JP2815817B2 - Joint structure of end plate type steel structure and joining method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of an end plate type steel structure in a middle-high-rise steel building and the like and a method of joining the same.

[0002]

2. Description of the Related Art Conventionally, in a low-rise building of about two or three floors, a steel beam 51 having end plates 50 at both ends as shown in FIG. End plates 5 at both ends
A joining structure in which the bolt 0 is bolted to each steel column 52 has been put to practical use. In this case, even if the steel beam 51 cannot be inserted between the columns 52, 52 due to a construction error of the column interval or a dimensional error of the steel beam 51, the steel beam 52 is forcibly suspended when the steel beam 51 is suspended. The steel beam 51 can be inserted between them and joined together. However, in the case of a middle-to-high-rise building in which the steel columns are thick, the gap between the columns cannot be forcibly expanded, so that the end plate type joint structure as described above cannot be adopted. Therefore, in the case of a middle-to-high-rise building, a steel beam is bolted to a steel column via a bracket or a split tee welded in advance. However, in the case of a bracket type joint, since the bracket is welded to the steel column in advance at the factory, the bracket that protrudes in a branch shape when the steel column is transported is bulky, and the transport efficiency is deteriorated. is there. When split tees are used, bolts can be joined by absorbing a certain amount of construction error due to the excess of the bolt hole diameter. , And the weight of the split tee is heavy, so that the total weight of the steel frame increases, which is uneconomical.

An object of the present invention is to provide a joining structure of an end plate type steel structure which is economical and easy to construct, and a joining method therefor.

[0004]

SUMMARY OF THE INVENTION The present invention relates to an end plate type steel frame in which a steel beam having end plates at both ends is interposed between adjacent steel columns, and the end plates at both ends are bolted to the respective steel columns. A joint structure of a structure, wherein the steel beam is divided near an end,
The steel beam divided bodies on both sides of the divided portion are joined to each other by an intermediate joint. In the above-mentioned joint structure, the intermediate joint may be formed by bolting an attachment plate overlapping the steel beam divided bodies on both sides to the steel beam divided bodies on both sides. In the joining structure, the intermediate joint is a bolt joint portion in which a splint plate overlapping the steel beam splitters on both sides is bolted to the steel beam splitters on both sides, and a welded joint portion in which the steel beam splitters on both sides are welded to each other. It may be composed of In the above joint structure, the steel column is a square steel pipe, and the bolt for joining the end plate to the steel column is a one-side bolt .
You . In this specification, the term "one-side bolt" is a general term for a shaft-shaped fastener that can be tightened by being plastically deformed at the other end so that the head is expanded in diameter by operation from one end, and also referred to as a blind bolt. that it has been called. Claim 1
In the combined structure, a pin and
Of the pin in order from the pin head side
Busle, grip sleeve, shear washer, receiver
Gold and a nut, wherein the nut
Compression force between pin head and shear washer due to tightening
Acting shear washer, grip sleeve, and valve
The sleeve is sandwiched, and the valve sleeve is outwardly flanged
The one that plastically deforms and shears the shear washer is used. Previous
The pin has a pin head slightly larger than the pin diameter at the tip.
And has a break groove in the middle of the thread following the round shaft,
The sleeve is made of a softer material than the grip sleeve
That can be plastically deformed outward in the form of a collar under the load of an axial force
The shear washer has an inner periphery on the end face of the grip sleeve.
Engage and shear with a predetermined axial force. In the joint structure, a receiving member on which an end plate of a steel beam is placed may be joined to the steel column with a one-side bolt.

According to a third aspect of the present invention, there is provided a method according to the first aspect, wherein a steel beam having end plates at both ends is interposed between adjacent steel columns, and the steel beam is divided near one end. the beam splitting member joined together at an intermediate joint, the end plates of said end a joining method of the end plate format steel structures bolted to each steel column, after
Other processes described, including the process of following. That is, joining of the shorter steel beam splitter to the steel column by the end plate is performed at the construction site by erection, and the erected steel column and its adjacent column are erected. Thereafter, the longer steel beam divided body is lifted by a heavy machine, the end plate of this steel beam divided body is bolted to the adjacent steel column, and both steel beam divided bodies are joined by the intermediate joint. Claim 5
In the case of the bright method, in this joining method, a plurality of shorter steel beam splitters are joined at substantially the same height position of the same steel column so as to extend in different directions, respectively. of steel beam divided body, bonding a part of the steel beam split body steel column with Chikumi, so as to join the rest of the steel beam splitting member after like an anchor of the steel columns.

