JP2002038586A - Increased thickness reinforcement type column-beam joint portion and square type column having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a square type column combined with the combinations of various kinds of columns fitted to a column to beam joint portion in which the structural type for jointing a beam to the column to beam joint portion and the range of increased thickness can be set thereby determining the column to beam joint portion of the increased thickness reinforcing type can be established. SOLUTION: An increased thickness reinforcing type column to beam joint portion 21 and a square type column 20 of the present invention have coordinates with a width to thickness ratio B/t of the diaphragm reinforcing type column to beam joint portion 2A and a width to thickness ratio B/ti of the increased thickness and reinforced column to beam joint portion 21 as the axis of coordinates on which a width to thickness ratio of a plurality of design values of the column to beam joint portion of the diaphragm type reinforcing type and the width thickness ratio of the column plate thickness ti of the increased thickness reinforcement type column to beam joint portion 21 calculated from the correlation from the existing design values are plotted, structural types of respectively different beam joints are fitted to the first zone restricted by a vertical axis of coordinates and the increased thickness limit line and the second zone restricted by the increased width limit line, and the increased thickness reinforcing type column to beam joint portion 21 is configured in each zone. Also, the range jL of the increased thickness portion of the column to beam joint portion 21 is made larger than (beam depth H+0.2 column width B×2) and the raw pipe portion 22 of the column is welded at the to and bottom and a square column 20 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam-column joint for joining beams by increasing the thickness of a column of a rectangular column, the beam joint structure type can be selected from the width-to-thickness ratio, and the beam strength is high. The present invention relates to a thickened reinforcing beam-to-column joint and a square column having the same, wherein the thickened portion range of the beam-to-column joint can be set from a thickness increasing ratio.

[0002]

2. Description of the Related Art Conventionally, as this kind, for example, the one shown in FIG. 14 is generally known.

[0003] As shown in FIG. 14, a joint 2A between a column 1 and beams 2 and 3 of the structure is reinforced by an inner diaphragm 4 or a through-diaphragm (not shown) to form a rigid joint. The design has been done.

In this structure 10, a large number of processing steps and a large amount of welding are required for mounting the diaphragm 4. Further, when beams 2 and 3 having different beams H1 and H2 are joined, the column-beam joint 2A is more complicated and requires more processing man-hours.

Further, concrete filled columns (hereinafter referred to as CFT)
In this case, an opening is provided in the diaphragm 4, but the flow of the concrete filled in the opening is obstructed, and there is a possibility that voids are generated and the strength is reduced.

[0006]

Therefore, the diaphragm 4 is omitted, and the strength of the diaphragm 4 is increased by increasing the thickness of the column plate at the column-beam joint 2A, thereby improving the out-of-plane bending strength of the column surface. Structured structures began to be used.

However, in the beam-to-column joint where the diaphragm 4 is omitted, the thickness is increased in proportion to the ratio between the column width B and the column plate thickness t of the conventional diaphragm-reinforced beam-to-column joint 2A. The correlation between the column width and column thickness ratio of the reinforced beam-column joints was not accurately captured. Therefore, there is a problem that it is not possible to select a structure type in which the beam is joined to the beam-column joint in accordance with the width-thickness ratio of the column.

There is also a problem that the range of the thickened portion is not always suitable for the proof stress.

In view of this, the present invention provides a structure in which a beam is joined to a beam-to-column joint and the range of the thickened portion can be set, and a thickened reinforcing beam-to-column joint is determined. It is an object of the present invention to provide a rectangular column formed by combining various columns suitable for a part.

[0010]

Means for Solving the Problems In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that, in the column-beam joint of the thickening reinforcement type, the structural form is a pure ramen structure, and the planar form is In a rectangular prism having a shaped structure, the width and thickness ratio of a beam-to-column joint reinforced with a diaphragm and the width-to-thickness ratio of a beam-and-column joint reinforced with a thickness are coordinated with coordinate axes, and a plurality of reinforced with the diaphragm are used. The thickness-to-thickness ratio of the beam-to-column joints of the pre-designed values, and the thickness-reinforcement type column-and-beam calculated by calculating the column thickness so as to be the beam precedent yield by correlating from the plurality of pre-designed values by the yield line theory While plotting the width-to-thickness ratio of the joint,
In the coordinates, draw a thickening limit line when increasing the thickness of the column plate of the beam-column joint, a first zone regulated by the thickening limit line and the ordinate axis, and the amplification limit line The present invention is characterized in that a different beam joint structure type is adapted to the second zone regulated by the abscissa axis to form a column-beam joint for each zone.

