JPH0941564A - Steel built-up post and post/beam joint structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer stress clearly and smoothly and facilitate working or assembling and manage the reduction in the amount of a lattice material to be used. SOLUTION: Four main column materials 2 are laid out so that a large beam axis L may be positioned at each vertex of a virtual square S which forms a diagonal line. Lattice materials 3 are joined with two column main materials each of which is located on their respective diagonal lines between both column main materials 2. The lattice material comprises reinforced round bars and so forth and formed with one member whose oblique lines 3a are continued like a flash of lighting or zigzag in shape. The beam is directly joined with one column main material 2 not by way of a main material-to-main material joint material or the like.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a steel frame assembly column applied to a steel frame building such as a warehouse, a store, a factory, a meeting place, etc.
And a column-beam joint structure in which a lattice beam is joined to the steel frame assembly column.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 10, an assembled column using four main members made of steel pipe has been generally used. This is one in which four main members 31 each made of a steel pipe are arranged side by side in a quadrangular shape, and a lattice member 32 made of a steel pipe is welded between adjacent main members 31, 31. The beam 33 formed of a lattice beam includes an upper chord member 33a and a lower chord member 33b.
The lattice member 33c is joined between the two, and it is a planar member and is located in the middle of the two pillar main members 31, 31 of the assembly pillar 30.
Therefore, two adjacent pillar main members 3 are attached to the assembled pillar 30.
Inter-main-member joining member 34 such as a plate joined between 1 and 31
The upper chord member 33a and the lower chord member 33b of the beam 33 are joined to each other through.

[0003]

However, the above-mentioned structure has the following problems. a). Since the beam 33 is joined in the middle of the two adjacent pillar main members 31, 31, it is necessary to join through the inter-main member joining member 34, and the beam 33 to the pillar main member 31 of the assembled column 30 The transmission of stress is not clear. Therefore, in order to secure the strength, it is necessary to design with a large margin, and many members are wasted. b). Since a steel pipe is used as the lattice member 32 of the assembled column 30, the tip of the lattice member 32 must be processed into a shape that matches the outer shape of the column main member 31 in order to join it to the column main member 31 made of a steel pipe. . In addition, the lattice material 32 must be welded to the main pillar material 31 at a predetermined inclination angle, which requires high technology for processing and welding and is difficult to perform. Lattice material 3
A sophisticated processing machine is also required for the above-mentioned tip processing of 2. c). A large number of lattice members 32 are provided, but these must be joined to the column main member 31 one by one, which makes machining and welding more complicated. d). The lattice member 32 is provided on each of the four side surfaces of the outer periphery of the assembly column 30, so that the amount of use increases and the cost of members increases.

The present invention solves the above-mentioned problems, and the stress transmission from the beam to the column is smooth, the processing and assembly are easy, and the steel frame assembly column and its column are easy to process and assemble. An object is to provide a beam joint structure.

[0005]

According to the steel frame assembly pillar of the present invention, four pillar main members are arranged at respective vertices of a virtual quadrangle whose cross axis is a diagonal direction, and the pillar main members are arranged diagonally to each other. For each set of pillar main materials, a lattice material is joined between both pillar main materials. This lattice material has a shape in which a plurality of hypotenuses are continuous like a lightning bolt. Round steel may be used for the lattice material. A steel pipe may be used as the pillar main material. The column-beam joint structure of the present invention uses the above-mentioned steel frame-assembled column and joins the upper chord member and the lower chord member of the lattice beam to the same main column member.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIGS. This steel frame assembly pillar 1
Is the four pillar main members 2 arranged at the respective vertices of a virtual quadrangle S (FIG. 1) such as a square whose axis L of the girder 5 (FIG. 3) joined to the pillar 1 is a diagonal direction, For each pair of two pillar main members 2 and 2 located diagonally to each other, both pillar main members 2,
The lattice material 3 is joined between the two. As the lattice material 3, one member in which a plurality of hypotenuse parts 3a are continuous in a lightning bolt shape is used. Here, a round steel pipe is used as the pillar main material 2, and a round steel such as a reinforcing bar is used as the lattice material 3. The lattice member 3 is joined to the pillar main member 2 by welding the vertical portion 3b formed between the hypotenuse portions 3a, 3a to the surface of the pillar main member 2. The length of the vertical portion 3b is set such that the axial extension lines of the upper and lower hypotenuse portions 3a, 3a intersect at the column core of the column main member 2. The vertical portion 3b of the lattice material 3 may be welded to the column main material 2 with another short reinforcing bar along both sides or one side. Lattice material 3 joined between a pair of facing column main members 2 and 2 and lattice material 3 joined between another pair of facing column main members 2 and 2 are lightning-shaped parts. The pitches are arranged so as to deviate from each other by half a pitch so that the two lattice members 3 can intersect at a right angle without interfering with each other. In the work of joining the lattice material 3 to the pillar main material 2, 2
The lattice members 3, 3 are made to intersect each other, and the lattice member 3 is joined to one set of column main members 2, 2 and then left between another set of column main members 2, 2. The procedure is to join the lattice members 3. As shown in FIG. 2 (A), in the steel frame assembled column 1 of this example, the band members 4 surrounding the outer periphery thereof are joined to each column main material 2 at predetermined height positions by welding, whereby the entire column main material is formed. The two are integrated. Band member 4
For example, round steel is used.

