JPH07292968A - Beam-column joint structure and its assembly and disassembly method - Google Patents

Abstract

(57) [Summary] [Purpose] Easy to assemble and disassemble, improve work efficiency and construction accuracy, and have excellent joint strength, and to reuse each member after disassembly in its original shape. An affordable and economical beam-column joint structure and its assembling and disassembling method are obtained. [Structure] Joining member 3 between upper pillar 20 and lower pillar 25
0 is provided, and a recess 33 into which an end plate 37 integrally provided at the end of the beam 36 is fitted is formed on the outer periphery of the joining member 30, and the end plate 37 of the beam 36 is fitted into the recess 33. In this state, the ring-shaped metal fittings 24 and 29 are engaged with the ends of the joining member 30 and the end plate 37 and the outer peripheries of the upper and lower pillars 20 and 25, respectively. The beam 36 is joined between the two.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-beam joining structure suitable for joining a steel pipe column and a steel beam, and an assembly thereof.
It relates to a dismantling method.

[0002]

2. Description of the Related Art Generally, in the steel frame structure,
A joining structure in which a pillar and a beam are joined by a large number of bolts is adopted. However, in such a beam-column joint structure using a large number of bolts, it takes a lot of time and effort to tighten all the bolts, so that it requires a great deal of man-hours for the construction including temporary construction and dismantling of the scaffold. There was a drawback that it required a construction period and was uneconomical. Moreover, when disassembling this, it takes a lot of time and effort again to remove the above-mentioned many bolts, and further, since each bolt is inferior in mechanical strength, among the above-mentioned bolts, the bolt to which the concentrated load acts is It cannot be dismantled while retaining the original shape of the columns and beams because it deforms and makes it impossible to remove it, and as a result it is necessary to cut the relevant part, so these There was a problem that the members could not be reused as they were.

Therefore, as a column-beam joint structure that solves the problems in the column-beam joint structure using the above bolts,
Those shown in FIGS. 5 to 7 are considered. Figure 5
In FIG. 7, reference numeral 1 in the drawing is an upper pillar made of steel pipe in the above-described conventional beam-column joint structure, and reference numeral 2 is a lower pillar made of steel pipe. Cylindrical joining metal parts 3 and 4 are integrally fixed to the column bases of the upper column 1 and the column heads of the lower column 2 by welding or the like. The joining metal parts 3 and 4 are formed to be thicker than the upper and lower pillars 1 and 2, and disk-shaped horizontal stiffeners 5 and 6 that close the openings are provided therein. In addition, groove-like fitting portions 7 and 8 are formed on the front end surfaces of the joining metal parts 3 and 4 along the circumferential direction. And these upper pillar 1 and lower pillar 2
Steel beams 9 ... Are joined between.

That is, at each joint end of the beams 9 ...
The end plates 10 having a shape in which a quarter circumference of the cylindrical body is cut are integrally formed, and both side surfaces of these end plates 10 are butted against each other to form a cylindrical body as a whole. , By fitting the upper and lower ends thereof into the fitting portions 7 and 8 of the connection hardware 3 and 4,
The beams 9 ... Are joined between the upper and lower columns 1 and 2. In the upper pillar 1 and the lower pillar 2, the horizontal stiffeners 5 and 6 of the connecting hardware 3 and 4 are tightening bolts 11 and nuts 12.
It is connected and fixed integrally by being tightened by.

[0005]

However, in the conventional beam-column joining structure having the above-mentioned configuration, the cylindrical body constructed by abutting the end plates 10 ... Since the structure is sandwiched between the end plate 10 and the end plate 10, the end plate 10 is caused by a manufacturing error in the end plates 10 ..., the metal fittings 3 and 4 and the fitting parts 7 and 8 thereof.
… Between each other or end plates 10 and fitting parts 7, 8
There is a problem that it is difficult to maintain the construction accuracy of the entire steel frame structure because the backlash is apt to be generated between the and and the structural errors cannot be absorbed. In addition, when different torsional stresses are applied to the beams 9 due to an earthquake or the like, the joint portion is easily deformed due to the backlash, which may make it impossible to secure sufficient joint strength. Also, when assembling and disassembling the above-mentioned beam-column joints,
Since the tightening bolts 11 and the nuts 12 that connect and fix the upper and lower joining metal parts 3 and 4 are arranged in a narrow space inside the upper pillar 1 and the lower pillar 2, they are tightened or disassembled. There was also a problem that it was extremely difficult.