[0011] In such a structure, two zones are provided at the boundary of the increase in the thickness of the column plate, and the structural form of the beam-column joint is adapted to each zone. It is possible to set a beam-to-column joint structure that is worth the cost.

Here, the column and beam are columns or beams formed by extruding column-shaped or H-shaped extruded steel made of structural steel. Further, a rolled steel plate may be assembled and welded into a tubular shape having a rectangular cross section to form an assembling column, or a rolled steel plate may be assembled and welded to an H-shaped cross section.

In the calculation of the total plastic strength of the beam-column joint, the same value is used for the yield point of the material.

According to a second aspect of the present invention, in the thickening reinforcing column-beam joint section according to the first aspect, the thickness increase limit of the column-beam joint section is determined by the thickness of the prismatic column. In addition to drawing the thickness increase line as twice, the beam joining structure of the first zone is a direct connection joining type in which a beam is directly joined to the beam-to-column joint, and the beam-to-column joint of the second zone is A horizontal haunch beam joint structure type in which a horizontal haunch is provided on the beam of the present invention is characterized.

In such a case, since the thickness increase limit line is set to twice the thickness of the columnar plate, even if the thickness cannot be increased more than twice in the second zone exceeding twice, even if the thickness cannot be increased twice or more, By providing a horizontal haunch and welding it, the strength of the beam-column joint can be ensured.

According to a third aspect of the present invention, in the thickened reinforcement type beam-column joint according to the first or second aspect, the thickened area of the thickened reinforcement type beam-column joint is a beam. The column width, which is 0.2 times as the both thickened extension from the upper and lower beam flanges,
It is characterized by being added above and below the beam.

In such a case, since the thickened extension portions are defined and provided above and below the beam flange, the strength of the beam-column joint can be improved.

According to a fourth aspect of the present invention, in a rectangular column having a thickened reinforcing column-beam joint, the column-beam joint is formed by welding the column-beam joint and the column base tube. In the welded portion where the assembly column and the column tube assembly column are brought into contact in the vertical direction, the staggered dimension of the welding surfaces that contact each other is 10 mm or less.

In such a case, since the staggered dimension of the welded portion is set to 10 mm or less, the joint between the column-beam joint and the column base tube can be integrally welded, so that the load can be reduced. Transmission can be performed reliably.

According to a fifth aspect of the present invention, in the rectangular column having the thickened reinforcing column-beam joint according to the fourth aspect, the column-beam joint and the column base tube are welded to each other. In the welded portion to form the prismatic column, the cold column for the beam-column joint and the cold column for the column tube section abut vertically.
The misalignment dimension of the corner R of the welding surface to be abutted is 10
mm or less.

In such a structure, the staggered dimension of the welded portion is set to 10 mm or less, so that the cold column for the beam-column joint and the cold column for the column base tube are integrated. Welding can be carried out, and the load can be transmitted reliably.

According to a sixth aspect of the present invention, in the rectangular column having the thickened reinforcing column-beam joint according to the fifth aspect, the thickness of the cold column for the column-beam joint is 22, 25. ,
The corner portions R are formed as 28, 32, 36, and 40 mm, and the plate thickness of the cold column for the column tube section to be brought into contact with these cold columns is 19, 19 in this order.
~ 22,22 ~ 25,28,32,36mm.

In such a case, the corner R to be brought into contact with the assembling column for the beam-column joint and the assembling column for the column pipe section is provided.
Is set, a combination that can be brought into contact integrally can be easily selected.

According to a seventh aspect of the present invention, in the rectangular column having the thickened reinforcing column-beam joint according to the fourth aspect, the column-beam joint and the column base tube are welded to each other. In a welded portion where a hot column for a beam-to-column joint and a cold column for a column tube section are vertically contacted to form a prismatic column, a misalignment dimension of a corner R of a welding surface to be contacted with each other. Is 10 mm or less.

In such a case, since the staggered dimension of the welded portion is set to be 10 mm or less, the space between the hot column for the beam-column joint and the cold column for the column tube portion is reduced. Welding can be performed integrally, and load transmission can be performed reliably.

According to an eighth aspect of the present invention, in the rectangular column having the thickened reinforcing column-beam joint according to the seventh aspect, the plate thickness of the hot column for the beam-column joint is 22, 25. ,
28, 32, 36, 40, 50, 60 mm and corner R
And the plate thicknesses of the cold columns for the column tube section to be brought into contact with the hot columns are set in this order to 19, 19, 19 to 22, 19 to 25, 19 to 28,
19 to 28, 22 to 36, 28 to 40 mm.

