JP2918202B1 - Correction method of joint of steel beam to existing steel column and correction tool therefor - Google Patents

Abstract

An object of the present invention is to provide a convenient orthodontic tool capable of quickly and accurately joining steel beams between opposed attached fixed beams protruding from an existing steel column. One end of a first link arm (23) is pivotally connected to one end of a fixed arm (16) by a first rotation fulcrum pin (25), and the other end of the first link arm is connected to the other end of the first link arm. The 2nd link arm (2
9) pivoting one end of the second link arm so that the mounting screw shaft (32) forming the other end of the second link arm approaches the mounting screw shaft (18) forming the other end of the fixed arm; And the fixed arm and the middle part of the first link arm are pivotally connected by a hydraulic jack (39), and the hydraulic jack is connected to a manually operated hydraulic pump (46). ) To extend and retract.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting a joint of a steel beam to an existing steel column, and a convenient joint correcting tool therefor.

[0002]

2. Description of the Related Art In general, a steel column to which a short H-shaped steel fixed beam is welded and a long H-shaped steel beam corresponding to the fixed beam are used for a pair of existing steel frames in a frame construction of a steel building. In joining the steel beams between the fixed beams overhanging from the steel columns, the steel beams are suspended by a crane while a pair of workers laterally move the beams so that the fixed beams are connected to each other. After being pulled in so as to be in series, the joints between the fixed beams and the steel beams are fastened and integrated with the upper and lower, left and right joint plates, and a plurality of bolts and fixing nuts penetrating therethrough. It is customary.

However, since the length of the steel beam and the distance between the fixed beams that receive the steel beam are designed to maintain a very small clearance, the existing steel column may be deformed even by a small amount. If there is any variation in the length dimensional accuracy or construction accuracy of the steel beam, the joints between the steel beam and the fixed beam overlap each other, and the steel beam is pulled in from the side. As a result, the joints have to be forcibly pushed open and straightened, and this situation is more likely to occur as the height of the steel building increases.

Japanese Unexamined Patent Publication Nos. 7-62886 and 8-105209 have proposed a straightening device for a steel beam to an existing steel column as described above, and this was particularly suggested based on FIG. 1 of the latter. The embodiment of the first invention is believed to be the closest approximation to the present invention.

[0005]

However, Japanese Patent Application Laid-open No.
In the configuration of the invention of No.-105209, the hydraulic jack (1
0) and a fixing member (5) provided with the semi-cylindrical insertion portion (8)
In addition, since the position adjusting member (13) is an independent part for each and has a large number of parts, it is necessary to add a troublesome assembling work prior to use, and to use it conveniently and immediately as it is. Can not.

In addition, a mounting portion (7) in which the semi-cylindrical insertion portion (8) of the hydraulic jack (10) forms a fixing member (5).
Because of the position provided at the lateral eccentric position, it is necessary to prepare for the right-hand and left-hand use for the position of the insertion portion (8) in advance, and several types thereof must be used properly. Therefore, not only is it bothersome yet, but it cannot exert the mass production effect as the device.

Further, the mounting portion (7) of the fixing member (5) is fastened and fixed by a plurality of bolts to bolt through-holes distributed in the upper flange (4) of the connection beam (2). However, the number and spacing pitch of the bolt through-holes distributed in the upper flange (4) actually vary significantly for each steel-framed building and are not always constant. The mounting portion (7) of the fixing member (5) cannot be mounted on the upper flange (4) of the connection beam (2) and cannot be used, resulting in poor versatility.

Further, in the case of this known invention, the push-opening of the intermediate beam (3) against the connection beam (2) is performed by the hydraulic jack (1).
0), the lateral movement of the intermediate beam (3) to be drawn toward the connecting beam (2) after that is independent of the hydraulic jack (10). This is achieved by rotating the friction type position adjusting wheel (13).

That is, in addition to the manual operation of the hydraulic jack (10) by the hand pump (11) connected to the hydraulic jack (10), the hydraulic jack (10) needs to be manually operated. Since the position adjusting wheel (13) must also be rotated artificially, it is extremely troublesome and heavy labor, and one worker cannot handle and use it at all.

[0010] In this regard, it is described that the operating portion (14) of the position adjusting wheel (13) is "rotated by an appropriate tool". However, the operating portion (14) must be forcibly pushed and opened by the hydraulic jack (10). As a result, it is difficult to laterally move the intermediate beam (3) in a stretched state to which a high load has been applied by a manually operated tool. Even if the intermediate beam (3) can be laterally moved, its lateral movement stroke is large. FIG.
There is a limit up to the 3C position of (C).

[0011] Therefore, in the above-mentioned known invention, "the finish is adjusted manually by a hammer or the like from the position 3C, and the end face (22) of the connection beam (2) and the end face (23) of the intermediate beam (3) are sharply fitted. It is described as "adjusting to the position of the 3D shown in the figure to be aligned and joined", but as it is repeatedly described, the intermediate beam (3) in a tensioned state subjected to a high load so that it must be pushed open by the hydraulic jack (10). It is practically impossible to move the traverse by hand with a hammer or the like, and the larger the hammer or the like is used, the worse the foothold of the operator is, and the lower the risk of falling. It is evident that this becomes more pronounced the higher the height of steel structures.