The present invention has been made to solve the problems of the above-described conventional beam-column joint structure and its assembling / disassembling method. The assembling / disassembling is easy and the working efficiency and construction accuracy can be improved. It is possible to provide a beam-column joint structure and an assembling / disassembling method which are excellent in joint strength, and which are economical in that each member after dismantling can be reused in its original shape. It is what

[0007]

According to another aspect of the present invention, there is provided a beam-column joining structure in which a joining member is provided between an upper column and a lower column, and the beam is provided on the outer periphery of the joining member. An end plate integrally provided at the end of the beam is formed with a recess into which the end plate of the beam and the end of the joining member and the end of the end plate are inserted. By engaging a ring-shaped metal fitting on the outer circumference of the pillar base and the ring-shaped hardware on the outer circumferences of the ends of the joining member and the end plate and the stigma of the lower pillar, The above-mentioned beam is joined between the upper pillar and the lower pillar.

According to a second aspect of the present invention, there is provided a column-beam joint structure in which a threaded portion is formed on an inner peripheral surface of the ring-shaped metal article according to the first aspect, and a column base and a lower column of the upper column are formed. On the outer circumference of the stigma, and on the outer circumference of the end portion of the joining member and the end portion of the end plate, respectively, to form a threaded portion that engages with the threaded portion of the ring-shaped metal object, The threaded portion of the column base of the upper pillar is screwed into the threaded portion of the joining member and the end portion of the end plate, and the threaded portion of the other ring-shaped metal object is joined to the threaded portion of the stud of the lower pillar and the end of the joining member The beam is joined between the upper pillar and the lower pillar by being screwed into the threaded portion of the end portion and the end portion of the end plate. Furthermore, the column-beam joint structure according to claim 3 is applied when the upper column and the lower column according to claim 1 or 2 are steel pipe columns, and the beam is a steel beam. It is a thing.

Next, in the method of assembling a pillar / beam according to a fourth aspect of the present invention, a lower pillar having a threaded portion formed on the pillar head is erected, and then a threaded portion is formed on the upper and lower ends of the pillar head of the lower pillar. After engaging the lower end portion of the joining member, a screw portion integrally provided at the end portion of the beam in the recess formed in the outer periphery of the joining member and communicating with the screw portion of the joining member at the upper and lower ends. Then, the ring-shaped metal fitting screwed into either the stigma or the joining member and the lower end portion of the end plate in advance is rotated to fit the other threaded portion of the ring-shaped metal fitting to the other end. By fixing the joining member and the end plate on the lower pillar by screwing into the screw part of
Next, an upper column having a threaded portion formed on the column base is provided at the upper end of the joining member, and the ring-shaped metal object is screwed in advance to either the column base or the upper end of the joining member and the end plate. Is rotated to screw the threaded portion of the ring-shaped metal piece to the other threaded portion, thereby vertically setting the upper column on the joining member and joining the beam between the upper column and the lower column. It is characterized by that.

According to a fifth aspect of the present invention, there is provided a method of disassembling a pillar / beam in which the pillar / beam of the upper pillar, the joining member and the end plate are first disassembled when the pillar / beam assembled by the assembling method of the fourth embodiment is disassembled. The upper column is removed from the joining member and the end plate by rotating the ring-shaped metal fitting screwed to the upper end to release one screw, and then the stigma of the lower column and the lower end of the joining member and the end plate. It is characterized in that the joint member and the end plate are removed from the lower column by rotating the ring-shaped metal object screwed to the part to release one screw.

[0011]

According to the column-beam joint structure of the first aspect, since a large number of bolts are not required for joining the column and the beam, the construction becomes easy. In addition, manufacturing errors in the end plate can be absorbed by the recess of the joining member, and both ends of the joining member and both ends of the end plate and the outer perimeters of the upper and lower columns are integrally connected and fixed by a ring-shaped metal piece. As a result, there is no play between these members, and as a result, the joint does not deform during an earthquake or the like, so that construction accuracy can be improved and high joint strength can be obtained. . Moreover, the upper pillar, the lower pillar, the joining member, the beam, and the like can be reused in their original shapes by releasing the engagement of the ring-shaped metal object, which is economical.