In such a case, a corner portion R at which the assembling column for the beam-column joint and the assembling column for the column tube section are brought into contact.
Is set, a combination that can be brought into contact integrally can be easily selected.

According to a ninth aspect of the present invention, in the rectangular column having the thickened reinforcing column-beam joint according to the fourth aspect, the column-beam joint and the column base tube are welded to each other. In the welded part which forms the prismatic column, the welding column for vertically contacting the assembling column for the beam-column joint where the steel plate is assembled in a substantially cross-sectionally square tubular shape and the cold column for the column base tube part, It is characterized in that a plurality of tapered portions are provided so that the staggered dimension between the outer corner, the inner corner, and the inner side of the corner is 10 mm or less in the state of being flush.

In such a case, the staggered dimension of the welded portion is set to 10 mm or less, so that the assembly column for the beam-column joint and the cold column for the column base tube are integrated. Welding can be carried out, and the load can be transmitted reliably.

The invention described in claim 10 is the fourth invention.
In the prismatic column having the beam-to-column joint of the thickening reinforcement type according to the above, the column-to-beam joint and the column base tube are welded to form the prismatic column, and a steel plate is assembled into a tube having a substantially rectangular cross section. In addition, at the welded portion where the assembling column for the beam-to-column joint and the assembling column for the column pipe section are vertically abutted, the misalignment dimension on the inner surface side is 10 mm or less with the outer method being flush. The tapered portion is formed so as to be processed as follows.

In such a case, since the staggered dimension of the welded portion is set to 10 mm or less, the assembly column for the beam-column joint and the assembly column for the column tube section are integrated. Welding can be carried out, and the load can be transmitted reliably.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION

[0033]

[Embodiment 1] An explanation will be given based on FIGS. 1 to 6 showing a thickened reinforcement type beam-column joint according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 20 denotes a prismatic column, 21 denotes a thickened reinforcing beam-to-column joint, and beams 31 and 32 conforming to the beam-to-column joint 21 are joined. The column base tube portion 22 is welded and joined in the vertical direction via the portion 24 to form the prism 20.

Reference numeral 23 denotes a thickened portion in which the thickness of the column plate is increased inward. The ends of the thickened portion 23 are vertically oriented toward the column plate thickness of the column base tube portion 22. It is processed into a tapered shape so as to have the same thickness, and is welded to the column base tube portion 22.

Furthermore, the beam-to-column joint 2 reinforced by thickening
1, a horizontal haunch 33 is provided on a directly connected beam 31 or a beam flange 31a at an end of the directly connected beam 31, and a horizontal haunch beam 32 provided substantially in a column width is integrally formed via corner welds 31b and 32b, respectively. We are trying to weld and join.

The rectangular prism 20 may be formed by using a long column base tube portion 22 and forming a plurality of thickened portions 23 at predetermined intervals in the middle thereof.

In the thickened reinforcing column-beam joint 21 shown in FIG. 2, B is the column width, t is the column plate thickness of the column base tube portion 22, and ti
Denotes the thickness of the column plate of the amplification section 23 of the beam-column joint 21.

H is the beam, and iL is the beam 31 (3
2) indicates a thickened extension part which is a dimension from the beam flange 31a (32a) to the end of the thickened part 23, and it is sufficient if the column width B is 0.2 times or more from its proof strength ( See FIG. 6).

Therefore, the thickened reinforcing beam-column joint 21
The range jL of the thickened portion is the thickened extending portion iL from the upper and lower beam flanges 31a (32a) of the beam 31 (32).
2B is added above and below the beam H. This can be expressed by the following equation: jL ≧ H + 0.2B × 2.

In the first embodiment of the present invention,
B is the required column plate thickness ti of the beam-column joint 21 when the column plate thickness t of the column base tube portion 22 is set to 19 to 40 mm with the dimension of 550 to 750 mm.

Referring to FIG. 3, a description will be given of a structural form in which a beam can be joined to the thickened reinforcing column-to-beam joint 21 with a predetermined strength.

In FIG. 3, the prism 2 of the already designed structure
0, column-to-column joint 2A reinforced with diaphragm 4
The design value obtained by calculating the ratio B / t (hereinafter referred to as the width-thickness ratio) between the column width B and the column plate thickness t (see FIG. 14) and the beam flange 31
a, the thickness t of the column plate thickness increased by fixing the thickened extension iL from 150a to 150 mm and correlating it by yield line theory
i is calculated, and the column thickness ti increased at this time and the column width B
, And the calculated value of the width-thickness ratio B / ti is converted into coordinates so that the beam yields first.