[0012]

SUMMARY OF THE INVENTION The present invention aims to drastically solve the above-mentioned problems, and as a structure for achieving the objects, an attached fixing member extending integrally from a pair of existing steel columns facing each other. In suspending a separate steel beam longer than this, between beams, to correct the joint so that it is in an accurate series,

[0013] One end of the steel beam is pivotally connected to one of the fixed beams, and the other end is pivotally connected to a temporary joint state in which the beam can move laterally.

[0014] One end of the first link arm is pivotally connected to one end of the fixed arm by a first rotation fulcrum pin, and a second parallel to the first rotation fulcrum pin is connected to the other end of the first link arm. One end of the second link arm is pivotally connected by a pivot pin, and the other end of the second link arm approaches the other end of the fixed arm. Using a correction tool that is pivotally connected to the middle part of the fixed arm and the first link arm by a hydraulic jack that can be extended and retracted,

First, the other end of the fixed arm forming the correction tool is detachably attached to one of the other end of the steel beam and the other fixed beam from the lateral direction, and then the correction tool is also mounted. In a state where the other end of the second link arm to be formed is removably pivotally attached to the remaining other from the same lateral direction,

The hydraulic jack of the correction tool is extended by a pump operation, and the other end of the steel beam is connected to the fixed arm by the circular motion of the first link arm about the first pivot pin. When the other fixed beam is forcibly pushed open, at the same time, the other end of the steel beam is drawn in the lateral direction that will be accurately aligned with the other fixed beam,

Further, as a correction tool used for carrying out the above-mentioned joint correction method, one end of the first link arm is pivotally connected to one end of the fixed arm by a first rotation fulcrum pin. One end of the second link arm is pivotally connected to the end by a second pivot pin parallel to the first pivot pin, and the other end of the second link arm is connected to the other end of the fixed arm. Framed in an almost triangular overall shape in plan view that will approach,

From the other end of the fixed arm, an attached fixing beam of the existing steel column or a screw shaft for mounting to a separate steel beam is integrally provided, while the other end of the second link arm is connected to the other end of the second link arm. Also, the screw shaft for attachment to the attached fixed beam of the existing steel column or a steel beam separate from this is
While pivotally connected by a third pivot pin parallel to the two pivot pins,

A manually operated hydraulic pump in which the fixed arm and the intermediate part of the first link arm are pivotally connected by a hydraulic jack which can be extended and retracted, and the hydraulic jack is integrated with the hydraulic jack, or It is characterized in that the operation is controlled by a manually operated hydraulic pump connected and wired via a fixed length flexible hose.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a frame of a steel frame object to which the present invention is applied. It is a pair of existing steel columns facing each other, and is composed of an H-shaped steel, a welded product of an H-shaped steel and a T-shaped steel as shown in the figure, a square steel pipe (column), and the like.

(A1) and (A2) are the steel columns (P).
By welding to a certain height position corresponding to each layer of (P), a certain length (L) is obtained from both steel columns (P) and (P).
1) Attached fixed beams extending inward and integrally by (L2), and are made of a relatively short H-shaped steel.

In addition, near the overhanging tip of the pair of horizontal upper and lower flanges (1a) (1b) and the vertical web (1c) forming the fixed beams (A1) (A2),
In each case, a plurality of bolt through holes (2a), (2b), and (2c) are intensively distributed.

On the other hand, (B) shows the existing steel column (P).
(P) is a steel beam of a fixed length (L3) that is subsequently joined to both attached fixed beams (A1) and (A2), and has the same cross-sectional shape as the fixed beams (A1) and (A2). Relatively long H
A pair of upper and lower horizontal flanges (3a) made of steel
In the vicinity of both ends of the web (3c) perpendicular to (3b), a plurality of bolt through holes (4a), (4b), and (4c) are also concentratedly distributed.

When the steel beam (B) is joined between the opposed fixed beams (A1) and (A2) of the existing steel column (P) (P), the steel beam (B) is joined. ) Is suspended horizontally by a crane (not shown) and received by a pair of workers from above both fixed beams (A1) and (A2), and is moved laterally to form both fixed beams (A1) and (A2). With the fixed beam (A
1) The overhanging tip of (A2) and both ends of the steel beam (B) are joined and integrated, respectively.

That is, as is clear from FIGS. 3 and 4, the upper flanges (1a) and (3a) of the fixed beams (A1) and (A2) and the steel beam (B) are connected to the wide upper joint plate (5). ) And a pair of narrow lower reinforcing plates (6) and (6), and a total of three bolts (7) are vertically penetrated and fastened by fixing nuts (8). The lower flanges (1b) and (3b) of each fixed beam (A1) (A2) and the steel beam (B) are connected to each other by a wide lower joint plate (9) and a pair of narrow upper reinforcing plates (10) (10). 10), and a total of three bolts (11) that penetrate vertically are fastened with a plurality of fixing nuts (12).

