JP3671299B2 - Mechanical joint method of steel structure column beam joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a method for joining relatively small and steel-framed columns and beams by a mechanical joint using a tenon and a plug.
[0002]
[Prior art]
Conventionally, bolting and welding are generally used as means for connecting a steel column and a beam.
[0003]
However, when good appearance design is required, it is not preferable to perform bolting to join the column and beam because the head, shaft, or nut of the bolt is exposed.
[0004]
When welding is performed for the connection between a steel-structured column and a beam, the dimension between the cores of the column or the dimension between the beams tends to be distorted due to shrinkage of the weld metal. As a preventive measure, columns and beam members having dimensions in which the shrinkage of the weld metal is predicted in advance are manufactured. However, it is difficult to predict the dimensional change, and it is difficult to realize column beam connection with high dimensional accuracy.
[0005]
In addition, weld beads are always generated in welding, which is not preferable in terms of appearance design. Grinding and polishing with a grinder or the like is performed as post-processing, but this requires considerable labor and time, and noise problems also occur. To do.
[0006]
Moreover, welding cannot be done during rain or strong winds, so it is avoided at construction sites.
[0007]
2. Description of the Related Art Conventionally, a method of connecting a column and a beam with a mechanical joint using a tenon and a plug is mainly known as a wooden frame structure.
For example, Patent Documents 1 and 2 disclose that a tenon with a through-hole of a wooden frame structure and a beam member (horizontal member) spanned between the pillars and the tenon and each of the tenon A method of connecting with a mechanical joint by a bayonet that connects a beam material is disclosed.
[0008]
Next, Patent Documents 3 and 4 disclose a connection method in which a composite eccentric ring formed by combining a plurality of eccentric rings and a plate glass used for a curtain wall is adopted as a positional deviation adjusting mechanism.
[0009]
Further, in Patent Document 5, a composite eccentric ring, which is a combination of two eccentric rings, is used as a position adjustment mechanism for connecting a vertical plate of a building such as a glass plate of a glass window and a structure supporting the same. A connecting device is disclosed.
[0010]
[Patent Document 1]
Japanese Patent Publication No. 4-23933 [Patent Document 2]
Japanese Patent Publication No. 4-23934 [Patent Document 3]
JP 2000-309994 A [Patent Document 4]
Japanese Patent Laid-Open No. 2002-213036 [Patent Document 5]
Japanese Patent No. 3270507
[Problems to be solved by the invention]
The method of connecting a relatively small steel column and beam with a mechanical joint using a tenon and a plug can improve the above-mentioned poor design of the bolting and also has the above-mentioned problems of welding. Can be avoided.
[0012]
As described above, in a wooden frame structure, it is widely known that a column and a beam are connected by a mechanical joint using a tenon and a plug. However, as can be seen in the mechanical joint methods of Patent Documents 1 and 2, since wood is easy to process, the degree of processing of beams and columns is high, and it is extremely difficult in the case of steel columns and beams. In many cases, it is not possible to divert. Moreover, in the structure of the said patent documents 1, 2, it is a structure where the cross-sectional defect | deletion of a column is too large and it is hard to ensure the reliability on intensity | strength. The structure cannot be expected to improve dimensional accuracy.
[0013]
Next, the techniques disclosed in Patent Documents 3 to 5 have a focus on the application of the composite eccentric ring, but the technique relates to the plate mounting structure, and there is no point to be seen in the application to the column beam connection.
[0014]
It is an object of the present invention to connect a relatively small and steel column and beam by a mechanical joint method using a tenon and a spigot without using the above-mentioned problematic bolting and welding.
[0015]
The next object of the present invention is excellent in structural stability in terms of strength and rigidity, sufficiently high in dimensional accuracy, relatively easy to process and easy to implement, It is an object of the present invention to provide a mechanical joint method for a steel structure column beam joint that can be easily adjusted.
