JP3483649B2 - Non-Erection Piece Construction Method for Column Steel Construction and Its Column Steel Construction Equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-erection piece construction method for erection of a pillar steel frame and a column steel erection apparatus thereof.

[0002]

2. Description of the Related Art In-situ welding is usually used for joining column steel frames, particularly upper and lower rectangular steel pipe columns. A general method in this case is to use an electrical piece for temporary construction until the end of joining when constructing a steel frame. Specifically, as shown in FIG. 13 and FIG. 14, a plurality of erection pieces c and d are welded in a mutually corresponding manner to the outer circumferences of the joining ends of the upper and lower rectangular steel pipe columns a and b, and these erection pieces c are welded. , D between the upper and lower sides of the connection plate e, and temporarily tightened with a plurality of bolts and nuts f to adjust the construction,
The joining ends of the upper and lower pillar steel frames a and b are welded (column welded) to be integrated, and finally the erection pieces c and d thereof are joined.
Is to cut and remove. However, in this case, the connection plate e and many bolts
Temporary tightening with nut f is required. Column welding is difficult because of the erection piece. After the pillar welding is completed, the erection piece is blown by gas,
Need to grind. Generally, the construction period is long and the cost is high. There are drawbacks, etc.

By the way, in recent years, as a joining structure of upper and lower rectangular steel tube columns, a horizontal top plate is welded to the upper end of the lower rectangular steel tube column, and a guide plate crossing in a cross shape is erected at the center of the upper surface of the top plate. , The lower end of the built-in upper rectangular steel tube pillar is loosely fitted to the guide plate, and the lower end of the upper rectangular steel tube pillar is preliminarily penetrated with adjusting bolts in two steps, one above the other at appropriate places on the four surrounding surfaces. By screwing, the tips of these adjusting bolts are brought into contact with the respective side end surfaces of the guide plate, and by adjusting the screwing of these adjusting bolts, the rectangular steel tube column on the upper side is installed and adjusted, and thereafter, It was proposed that the upper and lower rectangular steel tubular columns be welded to each other (Japanese Utility Model Publication No. 5-35902). However, even in this case, it is not possible to adjust the adjustment bolts in advance before installation, and after adjustment, it is necessary to adjust at least eight adjustment bolts by screwing. Since the push and pull are related to each other, they cannot be adjusted independently of each other, and the adjustment is not easy. After the column welding, not only the adjustment bolts need to be removed but also the remaining screw holes need to be closed, which requires a considerable amount of post-processing to the extent that the erection piece is used. In this case, after all, the construction period becomes long and the cost becomes high. It has drawbacks such as

[0004]

DISCLOSURE OF THE INVENTION The present invention is intended to solve these problems and makes it possible to make a pre-installation adjustment before installation, and to make a few post-installation adjustments. The bolts can be easily adjusted with just a small amount of adjustment, making the erection piece useless, eliminating the need for temporary tightening before installation adjustment, and facilitating column welding.
The adjustment bolts and the like do not project to the outside at all, and post-treatment after column welding is not necessary at all, thereby reducing the construction period and cost.

[0005]

In order to achieve the above object, the invention of the "non-erection piece construction method for erection of a pillar steel frame" of claim 1 is directed to the upper and lower pillar steel frames 1 and 2 made of welded rectangular steel pipes .
The horizontal plates 3 and 4 are arranged to face each other between the two joints, and a fitting projection 5 having a non-circular cross section is provided at the center of one of the horizontal plates 3 and 4, and the other of the horizontal plates 3 and 4 is provided. A through hole 6 for fitting into which the fitting projection 5 is non-rotatably fitted is formed in the center, and further, one of the two horizontal plates 3 and 4 is fitted to an appropriate position of one of the peripheral parts to the other peripheral part. A plurality of abutment bolts 7 to be brought into contact with each other are provided so as to be freely adjustable in and out in the vertical direction, and when the pillar steel frame is constructed, the fitting projections 5 and the fitting through holes 6 are fitted and the abutment bolts 7 is brought into contact with the peripheral portion of the other horizontal plate and placed, and the abutment bolts 7 are adjusted to move in and out to adjust the vertical insertion of the column steel frame, and then the upper and lower joints are welded to each other. The feature is that they are integrated.

The invention of the "column steel frame erection device" of claim 2 is
Horizontal plates 3 and 4 are placed between the joints of the upper and lower column steel frames 1 and 2 made of welded rectangular steel pipes to face each other, and a horizontal cross-section is non-circular in the center of either of the horizontal plates 3 and 4. And a fitting through hole 6 into which the fitting projection 5 is non-rotatably fitted, is formed in the center of the other, and further, either one of the horizontal plates 3 and 4 is formed. It is characterized in that a plurality of abutment bolts 7 for abutting the other peripheral edge portion at appropriate positions on the peripheral edge portion are provided so as to be adjustable in and out in the vertical direction.

Further, the invention of the "column steel frame erection device" of claim 3 is that horizontal plates 3 and 4 are respectively provided at the joints of the upper and lower column steel frames 1 and 2 made of welded rectangular steel pipes , and the lower column steel frame. 1 is located at the upper end thereof, and upper pillar steel frame 2 is located above the lower end thereof so as to face each other with a space therebetween, and a fitting protrusion having a cross-shaped cross section at the center of the lower horizontal plate 3. 5 is erected, and a square fitting through hole 6 is formed in the center of the upper horizontal plate 4 for non-rotatably engaging the fitting projections 5 at the four corners, and further, in the upper horizontal plate 4. A plurality of abutment bolts 7 to be brought into contact with the peripheral portion of the lower horizontal plate are screwed in appropriate positions in the peripheral portion in the vertical direction so as to be adjustable in and out, and the abutment bolts 7 are brought into contact with the lower portion. The upper surface of the peripheral portion of the horizontal plate 3 is a uniform smooth surface 8. And it features.

