US 2014/0150372 A1 · STEEL PIPE STIFFENING BRACE MEMBER AND MANUFACTURING METHOD THEREOF

Abstract

A method of manufacturing a steel pipe stiffening brace member which has a shaft constituted of a main shaft member and an auxiliary shaft member and a stiffening steel pipe obtained by connecting side edges of four flat steels surrounding the shaft to each other. In the stiffening steel pipe, inside nook portions facing a side edge of the main shaft member are formed in stiffening members 25 and 26 having a V- or L-shaped cross section by fillet welding, and outside corner portions 25b and 26b are formed in the stiffening members 25 and 26 by partial penetration welding. Thereafter, side edges of the stiffening members 25 and 26 are abutted against each other, outside corner portions 27b and 28b are temporarily assembled by partial penetration welding, and outside corner portions 25b and 26b and outside corner portions 27b and 28b are subjected to partial penetration welding.

Claims18

Dependent claims

A steel pipe stiffening brace member comprising:

a main shaft member formed of flat steel;
and
a stiffening steel pipe which surrounds the main shaft member to restrain out-of-plane deformation of the main shaft member,
wherein side edges of four flat steels are butted to form an outside corner portion by partial penetration welding and form a steel pipe inside nook portion facing a side edge of the main shaft member by fillet welding, thereby the stiffening steel pipe is formed to have a rectangular cross-sectional shape.

1 more element

A method of manufacturing a steel pipe stiffening brace member, which comprises a main shaft member formed of flat steel and a stiffening steel pipe surrounding the main shaft member to restrain out-of-plane deformation of the main shaft member, comprising the steps of:

butting side edges of a pair of flat steels to permanently weld an inside nook portion by fillet welding and intermittently temporarily weld an outside corner portion in a longitudinal direction by partial penetration welding, and, thus, to form a stiffening member having a V-shaped cross section;
butting side edges of a pair of the stiffening members in such a state that the side edge of the main shaft member faces the permanently welded inside nook portion of the stiffening member to intermittently temporarily weld the outside corner portion in the longitudinal direction by partial penetration welding, and, thus, to temporarily assemble the stiffening steel pipe having a rectangular cross section;
and
permanently welding the temporarily welded outside corner portion of the stiffening steel pipe by partial penetration welding and permanently assembling the stiffening steel pipe.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/883,127Filed 5 Nov 2010

Published

5 Jun 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

E04C 5/012
Reinforcing elements of metal, e.g. with non-structural coatings: discrete reinforcing elements, e.g. fibres
E04H 9/0237
Bearing, supporting or connecting constructions specially adapted for such buildings: structural braces with damping devices
E04C 2003/026
Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces: braces
E04H 9/028
Withstanding earthquake or sinking of ground: earthquake withstanding shelters

Steel pipe stiffening brace member and manufacturing method thereof

Life of this patent

Steel pipe stiffening brace member and manufacturing method thereof

Life of this patent

Abstract

Claims18