Further, the method of the invention of claims 4 and 6, the Keep bonding method, a bonding method in the case of those that are dividing the steel beams in the vicinity of both ends, over described later
In addition to the degree, including the process of following. That is, joining of the short steel beam splitters on both sides to each steel column by the end plate is performed by the terrain at the construction site. These laid steel columns are erected and then the intermediate steel beam split is lifted by heavy equipment, and both ends of the intermediate steel beam split are joined to the steel beam splits on both sides by the intermediate joint. . The invention of claim 6
In this joining method, in the joining method, a plurality of steel beam splitters extending in these different directions are joined to each other so that a plurality of steel beam splitters at end portions are joined at substantially the same height position of the same steel column so as to extend in different directions. of, bonded to a portion of the steel beam split body steel column with Chikumi, so as to join the rest of the steel beam splitting member after like an anchor of the steel columns.

According to a third aspect of the present invention , the steel beam is divided near one end.
To join end plate type steel structure
And a method of joining an end plate type steel structure in the case where a steel beam is divided, the intermediate joint is provided with a supporting plate overlapping between the corresponding steel beam divided members, and the supporting plate and the steel beam divided member Are joined by bolts that penetrate through them, and are joined in the following process. That is, the temporary joint of the intermediate joint is performed before the steel beam is erected using a bolt smaller than an appropriate diameter for the bolt hole diameter as the bolt of the intermediate joint. The temporarily joined steel beam is lifted between the steel columns on both sides, and the end plates at both ends are bolted to the steel beam by end plates. Thereafter, the bolts of the intermediate joint are replaced with bolts of an appropriate diameter.

[0008]

According to the joint structure of the present invention, the steel beam is divided in the vicinity of the end, and the two steel beam divided bodies are joined to each other by the intermediate joint.
The construction error of steel columns can be absorbed. Therefore, it is possible to easily arrange and join the steel beams between the adjacent steel columns while using the joining method by the end plate. In addition, since the divided portion of the steel beam is located near the end, the joining work of the intermediate joint, which is the joining work at a high place, can be performed near the column, and the scaffold can be easily secured. Intermediate joints can also be joined using the shorter steel beam split as a scaffold. In addition, since the beam is joined to the column with the end plate,
Unlike the case of using split tees, there is no cross-sectional loss due to bolt holes at the beam end where a large load acts, so it is not necessary to use a steel material with a large cross-sectional shape for the beam, and the overall steel frame weight Can be reduced and it is economical. The joint by the intermediate joint can have a rigid joint structure as needed, and is slightly away from the end of the beam, so that there is little problem of sectional loss due to the bolt hole. In the case where the intermediate joint is to be bolt-joined with a side plate that overlaps the steel beam divided bodies on both sides, the entire joint can be achieved only by the bolt tightening operation. When the intermediate joint is composed of a bolt joint part that is bolted with a splint plate and a weld joint part that welds the steel beam splitters on both sides to each other, the bolt joint part is joined first to increase the height. Welding work of welded joints in places can be easily performed. If the steel column is a rectangular steel pipe and the end plate is connected to the steel column by one-side bolts, the steel beam column can be converted to a steel column simply by forming bolt insertion holes in the steel pipe column with a closed cross section. Easy bolt connection. When the receiving member on which the end plate of the steel beam is mounted is attached to the steel column with one-side bolts, by temporarily placing the end plate on the receiving member,
Bolt joining of the steel beam divided body to the steel column can be easily and accurately performed.

[0009] The joining method according to the third and fifth aspects of the present invention.
In the case of (1) , since the bolt connection of the shorter steel beam divided body to the steel column is performed by the ground work, the number of steps of the connection work at high places can be reduced, and the work efficiency is good. The joining work of the two steel beam divided bodies by the intermediate joint is performed at a high place. At this time, the short steel beam divided body that has been joined in advance can be used as a scaffold, and the work is easy to perform. In addition, since the shorter steel beam divided body was cut near the end of the steel beam, the position of the intermediate joint was near the steel column, and when used as a scaffold, the safety of workers was ensured. Easy.

In the case of the joining method according to the fourth and sixth aspects of the present invention, the steel beam is divided near both ends.
Since the short steel beam splitters on both sides are joined to the steel column by the groundwork, the joint work at high places is limited to the work of the intermediate joint, and the work is unified. In addition, even when the length of the steel beam is variously different, the length of the shorter steel beam divided body can be set to a fixed size. Therefore, even if the steel beam is divided into two places, the joining operation can be performed efficiently. Claim
Bonding how the invention of claim 5 and claim 6, namely in the above bonding method, per joining plurality of short steel beam splitting member extending in each direction on the same steel column, scratch Chikumi of steel beam split body In the case of performing only the steel beam divided part of the part and performing the rest after the steel column is erected, the joint work of the remaining steel beam divided body of the column can be performed using the reinforced steel beam divided body as a scaffold. Even if only one of the steel beams divided in the four directions of the columns is laid,
Alternatively, the number may be two or three. In this way, by dividing the truss and the general construction, when laying the steel beam divided body on the laid steel column, the steel column is turned upside down when joining the steel beam divided body on the ground side Eliminates the need for directing work.

