and the concrete pole body 2 can be controlled by the helical member 31.


Inventors:
Hisamoto, Akira
Application Number:
JP2008000015065
Publication Date:
August 06, 2009
Filing Date:
January 25, 2008
Export Citation:
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Assignee:
DAINICHI CONCRETE KOGYO KK
International Classes:
E04H12/16; E04H12/12