Joint structure of building using thin and lightweight shaped-steel

Abstract

The present invention provides a joint structure for a building using thin and lightweight shaped-steel, and, in particular, provides a joint structure for fastening and fixing frame members made of thin and lightweight shaped-steel to steel sills and a bolt joint truss structure for forming a main structure of a roof, sufficiently durable against a large earthquake or a strong wind such as a typhoon. A joint structure of a building using thin and lightweight shaped-steel is provided wherein, in a joint portion for fastening a steel frame member for forming a wall to a steel floor sill, a steel reinforcing member having a cross-sectional area in a range from 70 to 100% of a cross-sectional area of the steel frame member is inserted into the joint portion and fixed thereto. Also, a joint structure of a building using thin and lightweight shaped-steel is provided, wherein upper chord members, lower chord members and lattice members of light and lightweight shaped-steel are combined to form a truss structure, wherein a joint portion of the upper chord member, lower chord member and lattice member has at least one joint through-hole, and wherein the joint portions of the respective members are connected together to form a joint and a fastener is inserted into the joint through-hole to fasten and fix the respective members to each other.

1 . A joint structure of a building using thin and lightweight shaped-steel, characterized in that, in a joint portion for fastening a steel frame member for forming a wall to a steel floor sill, a steel reinforcing member having a cross-sectional area in a range from 70 to 100% of a cross-sectional area of the steel frame member is inserted into the joint portion and fixed thereto.  
   
   
       2 - 7 . (canceled)  
   
   
       8 . A joint structure for a building using thin and light-weight shaped-steel comprising: 
 a joint structure for fastening a steel frame member to a first and second steel floor sill comprises a joint portion fastening said first steel floor sill to said second steel floor sill, and    further comprises a joint portion fastening a steel frame member for forming a wall to a steel or concrete base by a bolt, and    a steel joint plate provided with a bolt through-hole having a diameter 1.5 times that of the bolt or more is inserted into the joint portion and fixed,    wherein said joint portion includes a steel reinforcing member having a cross-sectional area in a range from 70% to 100% of a cross-sectional area of the steel frame member inserted into the joint portion and fixed thereto.