Further, in the column-beam joint structure according to the second aspect of the present invention, the upper and lower columns, the joint member and both ends of the end plate are screwed with a threaded portion formed on the inner circumference of the ring-shaped metal article. Since they are integrally joined by tightening them together and tightening, in addition to the action described in claim 1, it is possible to surely prevent rattling between the members, and further improve the joining strength. be able to. In addition, the joining can be performed by a mechanical work such as rotating a ring-shaped metal piece, so that the construction is easier and more efficient. Therefore, as in the column-beam joint structure according to the third aspect of the invention, the threaded portion is easy to process, especially when it is used in a joint structure of a steel pipe column and a steel beam, which is preferable.

Further, according to the method of assembling and disassembling the column and beam according to the fourth and fifth aspects, the assembling and disassembling of the upper and lower columns and the beam can be performed only by rotating the ring-shaped metal article. It is efficient and has excellent workability. As a result, it is possible to significantly reduce the construction period, as compared with the case of using a large number of bolts.

[0014]

1 to 4 show an embodiment of a beam-column joining structure according to the present invention, in which reference numeral 20 designates an upper column. The upper column 20 is a steel pipe column, and the column base is formed thick. An outer peripheral portion of the column base is provided with a stepped engaging portion 21 having a small diameter at a tip portion thereof. Further, a screw portion is provided on an outer peripheral surface above the engaging portion 21. 22 is formed. A ring-shaped metal fitting 24, which has a screw portion 23 formed on the inner peripheral surface thereof and functions as a nut, is screwed into the screw portion 22. The lower column 25 located below the upper column 20 is also a steel pipe column, and similarly to the upper column 20, a step-like engaging portion 26 is formed on the outer peripheral portion of its stigma, and the engaging portion is formed. A threaded portion 27 is formed on the outer peripheral surface located below 26, and a ring-shaped metal fitting 29, which has a threaded portion 28 formed on the inner peripheral surface and functions as a nut, is screwed into the threaded portion 27.

The column base of the upper column 20 and the lower column 2
A joint metal article (joint member) 30 is disposed between the stigma 4 and the stigma 4. The joining hardware 30 is one in which four locking members 32 ... Are integrally fixed to the outer circumference of a hardware body 31 having a substantially cylindrical appearance by welding or the like. Here, each of the locking members 32 ... Is formed by cutting a ⅛ circular portion of a cylindrical body, and is arranged at equal intervals in the circumferential direction of the metal body 31. . As a result, between the locking members 32, there are formed recesses 33 ... In which the ⅛ circumferential portion of the cylindrical body is missing. The locking member 32
Are formed so that both ends thereof extend a predetermined length from both ends of the hardware main body 31, and the inner diameters of both ends extending from the hardware main body 31 are the same as those of the upper and lower pillars 20 and 25. It is formed so as to have substantially the same outer diameter as the joint portions 21 and 26. Further, the threaded portions 2 of the ring-shaped metal fittings 24 and 29 are provided on the outer peripheral surfaces of both ends of the locking members 32.
Threaded portions 34 and 35 that are threadedly engaged with 3 and 28 are formed.

On the other hand, on the outer peripheral portion of the above-mentioned joining hardware 30, 4
Book beams 36 are arranged. An end plate 37 is integrally joined and fixed to the end portion of each beam 36. This end plate 37 is the above-mentioned joining metal piece 30.
Is formed by cutting a ⅛ circumferential portion of a cylindrical body having substantially the same shape as that of the locking member 32 of FIG. It is formed so as to form a cylindrical body. Further, on the outer circumferences of both end portions of the end plate 37, screw portions 34, 35 formed at both end portions of the locking member 32, respectively.
Threaded portions 38 and 39 are formed to communicate with the.

The beams 36 are fitted into the respective recesses 33 of the metal fitting 31 from the four end plates 37, so that both side surfaces of the beams 36 abut on both side surfaces of the locking member 32. With the locking member 32 ... Comprising a cylindrical body as a whole, the upper and lower ends thereof are engaged with the engaging portions 21 and 26 of the upper column 20 and the lower column 25, respectively.
Further, the ring-shaped metal fittings 24, 29 are screwed onto the threaded parts 22, 27 of the upper and lower columns 20, 25 and the threaded parts 34, 35, 38, 39 of the connection hardware 30 and the end plates 37, so that the upper parts It is integrally connected and fixed between the pillar 20 and the lower pillar 25. In addition, the ring-shaped hardware 2
4, 29 wall thickness dimensions and screw dimensions of each screw part 22, etc.,
Specifications such as the number of threads and backlash are the upper and lower columns 20, 25.
It is appropriately selected according to the conditions such as the load acting on the joint between the beam and the beam.