FIG. 3 shows an example of a joint structure for joining the girder 5 to the steel frame assembly column 1. The girder 5 of this example is a lattice beam formed by joining a lattice member 8 of a round steel pipe between an upper chord member 6 and a lower chord member 7 of the round steel pipe. Gusset plates 9 and 10 having bolt insertion holes for joining to the steel frame assembly column 1 are fixed to the ends of the upper chord member 6 and the lower chord member 7 by welding. In each pillar main member 2 on the diagonal line of the steel frame-assembled column 1 that overlaps the axis L of the girder 5, bolts for joining the girder 5 are provided at positions corresponding to the heights of the upper chord member 6 and the lower chord member 7 of the girder 5. Gusset plates 11 and 1 having insertion holes
2 is fixed by welding. Corresponding gusset plates 9 and 10 on the girder 5 side are superposed on the gusset plates 11 and 12 on the column 1 side and joined by bolts 13. As a result, the upper chord member 6 and the lower chord member 7 of the girder 5 are joined to the same main pillar material 2 of the steel frame assembly pillar 1 via the gusset plates 9 to 12. In addition, each pillar main material 2 of the steel frame assembly pillar 1,
It is erected on the column base 20 via a base plate.

According to this column-beam joint structure, the axis L of the girder 5 is aligned on the diagonal line of the steel-frame-assembled column 1, and the girder 5 is directly attached to the column main member 2 without interposing a main-member joining member or the like. Since they are joined, the stress transmission from the girders 5 to the columns 1 is clear and smooth. Therefore, the strength design can be performed clearly, and the minimum necessary number of members can be used. In this steel frame assembly column 1, the lattice material 3 is continuous in a lightning bolt shape, and the vertical portion 3
Since b is welded to the pillar main material 2, there are few welding points, a simple welding method can be adopted, and the welding work is easy. In addition, each oblique side portion 3a of the lattice material 3 has a tip processing or groove processing for welding. Does not need to be performed, and processing is easy. Further, in this steel frame assembly column 1, since the lattice member 3 is joined between the column main members 2 and 2 which are diagonally located to each other, compared to the conventional one in which the lattice members are joined to the four side surfaces of the outer periphery. The total amount of lattice material 3 used is small. For example, assuming that each pillar main member 2 is located at each vertex of a square having a length of one side (length between pillar cores) A, when a lattice material is joined around the pillar as in the conventional example. The amount of lattice material used is 4Aα
(Α is the ratio of the length between the column outer surfaces to the length between the column cores), the amount of the lattice material 3 used in this steel frame assembly column 1 is 2√2A
α (≉2.8 Aα), which is a great saving in materials.

FIG. 4 is a horizontal sectional view showing a second embodiment of the steel frame assembly column of the present invention. In this example, two round steels arranged in parallel are used as the lattice members 3 of the steel frame assembly column 1. Other configurations are the same as those in the first embodiment.

FIG. 5 is a horizontal sectional view showing a third embodiment of the steel frame assembly column of the present invention. In this example, a square steel pipe is used as each column main material 2 of the steel frame assembly column 1. Other configurations are the same as those in the first embodiment. In this case, since the surface of the column main material 2 to which the lattice material 3 is joined is a flat surface, welding of the lattice material 3 to the column main material 2 becomes easier.

FIG. 6 is a horizontal sectional view showing a fourth embodiment of the steel frame assembly column of the present invention. In this example, channel steel is used as each column main material 2 of the steel frame assembly column 1. Each channel steel is installed inward. Other configurations are the same as those in the first embodiment. In this case as well, the surface of the pillar main material 2 to which the lattice material 3 is bonded is a flat surface, so that the lattice material 3 to the pillar main material 2 is formed.
Welding is even easier.