Further, the webs (1c) and (3c) of the fixed beams (A1) and (A2) and the steel beam (B) are also sandwiched between a pair of side joint plates (13) and (13), and the total thereof is obtained. A plurality of bolts (14) penetrating three pieces horizontally,
The fastening nut (15) is used for fastening and integrating.

The normal connection state of the steel beam (B) to the existing steel columns (P) (P) is as shown in FIGS. 1 and 2, but in the unlikely event that the steel beam (B) has a fixed length. If (L3) is slightly longer in construction than the opposed spacing (S) of the fixed beams (A1) and (A2), the steel beam (B) is connected to the fixed beams (A1). ) It is necessary to correct this because it cannot be drawn in the lateral direction, which is to be in series with (A2) exactly.

FIGS. 5 to 10 show a basic embodiment of a straightening tool (T) used for this purpose. (16) shows a fixed length (L4) made of a metal rod such as a steel rod or an aluminum alloy.
(E.g., about 300 mm), one end of which is preferably a small length (L5) (e.g., about 120 m).
m) It is curved to a smooth obtuse angle by the minute. (17) is an insertion tongue piece flattened at one end thereof.

Numeral (18) denotes a screw shaft for attaching a correction tool integrally projecting from the other end of the fixed arm (16). The web (3c) of the steel beam (B) and the fixed beam (A) are provided.
1) It is interchangeably and detachably attached to one of the webs (1c) of (A2). (19) is a fixing nut screwed onto the screw shaft (18).

In this case, a large-diameter ground flange (20) also protrudes integrally from the root of the screw shaft (18), and the ground flange (20) is connected to the steel beam (B).
The straightening tool (T) can be accurately and stably attached and used in surface contact with the web (3c) or the web (1c) of the fixed beams (A1) and (A2).

(21) is a reinforcing back plate which protrudes and extends along the longitudinal direction of the fixed arm (16), (22)
Is a portable handle formed continuously with the handle, which facilitates carrying the correction tool (T).

Reference numeral (23) denotes a first link arm of a fixed length (L6) (for example, about 300 mm) also made of a metal round bar, and a forked piece (24) branched at one end thereof. In a state in which the insertion tongue piece (17) located at one end of the fixed arm (16) is received, it is pivotally connected by a first rotation fulcrum pin (25). The first pivot pin (25) is in a state of being substantially perpendicular to the mounting screw shaft (18) of the fixed arm (16), as is apparent from the example shown in the drawing.

(26) The first link arm (23)
Is a flattened tongue piece at the other end of the first link arm, and (27) is a reinforcing back plate protruding and extending along the longitudinal direction of the first link arm (23). A lock ring (28) is provided for connecting a fall prevention cable (not shown) of the present invention.

However, the installation of the locking ring (28) is omitted, and the portable handle (22) is also used, and one end of a rope for preventing the correction tool (T) from falling is fastened to this. And the other end is the existing steel column of steel building (P)
(P), existing steel beams, work scaffolds, etc., may be fastened.

Reference numeral (29) designates a second link arm of a fixed length (L7) (for example, about 250 mm) also made of a metal round bar, and a forked piece (3) branched at one end thereof.
0) receives the insertion tongue (26) located at the other end of the first link arm (23),
It is pivotally connected via a second pivot pin (31) parallel to the first pivot pin (25).

That is, the correction tool (T) of the present invention comprises the fixed arm (16) and the first and second link arms (23) (2).
9), the other end of the second link arm (29) is connected to the mounting screw shaft (1) of the fixed arm (16).
It is framed in an overall substantially triangular shape in plan view that can approach the other end located in 8).

(32) is the second link arm (29)
To the other end of the first and second pivot pins (25) (31)
And a fixing shaft (3c) for the steel beam (B) and a web (1c) for the fixed beams (A1) and (A2). ) Can be interchangeably and detachably attached to either one of the above.

In this case, the second link arm (29)
The mounting screw shaft (32) of is clearly seen from the example of the figure,
In particular, the supporting leg (3) having a large-diameter ground flange (34) whose root portion can make surface contact with the web (3c) of the steel beam (B) or the web (1c) of the fixed beam (A1) (A2).
5), and a bifurcated fork piece (36) branched to the base end of the support leg (35) is provided at the other end of the second link arm (29). 37), is pivoted by the third pivot pin (33).

The distal end of the support leg (35) is integrally provided as a screw shaft (32) in a direction substantially orthogonal to the third rotation fulcrum pin (33). 16) It can be arranged in parallel with the mounting screw shaft (18). (38) is a fixing nut screwed onto the screw shaft (32) of the second link arm (29).

In any case, the screw shaft (18) for attaching the fixed arm (16) is integrally protruded so as not to rotate with respect to the fixed arm (16).
Screw shaft (32) for mounting the second link arm (29)
Is pivotally attached to the second link arm (29) by the third pivot pin (33), so that the web (3c) of the steel beam (B) and the fixed beam (A1). To either one of the web (1c) of (A2),
First, the screw shaft (18) for attaching the fixed arm (16) is attached and integrated by fastening the fixing nut (19), and then the screw shaft (32) for attaching the second link arm (29) to the other side. Can be attached and fixed accurately without restriction.

