JPH0633047Y2 - Joint structure of steel structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for joining steel structural materials in the fields of construction, civil engineering and bridges.

[0002]

2. Description of the Related Art Starting with the joining of steel columns and steel beams,
Joining of steel structural members of steel structures is performed by means of welding and bolting. However, in general, it takes a lot of time to weld and it is difficult to adjust the length, so it is better that there are few welding spots on site. Also, even with the method of bolting, it is preferable that the number of places is as small as possible. By the way, if we focus on the joints of architectural steel frames, the number of high-strength bolts is about 100 per joint, and it is troublesome to tighten all of them.

The inventor first devised a metal joint and a metal joint structure of a steel frame structure material which can be joined at a tightening point of a few bolts as much as possible, that is, one-touch joining, and applied for this as a Japanese Patent Application No. 2-106139. As shown in FIG. 2, a plurality of joining pieces 2 are integrally projected from a base 1 in a comb-like shape at a small interval, and a through hole 3 through which a bolt penetrates is formed in the joining piece 2 in the orthogonal direction. Using the metal fittings D and E, the base portion 1 of the metal fittings D and E is welded to the ends of the steel structure members F and G, the joint pieces 2 of the metal joints D and E are meshed with each other, and the through hole 3 is formed. The bolt 5 is inserted through the washer 14, the washer 14 is interposed, and the nut 15 is tightened to join the steel structure members F and G to each other through the joining of the metal fittings D and E. The through hole 3 provided in the joining piece 2 is a loose hole for the bolt 5 penetrating the joining piece 2 and may be a notch hole.

[0004]

However, in the joining structure of FIG. 2, the joining pieces 2 of the joining metal pieces D and E are engaged with each other by half, and the through hole 3 becomes a loose hole in the axial direction and in the figure. The degree of freedom in joining adjustment was limited to the front-back direction of the paper.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, and to join at the tightening points of the bolts which are as few as possible.
The object is to provide a joint structure for a steel structural material capable of three-dimensional position adjustment in the axial direction of the structural material and the X-axis direction and the Y-axis direction with the axial direction of the structural material as a base line, so to speak.

[0006]

In order to achieve the above object, the present invention integrally projects a tooth-shaped joint piece of a comb from a base portion connectable to an end of a steel structure, and extends in a direction orthogonal to the joint piece. A toothed joint piece of a comb can be formed from a joint metal A having a loose through hole through which a bolt penetrates, and a base portion that can be similarly connected to the end of a steel structure material and is twisted by 90 ° compared to the base portion of the metal joint A. A joint metal piece C and a joint metal piece A, which are integrally projected and have loose through holes through which bolts penetrate in the orthogonal direction in the joint piece.
The tooth-shaped joint piece of the comb that meshes with the joint piece of No. 1 and the tooth-shaped joint piece of the comb that meshes with the joint piece of the joint metal C are formed so as to be aligned in directions orthogonal to each other and directed in opposite directions. It consists of a combination with a metal joint B having a loose through hole through which a bolt penetrates in a direction perpendicular to the tooth-shaped joint piece.
And, the gist is to join the joining metal pieces B and C by engaging the joining pieces with each other and inserting a bolt into the loose through hole to tighten the bolt.

[0007]

According to the present invention, the joining metal pieces A and B, and the joining metal pieces B and C are formed by alternately engaging the tooth-like joining pieces of the comb with each other and tightening the engagement in the orthogonal direction with the bolts. The two pieces can transfer 90% or more of the axial force of the bolt by two-sided friction. Further, since each joining piece is subdivided into comb-like teeth as small as possible, the cross-section axial yield strength of each joining piece is smaller than the frictional force. That is, when each joint piece is subjected to a frictional force with a bolt, its cross-sectional proof strength can be exerted 100%, and the joint metal pieces A and B and the joint metal pieces B can be combined so that two books are entwined and combined. It becomes difficult to separate Cs from each other.

Further, the joint metal pieces A and B and the joint metal piece B
And C each have a degree of freedom in joining adjustment in the axial direction which is the direction of engagement and the vertical direction orthogonal thereto, and the joining of the joining metal pieces A and B and the joining of the joining metal pieces B and C are joint pieces. Since the alternate meshing directions of the two are different from each other by 90 °, adjustment in each vertical direction is adjustment in the other horizontal direction, and three-dimensional position adjustment is possible as a whole.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the joining structure of the present invention, and the present invention comprises three combinations of joining metal pieces A, B and C.