According to the beam-column joint structure having the above-described structure, the upper and lower columns 20, 25 and the both ends of the joint hardware 30 and the end plates 37 are formed on the inner circumference of the ring-shaped hardware 24, 29. Since the screws 23 and 28 are integrally joined by being screwed together, a large number of bolts are not required for joining the column and the beam, and the construction is easy. Further, the upper column 20 and the lower column 25 are connected to each other with the joining metal piece 30 interposed therebetween, and moreover, manufacturing errors and the like in the end plates 37 can be absorbed by the concave portions 33 of the joining metal piece 30. Furthermore, ring-shaped hardware 24, 29
Thus, since the joining metal piece 30 and the end plates 37 are integrally fastened, there is no backlash between these members. As a result, the joint portion is not deformed at the time of an earthquake or the like, so that the construction accuracy can be improved and a high joint strength can be obtained.

In addition, when joining, the ring-shaped metal piece 2
Since it can be performed by mechanical work such as rotating 4, 29, the construction becomes easier and more efficient, and at the time of dismantling, the ring-shaped metal fittings 24, 29, the joining metal fitting 30, and the end plate 37 ... By releasing the engagement, the upper column 20, the lower column 25, the joining member 3
0 and the beams 36 can be disassembled in the same shape and reused, which is economical.

Next, an embodiment of an assembling method of the column-beam joint structure having the above-described structure will be described. First, the lower pillar 25 to which the ring-shaped metal fitting 29 is attached is erected in advance, and then the joining hardware 3 is attached to the engaging portion 26 formed on the stigma of the lower pillar 25.
By engaging the lower end portion of 0, the metal joint 30 is erected on the lower pillar 25. Next, the end plates 37 at the ends of the beams 36 are inserted into the recesses 33 of the metal joint 30.
... and the lower end portion of the engaging portion 26 in the same manner.
, So that the beams 36 are installed. Then, the ring-shaped metal fitting 29 is rotated so that the threaded portion 2
8 is screwed onto the threaded portion 35 of the outer periphery of the locking member 32 of the metal joint 30 and the threaded portion 39 at the lower end of the end plate 37, whereby the metal joint 30 and the end plates 37 are fixed on the lower column 25. At this time, in order to ensure smooth rotation of the ring-shaped metal piece 30 at the time of disassembling, it is preferable to apply an anti-seizure agent or the like to the screw portions 28, 35, 39.

Next, the upper column 20 to which the ring-shaped metal fitting 24 is attached in advance is disposed on the upper end portion of the above-mentioned joint metal fitting 30, and the upper end portion of the locking member 32 of the joint metal fitting 30 and the upper portion of the upper pillar 20 are provided in the engaging portion 21. The upper ends of the end plates 37 are engaged. Then, similarly, the ring-shaped metal fitting 24 is rotated so that the threaded portion 23 is screwed into the threaded portion 3 on the outer periphery of the locking member 32 of the joining hardware 30.
4 and the upper plate 20 is fixed onto the metal joint 30 by being screwed into the threaded portion 38 at the upper end of the end plate 37.

Further, in order to dismantle the joint portion of the column-beam thus assembled, an operation reverse to the above-mentioned assembly procedure may be performed. That is, first, the ring-shaped metal fitting 24 screwed to the pillar base of the upper pillar 20 and the upper ends of the joint hardware 30 and the end plates 37 ... The joining hardware 30 and the end plates 37 are removed. Then, the ring-shaped metal fitting 29 screwed to the stigmas of the lower pillar 25 and the lower ends of the joint hardware 30 and the end plates 37 ... Is rotated to release one screw, so that the lower pillar 25 is joined to the joint hardware. 30 and the beam 36 ... Are removed.

As described above, according to the method of assembling and disassembling the column and beam, the assembling and disassembling of the upper and lower columns 20, 25 and the beams 36 are carried out only by mechanical work such as rotating the ring-shaped metal fittings 24, 29. Since it can be performed in, the construction is extremely efficient and the workability is excellent. For this reason,
Especially, compared with the case where a large number of bolts are used, the construction period can be significantly shortened and the upper pillar 2
0, the lower column 25, the joining member 30, the beams 36, etc. can be easily disassembled in the same shape, and as a result, the above members can be reused, which is economical.