In order to achieve such an effect, the first link arm is attached to one end of the fixed arm (16) as compared with the screw shaft (18) of the fixed arm (16) attached and integrated first. The screw shaft (32) of the second link arm (29) pivotally connected via (23) is connected to the web (3c) of the steel beam (B) or the web (1c) of the fixed beam (A1) (A2). The ability to freely move back and forth toward the surface also contributes organically.

Further, (39) is the fixed arm (16)
And a first link arm (23) facing each other, which is a hydraulic jack which can be extended and retracted, and a tongue (40) at one end of the hydraulic jack is bifurcated into a middle part of the fixed arm (16). Under the condition of being received by the fork piece (41), it is attached by the first pivot pin (42) which cannot be inserted and removed, and the insertion tongue piece (43) at the other end of the hydraulic jack (39) as well. Is the first
The bifurcated fork piece (44), which branches off in the middle of the link arm (23), is also received and connected via a second pivot pin (45) which can be inserted and removed. It goes without saying that the first and second pivot pins (42) and (45) are in parallel with the first to third pivot pins (25), (31) and (33).

Therefore, as shown in FIGS. 5 to 8, the second pivot pin (45) is pulled out and the first link arm (23) is pulled out.
When the hydraulic jack (39) is detached from the fixed arm (16), the first link arm (23) can be freely opened and closed with respect to the fixed arm (16), and the degree of opening and closing can be adjusted.

As a result, the screw shaft (18) for attaching the fixed arm (16) and the screw shaft (32) for attaching the second link arm (29) are connected to the web (3) of the steel beam (B).
c) or to the web (1c) of the fixed beam (A1) (A2),
The device can be smoothly and correctly mounted without being restricted by the hydraulic pressure of the hydraulic jack (39) or its expansion / contraction operation stroke, and the correction tool (T) itself can be folded into a small and compact shape when not in use.

Conversely, the first pivot pin (42) can be pulled out freely, the second pivot pin (45) cannot be pulled out, and the hydraulic jack (39) is fixed to the fixed arm (16).
Of course, it may be set so that it can be removed from

In FIGS. 11 to 20 showing the use state of the correction tool (T), reference numeral (46) denotes a hydraulic pump for expanding and contracting the hydraulic jack (39). It is connected to a hydraulic jack (39) through a flexible hose (47). (48) is an opening / closing valve of the hydraulic pump (46), and (49) is a manually operated lever.

Therefore, the hydraulic pump (46) is connected to the hydraulic pump (46) in FIG.
As shown in FIGS. 1, 12, and 15, an attached fixed beam (A) of an existing steel column (P) (P) far from the hydraulic jack (39).
1) The hydraulic jack (39) is remotely operated and controlled by placing it in a stable place such as (A2), an existing steel beam, or a work scaffold, and manually operating a manual operation lever (49) thereof. be able to.

Using the straightening tool (T) configured as described above, the mutual interval (S) between the two attached fixed beams (A1) and (A2) projecting from the pair of existing steel columns (P) (P) facing each other. In order to correctly join the steel beam (B), which is longer than this, the steel beam (B) is suspended in the air with a crane, and one end of the steel beam (B) is attached to one of the fixed beams (A1). ), The remaining other end is pivotally connected to a temporary joint state that can move laterally.

That is, as shown in FIGS. 12 to 14, a pair of upper and lower horizontal flanges (3a) (3
b) Overhang of the wide upper joint plate (5) and the lower joint plate (9), which are fixed in advance by a plurality of bolts (7) (11) and fixing nuts (8) (12). The tips are joined in a covering state that straddles a pair of upper and lower horizontal flanges (1a) and (1b) of one fixed beam (A1), and bolts (7) and (11) corresponding to the same vertical line. By one by one, it is pivotally connected to the temporary stop state.

In this case, a pair of upper and lower joint plates (5)
Either of (9) is replaced with the upper flange (1a) or the lower flange (1) of the corresponding fixed beam (A1).
To b), the bolts (7) and (11) may be pivotally connected to the temporary fixing state. In any case, the bolts (7) and (11) are fixed to the fixing nuts (8) and (11). 12)
Is screwed into a relaxed state to prevent the bolts (7) and (11) from coming off.

Then, the other end of the steel beam (B) that can move laterally overlaps the other fixed beam (A2) by a fixed amount (W).
As shown in the figure, the web (1) forming the other fixed beam (A2)
First, a screw shaft (18) for attaching the fixing arm (16) of the correction tool (T) is inserted from the lateral direction into the bolt through hole (2c) opened in c), and the fixing nut (19) is inserted into the screw shaft. By screwing and fastening, it is attached to and integrated with the fixed beam (A2).

Next, a screw shaft (32) for mounting the second link arm (29) in the correction tool (T).
Into the bolt through hole (4c) opened at the other end of the web (3c) in the steel beam (B) from the same lateral direction as shown in FIGS. 38) is screwed and fastened to the steel beam (B) for integration.