Then, on this coordinate, an amplification limit line of 2t, which is a limit value of the increase of the thickness t of the column plate, is B / ti = 0.5.
B / t... Are overlapped, and a beam joint structure type is set that is adapted to the first zone α regulated by this line and the ordinate axis and the second zone β regulated by the abscissa axis, and the thickness is increased. The reinforcing column-beam joint 21 is formed.

That is, in the first zone α, FIG.
(A) As shown in FIG.
The beam 31 is directly connected to the structure.
In the zone β, as shown in FIGS. 5A and 5B, the horizontal haunch 33
The horizontal haunch beam joining structure type to be provided and joined is set respectively.

Therefore, if it is confirmed in which of the first and second zones α and β the width / thickness ratio B / ti of the newly designed column-to-beam joint 21 is located, the beam joint can be determined. It is possible to set the structure format.

Here, the thickened reinforcing column-beam joint 2
The column plate thickness ti of 1 is a width-to-thickness ratio B / t (see FIG. 14) of a beam-column joint 2A reinforced with a diaphragm, with a beam joint structure of a pure ramen structure and a planar shape, and a yield line. It is calculated by correlation from the plurality of designed values according to the theory.

The yield points of the rectangular column 20 and the beams 31 and 32 are set to the same value, and the total plastic strength of the beam-column joint 21 is set to be the beams 31 and 3 so that the beam collapses.
2, which is 1.1 or more of the total plastic proof stress.

Next, the range jL of the thickened portion in the beam-column joint 21 will be described with reference to FIG.

In FIG. 6, the ordinate axis is the ratio of the total plastic strength (iL strength) of the column-to-beam joint to the total plastic strength (iL 力 proof strength) when the column thickness of the entire length of the column is increased. iL∞proof strength / iL strength), and the abscissa axis is the beam flange 31.
a to the end of the thickened portion 23.
The ratio of L to the column width B of the beam-column joint 21 is iL / B.

When the column thickness t of the prismatic column 20 is increased to 1.25 t as the increased column-beam joint 21, the proof stress at iL / B = 0 is equal to the total of iL∞. The plastic proof stress is 0.85, and as the column plate thickness ti increases, iL /
Although the total plastic proof stress ratio at B = 0 decreases, as iL / B increases, the rate of increase of the total plastic proof stress ratio increases with the column plate thickness ti.
It grows bigger as it gets thicker.

As an example, assuming that iL = 150 mm, the total plastic strength of the beam-column joint 21 was calculated.
It was found that the proof stress was sufficiently ensured, and the abscissa value iL / B at this time was calculated to be a value of 0.2 to 0.27. If iL / B was 0.2 or more, it was put to practical use. It turns out that it becomes proof stress.

[0053]

Embodiment 2 A description will be given based on FIGS. 7 to 13 showing a square pillar having a thickened reinforcing column-beam joint according to a second embodiment of the present invention.

The prismatic column 20 is a column-beam joint 2 of a thickened reinforcement type.
The upper and lower ends of the column 1 are integrally formed with a column base tube portion 22 via a welded portion 24 to form a columnar tube.

As long as the prisms 20 have the same outer shape, the material and the processing method may be in an appropriate combination. Table 1 shows an example of the combination.

[0056]

[Table 1]

However, as shown in Table 1, the minimum outer radius of curvature R of the welding surface 24a abutting on the column-to-column joint portion 21 to be welded and joined as the rectangular column 20 and the column tube portion 22 is formed. Is R = 3.5t in the cold column,
Since the hot column has a bending limit of R = 2t, misalignment occurs, and combinations are restricted.

The prism 20 having a beam-to-column joint that enables a combination that can satisfy the regulation will be described in detail below.

FIGS. 7 (a) and 7 (b) are views showing misalignment dimensions of a corner portion R of a welded surface where a thickened column-to-column joint and a column tube are in contact. a) is a partial plan view, FIG.
(B) is a longitudinal sectional view along the line PP of FIG. 7 (a).

In FIGS. 7A and 7B, case 1 and case 2 in the combination types in Table 1 correspond.

In the drawing, when the value of the misalignment dimension d between the beam-to-column joint portion 21 and the column base tube portion 22 exceeds 10 mm, it is determined that the unusable range is used, and a combination of the misalignment dimension d within this range is required. There is.