In the case of the joining method according to the third and fourth aspects of the present invention, in the method for joining each of the end plate type steel structures, the intermediate joint is joined by bolts with an attachment plate to lift the steel beam. Temporarily join the intermediate joints with thin bolts before connecting the steel beam to the steel column, and then replace the bolts of the intermediate joint with bolts of an appropriate diameter. The steel beams can be joined to the columns, and the steel beams can be easily inserted between the columns by absorbing the construction error between the columns with the intermediate joint.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In the joint structure of the end plate type steel frame structure of this embodiment, a steel beam 18 having end plates 17 at both ends is interposed between adjacent steel columns 16, 16, and the end plates 17 at both ends are attached to each steel column 16. It is bolted. One-side bolt 1 is used for this bolt. The steel column 16 is formed of a square steel tube column. The steel beam 18 is made of H-shaped steel, and is divided into two near one end. 18A shorter steel beam splitter
It is desirable that the length of the steel beam 18 be uniform regardless of the length thereof. Both steel beam split bodies 18A, 18
The divided portions of B are joined to each other by an intermediate joint 19. The intermediate joint 19 has a friction bolt joint structure using an upper attachment plate 21, a lower attachment plate 22, and a side attachment plate 23.
The upper attachment plate 21 overlaps over the upper surfaces of the upper flanges 18Aa, 18Ba of the two steel beam splitters 18A, 18B,
It is joined to both steel beam splitters 18A and 18B by high strength bolts 20. The lower attachment plate 22 is composed of two steel beam splitters 18A, 1A.
8B, the two steel beam splitters 18A, 18B overlap over the lower surfaces of the lower flanges 18Ab, 18Bb with the high-strength bolts 20.
B. The upper attachment plate 21 and the lower attachment plate 22 are provided on the upper and lower surfaces of the upper flanges 18Aa and 18Ba and the upper and lower surfaces of the lower flanges 18Ab and 18Bb, respectively, as shown in the example of FIG. It is good also as a friction bolt joining structure. The side attachment plates 23 are formed of the webs 18Ac, 18B of the two steel beam splitters 18A, 18B.
c, and are joined to both steel beam splitters 18A, 18B with high strength bolts 20. Both steel beam split bodies 18A,
A gap G of about 5 mm is provided between the divided portions of 18B. This gap G facilitates the work of lifting the steel beam 18 and interposing it between the steel columns 16, and absorbs errors in the construction between the two steel columns 16, and errors in the length of the steel beam 18. Is done. In this embodiment, ordinary bolts may be used for bolt joining of the end plate 17 to the steel pipe column 16 irrespective of the one-side bolt 1. In this case, a nut is previously attached to the inner surface of the steel pipe column 16 by welding or the like.

FIG. 2 shows an example of the one-side bolt 1 used in the embodiment. The one-side bolt 1 has a pin 2, a valve sleeve 3, a grip sleeve 4, a shear washer 5, a receiving washer 15, and a nut 6, which are sequentially covered on the outer periphery of the pin 2 from the pin head 2 a side. And The pin 2 has a pin head 2a slightly larger in diameter than the pin diameter at the tip, a break groove 2d in the middle of the screw part 2b following the round shaft part 2e, and a short pin tail 2c following the screw part 2b. Is provided. The valve sleeve 3 is formed of a softer material than the grip sleeve 4 and is capable of being plastically deformed outward in a flange shape by a load of an axial force. Receiving washer 1
5 is formed in the inside diameter that the grip sleeve 4 can enter,
In addition, an annular concave portion 15a into which the outer peripheral portion of the shear washer 5 is fitted is provided on the side surface on the pin head side. The shear washer 5 has an inner peripheral portion engaged with the end surface of the grip sleeve 4 and shears with a predetermined axial force. In this example, the round shaft portion 2e of the pin 2 is used.
The distal portion 2e ₁ step portion 2 than the base end side portion 2e ₂ a
through f slightly to a larger diameter, there the inner diameter of the grip sleeve 4 as a smaller diameter than the distal portion 2e _1.

The fastening operation of the one-side bolt 1 can be performed using a rotary electric tightening tool (not shown). That is, with the pin tail 2c held by the tightening tool, the nut 6 is engaged with the box-shaped nut engaging portion of the tool.
Tighten. As a result, a compressive force acts between the pin head 2a and the shear washer 5, whereby the shear washer 5, the grip sleeve 4, and the valve sleeve 3 are clamped. Start to deform. When the nut 6 is further tightened, the shear washer 5
Is sheared, and the grip sleeve 4 enters the receiving washer 15 together with the sheared inner diameter portion 5 a of the shear washer 5. As a result, when the flange-shaped deformed portion 3a of the valve sleeve 3 engages with the back surface of the rectangular steel tube column 16, the axial force is tightened between the nut 6 and the flange-shaped plastic deformed portion 3a by the tube wall of the column 16 and the end plate 17. Is introduced. When the nut 6 is further tightened and rotated, the pin tail 2 is rotated in a state where a predetermined axial force is introduced.
c breaks at the breaking groove 2d (FIG. 2B).

