JP2571728B2 - Beam-to-column connection system for steel pipe structures - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for joining columns and beams of a steel pipe structure in a building.

(Prior Art) FIGS. 9 to 12 show a conventional column / beam joining method of a steel pipe structure. FIGS. 9 and 10 show a case where a rectangular steel pipe column is used, and a diaphragm is provided on a lower steel pipe column a. b, the beam c is joined to the diaphragm b, and the upper and lower steel pipe columns a are joined at the upper part of the beam by field welding w.

FIGS. 11 and 12 show a case where a circular steel pipe column is used. A stiffener ring d is welded to a steel pipe column a, a beam bracket e is further welded to the ring d, and a beam c is joined thereto. The upper and lower steel pipe columns a are joined at the upper part of the beam by on-site joining w.

(Problems to be Solved by the Invention) In the above-mentioned conventional method, since the joining of the steel pipe columns is performed in-situ welding at the upper part of the beam, the quality and performance are affected by the weather and the skill of the welder and are unstable. , Lacked reliability. In addition, due to the shortage of welding technicians as in recent years, particularly, it is difficult to secure on-site welding technicians.

In addition, the column-beam joint part has many manufacturing processes and is complicated, and the shape of the joint changes depending on the number of floors and the joint part.

Furthermore, in order to save labor and work safety, the beam is divided into one floor on the floor, or the floor is divided into several blocks to lay the ground and constructed by the lift-up method. The method is not applicable.

Furthermore, a beam joint is welded to a steel pipe column and transported by a trailer. However, recently, it is difficult to secure a trailer, and transportation costs increase due to road conditions.

The present invention has been proposed in view of the problems of the prior art described above, and the object thereof is to provide a column-beam joining apparatus having a steel pipe structure which is excellent in workability and is structurally highly reliable. is there.

(Means for Solving the Problems) In order to achieve the above object, a column-beam joining apparatus of a steel pipe structure according to the present invention has a slightly larger cross section than a steel pipe column to be joined.
A pair of upper and lower stiffener rings protrude from the outer peripheral surface, and a grout material discharge port and a grout material injection port are respectively provided on the upper and lower sides. The upper and lower portions are fitted to the upper end of the lower steel column and the lower end of the upper steel column, respectively, and bolts for temporary fixing are screwed into upper and lower screw holes of the joining steel tube, respectively. While the grout is injected and filled into the gap formed between the upper and lower steel pipe columns and the upper and lower joining steel pipes through the grout material inlet and the grout material outlet, and The upper and lower flanges of the steel beam are joined to the stiffener ring, respectively.

(Operation) According to the present invention, a steel pipe for joining a steel pipe column as a beam-column joint member is fitted over the upper and lower steel pipe columns so as to temporarily fit into the upper and lower screw holes of the steel pipe for joining the steel pipe column. Screw in the bolt,
The upper and lower steel pipe columns are clamped, and the upper and lower steel pipe columns are temporarily fixed to the joining steel pipes.Thus, in the gap formed between the upper and lower steel pipe columns and the joining steel pipes, When the grout material is injected and filled from the grout material inlet provided at the lower end until it leaks from the grout material outlet provided at the upper end of the joining steel pipe, the upper and lower steel pipe columns and the steel pipe columns are joined via the grout material. And the upper and lower steel pipe columns are integrally connected via the connecting steel pipe of the steel pipe column without welding work.

Further, the upper and lower flanges of the steel beam are joined by stiffener rings disposed on the upper and lower outer peripheral surfaces of the joining steel pipe, whereby the steel beam and the upper and lower steel pipe columns can be easily joined.

Further, by disposing a stiffener ring constituting a beam-column joint member on the outer peripheral surface of the steel pipe-column joint steel pipe, the steel beam can be easily joined by the steel pipe-column joint steel pipe.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

In FIGS. 1 to 4, A is a steel pipe for joining a steel pipe column, which is slightly longer than a beam and has a stiffener ring 2 on the upper and lower outer peripheral surfaces of a main body 1 having a cross section slightly larger than a rectangular steel pipe column B. A horizontal rib 3 is provided on the inner peripheral surface so as to protrude in the circumferential direction.

A grout inlet 4 is provided at the lower end, and a grout outlet 5 is provided at the upper end.
Are provided with screw holes 6 above and below.

The horizontal rib 3 is made of a square steel material manufactured separately from the main body 1 and may be continuously bonded over the entire inner peripheral surface of the main body 1 or may be intermittently welded. Good.

Alternatively, the steel pipe A for joining the steel pipe column may be made of cast iron molded integrally with the main body 1, the stiffener ring 2, and the horizontal rib 3.

When using the steel pipe A for joining a steel pipe column, the lower half of the steel pipe A for fitting is inserted into the upper end of the lower steel pipe column B of the upper and lower steel pipe columns to be joined. The steel pipe column is seated on the L-shaped steel piece 7 welded to the surface, and the steel pipe column is joined by the bolt 8 screwed into the screw hole 6 so that a grout injection gap is formed between the steel pipe column B and the steel pipe A for joining the steel pipe column. The steel pipe A is temporarily fixed.

Next, the upper end of the steel pipe A for joining the steel pipe column and the lower end of the upper steel pipe column B are fitted, and the L-shaped steel piece 7 welded to the outer periphery of the steel pipe column B is attached to the upper end of the steel pipe A for joining the steel pipe column. At the same time, it is temporarily fixed by a bolt 8 screwed into the screw hole 6 so that a grout material injection gap is formed between the steel pipe A for joining the steel pipe column and the upper steel pipe column B.

