JP2000073569A - Splice plate holding jig for connecting beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a splice plate holding jig for a connecting beam which is simple in composition and small in the number of parts, and can easily attach to and detach from each beam and can reuse, and can temporally fixedly hold many splice plates, and can easily and safely attach and detach the jig in a building field. SOLUTION: In the case where the end of a beam 5 formed of I-steel butts against the joint 12 of a column or the like, and both the above parts are bolt- fastened through a splice plate 6 spreading over their butt part, the splice plate 6 is temporally fixedly held until both the fades of a web of the beam 5 are positioned to the joint 12. These splice plate holding jigs 1 are separatedly arranged at a space corresponding to a pair of bolt attaching holes 7 which are previously drilled correspondingly to the web 5b of the beam 5 and the splice plate 6 and arranged vertically, and has a pair of parallel rods 2 which are slidably inserted through each bolt attaching hole 7 and bend at the same curvature; a connecting part for unitedly connecting the ends of both these parallel rods 2; and nuts 4 which are severally threadedly engaged on each other end side of the parallel rod 2 to hold the splice plate 6 on the web 5b of the beam 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, when assembling a steel frame for construction, temporarily attaches and holds a web connecting plate for connecting a beam web made of I-beam to a column connection or the like to a connection position. For holding a beam-attached attachment plate used for this purpose.

[0002]

2. Description of the Related Art In recent years, for example, in the building construction field,
2. Description of the Related Art As a steel structure of a building having low, medium and high layers, a combination of a steel column including a box column having a rectangular cross section and a beam including an I-shaped steel is often used. In this case, the connection between the column and the beam (including the connection between the large beam and the small beam) is generally carried out by bolting. However, in order to improve construction efficiency, welding of the column connection or the connection between the column and the beam is usually performed. The formation of the bolt mounting holes in the holes is performed in advance at the factory stage, and in the construction site, operations such as erection of columns, lifting of beams, and bolt connection between the two are mainly performed.

[0003] In order to connect the column and the beam, the ends of the beam are abutted to the column connection, and the attachment plates extending over the abutting portion of both are attached to both sides of the web and upper and lower flanges of the I-shaped beam. ,
This is done by bolting the attachment plate to both the column connection and the beam. For this purpose, for example, a plurality of rows of common vertical arrangement are formed in the column connections, the webs and flanges of the beams, and the respective attachment plates. Among the contact plates, the contact plate that sandwiches both sides of the web of the beam is a portion where the plate surface is vertical and mainly bears the load, and thus is used as a first bolt fastening portion. In other words, the contact plate sandwiching the upper and lower flanges on both sides has a flat plate surface and a low load burden, and the bolt connection at this portion is sufficient after the flange is fastened.

[0004] Incidentally, after the beam is lifted from the ground to a high place corresponding to the upper floor, it is necessary to manually attach a flange attachment plate to the beam at such a high place because of the work efficiency and safety. Generally, a flange contact plate is mounted before lifting the beam because it is not preferable from the viewpoint of the beam. In this case, what is problematic is how the attachment plate is attached to the beam. That is, in the assembled state of the beam to the pillar, the attachment plate needs to extend over both of them, so that the attachment plate projects from the tip of the beam. However, if an attachment plate is attached to the tip of the beam in this state in advance, the entire length of the beam including the attachment plate will increase, and the beam will come into contact with other members during lifting or the height of the column connection It may be difficult to introduce to the position. Therefore, when lifting the beam, temporarily fix the attachment plate so that it does not protrude from the tip of the beam, release the temporary fixation state after lifting to the connection position, and then remove the attachment plate from the beam for the first time. It is necessary to make it protrude between the pillar connection.

[0005] This work has been a problem for some time, and as a typical example of the technique developed so far, each splicing plate is hinged on both sides of the web of the beam via a shaft. 2. Description of the Related Art There is known a technique of mounting the camera such that it can be rotated. In this technique, first, the contact plate is retracted from the tip of the beam, and after lifting in this state, positioning is performed at the connection height position, and then the contact plate is opened and pivoted to open the column. This is a state across the connection.

[0006]

However, in the above-mentioned prior art, a shaft, a bearing, and a blade are required for a hinge-type rotating support structure, and the structure is complicated, the number of parts is large, and the cost is high. In addition, there is a problem that it takes time to manufacture. Also, a support structure is required for each beam, and since the shaft support portion is fixed to the flange of the beam by welding or the like, they cannot be easily detached after the beam is joined to the column, Extra work and time are spent on the detachment work, and in some cases, danger is involved. Conversely, leaving the device in the mounted state causes waste of materials. Furthermore, it is difficult to attach the rotation support structure at the construction site, etc., so after processing at the factory, it will be transported to the site with it attached to the beam, but the rotation state is required due to vibration and contact etc. in the middle May cause problems, and extra care must be taken in transporting to prevent such problems.