[0016]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, a mechanical joint method for a steel structure column beam joint according to the invention described in claim 1 is:
In a method of joining steel columns and beams with a mortise and a mechanical joint with a stopper,
Providing a tenon hole in the axial direction on the end face of the column coupled vertically, and providing a plug hole penetrating in a direction perpendicular to the tenon hole;
Providing a tenon hole whose center coincides with the tenon hole of the column in the beam sandwiched between the end faces of the upper and lower columns with a diameter substantially equal to the outer diameter of the composite eccentric ring;
Fit the lower end of the tenon into the tenon hole of the lower column, and fix the tenon with the insertion plug inserted into the insertion hole for the lower column,
The mortise of the beam is passed through the tenon, and the outer diameter of the composite eccentric ring and the outer diameter of the tenon are adjusted in advance so as to absorb errors such as the construction of the dimensions between the cores of the columns. Combine the inner diameter part of the caliber that is almost equal to
The tenon hole of the upper column is fitted into the upper end of the tenon, and the tenon is fixed by the insertion plug inserted into the insertion hole for the upper column.
[0017]
A mechanical joint method of a steel structure column beam joint according to the invention described in claim 2 is:
In a method of joining steel columns and beams with a mortise and a mechanical joint with a stopper,
Providing a tenon hole in the axial direction on the end face of the column coupled vertically, and providing a plug hole penetrating in a direction perpendicular to the tenon hole;
Beams that are sandwiched between the end faces of the upper and lower columns and butt-joined are formed with phase-separated joints that are notched to halve the vertical thickness at each butt end. A tenon hole is provided on a common center line, one tenon hole is provided with a diameter substantially equal to the outer diameter of the composite eccentric ring, and the other tenon hole is provided with a diameter substantially equal to the outer diameter of the tenon.
Fit the lower end of the tenon into the tenon hole of the lower column, and fix the tenon with the insertion plug inserted into the insertion hole for the lower column,
A composite eccentric in which a joint is formed through a tenon hole at the end of the beam to the tenon, and the dimension is adjusted in advance so as to absorb an error in the construction between the cores of the pillars in the one tenon hole. Combining the outer diameter part of the ring and the inner diameter part of the caliber approximately equal to the outer diameter of the tenon, and fitting them into the gap between the tenon and the tenon hole,
The tenon hole of the upper column is fitted into the upper end of the tenon, and the tenon is fixed by the insertion plug inserted into the insertion hole for the upper column.
[0018]
The invention described in claim 3 is a mechanical joint method of a steel structure column beam joint according to claim 1 or 2,
A gap is formed between the end surfaces of the upper and lower columns and the upper and lower surfaces of the beam so as to keep them in non-contact.
[0019]
The invention described in claim 4 is a mechanical joint method of a steel structure column beam joint according to claim 2 or 3,
The gap between the end surfaces of the upper and lower pillars is sandwiched between the stepped portions forming the phased joints at the ends of the beams to be butt-joined by the phased joints. Features.
[0020]
The invention described in claim 5 is the mechanical joint method for a steel structure column beam joint according to claim 1 or 2,
The tenon is formed in a columnar shape that fits into the tenon hole of the beam, and the part that fits in the tenon hole in the upper and lower columns is formed into a flat flat tenon that reduces the cross-sectional defect of the column as much as possible. The tenon hole is also formed as a flat hole into which the flat tenon fits.
[0021]
The invention described in claim 6 is the mechanical joint method for a steel structure column beam joint according to claim 1 or 2,
The insertion plugs inserted into the insertion holes for the upper and lower pillars are characterized in that both ends thereof are fixed with retaining rings.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention shown in the drawings will be described below.
[0023]
1 to 4 show the structure of a mechanical joint of a steel structure column beam joint according to the methods of the inventions of claims 2 to 6, and FIG. 5 is an exploded view of each component of the joint.
[0024]
As shown in FIG. 5, the upper and lower columns 1 and 2 shown in the drawing are steel square columns having a side length of about 120 mm. The beams 3 and 4 to be butt-joined at the positions of the columns 1 and 2 are made of steel squares having a thickness of about 120 mm and a width of about 180 mm. Thus, both the columns and beams are relatively small steel structures. The illustrated beams 3 and 4 are sandwiched between end faces of the upper and lower columns 1 and 2 and butt-joined with phase-joint joints, and are cut out at each butt end so as to halve the thickness in the vertical direction. Phase missing joint portions 3a and 4a are formed.
