JP3990185B2 - Bonding structure between square steel pipe column and H-shaped steel beam and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing structure of a joint portion between a square steel pipe column and an H-shaped steel beam for improving the strength of the joint portion between the square steel pipe column and the H-shaped steel beam in a steel structure such as a steel building and a bridge, and the like. It relates to the construction method.
[0002]
[Prior art]
A steel frame structure is constructed by joining a square steel pipe column and an H-shaped steel beam by welding. When the rectangular steel pipe column and the H-shaped steel beam are joined, it is necessary to prevent a large stress from acting on the H-shaped steel beam and the stress from concentrating on the rectangular steel pipe column to cause deformation. As one of the structures, a structure using a through diaphragm is known.
[0003]
FIG. 6A is a perspective view of a joining structure of a conventional rectangular steel pipe column and an H-shaped steel beam, and FIG. 6B is an explanatory view of a joining construction method.
[0004]
As shown in FIG. 6 (a), a conventional structure for joining a square steel pipe column and an H-shaped steel beam to improve the strength of the conventional joint is provided on the upper and lower through diaphragms 7 welded to the square steel pipe column 1. The flange 2b of the shaped steel beam 2 is joined by welding.
[0005]
In the joining method using the through diaphragm 7, as shown in FIG. 6 (b), a square steel pipe column is cut into an upper column 1a, an intermediate portion (so-called dice) 1c, and a lower column 1b. The cutting is performed so as to have a predetermined length after assembly by welding in consideration of the thickness of the through diaphragm 7 passing between the dice 1c and the upper column 1a and the lower column 1b.
[0006]
A groove is provided on each of the cut surfaces of the upper column 1a and the lower column 1b and the upper and lower cut surfaces of the dice 1c.
[0007]
Next, a square through diaphragm 7 is set between the upper pillar 1a and the dice 1c and between the dice 1c and the lower pillar 1b, and the backing metal 5 is fixed by welding, and then the upper pillar 1a, the dice 1c and the lower part are fixed. The connecting portions of the column 1b and the through diaphragm 7 are integrated by welding. The through diaphragm 7 has a size protruding from the outer periphery of the square steel pipe column 1 in order to weld the H-shaped steel beam.
[0008]
Thereafter, the flange 2b of the H-shaped steel beam 2 is attached to the through diaphragm 7 and welded. A scallop 4 is provided at the welded portion of the H-shaped steel beam.
[0009]
[Problems to be solved by the invention]
The joint structure using the through diaphragm needs to cut a square steel pipe column, and there is a problem that a predetermined dimension cannot be obtained after welding unless the steel pipe column is cut accurately. In addition, since it is necessary to provide grooves on each of the cut surfaces of the upper column and the lower column, and the upper and lower cut surfaces of the dice, there are many groove processing points and there are many welding points. There is a drawback of hanging.
[0010]
Therefore, the present invention provides a joining structure between a square steel pipe column and an H-shaped steel beam and a method for constructing the same, which does not require cutting the square steel pipe column and does not require labor for welding work.
[0011]
[Means for Solving the Problems]
Junction structure between RHS Column and H-shaped steel beam of the invention, in the bonding structure of the square tubular columns H-shaped steel beam, the upper and lower reinforcing member made of a reinforcing piece which is divided into four on the outer periphery of the RHS Column A square steel pipe column is welded, a backing metal is welded to the flange of the H-shaped steel beam provided with a scallop and a welded portion of the reinforcing member, and a backing metal is welded to the groove of the reinforcing member piece The reinforcing member and the flange of the H-shaped steel beam are integrally welded in the width direction of the flange, the rectangular steel pipe column, the reinforcing member welded to the outer periphery of the rectangular steel tube column, and the vertical groove of the reinforcing member The web of the H-shaped steel beam inserted in between is integrally welded in the longitudinal direction of the web.
