JP2845365B2 - Column and beam joint structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a joint structure between a column and a beam having a steel structure. [Prior Art] FIGS. 4 and 5 show a conventional joint structure between a column and a beam having a steel structure. The upright column 1 in both figures is formed by a steel pipe having a closed cross section of a square cross section,
A thin steel plate 3 is joined and fixed to each of the portions of the beam 2 made of H-shaped steel, which are opposed to the upper and lower flanges 2a and 2c, by welding. Then, the upper and lower flanges 2a, 2c of the beam 2 and the thin steel plate 3 are joined and fixed by welding. The web 2b of the beam is directly welded and fixed to the outer peripheral surface of the column 1 made of a steel pipe. According to the above configuration, during an earthquake or a storm, for example, the stress generated in the upper and lower flanges 2a, 2c of the beam 2 is applied via the thin steel plate 3 to the column 1 and / or the upper and lower flanges 2a, 2 of the beam 2 on the other side.
to c. [Problems to be Solved by the Invention] In the conventional column-to-beam joint structure, concrete is filled inside the column 1 or outside the column 5 in order to increase the strength performance of the columns 1 and 5. There is a way to do that. In this case, in the structure shown in FIGS. 4 and 5, since the thin steel plate 3 is provided across the column 1, there is a problem that concrete cannot be poured into the column 1 having a closed cross section. is there. Also, even if a part of the pillar 1 is provided with an injection hole and concrete is filled, the concrete in the pillar 1 is discontinuous in the axial direction of the pillar 1 due to the thin steel plate 3. In other words, in the conventional joint structure between a column and a beam, concrete cannot be easily cast inside the column,
In addition, since the cast and filled concrete becomes discontinuous in the axial direction of the column, the effect of transmitting the stress is lacking, and there is a problem that an increase in vibration resistance cannot be expected to improve the performance of the column. The present invention solves the above-mentioned problems in the prior art, is relatively simple, and has a joint structure between a column and a beam that allows concrete to be poured when the concrete is to be poured into the column. The purpose is to provide. [Means for Solving the Problems] In order to solve the problems existing in the prior art, in the first invention, first, the columns of the lower floor are sequentially joined to the upper floor, and concrete is filled inside the columns. In the joint structure between the column made of steel and the beam made of H-section steel,
A pair of joining members each having a thickness larger than the thickness of the upper and lower flanges of the beam and having a substantially L-shaped vertical cross section and having a through hole in the center are opposed to the upper and lower flanges of the beam, and their inner dimensions. Are provided integrally with a part of the column with the large end faces facing each other, and the outer periphery of the joining member and the upper and lower flanges of the beam are integrally fixed by welding. Next, in the second invention, in a joint structure between a column made of a steel material and a beam made of an H-shaped steel, which is joined to an upper story in order from a lower story column and filled with concrete inside the pillar, A pair of joining members formed to have a thickness greater than the thickness of the upper and lower flanges and provided with a through hole at the center are provided integrally with a part of the column so as to face the upper and lower flanges of the beam. A technical means is adopted in which a groove and / or a backing portion for welding and joining are provided at the portion, and the outer periphery of the joining member and the upper and lower flanges of the beam are integrally fixed by welding. In the above invention, the column can be a steel tube column having a closed cross section. Further, in the above invention, the planar outer contour of the joining member can be any one of a circle, a square, a rectangle, and a polygon. Further, in the above invention, the planar outline of the through hole provided in the joining member can be any one of a circle, a square, a rectangle, and a polygon. [Operation] With the above configuration, the stress generated in the flange of the beam is transmitted to the column and other beams via the joining member, and when the concrete is to be poured into the interior of the column, the concrete is continuous in the axial direction of the column. There is an action that can be done. [Embodiment] FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the invention described in claim 1, and the same parts are indicated by the same reference numerals as in FIGS. 4 and 5. . In FIG. 1, each of the pair of joining members 63 and 64 has a vertical sectional shape of substantially L-shape, and is disposed with their end faces having large inner dimensions facing each other. That is, step portions 63b, 6 having inner dimensions larger than through holes 63a, 64a provided in joining members 63, 64.
4b is provided, and the steps 63b and 64b are arranged to face each other. With the above configuration, even when the concrete 7 is filled in the column 1, the concrete 7a between the joining members 63 and 64 can be used.