Therefore, when the cold column is used for both the column-to-column joint portion 21 and the column base tube portion 22, which is the case 1, the plate thickness of the column-to-column joint cold column is set to 22, 25, and 25.
28, 32, 36, 40 mm to form a corner R,
The plate thicknesses of the column base tube cold column to be brought into contact with these cold columns are respectively 19, 19 to 22, 22 to
By setting them to 25, 28, 32, and 36 mm, welding and joining can be performed without the welding surface 24a to be in contact being shifted by 10 mm or more, and the integral rectangular column 20 can be formed.

When the column-to-column joint 21 is a hot column and the column blank 22 is a cold column, the thickness of the column-to-column joint hot column is 22, 25,
28, 32, 36, 40, 50, 60 mm and corner R
Are formed, and the plate thicknesses of the cold columns for the column tube section to be brought into contact with the hot columns are set to 19, 19, and 19 in this order, respectively.
19-22, 19-25, 19-28, 19-28, 2
By setting the thickness to 2 to 36, 28 to 40 mm, welding and joining can be performed without shifting the welding surface 24 a by 10 mm or more, and the integral rectangular column 20 can be formed.

FIG. 8 is a general explanatory view of tapering a difference dimension of a welded surface that abuts a column-beam joint portion and a column tube portion.

FIG. 8 shows a state in which the end portion of the increased column-beam joint 21 is tapered with a staggered dimension d so that the welding surface 24a to be brought into contact is substantially the same thickness. At this time, the tapered portion tc has a gradient of about 1 / 2.5 so that the thickness of the column at the welding surface 24a is equal.

Therefore, by applying the taper processing by this gradient to the welding surface 24a in contact with the whole, it is possible to smoothly transmit the stress acting on the welding surface.

FIGS. 9 (a) and 9 (b) show a beam-to-column joint in which four thickened steel plates are assembled in a substantially rectangular cross section, and a weld surface corner portion in contact with a column base tube. FIG. 9 (a) is a partial plan view, and FIG. 9 (b) is a perspective view of a beam-column joint in which a steel plate is assembled in a cylindrical shape.

In FIGS. 9A and 9B, the case 3 in the combination types shown in Table 1 corresponds.

In this case 3, the beam-to-column joint 21 is an assembling column in which a steel plate is assembled in a tubular shape having a substantially rectangular cross section.
When a cold column is used for the column base tube portion 22, a plurality of such that the difference between the outer angle, the inner angle, and the inner surface side of the corner portion is 10 mm or less in a state where the outer method is flush. And the column-to-column joint 21 is welded and joined to the assembled column, which is the column base tube 22, to form the prismatic column 20.

That is, in FIG. 9A, reference numeral 21 shown by a solid line denotes a thickened reinforcing column-beam joint, and reference numeral 22 shown by a dashed line denotes a column pipe section. And these two have shown the state which the upper and lower ends contacted by the top view.

In the figure, d1 is the outer misalignment between the column-beam joint 21 and the column base tube 22 at the corner, d2 is the inner misalignment, and d3 is the column-beam joint and the column element. The difference in the thickness of the column from the tube is shown.

In FIG. 9B, tc indicates a tapered portion in which the staggered dimension d1 at the outer corner is cut off. As for d2, a column base tube portion 22 having a corner portion R that does not cause misalignment is selected, or a weld having a small misalignment dimension is overlaid welding. Further, d3 is a tapered portion tc on the inner peripheral surface at the end of the beam-to-column joint 21 so that the welded surface 24a of the column-to-column joint 22 and the column tube 22 that is in contact with each other has the same thickness. (See FIG. 8).

FIGS. 10 (a) and 10 (b) show a beam-column joint in which four thickened steel plates are assembled into a tube having a substantially rectangular cross section.
FIG. 1 is a view showing a difference dimension of a welding surface at which an end of a column base tube portion assembled so as to have a similar outer shape is brought into contact.
0 (a) is a partial plan view, and FIG. 10 (b) is a sectional view of FIG. 10 (a).

FIGS. 10A and 10B correspond to Case 4 in the combination types in Table 1.

In the case 4, in which the column-to-column joint 21 and the column blank 22 are both assembled columns in which a steel plate is assembled in a cylindrical shape having a substantially rectangular cross section, the external method must be flush. In this state, a tapered portion is formed so as to reduce the misalignment dimension on the inner surface side to 10 mm or less, and welding / joining can be performed without the welding surface 24a contacting being shifted by 10 mm or more. Is formed.