[0012]
Moreover, the construction method of the joining structure of the square steel pipe column of this invention and the H-shaped steel beam welds the upper and lower sides of the reinforcement member which consists of a reinforcement member piece divided into 4 to the outer periphery of a square steel pipe column, and is the vertical direction of a reinforcement member. Insert the web of the H-shaped steel beam with scallops between the grooves , set the H-shaped steel beam, weld the backing metal to the flange of the H-shaped steel beam and the welded part of the reinforcing member, After the backing metal is welded to the groove of the piece, the square steel pipe column, the reinforcing member and the flange of the H-shaped steel beam are welded together in the width direction of the flange, and the square steel pipe column, the reinforcing member and the H-shaped steel beam are welded together. The web is integrally welded in the longitudinal direction of the web.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Example 1
1 is a perspective view of a joining structure of a square steel pipe column and an H-shaped steel beam according to the present invention, FIG. 2 is a horizontal sectional view thereof, FIG. 3 is a longitudinal sectional view thereof, and an enlarged view of a welded portion, and FIG. FIG. 2 is a horizontal sectional view of a part and an enlarged view of a joint part.
[0014]
1 and 2, the joining structure of the present invention is a structure in which an H-shaped steel beam 2 is joined to a square steel pipe column 1 by welding via a reinforcing member 3 surrounding the square steel pipe column 1.
[0015]
3 and 4, the reinforcing member 3 composed of the reinforcing member pieces 3 a divided into four parts is temporarily attached to the outer periphery of the square steel pipe column 1, and then the upper and lower sides of the reinforcing member 3 are welded to the square steel tube column 1. The height of the reinforcing member 3 is approximately the same as the height between the flanges 2 b of the H-shaped steel beam 2.
[0016]
As shown in the enlarged view of FIG. 3, the groove 3b for welding the reinforcing member piece 3a in the vertical direction is formed at a position corresponding to the web 2a of the H-shaped steel beam 2, and the web 2a is interposed between the grooves 3b. It forms so that it may enter. The H-shaped steel beam 2 is provided with a scallop 4 to avoid crossing the weld lines.
[0017]
Next, the welding procedure will be described. The web 2a of the H-shaped steel beam 2 is inserted and set between the grooves 3b of the reinforcing member 3 welded to the square steel pipe column 1. Thereafter, the backing metal 5 is welded to the welded portion of the flange 2b and the reinforcing member 3, and the backing metal 5a is welded so that the weld metal does not fall on the groove 3b of the reinforcing member piece 3a, and then the flange 2b and the square steel pipe. The column 1 and the reinforcing member 3 are integrally welded in the width direction of the flange. Next, the square steel pipe column 1, the web 3a, and the reinforcing member 3 are integrally welded in the vertical direction.
[0018]
In this embodiment, by using the reinforcing member, it is not necessary to cut the square steel pipe column, and the working time can be greatly shortened because there are few welded portions.
[0019]
Example 2
FIG. 5 shows another embodiment of the joining structure of the square steel pipe column and the H-shaped steel beam according to the present invention, (a) is a horizontal sectional view, (b) is a longitudinal sectional view, The same reference numerals are given and description thereof is omitted. The present embodiment is intended to prevent stress concentration imbalance when the flange width is smaller than the square steel pipe column width.
[0020]
In FIG. 5, the square steel pipe column 1 and the H-shaped steel beam 2 are welded using the reinforcing member 3 in the same manner as in the first embodiment. The portion of the rectangular steel pipe column 1 to which the H-shaped steel beam 2 is not welded and the flange 2b of the H-shaped steel beam 2 are welded by the rib 6 to disperse the stress applied to the H-shaped steel beam 2. For the welding, a backing metal 5 is used.
[0021]
When the width of the flange is smaller than the width of the square steel pipe column, the stress concentration is relaxed and the strength is more stabilized by using the rib.