[0024]

As described above, according to the method of joining columns and beams and the method of assembling and disassembling the columns and beams according to the present invention, since a large number of bolts are not required for joining columns and beams, the construction is easy. In addition, since both ends of the joining member and both ends of the end plate and the outer peripheries of the upper and lower columns are integrally connected and fixed by the ring-shaped metal member, there is no backlash between these members. Since the joint does not deform during an earthquake or the like, it is possible to improve construction accuracy and obtain high joint strength. Moreover, the upper pillar, the lower pillar, the joining member, the beam, and the like can be reused in the same shape by releasing the engagement of the ring-shaped metal object, which is economical and the construction is easy and the construction period can be shortened. Therefore, it is possible to significantly reduce the total cost.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a beam-column joint structure of the present invention.

FIG. 2 is a perspective view showing a state in which the pillar and the beam of FIG. 1 are joined together.

FIG. 3 is a plan view in which a part of FIG. 2 is cross-sectionally viewed.

4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a side view showing a conventional beam-column joint structure.

FIG. 6 is an exploded perspective view showing a connection portion of FIG.

FIG. 7 is a side view showing a cross-sectional view of a main part of a connection portion of FIG.

[Explanation of symbols]

20 Upper Column 22, 23, 27, 28, 34, 35, 38, 39 Threaded Part 24, 29 Ring-shaped Hardware 25 Lower Column 30 Joined Hardware (Joining Member) 33 Recess 36 Beam 37 End Plate

Claims (5)

[Claims] 1. A joint member is disposed between an upper pillar and a lower pillar, and a recess is formed on an outer periphery of the joint member into which an end plate integrally provided at an end of a beam is fitted. With the end plate of the beam fitted in the recess, the end of the joining member and the outer periphery of the end of the end plate and the column base of the upper column, and the end of the joining member and the end plate. A beam-column joint characterized in that the beam is joined between the upper column and the lower column by engaging ring-shaped hardware with the outer periphery of the end of the column and the stigma of the lower column, respectively. Construction. 2. A threaded portion is formed on the inner peripheral surface of the ring-shaped metal object, and the outer peripheries of the column bases of the upper columns and the lower column, and the end portions of the joining member and the end plate. And a threaded portion that engages with the threaded portion of the ring-shaped metal article is formed on the outer periphery of the threaded portion of the ring-shaped metal article, and the threaded portion of one of the ring-shaped metal article is connected to the threaded portion of the column base of the upper column and the end of the joining member And screwed to the threaded portion of the end of the end plate, and the other threaded portion of the ring-shaped metal object is the threaded portion of the stigma of the lower column, the end of the joining member, and the end of the end plate. The beam-column joining structure according to claim 1, wherein the beam is joined between the upper column and the lower column by being screwed into the threaded portion. 3. The column-beam joint structure according to claim 1, wherein the upper column and the lower column are steel pipe columns, and the beam is a steel frame beam. 4. A lower column having a threaded portion formed on the stigma is erected, and then, after the lower ends of the joining members having the screw portions formed on the upper and lower ends are engaged with the stigmas of the lower column, In the recess formed in the outer periphery of the joining member, the end plate integrally provided at the end of the beam and having the threaded portion communicating with the threaded portion of the joining member at the upper and lower ends is fitted, and then The ring-shaped metal object screwed in advance to either the stigma or the joining member and the lower end portion of the end plate is rotated to screw the threaded portion of the ring-shaped metal object into the other threaded portion. By fixing the joining member and the end plate on the lower column by this, the upper column of which the threaded portion is formed on the column base is disposed at the upper end of the joining member, and the column base or The joining member and the end play The upper pillar on the joining member by rotating the ring-shaped metal object screwed to either one of the upper end portions of the And the beam is joined between the upper and lower columns. 5. When disassembling the column beam assembled by the assembling method according to claim 4, first, the ring shape screwed to the column base of the upper column and the upper end of the joining member and the end plate. The upper pillar is removed from the joining member and the end plate by rotating the metal piece to release one screw, and then screwed to the stigma of the lower pillar and the lower end of the joining member and the end plate. A method of disassembling a beam-column, wherein the joining member and the end plate are removed from the lower column by rotating the ring-shaped metal object being released to release one screw.