The present invention has been made in view of such circumstances, and has as its object the purpose of having a simple structure, a small number of parts, low cost, and easy manufacture, and It can be easily attached and detached, and can be reused after beam joining, and a small number can temporarily hold a large number of attachment plates, making effective use of materials possible. It can be safely attached and detached, does not require installation at the factory or transport in the mounted state, and eliminates the occurrence of problems associated with conventional transport and the necessity of giving extra care to beam attachment jigs for beam connection Is to provide.

[0008]

In order to achieve the above-mentioned object, according to the present invention, an end of a beam made of I-beam is abutted to a connection such as a column, and an attachment plate extending over the abutting portion of both is joined. A beam connecting splice holding jig for temporarily holding the splicing plate on both sides of the web until the positioning of the splicing plate to the connection, wherein the jig is connected to the web of the beam by the bolt. A pair of bolt mounting holes, which are previously drilled corresponding to the plate, are spaced apart at intervals corresponding to a pair of vertically arranged bolt mounting holes, and are bent at the same curvature slidably inserted into the respective bolt mounting holes. A pair of parallel rod portions, a connecting portion for integrally connecting one end portions of the two parallel rod portions, and each of the parallel rod portions are screwed to the other end sides of the parallel rod portions, and the contact plate is attached to the web of the beam. And a retaining nut for retaining the beam. To provide a jig.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a jig for holding an attachment plate for beam connection according to the present invention.

FIGS. 1 to 3 show the construction of a beam connecting attachment plate holding jig, and FIGS. 4 to 7 show a used state.

As shown in FIGS. 1 to 3, a jig 1 for holding an attached plate for beam connection according to the present embodiment is a pair of arc-shaped parallel rods which are separated at a predetermined interval and are curved at the same curvature. And a connecting rod portion 3 as a connecting portion for integrally connecting one end portions of the two parallel rod portions 2 to each other. The parallel rod portion 2 and the connecting rod portion 3 are integrally formed by bending a round steel bar having a constant diameter. On the other end side of each parallel rod portion 2, a male screw 2a is formed, and a nut 4 can be screwed into each of these male screws 2a.

The diameter and the curvature of the parallel rod portion 2 can be passed through the web 5a of the beam 5 made of I-beam and the bolt mounting holes 7 and 8 formed in the attachment plate 6 as shown in FIG. , Are set to values that allow sliding in the bolt mounting holes 7 and 8. In other words, one flat web-shaped web 5a having a constant thickness and two attached plates 6 attached to both sides of the web 5a are provided with linear bolt mounting holes 7, 8, the diameter and the curvature are set to values at which the curved parallel rod portion 2 can be slidably inserted.

The interval between the parallel rod portions 2 is determined by the number of bolt mounting holes 7 and 8 in a plurality of rows vertically arranged on the web 5a and the attachment plate 6, for example, at equal intervals.
It is set so that it can be freely selected and inserted.

Further, the length of each parallel rod portion 2 is set to a length that can sufficiently penetrate the web 5a and the attachment plate 6, and the curvature of each parallel rod portion 2 is 6 is set to have a curvature that allows smooth rotation on both sides of the web 5a. In other words, the setting is such that the respective attachment plates 6 can be fixed to the left and right by using the parallel rod portions 2 as guides. The rotation range of each attachment plate 6 includes a state in which the web 5a protrudes in a parallel state from the end of the web 5a so as to be finally sandwiched between the column connections (a state shown by a solid line in FIG. 5), At least a range is set up to a state where the tip of each attachment plate 6 is opened to a position where the tip of each attachment plate 6 is retracted from the tip of 5a (the state of the phantom line in FIG. 5).

Next, the operation will be described.

FIGS. 6 (A) to 6 (D) show a beam connecting jig 1 for holding a beam 5 according to the present embodiment from a state in which the beam 5 is carried into a building site.
Is set and lifted, and the process from temporary fixing to the pillar connection is shown.

As shown in FIG. 6 (A), the beam 5 carried in from the factory has attachment plates 6 fixed to both sides of the web 5a by temporary bolts 9. An upper attachment plate 10 is fixed to the upper surface of the upper flange 5 b of the beam 5. The presence or absence of the upper attachment plate 10 is optional.

Next, as shown in FIGS. 6 (B) and 4, the temporary bolt 9 is removed, and the tip of the parallel rod portion 2 of the beam connecting attachment plate holding jig 1 on the male screw 2a side is removed. After being inserted into the bolt mounting holes 7 and 8 of the web 5a and the attachment plates 6, the nut 4 is screwed onto the male screw 2a to prevent the nut from falling off. Then, using the parallel rod portion 2 as a guide, each attachment plate 6 is opened and rotated toward the outer surface side of the web 5a, and the state shown by the imaginary line in FIG.

From this state, as shown in FIG.
The beam 5 is lifted by the wire 10 or the like of the crane,
Of the same cross-section as the beam 5 at a given height (column connection)
The beam 5 is opposed to 12 in a state where the beams abut each other.
In this case, by mounting the upper contact plate 10 on the upper surface of the flange 5b on the upper side of the beam 5 on the upper surface of the flange 12b of the pillar connection 12, positioning in the vertical direction can be easily performed.