FIG. 3 shows an example of a joining procedure of the steel structure. In this example, the shorter steel beam splitter 18A is bolted to the steel column 16 by the end plate 17 at the construction site, and the steel frame 16 thus assembled is used.
Then, a steel column 16 next to it is erected (FIG. 3A).
Thereafter, the longer steel beam divided body 18B is lifted by a heavy machine such as a crane (FIG. 3B), and the steel beam divided body 18B is lifted.
B is connected to the corresponding steel column 16 with the one-side bolt 1, and the two steel beam divided bodies 18
A and 18B are joined by the intermediate joint 19 as shown in FIG. In this case, since the shorter steel beam splitter 18A is previously laid on the steel column 16, the steel column 16 of the steel beam 18 is used.
Part of the bolting work to the ground can be done on the ground,
As a result, safety is improved and work becomes easier. In this work, since a slight gap G is set in the divided portions of the two steel beam divided bodies 18A and 18B, the adjacent steel columns 16 and 1 are separated.
Even if there is some construction error between the six steel beam splitters 18A, the longer steel beam splitter 18B suspended by a heavy machine between the end of the shorter steel beam splitter 18A and the adjacent steel column 16 can be easily formed. Can be plugged in. The joining work by the intermediate joint 19 will be performed at a high place. At this time, the shorter steel beam divided body 18A that has been joined in advance can also be used as a scaffold,
Work is easy. In addition, since the shorter steel beam splitter 18A is cut in the vicinity of the end of the steel beam 18, the position of the intermediate joint 19 is near the steel column 16, so that when it is used as a scaffold, it is difficult for the worker to use it. It is easy to ensure safety.
The joining of the shorter steel beam splitter 18A to the steel column 16 is performed on the ground at the site as described above, so that the steel column 16 can be transported from a factory or the like to the site in a single state of the steel column 16. There is no protruding object such as the one, and the transportation efficiency is good. In this connection, in the joining method of this embodiment, a plurality of shorter steel beam splitters 18A are joined at substantially the same height position of the same steel column 16 so as to extend in different directions, respectively.
A part of the steel beam splitters 18A may be joined to the steel columns 16 with a ground structure, and the remaining steel beam splitters 18A may be joined after the steel columns are installed. For example, for the beam joints of the steel column 16 that joins the steel beam splitters 18A that are short in four directions, one to three locations are used as the groundwork. In this case, the joining operation of the steel beam divided body 18A to be joined by the remaining general erection is performed by using the reinforced steel beam divided body 18A or the steel beam divided body 18A previously joined by the general erection as a scaffold. To perform the joining operation. In addition, all the steel beam divided bodies 18A in four directions
In the case of using a steel structure, the steel columns 16
When the steel beam splitter 18A on the ground side is joined, it is necessary to turn the steel column 16 upside down. However, by joining a part in a general construction, the above-mentioned inversion work becomes unnecessary, and work efficiency is improved. Become. The same applies to the bonding method of the embodiment shown in FIG.

FIG. 4 shows another example of the joining procedure of the steel structure. In this example, first, the adjacent steel columns 16, 16 are erected as shown in FIG. Before the lifting, the steel beam 18 is divided into two steel beam splitters 18A, 18A depending on the ground structure.
The divided part of B is temporarily joined by the intermediate joint 19. This temporary joining is performed by using a bolt 24 that is thinner than the appropriate diameter for the bolt hole diameter as the bolt of the intermediate joint 19. For example, when the appropriate diameter is 16 mmφ, a bolt 24 of 12 mmφ is used for temporary joining. The temporarily joined steel beam 18 is lifted between the steel columns 16 on both sides by a heavy machine as shown in FIG. 4B, and bolts to the steel columns 16 of the end plates 17 at both ends as shown in FIG. Perform bonding.
Finally, the temporary joint bolt 24 of the intermediate joint 19 is replaced with a high-strength bolt 20 having an appropriate diameter, and
The divided portions of 8A and 18B are fully joined by an intermediate joint 19. In this case, the temporary joining bolt 24 of the intermediate joint 19 is
After one end plate 17 is bolted to the steel column 16, the tightening may be loosened, and the other end plate 17 may be bolted to the steel column 16 in the loosened state.
Thereafter, the bolt 20 is replaced with a bolt having an appropriate diameter. In the case of this joining method, since both steel beam splitters 18A and 18B are temporarily joined with thin bolts 24 and lifted between the steel columns 16 and 16 on both sides, there is a construction error in the interval between the steel columns 16 and 16. Also absorbed by the play of the bolt holes, the two steel columns 1
The steel beam 18 can be easily inserted between 6,6.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, an H-shaped steel column 26 is used in place of the steel tube column 16 in the embodiment of FIG. In this case, the steel column 26 is not a closed section, but a flange 26a of H-section steel.
Since the end plates 17 at both ends of the steel beam 18 are joined by bolts, a high-strength bolt 27 is used here instead of the one-side bolt 1 of the embodiment. Other configurations are the same as those of the embodiment of FIG. The joining operation can be performed in the same manner as shown in FIGS.

