KR101648422B1 - Concrete filled tube with round angle - Google Patents

Abstract

The present invention relates to a concrete filled tube (CFT) column with a round angle. The column of the present invention comprises: four round angles having a part bent at 90C in an arcuate shape thereon, which are spaced apart from one another and vertically arranged in the corner of a tube; and four outer plates which are coupled to the outside of the round angles to form an outer surface. According to the present invention, the composition elements are optimized for a concrete filled steel tube (CFT) column. Moreover, the present invention is capable of optimizing use of steel material by intensively arranging a round steel formed by molding or bending in a CFT assembly to take a break from a conventional CFT column only made up of a panel and minimizing processing of the outer plate supporting the same.

Description

{Concrete filled tube with round angle}

The present invention relates to a synthetic column, and more particularly, to a concrete filled type synthetic column using a round angle.

In recent years, the construction market has been in the process of proposing a differentiated construction method and a cost reduction method that have different advantages from the existing one due to the decrease in the order quantity due to the economic deterioration and intense cost competition. Progress is becoming more common.

(CFT [Concrete Filled Tube] method) in which concrete is placed inside a rectangular steel pipe or a round steel pipe which has been developed and used in accordance with these changes is widely used.

While the use of the CFT method has been diversified for various reasons, a structure that can not be achieved by conventional shapes or cross sections has been generated, and the demand for usability has been increasing, but the details and application methods corresponding thereto have not been various.

FIGS. 1 and 2 are a cross-sectional view of a conventional CFT column, and FIG. 3 is a perspective view of a conventional CFT column.

The conventional CFT column (C) method is a composite column made by combining a steel column assembly and a concrete column rigidity by disposing a steel material (10) on an outer edge portion as shown in FIG. However, since the shape of the structure is closed, the thickness of the outer steel (10) is thicker than necessary in order to satisfy the standard of the width-to-thickness ratio without insufficient reinforcement inside the column (C) Because of the drawback that the amount of steel is increased due to the reason, it is applied only to special site. Therefore, there is a need for a method of making a CFT column (C) that can withstand the maximum structural strength and side pressure with minimum amount of steel.

In the conventional CFT column C, it is not easy to transmit the flange load between the girder BM and the column C at the joining portion of the girder BM and the column. Therefore, the reinforcing steel plates 20 and 30 And 3 as shown in Fig. 3, it is necessary to reduce the unnecessary steel materials.

In addition, when the CFT columns are to be installed in two or three layers at the same time, it is difficult to arrange the reinforcing bars in the columns due to the closed cross section and it is not easy to fix them, and the application of the cross- The viscosity should be improved.

Korean Registered Patent No. 10-0684931 (Mar. 23, 2007), "Prefabricated closed-type steel frame member using bending-molded steel plate and its installation structure" Korean Registered Patent No. 0898283 (2009. 05. 12), "Steel Column for SRC Column Assembled with Reinforced Concrete and Method of Steel Frame Construction Using the Steel Column"

An object of the present invention is to provide a concrete filled type synthetic column using a round angle which can secure workability, self-reliance, and economy.

In order to achieve the above object, a concrete-filled composite column using a round angle according to an embodiment of the present invention is an angle formed by arcuate portions bent at 90 degrees and vertically arranged at a corner position of the column Four round angles; And four outer plates respectively coupled to the outside of the round angles to form an outer surface.

Here, the round angle may further include a rounded rib which is bent at 90 [deg.] In an arcuate shape at both ends.

In addition, the round angle may include one or two portions bent at 90 degrees.

Furthermore, the round angle and the outer plate can be engaged by fastening bolts and fastening nuts, respectively.

In addition, the railing angle and the outer plate may be joined by welding or riveting, respectively.

Further, the railing angle and the outer plate may be coupled by a pair of facing fastening bolts and fastening nuts, and another pair of facing rails may be joined by welding.

Further, the railing angle and the outer plate may be joined by a pair of facing each other by rivets, and another pair of facing each other by welding.

The outer plate may further include an opening at a position where the composite beam is inserted.

In addition, when the vertical reinforcing bar is disposed inside the round angle, the joining angle may further include a joining angle for joining the end of the round angle to the vertical reinforcing bar.

According to the pre-assembled column using the rib-rounded angle and the reinforcing bar according to the embodiment of the present invention,

First, it is possible to optimize the use of steel by providing optimized shape to the CFT column and by concentrating the rounded steel of the shape formed by forming or bending to the corner of the assembly of CFT, And it is possible to minimize the machining of the outer plate for holding the plate.

