JP2005320746A - Steel-frame column - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steel-frame column which can ease structural restrictions on a building with a steel-frame structure, and which can enhance design freedom. <P>SOLUTION: This steel-frame column 1 comprises a core column 11 which is composed of square steel tubes of a hollow cross-section body, and a pair of stiffening columns 12 which are joined to the side surface of the core column 11. The stiffening column 12 is composed of a web 121 and a flange 122, which are orthogonal to each other, and web ends of the respective stiffening columns 12 are connected to the core column 11 in such a manner as to face each other across the material axis of the core column 11. A joining plate 13 is fixed to the upper and lower ends of the core column 11 and those of the stiffening column 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a steel column in a steel structure building.

  Conventionally, in a steel structure building using a pillar of H-shaped steel, the web width is formed to be about twice that of normal H-shaped steel in a portion requiring a large proof stress, not only the edge of the web, In some cases, a large H-shaped steel welded with the ribs orthogonally crossed at the center is used as a column.

  In the case of such a structure using a large H-shaped steel as a pillar, the joining plate for joining the pillars must also have a strength suitable for the large pillars, which complicates the design, There was a drawback of high cost.

  In response to such problems, the present applicant has developed a steel column such as described in Patent Documents 1 and 2 and put it to practical use, thereby increasing the structural strength without using a large H-shaped steel and reducing the cost. Has been reduced.

  In the column structure described in Patent Document 1, a pair of column members made of H-shaped steel are arranged in parallel so that the respective webs are substantially in the same straight line. Then, a plate for joining to the beam is fixed to the flange end face of each column member located at both ends of the parallel state and the flange end face of the portion where both column members are adjacent to each other, and the both column members are joined to each other. It has become the composition.

In addition, the column structure described in Patent Document 2 includes a first column member formed of one column and a second column member in which a web material is fixed to the side surface of the column. These column members are used by joining the first column member and the second column member in series in the linear portion of the wall, and centering on the first column member in the corner portion of the wall. Two second pillar members are joined and used at right angles to each other.
Utility Model Registration No. 2527118 JP 2928832 A

  The present invention was newly developed as the applicant further researched and improved in the above circumstances, and relaxed the structural limitations in steel structure buildings and increased the degree of design freedom. It aims to provide a steel column that can be raised.

  In order to achieve the above object, a steel column according to the present invention includes a core column having a hollow cross-section and a pair of stiffening columns joined to side surfaces of the core column, and the stiffening columns are orthogonal to each other. It consists of a flange, and is characterized in that the web ends of the respective stiffening columns are coupled to the core column so as to face each other across the material axis of the core column.

  Further, in the steel column according to the present invention, in consideration of the arrangement form of the columns in the building, the web ends of the stiffening columns made of the orthogonal web and the flange are orthogonal to each other across the core axis of the core column. It may be combined with the core pillar.

  According to the steel column having such a configuration, the cross-sectional strength in the weak axis direction is increased by the core column and the stiffening column, and the column is difficult to buckle. Therefore, the structural strength as a column can be greatly improved. It is also possible to reduce the number of pillars. In addition, since a pair of stiffening columns are joined together via the core column, this steel column alone can constitute a load-bearing wall with an effective length, and it is rational without creating wasted space. Bearing walls can be placed.

  In the steel column of the present invention, the core column is preferably formed of a square steel pipe or a round steel pipe, and the member strength can be easily secured.

  Moreover, in the steel column of this invention, it is preferable that the joining plate is being fixed to the upper and lower ends of a core column and a stiffening column. Thereby, a steel beam can be easily joined to a floor beam etc., and work efficiency is also improved.

  According to the steel column of the present invention configured as described above, a column having a large structural strength can be formed, and thus the number of columns can be reduced in a steel structure building. In addition, since a pair of stiffening columns are joined together via a core column, it becomes possible to construct a bearing wall with an effective length with this steel column alone, and a reasonable yield strength without waste. Wall placement is possible. In addition, by increasing the structural strength in this way, the steel columns become columns that are difficult to buckle, so it is possible to increase the floor height of the building and increase the column spacing and opening size. Thus, the degree of freedom in design can be significantly improved.

  Hereinafter, the best mode for carrying out a steel column according to the present invention will be described with reference to the drawings.

  1 and 2 show Embodiment 1 of the present invention, FIG. 1 is a plan view of a steel column, and FIG. 2 is a perspective view of the steel column.

  In the steel column 1 according to the illustrated embodiment, reference numeral 11 denotes a core column having a hollow cross section, which is a column material made of a square steel pipe. A pair of stiffening columns 12 are joined to the side surface of the core column 11 to form a steel column 1.

  Each stiffening column 12 is composed of a web 121 and a flange 122 which are orthogonal to each other when viewed from above. And the edge of the web 121 of each of these stiffening columns 12 is welded to the side surface of the core column 11 so as to face each other across the material axis of the core column 11 so as to be integrated with the core column 11. Is formed.