When attaching the correction tool (T) to the other fixed beam (A2) and the steel beam (B), one end of the hydraulic jack (39) in the correction tool (T) is connected to the second jack. By removing the pivot pin (45), the first
Remove it from the link arm (23)
Then, the first link arm (23) can be freely opened and closed freely with respect to the fixed arm (16) which is first attached to the fixed beam (A2), and is pivotally connected thereto. The screw shaft (32) for attaching the second link arm (29) can be smoothly and accurately attached and fixed to the web (3c) of the steel beam (B) without any restrictions.

Then, one end of the hydraulic jack (39) is attached to the first link arm (23), and the hydraulic jack (39) is extended by manual operation of the hydraulic pump (46). First with fixed arm (16)
Due to the circular motion of the first link arm (23) about the pivot pin (25), the steel beam (B) and the other fixed beam (A2) are forcibly shown by arrows (Y) in FIGS. It applies a typical pushing force.

As soon as shown in FIG. 18, as soon as the overlapping state between the other fixed beam (A2) and the steel beam (B) is released, the circular motion during the continuation of the first link arm (23). 18 and 2 in the steel beam (B).
A horizontal pull-in force acts on the fixed beam (A2) indicated by the arrow (X) of 0, and as a result, the steel beam (B) is in an accurate joint state in series with the fixed beam (A2) as shown in FIG. It is automatically and quickly corrected.

After the completion of the straightening operation, the screw shaft (18) for attaching the fixed arm (16) and the screw shaft (32) for attaching the second link arm (29) in the above-mentioned straightening tool (T) are either connected. Also, the web (1) of the fixed beam (A2) is moved by retreating the fixing nuts (19) and (38).
c) and the web (3c) of the steel beam (B), respectively, to prepare for the next use.

Then, as is apparent from the normal joining state shown in FIGS. 1 to 4, both ends of the steel beam (B) are connected to the existing steel column (P).
A plurality of the fixed beams (A1) and (A2) projecting from (P) are respectively connected to the distal ends of the attached fixed beams (A1) and (A2) via the joint plates (5), (9) and (13) and the reinforcing plates (6) and (10). Bolts (7) (11) (14) and fixing nuts (8) (1)
2) Fastening and integrating may be performed according to (15).

When the above-mentioned correction tool (T) is mounted from the side opposite to the direction shown in the figure, it can be used in exactly the same manner as described above by turning it over.
There is no need to prepare several types of right-handed and left-handed ones.

Further, a plurality of bolt through-holes (4c) and (2c) having openings distributed in advance on the web (3c) of the steel beam (B) and the web (1c) of the fixed beam (A2) are utilized. The screw shaft (18) for mounting the fixed arm (16) and the screw shaft (32) for mounting the second link arm (29) are detachably and interchangeably inserted into each of the selected ones and penetrated therethrough. Since it is sufficient, it is extremely excellent in versatility and mass production effect in mounting and use.

That is, first, the screw shaft (18) for attaching the fixed arm (16) is attached to the fixed beam (A2), and the screw shaft (32) for attaching the second link arm (29) is attached to the steel beam (B). It is described that each of them is to be attached and used. However, as long as the order of attachment is not changed, the fixing arm (16) is reversed.
Attachment screw shaft (18) to the web (3c) of the steel beam (B) and attachment screw shaft (32) of the second link arm (29) to the web (1c) of the fixed beam (A2). It is also possible to use.

In particular, FIG. 21 corresponding to FIGS.
25, a pair of upper and lower horizontal flanges (3) are also provided at the other end of the steel beam (B) that can move laterally.
a) (3b) A pair of wide upper and lower joint plates (5) and (9) and a pair of narrow reinforcing plates (5) and (9) by a plurality of bolts (7) (11) and fixing nuts (8) (12). 6) (6) (10) (10) are attached and fixed in advance in a projecting state toward the other fixed beam (A2), and a pair of reinforcing plates (6) (6) are arranged in parallel.
(10) Of the (10), only the upper and lower pair facing the one side laterally to which the correction tool (T) is attached is set as a temporary fixing pivot state by one bolt (7) (11), and FIG.
By rotating in the direction indicated by the arrow 2 (R1),
It is prepared in a retracted state that does not interfere with the other fixed beam (A2).

Then, the steel beam (B) and the other fixed beam (A) are used in the same manner as described above with reference to FIGS.
2) is forcibly pushed open by the correction tool (T), and as shown in FIG. 25 through FIG. 22, FIG. 23 through FIG. 24, the steel beam (B) is correctly and simultaneously in series with the fixed beam (A2). Different lateral retraction results in its precise joining.

For this reason, the previously evacuated reinforcing plates (6) and (10) are rotated and returned in the reverse direction indicated by the arrow (R2) in FIG. 25, and the reinforcing plates (6) and (10) and A plurality of bolts (7) (11) are attached to a pair of upper and lower horizontal flanges (1a) (1b) corresponding to the other fixed beam (A2) at the tip end of the joint plates (5) and (9). Fixing nut (8) (12)
It is only necessary to integrate by fastening.

