Steel Frame Beam-Reinforcing Metal Fixture

Abstract

The present invention provides a steel frame beam-reinforcing metal fixture that is capable of recovering the full strength of a steel frame beam to a greater extent than a conventional steel frame beam-reinforcing metal fixture for an S structure. A steel frame beam-reinforcing metal fixture is substantially fitted to a web opening in an SRC beam. An outer peripheral portion of the steel frame beam-reinforcing metal fixture is fillet-welded to a steel frame beam web. The axial length of the steel frame beam-reinforcing metal fixture is between 0.5 and 200.0 times the thickness thereof in the radial direction. Furthermore, in the steel frame beam-reinforcing metal fixture, a length from one end side of the steel frame beam web to one end of the outer peripheral portion and a length from the other end side of the steel frame beam web to the other end of the outer peripheral portion are each at least 0.7 times the thickness of the steel frame beam web.

1 . A steel frame beam-reinforcing metal fixture which is substantially fitted to a web opening in a steel frame beam, characterized in that an outer peripheral portion is fillet-welded to said steel frame beam web, 
 an axial length is between 0.5 and 200.0 times a thickness in a radial direction, and    a length from one end side of said steel frame beam web to one end of said outer peripheral portion and a length from another end side of said steel frame beam web to another end of said outer peripheral portion are each at least 0.7 times a thickness of said steel frame beam web.    
   
   
       2 . A steel frame beam-reinforcing metal fixture which is substantially fitted to a web opening in a steel frame beam, characterized in that an outer peripheral portion is butt-welded to said steel frame beam web, 
 an axial length is between 0.5 and 200.0 times a thickness in a radial direction,    a length from one end side of said steel frame beam web to another end of said outer peripheral portion is greater than a thickness of said steel frame beam web, and    a joint surface of said outer peripheral portion, which is joined to said steel frame beam web, includes a curved surface (0≦radius of curvature≦five times said thickness of said steel frame beam web).    
   
   
       3 . A steel frame beam-reinforcing metal fixture which is substantially fitted to a web opening in a steel frame beam, characterized in that an outer peripheral portion is butt-welded to said steel frame beam web, 
 an axial length is between0.5 and200.0 times a thickness in a radial direction,    a length from one end side of said steel frame beam web to another end of said outer peripheral portion is greater than a thickness of said steel frame beam web, and    a joint surface of said outer peripheral portion, which is joined to said steel frame beam web, includes a first joint surface (0≦length≦said thickness of said steel frame beam web) which is substantially parallel to said radial direction, and a second joint surface which is inclined at an angle θ (15≦θ≦80) from said axial direction.    
   
   
       4 . A steel frame beam-reinforcing metal fixture which is substantially fitted to a web opening in a steel frame beam, characterized in that an axial length is between 0.5 and 200.0 times a thickness in a radial direction, 
 an indirect member fillet-welded to said steel frame beam web is fillet-welded to an outer peripheral portion, and    a length from one end side of said steel frame beam web to one end of said indirect member and a length from another end side of said steel frame beam web to another end of said indirect member are each at least 0.7 times a thickness of said steel frame beam web.    
   
   
       5 . A steel frame beam-reinforcing metal fixture which is substantially fitted to a web opening in a steel frame beam, characterized in that an axial length is between 0.5 and 200.0 times a thickness in a radial direction, 
 an indirect member butt-welded to said steel frame beam web is fillet-welded to an outer peripheral portion,    a length from one end side of said steel frame beam web to another end of said indirect member is greater than a thickness of said steel frame beam web, and    a joint surface of said indirect member, which is joined to said steel frame beam web, includes a curved surface (0≦radius of curvature≦five times said thickness of said steel frame beam web).    
   
   
       6 . A steel frame beam-reinforcing metal fixture which is substantially fitted to a web opening in a steel frame beam, characterized in that an axial length is between 0.5 and 200.0 times a thickness in a radial direction, 
 an indirect member butt-welded to said steel frame beam web is fillet-welded to an outer peripheral portion,    a length from one end side of said steel frame beam web to another end of said indirect member is greater than a thickness of said steel frame beam web, and    a joint surface of said indirect member, which is joined to said steel frame beam web, includes a first joint surface (0≦length≦said thickness of said steel frame beam web) which is substantially parallel to said radial direction, and a second joint surface which is inclined at an angle θ (15≦θ≦80) from said axial direction.    
   
   
       7 . A pair of steel frame beam-reinforcing metal fixtures comprising a first steel frame beam-reinforcing metal fixture and a second steel frame beam-reinforcing metal fixture, which is substantially fitted to a web opening in a steel frame beam, characterized in that an axial length of said first steel frame beam-reinforcing metal fixture and said second steel frame beam-reinforcing metal fixture is between 0.5 and 200.0 times a thickness in a radial direction, 
 an indirect member fillet-welded to said steel frame beam web is fillet-welded to one end of said first steel frame beam-reinforcing metal fixture and another end of said second steel frame beam-reinforcing metal fixture, and    a length from one end side of said steel frame beam web to one end of said indirect member and a length from another end side of said steel frame beam web to another end of said indirect member are each at least 0.7 times a thickness of said steel frame beam web.    
   
   
       8 . A pair of steel frame beam-reinforcing metal fixtures comprising a first steel frame beam-reinforcing metal fixture and a second steel frame beam-reinforcing metal fixture, which is substantially fitted to a web opening in a steel frame beam, characterized in that an axial length of said first steel frame beam-reinforcing metal fixture and said second steel frame beam-reinforcing metal fixture is between 0.5 and 200.0 times a thickness in a radial direction, 
 an indirect member butt-welded to said steel frame beam web is fillet-welded to one end of said first steel frame beam-reinforcing metal fixture and another end of said second steel frame beam-reinforcing metal fixture,    a length from one end side of said steel frame beam web to another end of said indirect member is greater than a thickness of said steel frame beam web, and    a joint surface of said indirect member, which is joined to said steel frame beam web, includes a curved surface (0≦radius of curvature≦five times said thickness of said steel frame beam web).    
   
   
       9 . A pair of steel frame beam-reinforcing metal fixtures comprising a first steel frame beam-reinforcing metal fixture and a second steel frame beam-reinforcing metal fixture, which is substantially fitted to a web opening in a steel frame beam, characterized in that an axial length of said first steel frame beam-reinforcing metal fixture and said second steel frame beam-reinforcing metal fixture is between 0.5 and 200.0 times a thickness in a radial direction, 
 an indirect member butt-welded to said steel frame beam web is fillet-welded to one end of said first steel frame beam-reinforcing metal fixture and another end of said second steel frame beam-reinforcing metal fixture,    a length from one end side of said steel frame beam web to another end of said indirect member is greater than a thickness of said steel frame beam web, and    a joint surface of said indirect member, which is joined to said steel frame beam web, includes a first joint surface (0≦length≦said thickness of said steel frame beam web) which is substantially parallel to said radial direction, and a second joint surface which is inclined at an angle θ (15≦θ≦80) from said axial direction.