FIGS. 6A and 6B show a third embodiment of the present invention. In this embodiment, the intermediate joint 29 is attached to the attachment plate 2.
3, the bolted joint 23 'and the welded joint 28A, 2
8B. That is, in this embodiment, instead of the upper and lower side attachment plates 21 and 22 in the intermediate joint 19 in the embodiment of FIG. 1, the upper and lower flanges 18A and 18Ba and the lower flange 18 are used.
Weld joints 28A and 28 for on-site welding between Ab and 18Bb
B. The configuration in which the side attachment plate 23 is overlapped with the webs 18Ac, 18Bc of the two steel beam splitters 18A, 18B and bolted together, and other configurations are the same as those in the embodiment of FIG. The joining operation can be similarly performed by the procedure shown in FIG. In this case, by joining the bolt joint portion 23 'with the attachment plate 23 first and then joining the weld joint portions 28A and 28B, welding work at a high place can be easily and accurately performed. As shown in FIG. 6C, the lower attachment plate 2 of the intermediate joint 19 in the embodiment of FIG.
2, the intermediate joint 39 may be formed by welding only between the upper flanges 18Aa, 18Ba of the two steel beam splitters 18A, 18B. In this embodiment, the steel column 16
May be applied to the case where is made of H-section steel.

FIG. 7 shows a fourth embodiment of the present invention. This embodiment is different from the embodiment of FIG. 1 in that the intermediate joint 19 includes a bolt joint 49A and a weld joint 49B.
It is what constituted. Bolt joint 49A of this example
Is the upper flange 18A of both steel beam split bodies 18A and 18B.
a, a pair of upper attachment plates 21 over the upper and lower surfaces of 18Ba.
A, 21B are piled up, and both steel beam divided bodies 1
8A and 18B, and both steel beam split bodies 18
A, a pair of lower attachment plates 22A, 22B are overlapped over the upper and lower surfaces of the lower flanges 18Ab, 18Bb of the lower flanges 18Ab, 18Bb, and are joined to the two steel beam splitters 18A, 18B with high strength bolts 20. The weld joint 49B is connected to the bolt joint 4
After joining of 9A, the whole between the opposing end faces of both steel beam split bodies 18A, 18B is welded. Other configurations are the same as those of the embodiment of FIG. The joining operation can be performed in the same manner as shown in FIGS. This embodiment is also applicable to the case where the steel column is an H-section steel.

FIG. 8 shows a fifth embodiment of the present invention. The steel structure joining structure of this embodiment is different from the embodiment of FIG. 1 in that a steel beam 18 having end plates 17 at both ends is provided.
It is divided in the vicinity of both ends and divided into three steel beam divided bodies 18A,
18C, 18A, and the two ends of the intermediate steel beam splitter 18C are connected to the short steel beam splitters 18A, 18A on both sides.
9 joined together. Here, the intermediate joint 19
Is similar to that of the embodiment of FIG. 1, but may be intermediate joints 29, 39, and 49 as in the embodiment of FIGS.
Other configurations are the same as those of the embodiment of FIG. In the joining work of this joining structure, the short steel beam splitters 18A, 1B on both sides are used.
The bolt connection to each steel column 16 by the 8A end plate 17 is performed by framing at the construction site, and the laid steel columns 16 are erected (FIG. 8A). Thereafter, the intermediate steel beam splitter 18C is lifted by a heavy machine (FIG. 8).
(B)), both ends of the intermediate steel beam splitter 18C are joined to the steel beam splitters 18A, 18A on both sides by the intermediate joint 19 (FIG. 8C). In the case of this joining method, the steel beam 1
8 is divided in the vicinity of both ends, and the short steel beam splitters 18A on both sides are joined to the steel column 16 by the groundwork, so that the joining work at high places is only the work of the intermediate joint 19, and Joining work is unified. Further, even when the lengths of the steel beams are variously different, the joining operation is unified in various steel frame structures by standardizing the length of the shorter steel beam splitter 18A. Therefore, the steel beam 18
Even if the number of divisions is two, the joining work can be performed efficiently and the factory productivity of the steel beams 8 is good.

