JPH0656032B2 - Joint structure of steel column with closed section and beam made of laminated wood - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to, for example, a joint structure of a column having a closed cross section such as a square steel tube column and a beam made of laminated wood.

[Conventional technology]

Recently, an laminated material formed by laminating a plurality of thin wooden boards while adhering the same with an adhesive material is a uniform material with no defects, and is therefore widely used as a structural material for buildings.

When using this type of structural material, it is naturally conceivable to use it together with steel frame materials such as H-shaped steel and square steel pipes, but heretofore most of this type of joining has been performed using joining hardware with various shapes. Has been.

[Problems to be Solved by the Invention]

However, when the H-section steel is used for the column, the column and the beam can be relatively easily joined by using the joining metal object. However, when the closed section member such as the rectangular steel pipe is used, the attachment of the joining metal item to the column and the It is not easy to join the pillar and the beam because the joining of the joining metal and the end of the beam is very troublesome.

The present invention has been proposed to solve the above-mentioned conventional problems, and it is possible to firmly and firmly join a steel column having a closed cross section and a beam made of laminated wood to each other. An object of the present invention is to provide a joint structure between a steel frame member having a closed cross section and a steel frame beam made of laminated wood.

[Means for solving problems]

The present invention relates to a joint structure of a steel column having a closed cross section such as a square steel pipe or a circular steel pipe and a steel beam made of laminated wood, in which a plurality of joint holes are formed on the side of the steel column joint of the closed cross section. A slit is formed at the end of the beam made of laminated wood, an anchor nut is installed on the back side of the joint hole, and a male body is inserted in the outer periphery of the joint hole and a cylinder body with a screw hole in the inner periphery is inserted. At the same time, the tip of the cylinder is screwed into the anchor nut, and the T-shaped beam joint metal is projected from the joint of the steel column by a plurality of joint bolts screwed into the screw holes of the cylinder. By inserting the flange portion of the T-shaped beam joint metal fitting into the slit of the beam end portion and bolting the flange portion and the beam end portion with a plurality of joint bolts to join the column and the beam Is achieved.

〔Example〕

 The present invention will be described below with reference to an embodiment shown in the drawings.

In FIGS. 1 and 2, reference numeral 1 is a circular closed-section steel frame column (hereinafter referred to as a pillar), number 2 is a wooden beam (hereinafter referred to as a beam), and number 3 is a T-beam connection. It is a hardware.

A plurality of joint holes 4, ... Are bored at regular intervals in the vertical direction on the side surface of the joint portion of the pillar 1, and a plurality of anchor nuts 5 ,. ing.

The joining hole 4 is preliminarily drilled in a factory or the like when processing a steel frame, and the anchor nut 5 is also attached by welding or the like in advance when a steel frame is processed in a factory or the like.

A cylindrical body 6 is inserted into each of the joint holes 4.

A male screw portion 7 is formed on the outer circumference of the cylinder body 6, and a screw hole 8 is formed on the inner circumference of the cylinder body 6.

Further, the beam 2 is formed by laminating a plurality of thin plates of about 2.5 to 5 cm while vertically adhering with an adhesive, and at the end of the beam 2, a slit 9 continuous in the vertical direction is formed. Has been done.

The T-shaped beam joint hardware 3 is formed in a T shape from the fixed flange portion 10 and the beam joint flange portion 11, and a plurality of joint holes (not shown) are formed in the fixed flange portion 10 and the beam joint flange portion 11. Has been done.

In the T-shaped beam joint metal 3, the fixing flange portion 10 is attached to the joint portion of the pillar 1, and the high-strength joint bolt 12 is screwed into the screw hole 8 of the tubular body 6 from the joint hole of the fixing flange portion 10. It is fixed by.

Further, the ends of the beam 2 are the beam-joint flange portion 1 of the T-shaped beam-joint metal fitting 3.
1 is inserted deeply into the slit 9 at the end of the beam 2 and is bolted with a plurality of joining bolts 13 penetrating the beam joining flange 11 and the joining hole at the end of the beam 2 to join the column 1.

The diameter and number of high-strength joint bolts, and the height and thickness of the T-shaped beam joint metal 3 are appropriately changed depending on the cross-sectional size of the beam 2 to be jointed.

Reference numeral 14 in the drawing is a reinforcing plate attached for the purpose of reinforcing the joint portion.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

The T-shaped beam jointed metal is used as the jointed metal, and the T-shaped beam jointed metal is bolted with a high-strength joint bolt that is screwed into the fixing flange portion of the cylindrical body attached to the joint of the column. By doing so, it is possible to project on the column connection part, and the beam end made of laminated wood can be inserted into the slit formed at the beam end part of the beam joint flange part of the T-shaped beam joint metal and Since the beam joining flange portion can be joined by bolting, the column and the beam can be joined very easily and reliably.

[Brief description of drawings]

FIGS. 1, 2 and 3 show an embodiment of the present invention. FIG. 1 is a cross-sectional view of a column joint portion showing a state where columns and beams are joined, and FIG. The vertical sectional view and FIG. 3 are detailed sectional views of the main parts in FIG. 1 ... Pillar, 2 ... Beam, 3 ... T-shaped beam joining metal, 4 ... Joining hole, 5 ... Anchor nut, 6 ... Cylinder, 7 ... Male screw part, 8 ... Screw hole, 9 ...... Slit, 10 ...... fixed flange part, 11 ...... beam joint flange part, 12 ...... high strength joint bolt, 13 ...... joint plate, 14 ...... reinforcement plate.

Claims (1)

[Claims] 1. A plurality of joint holes are formed on the side of a steel column joint portion having a closed cross section, and a slit is formed at the end of a beam made of laminated wood. Anchor nut is installed in, the male threaded portion on the outer periphery in the joint hole, the tubular body having a threaded hole on the inner periphery is inserted and the tubular body tip portion is screwed into the anchor nut, A T-shaped beam joint metal fitting is projectingly provided on a joint portion of the steel frame column by a plurality of joint bolts screwed into screw holes of the cylindrical body, and a flange portion of the T-shaped beam joint metal fitting is a beam end portion. The joint structure between a steel column having a closed cross section and a beam made of laminated wood, which is inserted into the slit and the flange portion and the beam end portion are bolted by a plurality of joint bolts.