[0025]
As a method of connecting the columns 1 and 2 and the beams 3 and 4 with a mechanical joint using a tenon 7 and a spigot 10, an axial tenon hole 5 is provided in the end surface portion of the columns 1 and 2 that are connected vertically. A plug hole 6 penetrating in a direction perpendicular to the tenon hole 5 is provided. As an example, the size and shape of the mortise 5 have a depth of 155 mm, and the shape seen in the plane direction is a rectangular hole of 100 mm × 60 mm in length × width. This is to reduce the cross-sectional defects of the columns 1 and 2 as much as possible. The plug hole 6 is provided as a round hole into which the plug 10 having a diameter of 60 mm fits tightly. Each is precisely finished by machining.
[0026]
Tensile holes 8 and 9 whose centers coincide with the tenon holes 5 of the columns 1 and 2 are provided in the phase-separated joint portions 3a and 4a of the beams 3 and 4 sandwiched between the end surfaces of the upper and lower columns 1 and 2, respectively. Yes. This is also precisely finished by machining.
[0027]
The tenon 7 is made of cast steel or the like, and is precisely finished by machining so that the height in the vertical direction is 450 mm and the outer diameter of the cylindrical portion is about 100 mm. The portions that fit into the tenon holes 8 and 9 of the beams 3 and 4 are formed in a cylindrical shape, and the portions that fit into the tenon holes 5 of the upper and lower columns 1 and 2 are formed as a flat flat tenon 7a. The flat tenon 7a is provided with plug-in holes 7b and 7b having the same diameter and the same center as the plug-in holes 6 of the upper and lower columns 1 and 2 in a direction perpendicular to the plane. The end of the flat tenon 7a is rounded into a semicircular shape. This is because the fitting of the columns 1 and 2 into the mortise 5 is made smooth. The plug 10 is also made of cast steel or the like, and is finished with precision by machining.
[0028]
Of the mortises 8 and 9 of the beams 3 and 4, the diameter of the mortise 8 of the upper phase-separated joint 4 a is set to be approximately equal to the outer diameter of the eccentric ring 11, which will be described later. The tenon hole 9 of the phase-separated joint 3a is precisely finished to have a diameter substantially equal to the outer diameter of the columnar part of the tenon 7. In short, the beam 3 on the left side in the figure having the lower phase-joint joint portion 3a is formed by fitting the cylindrical portion of the tenon 7 and the tenon hole 9 with high precision, so that the connecting portion with the columns 1 and 2 is removed. It eliminates rattling and performs dimensional accuracy. On the other hand, in the mortise 8 of the beam 4 on the right side in the figure having the upper phase-break joint portion 4a, composite eccentric rings 11 and 12 described later are installed so that the dimension between the cores of the columns can be adjusted. is there.
[0029]
By the way, the composite eccentric rings 11 and 12 are publicly known, for example, also described in FIG. 4 of Patent Document 5 described above, and the center-to-core dimension of the columns can be adjusted with a structure without rattling. It is precisely finished by machining. As shown in detail in FIG. 6 and FIG. 7, the outer eccentric ring 11 is formed as an eccentric circle having an outer diameter and an inner diameter of about 2 mm. It is formed to be almost equal to the diameter of the mortise hole 8 of the upper phase missing joint portion 4a, and is fitted into the mortise hole 8 with a high fitting tolerance. The inner eccentric ring 12 is also formed as an eccentric circle having an outer diameter and an inner diameter of about 2 mm. The outer diameter is substantially equal to the inner diameter of the outer eccentric ring 11, and has a high fitting tolerance. And are combined by being fitted inside the outer eccentric ring 11. The inner diameter of the inner eccentric ring 12 is formed substantially equal to the outer diameter of the cylindrical portion of the tenon 7, and the cylindrical portion of the tenon 7 is closely fitted with a high fitting tolerance.
[0030]
Therefore, the composite eccentric rings 11 and 12 are relatively rotated as shown in FIGS. 7a to 7d, so that the column core of the beam 4 is fixed to the tenon 7 fixed at the center position of the upper and lower columns 1 and 2. The center-to-core dimension can be adjusted within a range of about ± 4 mm at maximum without rattling.