Form a state restrained by the step portions 63b and 64b. Therefore, in the event of an earthquake, etc., the column facing the beam 2
Even if 1b attempts to transform its vertical cross-sectional shape into a parallelogram, the concrete 7a constrained by the steps 63b, 64b and the column 1b resists the above-described deformation, and thus the rigidity of the entire column 1 is improved. There is. FIG. 2 and FIG. 3 are longitudinal sectional views of an essential part showing an embodiment of the invention described in claim 5. First, in FIG. 2, a through hole 65a is formed in a pair of joining members 65, and a groove 65b for welding and a backing are provided in a portion corresponding to each end of the columns 1a, 1b and 1c to be joined. A part 65c is provided. In FIG. 3, a groove and a backing portion are provided only in a portion facing the beam 2, that is, only in a portion welded to the column 1b. That is, the through hole 66 is formed in the welding member 66.
a, and a groove 66b for welding joining only on the column 1b side
And the backing portion 66c. With the above configuration, it is not necessary to form the groove and the backrest on the pillars 1a, 1b and 1c or the pillars 1a and 1c, which are required in the prior art. Significant reduction is possible. In the present embodiment, the cross section of the steel pipe column having the closed cross section is an example of a square, but may be a circle, a rectangle, or a polygon. Furthermore, other geometrical shapes such as a rectangle, a polygon, etc., besides a circle and a square can be applied to the planar outer contour and the through-hole contour of the joining member, and the planar outer contour and the through-hole contour are different shapes. Is also good. [Effects of the Invention] Since the present invention has the configuration and operation as described above, the following effects can be expected. (1) Since there is almost no obstacle in the axial direction of the pillar, it is extremely easy to cast concrete,
There are no cavities or other defects, and the quality can be improved. (2) Since the concrete poured into the interior of the column is continuous in the axial direction of the column at the joint, the transmission of stress becomes extremely smooth, and the rigidity of the joint between the column and the beam can be increased, and the entire building Can greatly improve the earthquake resistance. (3) Even when the columns of the upper and lower floors have different cross-sectional dimensions, the column member of the connecting portion has a simple shape, so that the number of processing steps of the column beam joint can be significantly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 3 are longitudinal sectional views of a main part showing first to third embodiments of the present invention, respectively. FIG. 4 and FIG. It is the principal part longitudinal cross-sectional view and the same horizontal cross-sectional view which show a part structure. 1: pillar, 2: beam, 3: thin steel plate, 63, 64, 65, 66: joining member, 63
a, 64a, 65a, 66a: Through hole, 7: Concrete

Claims (1)

(57) [Claims] In the joint structure between a column made of a steel material and a beam made of H-section steel, which is joined to the upper floor in order from the lower floor and filled with concrete inside the column, the thickness is larger than the thickness of the upper and lower flanges of the beam. A pair of connecting members having a substantially L-shaped vertical cross section and a through hole in the center are opposed to the upper and lower flanges of the beam and their end faces having large inner dimensions are opposed to each other. A joint structure between a column and a beam, wherein the outer periphery of the joining member and the upper and lower flanges of the beam are integrally fixed by welding. 2. The joint structure between a column and a beam according to claim 1, wherein the column is a steel tube column having a closed cross section. 3. 3. The joint structure between a column and a beam according to claim 1, wherein the planar outer contour of the joining member is any one of a circle, a square, a rectangle, and a polygon. 4. 4. The joint structure between a column and a beam according to claim 1, wherein a planar contour of the through hole provided in the joining member is any one of a circle, a square, a rectangle, and a polygon. 5. In the joint structure between a column made of a steel material and a beam made of H-section steel, which is joined to the upper floor in order from the lower floor and filled with concrete inside the column, the thickness is larger than the thickness of the upper and lower flanges of the beam. A pair of joining members formed at the center and provided with a through hole in the center are respectively provided integrally with a part of the column so as to face the upper and lower flanges of the beam, and a groove portion for welding joining is provided on at least a part of the outer periphery of the joining member And / or backing part,
A joint structure between a column and a beam, wherein the outer periphery of the joining member and the upper and lower flanges of the beam are integrally fixed by welding. 6. The joint structure between a column and a beam according to claim 5, wherein the column is a steel tube column having a closed cross section. 7. 7. The joint structure between a column and a beam according to claim 5, wherein the planar outer contour of the joining member is any one of a circle, a square, a rectangle, and a polygon. 8. The joint structure of a column and a beam according to any one of claims 5 to 7, wherein a planar contour of the through hole provided in the joining member is any one of a circle, a square, a rectangle, and a polygon.