Then, using the parallel rod portion 2 as a guide, each attachment plate 6 is closed and rotated toward the tip end of the web 5a (the state shown by the solid line in FIG. 5), and each attachment plate 6 is connected to the column connection 12. Of the web 12a. In this state,
The temporary bolt 13 is inserted through the bolt mounting hole 8 of the attachment plate 6 into the beam 5.
Of the web 5a of the web 5a and the bolt mounting hole 14 of the web 12a of the column connection 12 for fastening.
Further, the nut 4 is removed from the parallel rod portion 2 of the jig 1 for attaching a connecting plate for beam connection, and the parallel rod portion 2 is connected to the web 5 of the beam 5.
Then, the jig 1 for holding the beam is attached and removed.

Thereafter, as shown in FIGS. 6D and 7, the high-strength bolt 15 is connected to the beam 5, the column connection 12 and the attachment plate 6.
Through all of the bolt mounting holes 7, 8, and 14 and strongly tighten them. As a result, the load of the beam 5 is sufficiently supported on the column 11 side.
b also has a high-strength bolt 15
To conclude. The jig 1 for holding the attached splice plate for beam connection, as shown in FIG. 6 (B), is attached to another beam 5 again, and can be used for later assembly by repeating the above operation. it can.

According to the above embodiment, the jig 1 for holding an attached plate for connecting beams has a simple structure including a pair of parallel rods 2, a connecting rod 3 and a nut 4, and has a small number of parts. Therefore, the production is easy and the cost can be reduced. In use, the parallel rod 2
Of the beam 5 of the beam 5 and the attachment plate 6
The bolt mounting hole 8 can be used arbitrarily and quickly and easily, and workability at the time of mounting can be improved. In addition, the attached beam connecting attachment plate holding jig 1 can be removed in a connected state of the beam 5, for example, in a state of being fastened by the temporary bolt 9, so that it does not hinder subsequent fastening by the high-strength bolt. The fastening operation can be performed easily, reliably, and efficiently. In this case, the attachment jig 1 for the beam connecting plate can be easily removed by loosening the nut 4 and then pulling out the parallel rod portion 2. It can be performed safely and efficiently without using. As a result, the beam connecting jig 1 can be easily removed from the beam in this manner, so that no extra matter remains in the beam 5 and no waste of material occurs unlike the conventional example. . In addition, since the removed jig 1 for attaching a beam is attached to another beam again and can be used repeatedly, the number of jigs for the beam can be greatly reduced as compared with the conventional example. In addition, the economical efficiency can be remarkably improved by a plurality of uses. Furthermore, as it can be easily and safely attached and detached at the construction site, installation at the factory is not required, reducing the number of work steps at the factory, and it is not necessary to transport while mounted on the beam,
Unlike the conventional example, it is possible to eliminate the occurrence of troubles due to the conveyance and the necessity of giving extra attention.

[0023]

As described above in detail, according to the jig for holding an attachment plate for beam connection of the present invention, the structure is simple, the number of parts is small, the cost can be reduced, and the manufacturing can be easily performed. Also, it can be easily attached to and detached from each beam, and can be reused after beam joining, and a small number can temporarily hold a large number of attachment plates, making effective use of materials possible. It can be easily and safely attached and detached at the construction site and does not need to be mounted in the factory or transported in the mounted state, eliminating the occurrence of problems associated with conventional transport and the need for extra care, and Safety, efficiency, economic efficiency, etc. are greatly improved from the comprehensive detection on the transport side, use side, etc. compared with the conventional, and it has a great effect on the actual steel building with beam connection Can be.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a beam connecting attachment plate holding jig according to the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a diagram illustrating a state before mounting in the operation explanatory view of the embodiment.

FIG. 5 is a view for explaining the operation, showing a state in the middle of mounting.

FIGS. 6A to 6D are process diagrams sequentially showing a use state at the time of beam connection.

FIG. 7 is a diagram showing a beam connection state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jig for holding connection plate for beam connection 2 Parallel rod portion 2a Male thread 3 Connecting rod portion 4 Nut 5 Beam 5a Web 5b Flange 6 (For web) Connection plate 7,8 Bolt mounting hole 9 Temporary bolt 10 Wire 11 Column 12 Column connection 12a Web 12a Flange 13 Temporary bolt 14 Bolt mounting hole 15 High strength bolt 16 Flange attachment plate

Claims (1)

[Claims] When an end of a beam made of an I-beam is abutted to a connection such as a column, and bolted via an abutment plate extending between both abutting portions, the abutment plate is connected to both sides of the web of the beam. A jig for holding a beam connecting plate for temporarily holding until positioning to said connection, wherein a pair of upper and lower arrangements previously drilled corresponding to the web of said beam and said plate. A pair of parallel rod portions, which are arranged at intervals corresponding to the bolt mounting holes and are slidably inserted into the respective bolt mounting holes and are curved at the same curvature, and one end of each of the two parallel rod portions is connected to each other. A connecting portion for integrally connecting, and a nut screwed to each other end of the parallel rod portion to hold the contact plate on the web of the beam. Contact plate holding jig.