FIG. 9 (A) shows an embodiment of FIG. 1 in which a receiving member 30 for mounting an end plate 17 of a steel beam 18 on a square steel tubular column 16 is attached with a one-side bolt 1. The receiving member 30 is made of an angle material. In the embodiment shown in FIG. 1, the shorter steel beam splitter 18A is laid on the steel column 16, so that the longer steel beam splitter 18 to be lifted can be lifted.
The receiving member 30 may be attached only to the steel column 16 to which the B end plate 17 is joined. The bolt insertion hole of the square steel tube column 16 to which the receiving member 30 is attached with the one-side bolt 1 is formed in advance at a factory together with other bolt insertion holes for joining the end plate, and the receiving member 30 is attached in the ground. By providing the receiving member 30 in this manner,
The accuracy of the mounting height of the steel beam divided body 18B to the steel column 16 is improved, and the workability of the joining operation is improved. Receiving member 3
As described above, the one-side bolt 1 is used for the mounting of No. 0, so that the mounting to the square steel pipe column 16 can be easily performed. The workability can also be improved when a plate-shaped receiving member 30 such as an iron plate is attached to the steel column 16 by welding or the like as shown in FIG. 9B instead of the receiving member 30 shown in FIG. 9A. Effects such as improvement can be obtained.

FIG. 10 shows a structure in which a receiving member 31 made of a pipe material cut short as shown in FIGS. 10A and 10B is provided in place of the receiving member 30 of FIG. 9A. The receiving member 31 made of a pipe material is attached to the one-side bolt 1 attached to the tube wall of the square steel tube column 16 by covering the space between the receiving washer 15 and the square steel tube column 16. The length of the receiving member 31 is slightly larger than the thickness of the end plate 17 at the end of the steel beam 18, and a pair of the receiving members 31 are arranged side by side with respect to one end plate 17. As shown in FIG. 10C, the receiving washer 15 of the one-side bolt 1 may have a tapered surface that opens toward the outer periphery on the back surface facing the receiving member 31 side. Thus, the end plate 17 at the end of the steel beam 18 can be smoothly placed on the receiving member 31 using the back surface of the receiving washer 15 as a guide surface.

FIG. 11 shows an example in which the receiving member 31 of FIG. 10 is provided, and one plate 32 is provided so as to straddle a pair of one-side bolts 1 provided side by side. The plate 32 is a receiving washer 1 for the one-side bolt 1.
5 has a larger vertical dimension than the diameter dimension, and is interposed between the receiving washer 15 of the one-side bolt 1 and the receiving member 31. In addition, in the example of FIGS.
Is a column such as an H-section steel having a non-closed structure, the receiving member 3 can be fixed with a normal high-strength bolt regardless of the one-side bolt 1.
0, 31 and 32 may be attached to the pillar 16.

FIG. 12 shows still another embodiment. This example is an example of a joint structure of an end plate type steel structure using a round steel pipe for the steel column 16. End plate 1
Reference numeral 7 denotes an arcuate cross section having an inner peripheral surface having a curvature capable of making surface contact with the outer surface of the round steel pipe column 16 and is welded to the end of the steel beam splitter 18A on the fixed-size side. Other configurations are the same as those in the example of FIG. As described above, even when the round steel pipe is used for the steel column 16, the joining method shown in each of the above embodiments can be similarly employed. In particular, when the steel column 16 is a round steel pipe, it is impossible to interpose an end plate type beam between the columns after the column is erected with a conventional integrated steel beam. This makes it feasible.

[0025]