That is, in FIG. 10 (a), 21 indicated by a solid line is a column-beam joint where a thickened steel plate is assembled in a cylindrical shape, and 22 indicated by a chain line is a combination of thin steel plates, and the column width B is reduced. It is a column element tube part assembled in a cylindrical shape so as to be equivalent. The two upper and lower ends are in contact with each other and are shown in a partial plan view. In the drawing, d denotes the difference between the inside of the column-beam joint portion 21 and the column base tube portion 22.

In FIG. 10 (b), tc is the misalignment dimension d of the column-to-column joint 21 which is thickened and formed in a cylindrical shape, and the welding surface 24a which is also formed and abutted in a cylindrical shape. 9 shows a tapered portion provided on the inner peripheral surface of the end portion of the beam-column joint 21 to be tapered so as to have the same thickness.

Therefore, as shown in FIG. 8, the tapered portion tc is tapered inward toward the inside at a gradient of about 1 / 2.5, so that the column-to-column joint 21 and the column tube 22 have no step. Be able to connect.

FIGS. 11 (a) and 11 (b) are explanatory views of a tapered portion of an assembling column which is a column-to-beam joint in which four thickened steel plates are assembled in a substantially rectangular cross section.

In FIG. 11 (a), reference numeral 21a denotes upper and lower ends of a steel sheet taken out of a predetermined length and width, respectively, by about 1 / 2.5.
Taper processing so as to have a slope
c is formed. Four steel plates 21a are formed for each of the beam-to-column joints 21.

In FIG. 11 (b), the four tapered steel plates are combined and welded in a cylindrical shape such that the tapered portions tc face inward to each other to form a thickened reinforcing column-beam joint. 21 are formed.

Therefore, the beam-column joint 21 formed with the tapered portion tc has a thickness equivalent to that of the columnar tube 22 (not shown) similarly formed of a thin steel plate in a cylindrical shape. A contacting welding surface 24a can be obtained.

FIGS. 12 (a) and 12 (b) are explanatory views of a tapered portion of a beam-column joint in which four thickened steel plates are combined in a substantially rectangular cross section.

In FIG. 12 (a), first, four steel plates 21a, each of which is made of a material having a predetermined length and width, are welded at each corner to form a column-beam joint portion 21 in a cylindrical shape.

In FIG. 12 (b), thereafter, a tapered portion tc is formed by tapering with a gradient of about 1 / 2.5 along the inner peripheral edges of both ends of the beam-column joint 21. The beam-column joint 21 is completed.

Therefore, it becomes equivalent to the thickened reinforcement type beam-to-column joint 21 having the tapered portion tc shown in FIG. 11 (b), and can exhibit the same configuration and operation. .

FIGS. 13 (a) and 13 (b) are views showing a prism having a beam-column joint. FIG. 13 (a) is a partial side view, and FIG. 13 (b) is FIG. 13 (a). It is sectional drawing of q part.

In FIG. 13 (a), a square pillar 20 constituted by vertically joining a column tube 22 to upper and lower ends of a beam-to-column joint 21 of a thickened reinforcing type via welding portions 24 is shown. Is shown.

In FIG. 13 (b), the inner peripheral surface is tapered in order to make the welded portion 24 to be welded via the welded surface 24a where the beam-to-column joint 21 and the column tube 22 come into contact with each other the same thickness. The state in which the tapered portion tc is removed by processing is shown.

(Example) As described above, in order to form the prismatic column 20 having the thickened reinforcing column-beam joint, the material, plate thickness, etc. of the column-beam joint 21 and the column base tube 22 are determined. The type and range of the combination could be set from the limits of the curvature of the corners coming from and the increase in column thickness.

Table 2 shows the results.

[0092]

[Table 2]

Note: ○: column-to-column joint: cold column, column shell: hot column △: column-to-column joint, column both cold column ◎: column-to-column joint Part: Hot column or cold column, column element: Cold column

[0094]

As described above, according to the first aspect of the present invention, two zones are provided at the boundary of the thickness limit line of the thickness of the column plate, and the structural form of the beam joint is adapted for each zone. Therefore, it is possible to set a beam joint structure that is suitable for strength and cost. Accordingly, a beam-joining structure having a strength suitable for the load applied to the beam-column joint is obtained, and the cost can be reduced.

According to the second aspect of the present invention, the thickness limit line is set to twice the thickness of the columnar plate. Therefore, in the second zone exceeding twice, even if the thickness cannot be increased twice or more, the beam is By providing a horizontal haunch and welding it, the strength of the beam-column joint can be ensured. Therefore, the beam-to-column joint can be joined without increasing the thickness more than twice, and the cost can be reduced.

According to the third aspect of the present invention, since the thickening extensions are defined above and below the beam flange, the strength can be improved in addition to the strength due to the increase in the thickness of the beam-column joint.