If the straightening method as shown in FIGS. 21 to 25 is adopted, a pair of upper and lower joint plates (5) and (9) which are previously attached and fixed to the steel beam (B) are moved in the above-mentioned push-opening process. Horizontal flange (1a) of fixed beam (A2)
(1b) is sandwiched from above and below, so that the pull-in action to the fixed beam (A2) can be performed smoothly and stably from the so-called lateral direction, and the steel beam (B) after the completion of the correction work. ) And the fixing beam (A2) can be completed relatively easily and efficiently.

Next, FIGS. 26 to 33 show modified embodiments of the correction tool (T) according to the present invention, in which the fixed arm (16) and the first and second link arms (23) (2) are shown.
9) is made into a channel-shaped or H-shaped cross section from a metal plate material such as a steel plate.

In order to remove one end of the hydraulic jack (39) from the fixed arm (16), a bearing boss (50) at one end of the hydraulic jack (39) is inserted into the fixed arm (16). The first pivot pin (4
2), one end of the hydraulic jack (39) can be removed from the bearing boss (50). The other end of the hydraulic jack (39) is also the first
A second, non-removable second part of the link arm (23)
Attached via a pivot pin (45).

Further, a hydraulic pump (46) for controlling the operation of the hydraulic jack (39) is integrally attached to the hydraulic jack (39) in a communicating state with the hydraulic jack (39). The hydraulic jack (39) can be extended and retracted by inserting and removing the hydraulic jack (49). According to this, the hydraulic pump (46)
Has the advantage that it can be carried with the hydraulic jack (39).

Since the other constructions and operations of the modified embodiment are substantially the same as those of the basic embodiment shown in FIGS. 5 to 20, the constructions are shown in FIGS. In FIG. 33, only the reference numerals corresponding to those in FIGS. 5 to 20 are entered, and the detailed description thereof is omitted.

[0069]

According to the configuration of the present invention as described above, the correction tool (T) is a plan view in which the correction tool (T) is framed by the fixed arm (16) and the first and second link arms (23) and (29). As a whole, almost triangular, finished in a self-contained product, and its fixed arm (16)
Mounting screw shaft (18) and the second link arm (2
9) Attach the screw shaft (32) to the existing steel column (P).
It is designed to be attached to the attached fixed beams (A1) and (A2) and the steel beam (B) which are extended from (P) interchangeably and detachably from the same lateral direction. In addition to being usable, there is no need to prepare several types of right-handed and left-handed ones in advance, and they can be used upside down without any problems, and are extremely excellent in versatility and mass production effects.

In particular, the fixed arm (16) and the first link arm (23) pivotally connected to one end of the fixed arm (16) are pivotally connected via a hydraulic jack (39) which can be extended and retracted. In addition, the mounting screw shaft (18), which is the other end of the fixed arm (16), is in a fixed state integrally projecting from the fixed arm (16). Screw shaft (32) for mounting the second link arm (29) pivotally connected to the arm (23)
Is pivotally attached to the second link arm (29), so that the screw shaft (18) for mounting the fixed arm (16) is fixed first to the fixed beams (A1) (A2) and the steel beam. (B), the screw shaft (32) for attaching the second link arm (29) can be attached smoothly and accurately to the remaining one without any restriction, in a state where the attachment screw shaft (32) is attached and fixed to one of them. There is.

When the hydraulic jack (39) is extended by the manual operation of the hydraulic pump (46), the hydraulic jack (39) moves in an arc around the first pivot pin (25) with the fixed arm (16). When the pushing force is applied to the steel beam (B) and the fixed beams (A1) (A2) by the first link arm (23), the steel beam (B) is simultaneously fixed to the fixed beams (A1) (A2). In this case, the steel beam (B) can be automatically and continuously corrected in one stage so as to correct the steel beam (B) to a precise joint state with the fixed beams (A1) and (A2). The workability is also remarkably excellent.

Further, if one end of the hydraulic jack (39) is pivotally attached so as to be detachable from the fixed arm (16) or the first link arm (23), the fixed arm (16) and the first link arm (23) are connected to each other. The fixed arm (16) can be freely opened and closed with the link arm (23).
Mounting screw shaft (18) and the second link arm (2
9) The mounting screw shaft (32) can be smoothly and reliably mounted on the steel beam (B) or the fixed beams (A1) (A2) without any restrictions.

The mounting screw shaft (18) integrally protruding from the fixed arm (16) and the mounting screw shaft (32) pivotally mounted on the second link arm (29). , Web (1c) of fixed beams (A1) (A2)
Alternatively, if the ground flanges (20) and (34) that can make surface contact with the web (3c) of the steel beam (B) are integrally extended,
Both of the screw shafts (18) and (32) can be kept in a stable and firmly attached state.

At any place of the fixed arm (16) and the first link arm (23) forming the straightening tool (T), the locking ring (28) of the portable handle (22) and the rope for preventing the straightening tool from dropping. ) Is convenient to carry to the correction work place and can enhance the safety in use.

[Brief description of the drawings]

FIG. 1 is an overall schematic plan view showing a normal joint state of a steel beam to an existing steel column.

FIG. 2 is an overall schematic side view of FIG.