[0022]
【The invention's effect】
In the present invention, the reinforcing member is used and the H-shaped steel beam can be joined without cutting the square steel pipe column, and the welded portion is significantly larger than the conventional joining structure using the conventional through diaphragm. Therefore, the working time can be greatly shortened.
[0023]
When the flange width of the H-shaped steel beam is small compared to the width of the square steel pipe column, a reinforcing member is used and a rib is welded to the square steel pipe column and the H-shaped steel beam to prevent stress concentration imbalance. be able to.
[Brief description of the drawings]
FIG. 1 is a perspective view of a joining structure of a rectangular steel pipe column and an H-shaped steel beam according to the present invention.
FIG. 2 is a horizontal sectional view of a joint structure of a rectangular steel pipe column and an H-shaped steel beam according to the present invention.
FIG. 3 is a longitudinal sectional view of a joining structure of a rectangular steel pipe column and an H-shaped steel beam according to the present invention and an enlarged view of a welded portion.
FIG. 4 is a partial horizontal sectional view of a joint structure of a rectangular steel pipe column and an H-shaped steel beam according to the present invention.
FIGS. 5A and 5B show another embodiment of the joining structure of the rectangular steel pipe column and the H-shaped steel beam according to the present invention, wherein FIG. 5A is a horizontal sectional view and FIG. 5B is a longitudinal sectional view.
6A is a perspective view of a joining structure of a conventional square steel pipe column and an H-shaped steel beam, and FIG. 6B is an explanatory view of a joining method.
[Explanation of symbols]
1: Square steel pipe column 2: H-shaped steel beam 2a: Web 2b: Flange 3: Reinforcement member 3a: Reinforcement member piece 3b: Groove 4: Scallop 5: 5a: Back metal 6: Rib 7: Through diaphragm

Claims (4)

In the joining structure of the square steel pipe column and the H-shaped steel beam, the upper and lower sides of the reinforcing member consisting of the reinforcing member pieces divided into four parts are welded to the outer periphery of the square steel pipe column , and the flange of the H-shaped steel beam provided with the scallops A backing metal is welded to the welded portion of the reinforcing member, and a backing metal is welded to the groove of the reinforcing member piece, and the square steel pipe column, the reinforcing member, and the flange of the H-shaped steel beam are arranged in the width direction of the flange. A square steel pipe column, a reinforcing member welded to the outer periphery of the square steel pipe column, and a web of an H-shaped steel beam inserted between the longitudinal grooves of the reinforcing member are integrally welded. A joined structure of a rectangular steel pipe column and an H-shaped steel beam, which is integrally welded in the vertical direction.   When the flange width is smaller than the width of the square steel pipe column, the portion of the square steel pipe column to which the H-shaped steel beam is not welded and the flange of the H-shaped steel beam are welded by ribs. A joining structure of the rectangular steel pipe column and the H-shaped steel beam according to claim 1. The upper and lower sides of the reinforcing member made up of four reinforcing member pieces are welded to the outer periphery of the rectangular steel pipe column, and the web of the H-shaped steel beam provided with scallops between the longitudinal grooves of the reinforcing member is inserted into the H-shape. After setting the steel beam, welding the backing metal to the welded part of the flange of the H-shaped steel beam and the reinforcing member, and welding the backing metal to the groove of the reinforcing member piece, the square steel pipe column, the reinforcing member and the H-shaped A square steel pipe column and H, wherein the flange of the steel beam is integrally welded in the width direction of the flange, and the square steel pipe column, the reinforcing member, and the web of the H-shaped steel beam are integrally welded in the vertical direction of the web. Construction method of the joint structure with a shaped steel beam.   When the flange width is smaller than the width of the square steel pipe column, the portion of the square steel pipe column to which the H-shaped steel beam is not welded and the flange of the H-shaped steel beam are welded by ribs. The construction method of the joining structure of the square steel pipe column of claim | item 3 and an H-shaped steel beam.

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