According to the fourth aspect of the present invention, the staggered dimension of the welded portion is set to 10 mm or less, so that the beam-column joint portion and the column base tube portion can be integrally welded, and the load can be reduced. It is possible to form a square pillar capable of reliably transmitting.

According to the fifth and sixth aspects of the present invention, the staggered dimension of the welded portion is set to 10 mm or less, so that the distance between the cold column for the beam-column joint and the cold column for the column tube section is reduced. Can be integrally welded to form a rectangular column between cold columns that can surely transmit a load.

According to the seventh and eighth aspects of the present invention, the staggered dimension of the welded portion is set to 10 mm or less, so that the hot column for the beam-column joint portion and the cold column for the column base tube portion are formed. Since the gaps can be integrally welded, square columns of a hot column and a cold column can be formed which can surely transmit a load.

According to the ninth aspect of the present invention, since the staggered size of the welded portion is 10 mm or less, the assembly column for the beam-column joint and the cold column for the column tube section are integrated. It is possible to form square columns of an assembling column and a cold column, which can be welded in a reliable manner and can reliably transmit a load.

According to the tenth aspect of the present invention, the staggered dimension of the welded portion is set to 10 mm or less, so that the assembly column for the beam-column joint and the assembly column for the column pipe section are integrated. It is possible to form a square pillar between the assembled columns that can be welded in a reliable manner and can reliably transmit the load.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a thickened reinforcing column-beam joint according to Embodiment 1 of the present invention.

FIG. 2 is a side view showing a column-beam joint of the thickening reinforcement type according to the first embodiment.

FIG. 3 is a coordinate diagram showing, using a width-to-thickness ratio of a beam-to-column joint according to the first embodiment as a coordinate and an adaptation zone of a structural type of a beam joint by a thickness increase limit line.

4A and 4B are diagrams showing a direct connection structure type of a beam joint according to Embodiment 1; FIG. 4A is a side view, and FIG.
It is a top view.

5A and 5B are diagrams showing a horizontal haunch beam joining structure type of beam joining according to the first embodiment, FIG. 5A is a side view, and FIG.
(B) is a plan view.

FIG. 6 is a correlation diagram showing an extension portion length and a proof stress for each thickness increase of the beam-column joint according to the first embodiment.

FIG. 7 is an explanatory view showing a welding surface between the column-column joint column and the column blank tube column according to Embodiment 2;
7A is a partial plan view, and FIG. 7B is a PP of FIG.
FIG. 4 is a partial longitudinal sectional view along a line.

FIG. 8 is an explanatory diagram of taper processing of a welding surface according to the second embodiment.

FIG. 9 is a view showing a welding surface between an assembling column for a beam-column joint and a cold column for a column pipe section according to Embodiment 2; FIG. 9 (a) is a partial plan view; (B) is explanatory drawing which shows the taper processing of a beam-column joint part column.

FIG. 10 is a view showing a welding surface of an assembling column for a beam-column joint and a column pipe section according to Embodiment 2;
10A is a partial plan view, and FIG. 10B is a partial vertical sectional view.

11A and 11B are views showing taper processing of an assembling column for a beam-column joint according to the second embodiment, wherein FIG. 11A is a perspective view and FIG. 11B is a perspective view showing the assembling column. It is.

FIG. 12 is a view showing another alternative of FIG. 11 according to the second embodiment, and FIG. 12 (a) is a perspective view showing an assembly column, and FIG.
FIG. 2B is a perspective view showing the taper processing.

FIG. 13 is an explanatory view showing a prism according to Embodiment 2; FIG. 13 (a) is a partial side view, and FIG. 13 (b) is FIG.
It is sectional drawing of q part of 3 (a).

14A and 14B are diagrams of a diaphragm-reinforcement type beam-column joint according to the related art, where FIG. 14A is a side view and FIG.
Is a plan view.