FIG. 3 is a side view showing a joint portion of FIG. 2 in an extracted and enlarged manner.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a plan view showing a basic embodiment of a correction tool according to the present invention.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 5;

FIG. 8 is a sectional view taken along line 8-8 in FIG. 5;

FIG. 9 shows a state in which both ends of the hydraulic jack are attached.
FIG.

FIG. 10 is a sectional view taken along line 10-10 of FIG. 9;

FIG. 11 is an overall schematic plan view corresponding to FIG. 1 and showing the relationship between the opposed mutual spacing of both attached fixed beams and the longer steel beam in the existing steel column.

FIG. 12 is an overall schematic plan view showing a state in which one end of a steel beam is temporarily fixed to one of both attached fixed beams.

FIG. 13 is a plan view showing the temporary fixing portion of FIG. 12 extracted and enlarged.

FIG. 14 is a sectional view taken along line 14-14 of FIG.

FIG. 15 is a perspective view showing a use state of the correction tool.

FIG. 16 is a plan view showing a state in which a correction tool is attached to the other of the attached fixing beams and the other end of the steel beam.

FIG. 17 is a sectional view taken along line 17-17 of FIG. 16;

FIG. 18 is a plan view showing the process of pushing open the fixed beam and the steel beam following FIG. 16;

FIG. 19 is a plan view showing an accurate joint state between the fixed beam and the steel beam beam, following FIG. 18;

FIG. 20 is a plan view showing the automatic continuous whole operation from FIG. 16 to FIG. 19;

FIG. 21 is a perspective view of a state in which a joint plate and a reinforcing plate are attached to the other end of the steel beam in advance.

FIG. 22 is a plan view corresponding to FIG. 16 showing another correction method of the present invention.

FIG. 23 is a sectional view taken along line 23-23 of FIG. 22;

FIG. 24 is a plan view showing a push-opening action process following FIG. 22;

FIG. 25 is a plan view showing an accurate joining state following FIG. 24;

FIG. 26 is a plan view showing a modified embodiment of the correction tool according to the present invention.

FIG. 27 is a front view of FIG. 26;

FIG. 28 is an enlarged sectional view taken along line 28-28 of FIG.

FIG. 29 is an enlarged sectional view taken along line 29-29 of FIG.

FIG. 30 is a plan view corresponding to FIG. 26 in a state where both ends of the hydraulic jack are attached.

FIG. 31 is an enlarged sectional view taken along line 31-31 of FIG. 30;

FIG. 32 is a plan view showing a state where the correction tool of the modified embodiment is attached to a steel beam and a fixed beam.

FIG. 33 is a plan view showing an accurate joint state between the fixed beam and the steel beam beam, following FIG. 32;

[Explanation of symbols]

 (1a) (3a) · Upper flange (1b) (3b) · Lower flange (1c) (3c) · Web (2a) (2b) (2c) · Bolt through hole (4a) (4b) (4c) · Bolt Through-hole (5), Upper joint plate (9), Lower joint plate (13), Side joint plate (16), Fixed arm (18), Screw shaft for mounting (19), Fixed nut (20), Ground flange ( 22) ・ Portable handle (23) ・ First link arm (25) ・ First rotation fulcrum pin (28) ・ Locking ring (29) ・ Second link arm (31) ・ Second rotation fulcrum pin ( 32) · Mounting screw shaft (33) · Third pivot pin (34) · Ground flange (35) · Support leg (38) · Fixed nut (39) · Hydraulic jack (42) · First pivot pin (45) 2nd pivot pin (4 )-Hydraulic pump (49)-Manual operation lever (50)-Bearing boss (A1) (A2)-Fixed beam (B)-Steel beam (L3)-Length of steel beam (P) (P)-Existing steel frame Pillar (S) · Spacing between both fixed beams (T) · Correction tool

Claims (7)