Next, the beam C is temporarily joined via the stiffener ring 2.

In the same manner, after several floors have been constructed, the columns are erected and the construction is adjusted, and the beams are permanently joined with high tension bolts.

Next, a grout material is injected into and filled in the gap between the steel pipe column A and the steel pipe column B of the steel pipe column, and the steel column B, B and the beam C on the upper and lower floors are integrated through the steel pipe A for bonding the steel column. Join.

FIGS. 5 to 8 show an embodiment in which the present invention is applied to a steel pipe column having a circular cross section. In the drawings, the same reference numerals are given to parts equivalent to those in the above embodiment.

In addition, after fitting the steel pipe A for connecting the steel pipe column to the lower steel pipe column B, the beam for which one floor or one floor is divided into several blocks on the floor and laid, and the steel pipe A for connecting the steel pipe column, Is lifted up to a required height by a lifting means mounted on the lower steel pipe B, and the steel pipe column B
L at the upper and lower end positions of steel pipe A for connecting steel pipe columns
The mold slabs 7 and 7 are welded, and a grout material is press-fitted between the steel pipe A for joining steel pipe columns and the gap between the steel pipe columns B in the same manner as in the above embodiment.

At the point where the beam and column are joined at the same time,
Is inserted into the steel pipe A for jointing steel pipe columns, temporarily fixed with bolts 8, and then a grout material is injected into the gap between the two.

(Effect of the Invention) As described above, in the column-beam joining apparatus having a steel pipe structure according to the present invention, a pair of upper and lower stiffener rings project from the outer peripheral surface with a slightly larger cross section than the steel pipe column to be joined. A grout material discharge port and a grout material injection port are respectively provided on the upper and lower sides, and a lower half portion of the steel pipe column is used. The upper half portion is fitted with the upper end portion of the lower steel column and the lower end portion of the upper steel column, and a temporary fixing bolt is screwed into the upper and lower screw holes, and the upper and lower steel column is pressed with the same bolt. By this, the upper and lower steel pipe columns are temporarily fixed, and a gap is formed between the upper and lower steel pipe columns and the steel pipe for joining the steel pipe columns, so that the gap grouts the lower part of the steel pipe for joining steel pipe columns. Inject from grout inlet and grout on top By filling the gap with grout material until it is discharged from the material discharge port, the upper and lower steel pipe columns are connected via the steel pipe for connecting the steel pipe columns, and the steel frame is connected to the stiffener ring on the outer peripheral surface of the steel pipe for connecting the steel pipe columns. Welding the upper and lower flanges of the beam eliminates the need for on-site welding to join the steel pipe columns and the beam, and the quality and performance are stable without being affected by the weather or welding technology. A column-beam joint is formed, and problems such as a delay in the process due to welding technicians are eliminated.

In addition, since the beam-column joints are separately manufactured separately from the processing of the steel pipe columns, the manufacturing process is reduced, the work is simplified, and the transportation can be carried out without particularly requiring a trailer. You can save money.

Furthermore, by standardizing the shape of the beam-column joints according to the number of floors and joints, mass production becomes possible and production management becomes easy.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a beam-column joining apparatus having a steel pipe structure according to the present invention, FIG. 2 is a view taken along arrows in FIG. 1, and FIG.
FIG. 4 is a plan view showing the state of use, FIG. 4 is a longitudinal sectional view thereof, FIG. 5 is a front view showing another embodiment of the present invention, FIG. 6 is a roll view of FIG. FIG. 7 is a cross-sectional plan view showing the state of use, FIG. 8 is a vertical cross-sectional view thereof, FIGS. 9 and 10 are vertical cross-sectional views and cross-sectional plan views showing the state of implementation of the conventional method, FIGS. FIG. 12 is a longitudinal sectional view and a cross-sectional plan view showing the state of implementation of another conventional method. A: steel pipe for joining steel pipe columns, B: steel pipe columns, 1 ... body,
2… stiffener ring, 3… horizontal rib, 4… grout material inlet, 5… grout material outlet.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masashi Matsudo 4-6-15 Sendagaya, Shibuya-ku, Tokyo Inside Fujita Industries Co., Ltd. (72) Inventor Misada Munemura 4-6-115 Sendagaya, Shibuya-ku, Tokyo Fujita Inside the Industrial Co., Ltd. (56) References Jikken Sho 54-4243 (JP, Y2)

Claims (1)

(57) [Claims] 1. A cross section slightly larger than a steel pipe column to be joined, a pair of upper and lower stiffener rings projecting from the outer peripheral surface, and a grout material discharge port and a grout material injection port are respectively disposed above and below. The lower half and the upper half of the steel pipe column connecting steel pipe in which each screw hole is drilled are fitted to the upper end of the lower steel pipe column and the lower end of the upper steel pipe column, respectively. Each of the bolts for temporary fixing is screwed in, and the upper and lower steel pipe columns are pressed together, and the grout material inlet and the gap formed between the upper and lower steel pipe columns and the upper and lower joining steel pipes are provided. A grout is injected and filled through a grout material discharge port, and upper and lower flanges of a steel beam are joined to the upper and lower stiffener rings, respectively.