In the metal joint A, a plurality of joint pieces 8 are integrally projected from the base portion 6 in the shape of a comb tooth at small intervals, and a loose through hole 3 through which a bolt penetrates is formed in the joint piece 8 in the orthogonal direction. The base 1 is weldable to the end of the steel frame structure material to be joined as described later, and the longitudinal surface on the side opposite to the surface from which the joining piece 8 corresponding to the comb ridge projects is the welding surface 4. Further, the interval between the joining pieces 8 protruding from the base portion 6 is such a width that a joining piece from another joining piece can be inserted between them, and the through hole 3 provided in the joining piece 8 has a bolt (high-strength bolt 5 ), Which is a loose hole, and may be a rectangular hole or the like in addition to the circular hole as shown in FIG. 1, and the through hole 3 may be a cutout hole as another embodiment.

Similar to the above-mentioned metal joint A, the metal joint C has a plurality of joint pieces 9 projecting integrally from the base portion 7 in the shape of a comb tooth at small intervals, and a bolt through which the bolt penetrates in the orthogonal direction. Although the through hole 3 is formed, the base portion 7 of the metal joint C has a twisted portion 7a of 90 ° as compared with the base portion 6 of the metal joint A.
Added a twist. As a result, 7 welding surfaces 4 from this base
The directions in which the joining pieces 9 are arranged are orthogonal to each other. The twisted portion 7a has a large boundary surface and has a haunch structure so as not to cause a decrease in strength.

The metal joint B has a comb tooth-shaped joint piece 10 that meshes with the joint piece 8 of the metal joint A and a comb tooth-shaped joint piece 11 that meshes with the joint piece 9 of the metal joint C in a direction orthogonal to each other. It is formed so as to be aligned with and facing in the opposite direction. Also in this case, in order not to cause the strength to decrease, the mutual boundary surfaces of the portions corresponding to the comb ridges are made large and the haunch structure is adopted. The loose through holes 3 through which the bolts penetrate are formed in the joining pieces 10 and the joining pieces 11 in the orthogonal direction.

Next, the joining structure of the steel structure material of the present invention, which is carried out by using these joining metal parts A, B and C, will be explained. In the figure, reference numerals 12 and 13 denote members to be welded as ironing steel structural members such as beams, pillars or braces, and a welded metal A is welded to an end of the member to be welded 12 via a welding surface 4 to be welded. The joint metal C is welded to the end of 13 through the welding surface 4.

Then, the joining pieces 8 and 10 of the joining metal pieces A and B are meshed with each other, and although not shown, a high strength bolt is inserted into the loose through hole 3 and a washer and a nut are fitted to the joining metal pieces A and B. Tighten the whole. Also, the joining hardware B,
The joining pieces 11 and 9 of C are meshed with each other, a high-strength bolt is similarly inserted into the through hole 3, and a washer and a nut are fitted to tighten the entire joining pieces B and C.

At that time, the positions of the metal joints A and B can be adjusted in the axial direction α and the vertical direction β by the amount of the loose through hole 3.
The positions of the metal joints B and C can be adjusted in the axial direction α ′ and the horizontal direction γ, and both can be positionally adjusted in the three-dimensional direction. The materials to be joined 12 and 13 may be columns and beams, and the metal joints A and C can be joined to the beams by attaching the welding surfaces 4 to the sides of the columns. .

[0016]

[Effects of the Invention] As described above, the joining structure of the steel frame structure material of the present invention can reliably join the steel frame structure materials with the fewest number of bolt tightening points, so to speak, one-touch operation is simple and quick. Further, the degree of freedom can be given not only in the axial direction and the vertical direction but also in the horizontal direction, and the three-dimensional position adjustment is possible, and the construction can be rationalized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a joint structure for a steel structure material of the present invention.

FIG. 2 is a front view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base part 2 ... Joining piece 3 ... Through hole 4 ... Welding surface 5 ... Bolt 6.7 ... Base part 7a ... Twisted part 8, 9, 10, 11 ... Joining piece 12, 13 ... Joined material 14 ... Washer 15 ... Nut

Claims (1)

[Scope of utility model registration request] 1. A metal joint A having a tooth-shaped joint piece of a comb integrally projecting from a base portion connectable to an end of a steel structure material, and a loose through hole through which a bolt penetrates in a direction orthogonal to the joint piece. ,
Similarly, a toothed joint piece of a comb is integrally projected from the base portion which is connectable to the end of the steel structure material and is twisted by 90 ° as compared with the base portion of the joint metal A, and the joint piece is bolted in a direction orthogonal to the joint piece. And a toothed joint piece of a comb that meshes with the joint piece of the metal joint A and a toothed joint piece of the comb that meshes with the joint piece of the metal joint C are orthogonal to each other. The comb-shaped metal fittings B and the metal-bonded metal fittings B, which are formed so as to be aligned in the opposite direction and are oriented in the opposite direction, and have loose through holes through which bolts penetrate in the orthogonal direction in the tooth-shaped joint pieces of these combs. , And the joining hardware B and C, the joining pieces are engaged with each other,
By inserting the bolt into the loose through hole and tightening it,
A joining structure of steel frame structural members characterized by joining.