(57) [Claims] 1. A pair of existing steel columns facing each other (P) (P)
While suspending a separate steel beam (B) longer than this from the attached fixed beams (A1) and (A2) integrally extending from One end of the steel beam (B) is fixed to one of the fixed beams (A
1), the other end is pivotally connected to a temporary joint state in which the other end can be moved laterally, and the first rotation fulcrum pin (2) is connected to one end of the fixed arm (16).
5) to pivotally connect one end of the first link arm (23) to the other end of the first link arm (23), and to the other end of the first link arm (23), a second rotation fulcrum parallel to the first rotation fulcrum pin (25). One end of the second link arm (29) is pivotally connected by the pin (31), and the other end of the second link arm (29) approaches the other end of the fixed arm (16). The frame is formed into a generally triangular shape in plan view, and the fixed arm (16) and the first link arm (23) are pivotally connected to each other in the middle part by a hydraulic jack (39) which can be extended and retracted. First, using the correction tool (T), the other end of the fixed arm (16) forming the correction tool (T) is connected to either the other end of the steel beam (B) or the other fixed beam (A2). Attach it to one side so that it can be detached from the side, and fix it. The hydraulic jack (39) of the correction tool (T) is pumped while the other end of the second link arm (29) forming the correction tool (T) is removably pivotally connected to the other side from the same lateral direction. The other end portion of the steel beam (B) is extended by an operation, and the first link arm (23) is circularly moved about the first rotation fulcrum pin (25) with the fixed arm (16). And the other fixed beam (A2) are forcibly pushed open, and at the same time, the other end of the steel beam (B) is connected to the other fixed beam (A2).
(2) A method for correcting the joint of a steel beam to an existing steel column, wherein the steel beam is drawn in a lateral direction so as to be accurately in series with (2). 2. An attached fixing beam (A) of an existing steel column (P) (P).
1) (A2) and a separate steel beam (B) are connected to the same H
Vertical steel webs (1c) (3c)
A plurality of bolt through holes (2c) and (4c) are open-distributed, and the other end of the fixing arm (16) forming the correction tool (T) is compatible with the bolt through holes (2c) and (4c). And a screw shaft (18) which can be inserted and removed freely and integrally protrudes from its fixed arm (16), while the second link arm (2) also forming a correction tool (T)
The other end of (9) is a screw shaft (32) that can also be inserted through the bolt through-holes (2c) and (4c) in an interchangeable and removable manner. A pivot shaft (18) of the fixed arm (16) and a screw shaft of the second link arm (29) are pivotally mounted by a third pivot shaft pin (33) parallel to the pivot shaft pins (25) and (31). (32) are passed through the bolt through-holes (2c) and (4c) from the lateral direction, and the fixing nuts (19) and (38) fastened to the bolts (2c) and (4c) are used.
2. The straightening of a steel beam to an existing steel column according to claim 1, characterized in that the beam is fixed to the web (1c) of the fixed beam (A1) (A2) or the web (3c) of the steel beam (B). Method. 3. A hydraulic jack (3) for forming a correction tool (T).
One end of 9) is non-detachably pivoted to one of the middle part of the fixed arm (16) and the middle part of the first link arm (23), and the other end of the hydraulic jack (39) is also connected. 6. A hydraulic pump according to claim 5, wherein the hydraulic jack is detachably pivotally connected to the remaining one and the operation of the hydraulic jack is remotely controlled by a manually operated hydraulic pump connected to the hydraulic jack. The method for correcting the joint of a steel beam to an existing steel column according to claim 1. 4. One end of a first link arm (23) is pivotally connected to one end of a fixed arm (16) by a first rotation fulcrum pin (25) and the other end of the first link arm (23). One end of the second link arm (29) is pivotally connected to the end by a second pivot pin (31) parallel to the first pivot pin (25), and the second link arm (29) is pivoted. The other end of the fixed arm (16) approaches the other end of the fixed arm (16), and the frame is formed into an overall substantially triangular shape in plan view. )
The screw shaft (18) for attaching to the attached fixed beam (A1) (A2) of (P) or the steel beam (B) separate therefrom is integrally protruded, while the other of the second link arm (29) is provided. At the end, the screw shaft (32) for attaching to the attached fixed beam (A1) (A2) of the existing steel column (P) (P) or the steel beam (B) separate from the same, the first and second times. Moving fulcrum pin (25) (3
A hydraulic jack (39) that is pivotally mounted by a third rotation fulcrum pin (33) parallel to 1) and is capable of extending and contracting the middle part of the fixed arm (16) and the first link arm (23). A manually operated hydraulic pump (46) with its hydraulic jack (39) attached to and integrated with a pivotal connection,
Alternatively, a steel beam for an existing steel column characterized in that its operation can be controlled by a manually operated hydraulic pump (46) connected and wired through a flexible hose (47) of an appropriate length. Tools for joint correction. 5. An unremovable first pivot pin (4) for connecting one end of the hydraulic jack (39) to one of the middle part of the fixed arm (16) and the middle part of the first link arm (23).
Attach by 2) and hydraulic jack (3
9) The other end of the hydraulic jack (39) is attached to the other end by a second pivot pin (45) that can be freely inserted and removed, and the second pivot pin (45) to which the other end of the hydraulic jack (39) is attached is removed. Under the condition, the screw shaft (18) for attaching the fixed arm (16) and the screw shaft (32) for attaching the second link arm (29) are attached to the attached fixed beam (P) of the existing steel column (P) (P). The tool for correcting the joint of a steel beam to an existing steel column according to claim 4, characterized in that the tool is fixed to A1) (A2) or a steel beam (B) separate therefrom so that it can be freely attached and fixed. 6. A mounting screw shaft (18) integrally projecting from the other end of the fixed arm (16), and a mounting screw shaft (3) pivotally attached to the other end of the second link arm (29).
To 2), attached beam (A1) of existing steel column (P) (P)
(A2) or separate fixing nuts (19) and (38) for the steel beam (B) are screwed together, and the fixing beams (A1) ( The tool for correcting the joint of a steel beam to an existing steel column according to claim 4, wherein the grounding flanges (20) and (34) capable of surface-contacting the A2) or the steel beam (B) are integrally extended. 7. A portable handle (22) and / or a locking ring (28) for a fall-prevention rope are provided at arbitrary positions of the fixed arm (16) and the first link arm (23). The tool for correcting the joint of a steel beam to an existing steel column according to claim 4.