[0031]
Next, the procedure of the mechanical joint method for a steel structure column beam joint according to claim 2 will be described.
First, a flat tenon 7a at the lower end portion of the tenon 7 is fitted into the tenon hole 5 on the upper end surface of the lower column 2 rising from the bottom, and stood up. Further, a bayonet plug 10 is driven through and penetrated through the bayonet hole 7b of the flat tenon 7a through the bayonet hole 6 of the lower column 2 so that the tenon 7 is fixed upward and coupled to the column 2. To do. As a result, a gap S of about 5 mm is accurately ensured as the positioning effect of the tenon 7 by the bayonet plug 10 between the lower end surface of the column portion of the tenon 7 and the upper end surface of the column 2 (see FIG. 1).
[0032]
Next, it closely fits through the tenon hole 9 of the lower beam 3 having the phase missing joint portion 3a to the cylindrical portion of the tenon 7 standing upward at the upper end of the column 2 as described above. Subsequently, the tenon hole 8 of the upper beam 4 having the phase-separated joint portion 4a is similarly fitted into the tenon 7 and joined by the phase-separated joint as shown in FIG. Next, the composite eccentric rings 11 and 12 are inserted into the gap between the inner diameter surface of the tenon hole 8 of the upper beam 4 and the outer diameter surface of the tenon 7 in advance as shown in FIGS. A combination in a state in which the dimensions are precisely adjusted so as to absorb errors such as the construction of the dimension between the cores is fitted, and the cylindrical part of the tenon 7 is closely passed through the inner diameter part of the inner eccentric ring 12. At this time, a gap T is provided between the distal ends of the beams 3 and 4 and the stepped portions forming the phase-separated joints 3a and 4a, which enables the adjustment of the dimension between the cores of the columns. (See FIG. 1). Therefore, adjustment between the cores of the columns is allowed without difficulty.
[0033]
Finally, the tenon hole 5 of the upper column 1 is fitted into the flat tenon 7a at the upper end of the tenon 7, and further, the plug hole of the flat tenon 7a is inserted through the plug hole 6 of the upper column 1. The insertion plug 10 is driven so as to penetrate through 7b and penetrates it, thereby coupling to the beam. Note that the bayonet plug 10 is fitted with stopper rings 15 at both ends thereof as shown in FIG.
[0034]
As a result, a gap S is formed between the lower end surface of the upper pillar 1 and the upper surface of the beam 4 (see FIG. 1) to keep them in non-contact. Due to these upper and lower gaps S, it is not necessary to generate a binding force or a squeak noise due to friction when the upper and lower columns 1 and 2 are rotated slightly.
[0035]
The above method can be carried out as an all-weather type and can be carried out with high dimensional accuracy since it is equivalent to assembling machined parts. And the external appearance of the completed steel-structured column beam joint part is a simple thing of the grade which can see the end surface of the plug 10 in the edge part of the pillars 1 and 2, and is good in design.
[0036]
The mechanical joint method of the steel structure column beam joint according to the invention described in claim 1 omits the illustration of the embodiment, but the column is coupled at an intermediate position of the beam like an intermediate column. The case relates to a joint method. That is, the beam is continuous as a single object, and the mortise provided through the beam is basically formed to have a diameter substantially equal to the outer diameter of the composite eccentric rings 11 and 12. Others are the same as the invention of the said Claim 2.
[0037]
【The invention's effect】
The mechanical joint method of the steel structure column beam joint according to the invention described in claims 1 and 2 to 6 does not employ any bolting or welding means as described above, and is a mechanical type using a mortise and a spigot. Since it is a method using a joint, the appearance design can be improved and no post-processing such as welding is required. Basically, it is a method of assembling products that have been precisely finished by machining, and it is possible to combine columns and beams with high dimensional accuracy, and to realize column and beam connections without rattling.