[Explanation of symbols]

 Reference Signs List 20: square column 21: thickened reinforcing column-beam joint 22: column base tube 2A: diaphragm-reinforced column-beam joint H: beam B: column width t, ti: column thickness B / t , B / ti: width-to-thickness ratio jL: range of thickened portion

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kimio Hamano 4-4-44 Shibaura, Minato-ku, Tokyo Inside Yokogawa Bridge (72) Inventor Kenichi Fujita 4-4-44 Shibaura, Minato-ku, Tokyo Yoko Co., Ltd. River bridge F term (reference) 2E125 AA04 AA14 AB01 AB16 AC15 AC16 AG03 AG31 AG34 AG56 BE10 CA90

Claims (10)

[Claims] 1. A width-to-thickness ratio of a beam-to-column joint reinforced by a diaphragm and a width of a beam-to-column joint reinforced by thickening in a rectangular column of a structure having a pure ramen structure and a planar shape. The thickness ratio is used as the coordinate axis, the width-to-thickness ratio of the plurality of pre-designed column-beam joints reinforced with the diaphragm, and the beam pre-yield is correlated from the plurality of pre-designed values by yield line theory. In addition to plotting the thickness of the column-beam joint of the thickened reinforcement type that calculated the column-plate thickness as described above, the coordinate thickness was increased when the column-plate thickness of the column-beam joint was increased. Draw a limit line, and adapt a different beam joint structure type to a first zone regulated by the thickening limit line and the ordinate axis and a second zone regulated by the amplification limit line and the abscissa axis. To form a beam-column joint for each zone. Column Joints of increasing thickness reinforced, wherein. 2. A thickening limit line is drawn by setting the thickness increase limit of the beam-column joint to twice the thickness of the rectangular column-column plate, and the structural form of the beam joint in the first zone is the column-beam shape. 2. A horizontal haunched beam joining structure in which a beam is directly joined to the joining portion in a direct connection joining structure, and a second zone has a horizontal haunch beam joining structure in which a horizontal haunch is provided in a beam of the column-beam joining portion.
4. A beam-to-column joint of thickening reinforcement type according to item 1. 3. The thickened area of the thickened reinforcement type beam-column joint is defined as a thickened extension extending from both the upper and lower beam flanges of the beam.
The thickened reinforcing column-beam joint according to claim 1 or 2, wherein the doubled column width is added above and below the beam. 4. A welding method in which a column-beam joint assembly column for welding a beam-column joint and a column tube to form a square column and a column-tube assembly column in vertical contact. A prismatic column having a thickened reinforcing column-beam joint, wherein a staggered dimension of each contacting welding surface is 10 mm or less. 5. A cold column for a beam-column joint and a cold column for a column-body joint, which weld the column-beam joint and the column tube to form the rectangular column. The thickened reinforcement type beam-to-column joint according to claim 4, wherein a staggered dimension of a corner portion R of each contacting welding surface is set to 10 mm or less in a welded portion to be brought into contact. Square pillar. 6. The cold column for a beam-to-column joint has a thickness of 2
The corners R are formed as 2, 25, 28, 32, 36, and 40 mm, and the plate thicknesses of the cold columns for the column tube section to be brought into contact with these cold columns are 19, 19 to 19 in this order, respectively. 22,22-25,28,32,36mm
The rectangular column having a thickened reinforcing column-beam joint according to claim 5. 7. The column-beam joint hot column and the column-body tube cold column are welded to each other to form the prismatic column by welding the column-column joint and the column-base tube. In the welded portion to be abutted, the misalignment dimension of the corner R of the welding surface to be abutted is 10
The prismatic column having the thickened reinforcing column-beam joint according to claim 4, wherein the rectangular column is not more than mm. 8. The thickness of the hot column for beam-column joint is 2
The corners R are formed as 2, 25, 28, 32, 36, 40, 50, and 60 mm, and the plate thicknesses of the column base tube cold columns to be brought into contact with the hot columns are set in this order. 19,19,19-22,19-25,1
The rectangular column having a thickened reinforcing column-beam joint according to claim 7, wherein the rectangular column has a thickness of 9 to 28, 19 to 28, 22 to 36, 28 to 40 mm. 9. An assembling column for a beam-to-column joint in which a steel plate is assembled into a tube having a substantially rectangular cross section, wherein said column-beam joint is welded to said column base tube to form said prismatic column. In the welded portion where the cold column for the pipe section is abutted in the vertical direction, the difference between the outer angle, the inner angle, and the inner surface side of the corner is 10 mm or less, with the outer surface being flush with each other. 5. The prismatic column having a thickened reinforcing column-beam joint according to claim 4, wherein a plurality of tapered portions are provided in the column. 10. An assembling column and column tube for joining a column and beam, wherein the column and beam joint are welded to the column base tube to form the square column, and a steel plate is assembled into a tube having a substantially rectangular cross section. At the weld where the assembly column is abutted in the vertical direction, the misalignment dimension on the inner surface side is 10m with the outer method being flush.
5. The rectangular column having a thickened reinforcing column-beam joint according to claim 4, wherein a tapered portion processed so as to have a width of m or less is formed. 6.