Second, unlike the conventional CFT, a round angle in which a portion bent at 90 degrees to a column corner is an arc-shaped portion has a structurally effective cross-sectional area to increase the strength.

Third, in order to compensate for the disadvantages of the conventional closed type CFT which is difficult to arrange and fix the reinforcing bars therein, it is possible to dispose the reinforcing bars by disposing round angles at the column corners.

Fourth, by providing two portions bent at 90 ° of the round angle, if the strength is concentrated on the column or the weak axis of the column, the steel can be concentrated on the portion where the amount of steel used is concentrated.

Fifth, if it is possible to produce jointing and welding joints of fastening bolts, clamping nuts or rivets according to the use of CFT, if the main steel material of the column is thin and deformed due to welding, or if the steel material is thick, In the case of deformation, only the opposite side is welded, so that the deformation due to the welding heat can be minimized.

Sixth, if assembly and strength are allowed, the entire surface can be assembled by fastening bolts, fastening nuts, rivets or the like, so that diversity and variety of manufacturing methods can be attained.

Seventh, it is possible to secure diversity of products by presenting production methods according to size and thickness of products, and presenting effective cross-sections.

Eighth, an opening is formed in the outer plate at the joint between the column and the beam so that the beam can penetrate the inside of the column to improve seismic performance.

Ninth, even if the use of reinforcing bars is excluded, it is obligatory to insert the reinforcing bars into the columns. If the vertical reinforcing bars are fixed by using the connecting angles at the round angles arranged at the corner of the columns and the remaining outer plates are assembled, Can be effectively fixed.

Figures 1 and 2 are cross-sectional views showing a conventional CFT column.
3 is a perspective view showing a conventional CFT column.
4 is a perspective view showing a concrete filled type synthetic column according to an embodiment of the present invention.
FIG. 5 is a partially exploded perspective view of the concrete-filled composite column shown in FIG.
FIG. 6 is various cross-sectional views of the concrete-filled composite columns shown in FIG.
Figs. 7 to 9 are cross-sectional views illustrating various joining methods of the concrete-filled composite column shown in Fig.
10 is a perspective view and a plan view showing an opening formed in the outer plate;
11 is a perspective view and a plan view showing that a vertical reinforcing bar is disposed inside a concrete filled type synthetic column.
12 is a perspective view showing that a beam is coupled to a concrete filled type synthetic column.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

FIG. 4 is a perspective view showing a concrete-filled composite column according to an embodiment of the present invention, FIG. 5 is a partially exploded perspective view of the concrete-filled composite column shown in FIG. FIG. 10 is a perspective view and a plan view showing an opening formed in the outer plate, and FIG. 11 is a cross-sectional view showing various concrete assemblies of a concrete filled type synthetic column shown in FIG. FIG. 12 is a perspective view showing that a beam is coupled to a concrete filled type synthetic column. FIG. 12 is a perspective view showing a vertical reinforcing bar disposed on the inside of the column. FIG.

4-12, a concrete filled composite column using a round angle includes four rounded angles 100 and four outer plates 200. As shown in FIG.

The four round angles 100 are angles formed by arcuate portions A bent at 90 degrees and are vertically arranged at the corner positions of the columns.

The four outer plates 200 are respectively coupled to the outside of the round angles 100 to form an outer surface.

The concrete-filled composite column may have an internal reinforcing assembly L having a cross-section of a lattice shape in which a plurality of plate-shaped steels are assembled as required.

Here, as shown in FIG. 6 (a), the round angle 100 may have a round rib 110 bent at 90 degrees at both ends in an arc shape.

As shown in FIG. 6, the round angle 100 having an arcuate portion A bent at 90 degrees to the columnar corner may be disposed to improve the structural strength and the sectional area. In addition, in order to compensate for the disadvantages of the conventional closed type CFT in which the reinforcing bars are difficult to place and fix, it is possible to dispose the reinforcing bars by arranging the round angles 100 at the column corners.

6 (a) and 6 (b), the round angle 100 may include one portion A bent at 90 degrees, and may have one portion 90 as shown in FIG. 6 (c) And two bent portions A may be provided.

That is, as shown in FIG. 6 (a), the rounded ribs 110 may be provided at both ends of the rounded angle 100, As shown in (c) of FIG. 6, when the two portions A bent at 90 degrees are concentrated so that the strength is concentrated on the strong axis or the weak axis of the column, the steel can be concentrated on the portion where the amount of steel used is concentrated.

As shown in Figs. 7 and 8, the railing angle 100 and the outer plate 200 are coupled by a pair of fastening bolts B and a fastening nut N, And can be joined by welding (W).

