PARTIAL UNBONDED METHOD AND PC STEEL MEMBER USING ITS SYSTEM

PROBLEM TO BE SOLVED: To improve the plastic deforming performance at the critical condition of a PC steel material in a PC member. SOLUTION: When a sheath pipe is in advance arranged in a position where PC steel members are arranged between a specified section of members such as beams, columns, etc...

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Bibliographic Details
Main Author ASAKAWA KOICHI
Format Patent
LanguageEnglish
Published 03.04.2001
Edition7
Subjects
BUILDING
BUILDING MATERIALS
CEILINGS
FIXED CONSTRUCTIONS
FLOORS
GENERAL BUILDING CONSTRUCTIONS
INSULATION OR OTHER PROTECTION OF BUILDINGS
PERFORMING OPERATIONS
ROOFS
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
STRUCTURAL ELEMENTS
TRANSPORTING
WALLS, e.g. PARTITIONS
WORKING CEMENT, CLAY, OR STONE
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Summary:PROBLEM TO BE SOLVED: To improve the plastic deforming performance at the critical condition of a PC steel material in a PC member. SOLUTION: When a sheath pipe is in advance arranged in a position where PC steel members are arranged between a specified section of members such as beams, columns, etc., an unbonded sheath 4 is arranged in a specified length at a part of a sheath having a large strain in a relatively large sectional force in the action of an earthquake load and a bond sheath 5 is arranged in a position where the unbonded sheath 4 is not arranged and then, concrete is placed so as to embed the seaths and PC steel wires inserted in the unbonded sheath 4 and the bond sheath 5 is tensed and anchored after the concrete is cured to display a specified strength. Subsequently grout mortar is filled into the bond sheath 5.
Bibliography:Application Number: JP19990271893