According to the joint structure of a steel structure of the present invention, a steel beam having end plates at both ends is divided near an end, and the steel beam divided bodies on both sides of the divided portion are joined to each other. Since the intermediate joint is provided, the joint work can be performed with good workability by absorbing the error of the length of the beam and the construction error of the column by using the intermediate joint while using the steel plate of the end plate type. Also, since the beam is joined to the column in the form of an end plate, there is no cross-sectional loss due to bolt holes at the end of the beam compared to split tee joining, and a solid structure can be achieved.
In addition, the weight of the steel frame is reduced as a whole, which is economical. Further, since the steel column can be transported from the factory to the site without any projecting object such as a bracket, the transportation efficiency is good and the economy is economical. In addition , since the bolts that join the end plate to the steel column are one-side bolts, the steel beam column can be divided into steel beam columns simply by forming bolt insertion holes while using a square steel pipe with a closed cross section. Can be bolted to
In the case of the invention of claim 2 , since the receiving member on which the end plate of the steel beam is placed is joined to the steel column with a one-side bolt, the end plate is temporarily placed on the receiving member, so that the steel beam split body is provided. Can easily be bolted to the steel column. Further, the receiving member can be easily attached even though the steel column is a square steel tube column having a closed cross section. According to a third aspect of the present invention, there is provided a method for joining a steel structure, wherein the shorter steel beam divided body is joined to a steel column by an end plate by a ground work at a construction site.
Since this erected steel column and the next column will be built,
The joining work at high places can be reduced, and the work is safe and easy. In the case of the joining method according to the fourth and sixth aspects of the invention, the steel beam is divided in the vicinity of both ends, and the short steel beam divided bodies on both sides are joined to the respective steel columns by end plates by the end structure. Because it was performed, even if there were many divisions, there was little problem of an increase in the number of work steps because the terrain could be formed.
On the other hand, the work of joining columns and beams at high altitudes can be unified by using only intermediate joints. Therefore, the workability is good and the work quality is improved. In the case of the joining method according to the third and fourth aspects of the present invention, the intermediate joint is temporarily joined with a thin bolt before lifting the steel beam, and after joining the steel beam to the steel column, Since the bolts are replaced with bolts of the appropriate diameter, all the divided parts of the steel beam can be lifted at a time and joined to the steel column, and the construction error between the columns is absorbed by the intermediate joint and the steel beam is inserted between the columns. Can be easily plugged in. Therefore, workability is good and firm joining can be performed.
In the case of the joining method according to the fifth and sixth aspects of the present invention, when joining a plurality of short steel beam splitters extending in each direction to the same steel column, a ground is formed on a part of the steel beam splitter, Since the rest is performed after the steel columns are built, when joining the steel beam splitters that are on the ground side of the steel columns that are laid down at the time of laying, work such as turning the steel columns upside down is required. It becomes unnecessary. In addition, when joining the remaining steel beam divided bodies in a general construction method, the steel beam divided body that has been laid can be used as a scaffold, so that workability is good.

[Brief description of the drawings]

FIG. 1A is a front view of a joint structure of an end plate-type steel structure according to a first embodiment of the present invention, FIG.
FIG. 2 is an enlarged front view of the main part.

FIGS. 2A and 2B are cross-sectional views showing states before and after fastening of a joint by a one-side bolt in the joint structure, respectively.

FIG. 3 is an explanatory view showing an example of a joining procedure of the steel structure.

FIG. 4 is an explanatory view showing another example of the joining procedure of the steel structure.

FIG. 5A is a front view of a joint structure of a steel frame structure according to a second embodiment of the present invention, and FIG. 5B is an enlarged front view of a main part thereof.

FIG. 6A is a front view of a joint structure of a steel structure according to a third embodiment of the present invention, FIG. 6B is an enlarged front view of a main part thereof, and FIG. 6C is an intermediate joint of the joint structure. It is a principal part enlarged front view which shows a modification.

FIG. 7A is a front view of a joint structure of a steel structure according to a fourth embodiment of the present invention, and FIG. 7B is an enlarged front view of a main part thereof.

FIG. 8 is an explanatory view showing a joining procedure of a steel structure according to a fifth embodiment of the present invention.

FIG. 9A is an enlarged front view of an essential part showing an example in which an end plate receiving member is attached to a steel column in the first embodiment, and FIG. 9B is a diagram showing another end plate receiving member attached to the steel column. It is a principal part enlarged front view which shows the example which attached.

10A is an enlarged front view of a main part of a steel column showing an example in which another end plate receiving member is mounted on the steel column in the first embodiment, and FIG. 10B is a cross-sectional view of the receiving member mounting portion. FIG. 7C is a cross-sectional view of a modified example of the receiving member mounting portion.

FIGS. 11A and 11B are an enlarged front view and a side view of a main part of a steel column to which a third example of the receiving member is attached, and FIGS.
FIG. 4 is a sectional view of the receiving member mounting portion.

FIGS. 12A and 12B are a partially broken plan view and a partial side view of a steel structure joint structure according to a sixth embodiment;

FIG. 13 is a front view of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... One side bolt, 16, 26 ... Steel column, 17 ... End plate, 18 ... Steel beam, 18A, 18B, 18C
... Steel beam splits, 19,29,39,49 ... Intermediate joints,
21, 21A, 21B ... upper attachment plate, 22, 22A, 2
2B: Lower attachment plate, 23: Side attachment plate, 23 ': Bolt joint, 24: Temporary joining bolt, 28A, 28B: Weld joint, 30, 31, 32 ... Receiving member, 49: Intermediate joint, 49A ... Bolt joint, 49B ... Weld joint

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04B 1/24

Claims (6)