FIG. 7 is a horizontal sectional view showing a fifth embodiment of the steel frame assembly column of the present invention. In this example, H-section steel is used as each pillar main material 2 of the steel frame assembly pillar, and two round steels arranged in parallel are used as each lattice material 3. Other configurations are the same as those in the first embodiment. Also in this case, since the surface of the column main material 2 to which the lattice material 3 is joined is a flat surface, the welding of the lattice material 3 to the column main material 2 becomes easier.

FIG. 8 is a horizontal sectional view showing a sixth embodiment of the steel frame assembly column of the present invention. In this example, a rectangular steel pipe is used as each pillar main material 2 of the steel frame assembly pillar 1, and a flat steel bent into a lightning bolt shape is used as a lattice material 3. Other configurations are the same as those in the first embodiment. In this case, since the surface of the pillar main material 2 for joining the lattice material 3 is a flat surface and the lattice material 3 is also a flat member, the welding of the lattice material 3 to the pillar main material 2 becomes easier. .

FIG. 9 shows a lattice beam 15 constructed by applying the joining structure of the column main material 2 and the lattice material 3 in the steel frame assembly column 1. The lattice beam 15 includes a plurality of hypotenuse parts 18a between an upper chord member 16 and a lower chord member 17 made of a round steel pipe.
Is a lattice member 18 made of a single round steel that is continuous like a lightning bolt. Also in this case, the extension lines of the axial centers of the adjacent oblique side portions 18a of the lattice members 18 are the upper chord members 16a.
Alternatively, it is set so as to intersect on the axis of the lower chord member 17. With this configuration, it is possible to obtain a lattice beam that is easy to weld and work.

[0015]

EFFECTS OF THE INVENTION The steel-frame-assembled column of the present invention has four column main members arranged at the respective vertices of a virtual quadrangle with the girder axis in the diagonal direction, and two sets of column main members located diagonally to each other. For each set of timber, a lattice material is joined between the main materials of both pillars, and since the multiple hypotenuses of this lattice material are continuous in a lightning pattern, the stress transmission from the beam to the pillar is smooth and clear, and the lattice material is Is easy to process and assemble, and the amount of lattice material used is small, resulting in cost reduction. The column-beam joint structure of the present invention is a column-beam joint structure using the above-mentioned steel frame-assembled column, and since the upper chord member and the lower chord member of the lattice beam are joined to the same column main member, the column main member for beam joining No inter-joining member is required, the stress transmission from the beam to the column is smooth and clear, and the beam can be firmly joined to the column with a simple joining structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a steel frame assembly column of the present invention.

FIG. 2 (A) is a horizontal sectional view of the same steel frame assembly column, and FIG. 2 (B) is a front view thereof.

FIG. 3A is a horizontal cross-sectional view showing a column-beam joint structure in which a lattice beam is joined to the same steel frame assembled column, and FIG. 3B is a front view thereof.

FIG. 4 is a horizontal sectional view showing a second embodiment of the steel frame assembly column of the present invention.

FIG. 5 is a horizontal sectional view showing a third embodiment of the steel frame assembly column of the present invention.

FIG. 6 is a horizontal sectional view showing a fourth embodiment of the steel frame assembly column of the present invention.

FIG. 7 is a horizontal sectional view showing a fifth embodiment of the steel frame assembly column of the present invention.

FIG. 8 is a horizontal sectional view showing a sixth embodiment of the steel frame assembly column of the present invention.

9A is a vertical cross-sectional view of a lattice beam constructed by applying the structure of a steel frame assembly column of the present invention, and FIG. 9B is a front view thereof.

10A is a horizontal sectional view of a conventional example, and FIG. 10B is a front view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Steel assembly column, 2 ... Column main material, 3 ... Lattice material, 3a ... Inclined part, 5 ... Large beam (lattice beam), 6 ... Upper chord material, 7 ... Lower chord material, 8 ... Lattice material, L ... Large beam axis, S ... Virtual quadrangle

Claims (4)

[Claims] 1. A column main member having four pillar main members arranged at respective vertices of an imaginary quadrangle whose diagonal axis is a diagonal direction, and two column main members are provided for each pair of two pillar main members positioned diagonally to each other. A steel-framed pillar that is made by joining lattice materials between the lumber, and the hypotenuses are continuous in a lightning bolt pattern. 2. The steel frame assembly column according to claim 1, wherein the lattice material is round steel. 3. The steel frame assembled column according to claim 1, wherein the column main material is a steel pipe. 4. A pillar using the steel frame assembly pillar according to claim 1.
A beam-to-beam connection structure in which the upper and lower chord members of a lattice beam are joined to the same main pillar material.