  Joining plates 13 are fixed to the upper and lower ends of the core pillar 11 and the stiffening pillar 12, respectively. The joining plate 13 is welded so that the core pillar 11 is positioned at substantially the center of the plate, and bolt holes 131 used for joining to the beam are formed at a plurality of locations. By providing the joining plate 13 in this way, the steel column 1 can be joined so as to be rigid with respect to the beam. Therefore, by adopting the steel column 1, the structural strength can be greatly improved, and it is possible to configure a load-bearing wall having an effective length with this steel column alone.

  In the steel column 1 of the present invention, the core column 11 and the stiffening column 12 are configured by joining a pair of substantially T-shaped stiffening columns 12 to the side surface of the core column 11 made of a square steel pipe as described above. In addition, for example, as shown in FIG. 3, the web 121 of a pair of stiffening columns 12 is formed continuously and integrally, and the U-shaped channel steel 11a is formed on both sides of a substantially central side surface of the web 121 on both sides. The core pillar 11 may be configured by joining from the above. Moreover, as shown in FIG. 4, the core pillar 11 is comprised with a round steel pipe, or as shown in FIG. 5, the half-round steel 11b is formed in the both sides | surfaces of the stiffening pillar 12 of the shape where the web 121 continued. The core pillar 11 may be configured by bonding.

  Further, as shown in FIG. 6, the joining plate 13 may have a notch 132 formed on the side of the web 121. When the joining plate 13 has such a configuration, for example, when a floor panel such as precast concrete having a mounting plate protruding from the end of the material is joined and fixed on the beam at the joint between the steel column 1 and the beam. It becomes suitable for.

  That is, when the beam to which the steel beam 1 is joined and the floor panel are joined, the mounting plate at the end of the floor panel material is fitted into the notch 132, and the mounting plate is directly installed on the beam and fastened with a bolt or the like. Therefore, it is possible to easily proceed with the operation without causing a problem such as the mounting position of the floor panel being increased by the thickness of the joining plate 13. Here, in FIG. 6, the notches 132 of the joining plate 13 are formed on both sides of the web 121, but when a floor panel is installed only on one side of the web 121, for example, The notch 132 may be formed only on one side.

  FIG. 7 is a plan view showing a second embodiment of the steel beam according to the present invention. Although the steel column 1 of this form is the same as that of the said Example 2 in the point which has the core column 11 of a cross-section hollow body, and a pair of stiffening column 12 joined to the side surface of the core column 11, this stiffening is carried out. It is characterized in that the web ends of the pillars 12 are coupled to the core pillars 11 so as to be orthogonal to each other across the material axis of the core pillars 11.

  That is, in the illustrated embodiment, the steel column 1 is arranged so that the webs 121 of the stiffening columns 12 are perpendicular to each other and joined to the core column 11, and is formed in a substantially L shape in a top view. Also in this steel beam 1, it is preferable that the joining plates 13 are respectively fixed to the upper and lower ends of the core column 11 and the stiffening column 12. And the steel column 1 is comprised in this way, The steel column 1 can be arrange | positioned rationally in the corner part of a building, and the structural strength in a corner part can be raised easily.

  The steel column according to the present invention can be used to increase the structural strength of the column in the steel building and to increase the degree of design freedom.

It is a cross-sectional view of Example 1 in the steel column according to the present invention (cross-sectional hatching omitted). It is a perspective view of the steel column of FIG. It is the modification of the steel column of the said Example 1, and is a cross-sectional view (same as the above) which showed the structure form of the core column and the stiffening column. It is the modification of the steel column of the said Example 1, and is a cross-sectional view (same as the above) which showed the structure form of the core column and the stiffening column. It is the modification of the steel column of the said Example 1, and is a cross-sectional view (same as the above) which showed the structure form of the core column and the stiffening column. It is a cross-sectional view (same as above) showing a modification of the steel column of the first embodiment. It is a cross-sectional view (same as above) of Example 2 in the steel column according to the present invention.

Explanation of symbols

Steel column 1
Core pillar 11
Stiffening column 12
Web 121
Flange 122
Joining plate 13
Bolt hole 131
Notch 132

Claims (5)

It has a core column with a hollow cross-section and a pair of stiffening columns joined to the side surface of the core column,
The steel column is characterized in that the stiffening column is composed of a web and a flange orthogonal to each other, and the web ends of the respective stiffening columns are coupled to the core column so as to face each other across the material axis of the core column. It has a core column with a hollow cross-section and a pair of stiffening columns joined to the side surface of the core column,
A stiffening column comprising a web and a flange orthogonal to each other, and a steel column characterized in that a web end of each stiffening column is coupled to a core column so as to be orthogonal to each other across a material axis of the core column.   The steel column according to claim 1 or 2, wherein the core column is formed of a square steel pipe.   The steel column according to claim 1 or 2, wherein the core column is formed of a round steel pipe.   The steel column according to any one of claims 1 to 4, wherein a joining plate is fixed to upper and lower ends of the core column and the stiffening column.

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