(57) [Claims] 1. A steel structure in which steel beams having end plates at both ends are interposed between adjacent steel columns, and the end plates at both ends are bolted to the respective steel columns. It is assumed that it has been divided in the vicinity, and the steel beam divided bodies on both sides of the division are joined to each other with an intermediate joint
The steel column is a square steel pipe, and the end plate is
A bolt to be joined to the steel column is a one-side bolt,
This one-side bolt is attached to the pin and the outer circumference of this pin.
Valve sleeves
Cap sleeve, shear washer, receiving washer, and nut.
Having a pin
Compression force acts between the head and the shear washer
Gold, grip sleeve and valve sleeve sandwiched
And the valve sleeve is plastically deformed outward in the form of a flange.
The washer shall shear, and the pin shall have a pin diameter at the tip.
Screw head with a slightly larger pin head than the round shaft
With a break groove in the middle, and the valve sleeve has a grip sleeve.
Formed of a softer material than the
It can be plastically deformed in a flange shape to the side, and the shear washer is the inner circumference
Part is engaged with the end surface of the grip sleeve and sheared with a predetermined axial force
The joint structure of the end plate type steel structure. 2. A claims mounted in one side bolt receiving member for mounting the end plate of said steel beam to the steel columns
Item 2. A joining structure of an end plate type steel structure according to Item 1 . 3. A steel beam having end plates at both ends.
Is interposed between adjacent steel columns, and the steel beam is
It was assumed that the steel beams were divided by
The end plates at both ends are joined to each other
This is a method for joining steel structures that are bolted to columns,
To the steel column by the end plate
Joining was done by terrain at the construction site,
The process of building a steel column and its neighbors, and the longer iron
Lift the trabecular split with heavy equipment, and
Bolted to the adjacent steel column and
Joining the trabecular bone splits with the intermediate joints, wherein the intermediate joints are joined by bolts penetrating the side plates and the side plates and steel beam splits that overlap over the corresponding steel beam splits. A process of temporarily joining the intermediate joint before the installation of the steel beam by using a bolt smaller than an appropriate diameter for a bolt hole diameter for the bolt of the intermediate joint; and A method for joining an end plate-type steel structure, comprising: a step of lifting between pillars to join bolts to steel beams of end plates at both ends; and thereafter, replacing a bolt of the intermediate joint with a bolt having an appropriate diameter. 4. A steel beam having end plates at both ends.
Is interposed between adjacent steel columns, and the steel beams are
The two ends of the middle steel beam splitter shall be
Join the short steel beam splitters on both sides with an intermediate joint
End plates at both ends of trabecular bone are bolted to each steel column
Method of joining steel structures, where short steel beams on both sides
Construction of connection to each steel column by end plate of divided body
The process of on-site terrain and these terrains
The process of building a steel column and the middle steel beam split with heavy machinery
Lift the two ends of this intermediate steel beam split
Joining the trabecular bone to the trabecular bone split with the intermediate joint, wherein the intermediate joint is joined with a supporting plate overlapping between the corresponding steel trabecular beam divided members and a bolt penetrating the additional plate and the steel beam traverse. A process of temporarily joining the intermediate joint before the installation of the steel beam by using a bolt smaller than an appropriate diameter for a bolt hole diameter for the bolt of the intermediate joint; and A method for joining an end plate-type steel structure, comprising: a step of lifting between pillars to join bolts to steel beams of end plates at both ends; and thereafter, replacing a bolt of the intermediate joint with a bolt having an appropriate diameter. 5. A steel beam having end plates at both ends.
Is interposed between adjacent steel columns, and the steel beam is
It was assumed that the steel beams were divided by
The end plates at both ends are joined to each other
This is a method for joining steel structures that are bolted to columns,
To the steel column by the end plate
Joining was done by terrain at the construction site,
The process of building a steel column and its neighbors, and the longer iron
Lift the trabecular split with heavy equipment, and
Bolted to the adjacent steel column and
Joining the trabecular bone splits with the intermediate joint, and joining a plurality of steel beam splits with short ends so as to extend in different directions at substantially the same height position of the same steel column, respectively.
A method of joining an end plate-type steel structure in which a part of a steel beam divided body is joined to a steel column in a truss structure, and the remaining steel beam divided bodies are joined after the steel column is installed. 6. A steel beam having end plates at both ends.
Is interposed between adjacent steel columns, and the steel beams are
The two ends of the middle steel beam splitter shall be
Join the short steel beam splitters on both sides with an intermediate joint
End plates at both ends of trabecular bone are bolted to each steel column
Method of joining steel structures, where short steel beams on both sides
Construction of connection to each steel column by end plate of divided body
The process of on-site terrain and these terrains
The process of building a steel column and the middle steel beam split with heavy machinery
Lift the two ends of this intermediate steel beam split
Joining the trabecular bone split to the trabecular bone split with the intermediate joint, and joining a plurality of short-end steel beam bifurcations so as to extend in different directions at substantially the same height position of the same steel column, respectively.
A method of joining an end plate-type steel structure in which a part of a steel beam divided body is joined to a steel column in a truss structure, and the remaining steel beam divided bodies are joined after the steel column is installed.