[0038]
Furthermore, the mechanical joint method for a steel structure column beam joint according to the present invention is excellent in structural stability in terms of strength and rigidity, can be carried out relatively easily in an all-weather type, and has a good design appearance. In addition to the advantages, the effects such as easy adjustment of the dimension between the column cores can be obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a mechanical joint in which the method of the present invention is performed.
2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view showing components of the mechanical joint in an exploded state.
FIG. 6 is a plan view of a composite eccentric ring.
FIGS. 7A to 7D are plan views showing a procedure for adjusting the dimensions of the composite eccentric ring. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Column 2 Column 3 Beam 4 Beam 5 Mortise hole 6 Plug hole 7 Mortise 8, 9 Mortise hole 10 Plug 11 Outer eccentric ring 12 Inner eccentric ring 3a Beam phase joint 4a Beam phase joint S Gap T Gap 7a Flat tenon 15 Retaining ring

Claims (6)

In a method of joining steel columns and beams with a mortise and a mechanical joint with a stopper,
Providing a tenon hole in the axial direction on the end face of the column coupled vertically, and providing a plug hole penetrating in a direction perpendicular to the tenon hole;
Providing a tenon hole whose center coincides with the tenon hole of the column in the beam sandwiched between the end faces of the upper and lower columns with a diameter substantially equal to the outer diameter of the composite eccentric ring;
Fit the lower end of the tenon into the tenon hole of the lower column, and fix the tenon with the insertion plug inserted into the insertion hole for the lower column,
The mortise of the beam is passed through the tenon, and the outer diameter of the composite eccentric ring and the outer diameter of the tenon are adjusted in advance so as to absorb errors such as the construction of the dimensions between the cores of the columns. The inner diameter part of which is almost the same diameter as the mortar, and fit into the gap between the tenon and the tenon hole. The tenon is fixed by a mechanical joint method for a steel structure column beam joint. In a method of joining steel columns and beams with a mortise and a mechanical joint with a stopper,
Providing a tenon hole in the axial direction on the end face of the column coupled vertically, and providing a plug hole penetrating in a direction perpendicular to the tenon hole;
Beams that are sandwiched between the end faces of the upper and lower columns and butt-joined are formed with phase-separated joints that are notched to halve the vertical thickness at each butt end. A tenon hole is provided on a common center line, one tenon hole is provided with a diameter substantially equal to the outer diameter of the composite eccentric ring, and the other tenon hole is provided with a diameter substantially equal to the outer diameter of the tenon.
Fit the lower end of the tenon into the tenon hole of the lower column, and fix the tenon with the insertion plug inserted into the insertion hole for the lower column,
A composite eccentric in which a joint is formed through a tenon hole at the end of the beam to the tenon, and the dimension is adjusted in advance so as to absorb an error in the construction between the cores of the pillars in the one tenon hole. Combining the outer diameter part of the ring and the inner diameter part of the caliber approximately equal to the outer diameter of the tenon, and fitting them into the gap between the tenon and the tenon hole,
A steel structure column beam joint, wherein a tenon hole of an upper column is fitted into the upper end portion of the tenon, and the tenon is fixed by a bayonet plug inserted into a hole for the upper column of the upper column. Type joint method. The mechanical structure of a steel structure column beam joint according to claim 1 or 2, wherein a gap is formed between the end surfaces of the upper and lower columns and the upper and lower surfaces of the beam in a non-contact manner. Joint method. A gap is provided between the stepped portions forming the phase-separated joint at the end of the beam that is sandwiched between the end faces of the upper and lower columns and butt-joined with the phase-separated joint, so that the dimension between the cores of the columns can be adjusted. The mechanical joint method for a steel structure column beam joint according to claim 2 or 3, wherein The tenon is formed in a columnar shape that fits into the tenon hole of the beam, and the part that fits into the tenon hole of the upper and lower columns is formed into a flat flat tenon that reduces the cross-sectional defect of the column as much as possible. The mechanical joint method for a steel structure column beam joint according to claim 1 or 2, wherein the tenon hole is also formed into a flat hole into which the flat tenon fits. The mechanical joint of a steel structure column beam joint according to claim 1 or 2, wherein both ends of the plug inserted into the upper and lower column plug holes are fixed with retaining rings. Method.

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