As shown in Figs. 7 (a) and 8 (a), the round angle 100 has one portion A bent at 90 degrees, and when the round rib 110 is provided, Are fastened together by the fastening bolts (B) and the fastening nuts (N) in advance, and another pair of the fastening bolts (B) and the fastening nuts (N) are joined together by welding (W).

7 (b) and 8 (b), when the round angle 100 is provided with one portion A bent at 90 degrees, a pair of facing bolts B is fastened to the fastening bolt B, And the coupling nut (N), and the other pair facing each other is joined by welding (W).

Even if two rounded angles 100 are provided at two 90 degrees as shown in Figs. 7 (c) and 8 (c), the pair of facing bolts B and It is possible to easily engage with each other by the coupling nut N and by coupling the other pair facing each other again by the welding W. [

As shown in Fig. 9 (a), the rounded angle 100 and the outer plate 200 can be joined only by welding W, respectively, and as shown in Fig. 9 (c) The outer plate 100 and the outer plate 200 may be engaged only by the fastening bolts B and the fastening nuts N, respectively. Of course, the raindle angle 100 and the outer plate 200 may be combined only by a rivet R, respectively.

Also, as shown in FIG. 9 (b), the railing angle 100 and the outer plate 200 are joined by a pair of facing rivets R, while the other pair facing each other is welded .

7 and FIG. 9, it is possible to produce the joints of the fastening bolts B, the fastening nuts N or the rivets R and the welding (W) joints in parallel, The outer plate 200 on both sides is fixed by bolting or riveting as shown in FIGS. 7 to 9, and then the outer sides of the remaining two surfaces are fixed When the plate (200) is fixed and the product is finished with welding (W), only the opposite side is welded, so that the deformation due to the welding heat can be minimized.

9 (c), it is possible to assemble the entire surface by using the fastening bolts B, the fastening nuts N, or the rivets R, The variety of methods can be achieved.

10, the outer plate 200 may further include an opening 210 at a position where the composite bone BM is inserted.

That is, only the round angle 100 disposed at the corner of the column is bent and formed, and the cross-sectional size of the column can be adjusted without any additional processing of the outer plate 200. As shown in FIG. 10, It is possible to form the opening 210 in the outer plate 200 at the joining portion and penetrate the beam BM into the column to improve seismic performance. Also, the outer plate 200 may be machined to reduce the production cost without separately machining the round angle 100 of the outer periphery where the internal force is concentrated.

11, when the vertical reinforcing bar VB is disposed inside the round angle 100, the joining angle 300 joining the end of the round angle 100 and the vertical reinforcing bar VB is provided. That is, a plurality of joining angles 300 are welded to the vertical reinforcing bars VB in advance, and both ends of the joining angles 300 are welded to the round angles 100 to improve the workability.

11, when the reinforcing bar is forced to be inserted into the column despite the fact that the use of the reinforcing bar is excluded, the vertical angle of the vertical reinforcing bar VB is increased by using the connecting angle 300 to the round angle 100 disposed at the corner of the column, The vertical reinforcing bar VB can be effectively fixed when the remaining outer plate 200 is assembled.

As shown in FIG. 12, the side where the bolts are joined and the part where the bolts BM meet, that is, the part fixing the brackets, is fixed by welding the side surfaces as shown in FIG. 12, and the concentrated bolts B ' ) Or rivets.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

100 ... Round Angle 200 ... Outer Plate
300 ... Combined Angle

Claims (9)

Four round angles in which the portions bent at 90 degrees are arched angles and are vertically disposed apart from each other at the corner positions of the columns;
Four outer plates respectively coupled to the outside of the round angles to form an outer surface; And
And an inner reinforcing assembly having a grid-like cross section provided inside the closed column,
The round-
Further comprising a rounded rib which is bent at an angle of 90 degrees in an arc shape at both ends,
Wherein the round angle and the outer plate are made of a metal material,
A pair facing each other is joined by a fastening bolt and a fastening nut,
The other pair facing is joined by welding,
A vertical reinforcing bar disposed inside the round angle; And a coupling angle coupling the end of the round angle to the vertical reinforcement,
The arrangement of the vertical reinforcing bars,
A plurality of joining angles are welded to the vertical reinforcing bars in advance,
And both ends of the joining angle are joined to the round angle by welding. ≪ RTI ID = 0.0 > 11. < / RTI > delete delete delete delete delete delete The method according to claim 1,
Wherein the outer plate comprises:
Wherein an opening is further formed at a position where the composite beam is inserted. ≪ RTI ID = 0.0 > 11. < / RTI > delete

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