[0008]

In any of the above configurations, the fitting projections 5 and the fitting through holes 6 can be easily fitted to each other in a horizontal plane only by the fitting. The abutment between the abutment bolts 7 and the horizontal plate 3 enables the installation adjustment, that is, the adjustment of the height and the verticality of the installed upper column steel frame 2, and the abutment bolts 7 of the installed before installation. It is possible to adjust its height and verticality in advance by screwing it in and out in a certain state, and
It allows you to make a slight adjustment after installation,
In addition, it is possible to completely eliminate the post-treatment after the column welding by eliminating all that protrudes to the outside.

[0009]

1 to 12 show three embodiments according to the inventions of claims 1 to 3. Which of these embodiments is selected is governed by the design and assembling conditions of the steel frame structure, so any one may be arbitrarily selected according to the steel frame structure to be constructed.

Part 1. FIGS. 1 to 4 show a first embodiment according to the inventions of claims 1 to 3. In the figure, 1 is a lower column steel frame that has been erected in advance, 2 is an upper column steel frame that is built on the lower column steel frame, and these are welded square steel pipes with a square cross section, Indicates the joint. The horizontal steel plates 3 and 4 are fixed by welding to the inner upper end of the lower column steel frame 1 and slightly above the inner lower end of the upper column steel frame 2, respectively, and are spaced apart from each other. Then, a fitting protrusion 5 having a cross-shaped cross section is erected at the center of the lower horizontal plate 3,
In the center of the upper horizontal plate 4, there is formed a rectangular fitting through hole 6 into which the fitting projection 5 is non-rotatably fitted and engaged at the four corners. Further, a pair of left and right abutting bolts 7 are provided at intermediate points of both side edges of the peripheral edge of the upper horizontal plate 4.
Are respectively screwed in the vertical direction with the bolt heads downward so that they can be adjusted in and out, and these bolt heads are brought into contact with the upper surface of the peripheral portion of the lower horizontal plate 3. On the other hand, in the peripheral portion of the lower horizontal plate 3, the upper surface is precisely faced to form a uniform smooth surface 8 so that the two abutment bolts 7 are brought into uniform contact with each other. The fitting projection 5 has a tapered distal end to facilitate the fitting, and the fitting projection 5 is provided with an appropriate number of small holes 9 for various types of fitting. It makes slinging easy when building with a crane. A reinforcing plate 10 and a nut 11 for screwing are provided on the screwing portion of the two abutment bolts 7 of the upper horizontal plate 4.
A groove 12 for column welding is formed on the outer peripheral edge of the lower end of the upper column steel frame 2 for column welding, and a backing metal 13 for welding is provided behind the groove. ing.

Thus, the upper column steel frame 2 is erected on the lower column steel frame 1 which was previously erected, and the abutment bolt 7 is adjusted in advance and retracted in a certain posture during the erection. Then, the fitting projection 5 and the fitting through hole 6 are fitted together, and the bolt heads of the two abutment bolts 7 are precisely faced to form a uniform smooth surface 8 on the other side. The plate is placed by making contact with the peripheral edge of the plate. In this mounted state, both abutment bolts 7 have been adjusted in and out in a certain posture in advance, and the contact surface is a uniform smooth surface 8 that has been precisely faced. Most of them are in the finished state, and after that, it is fine to make a slight adjustment. For this fine adjustment, for example, the upper pillar steel frame 2 may be slightly floated, and a wrench may be fitted to the bolt head of the abutment bolt 7 to rotate it slightly. As a result, the abutment bolt 7 can be lightly screwed without any mechanical load. After the installation adjustment is completed in this way, the upper and lower pillar steel frames 1 and 2 are welded to each other in the groove 12, and the installation of the pillar steel frame 2 is completed. The column welding may be automatically performed using a welding robot.

No. 2. FIGS. 5 to 8 show a second embodiment according to the inventions of claims 1 to 3. In this case, in the case of the previous example, the abutment bolt 7 of the upper horizontal plate 4 is similarly screwed to the midpoint between the front and rear edges of the peripheral portion, and it is assumed that the abutment bolt 7 is conveniently four. There is. Others are the same as the previous example, and the description thereof will be omitted.

Part 3. FIGS. 9 to 12 show a third embodiment according to the inventions of claims 1 to 3. In this case, in the first embodiment shown in FIGS. 1 to 4, the abutment bolts 7 of the upper horizontal plate 4 are screwed into the four corners of the peripheral edge portion in the same manner as the four bolts. Others are the same as those in the first embodiment, and the description thereof will be omitted.

[0014]

According to the inventions of claims 1 to 3,
It has the following effects. 1) Since the erection piece is not used, it is not necessary to temporarily tighten the connection plate and many bolts and nuts after the installation and before the installation adjustment. 2) Since there is no erection piece, column welding is easy,
The welding robot can be used without any problems. 3) Since there is no erection piece, neither gas cutting nor grinding treatment of the erection piece is necessary after the column welding is completed. 4) The installation can be adjusted in advance before installation, and the installation adjustment after installation can be easily performed by slightly adjusting a small number of abutment bolts 7. 5) Since many adjustment bolts do not project outside,
There is no need to remove those adjusting bolts or to close the remaining screw holes after pillar welding, and no post-processing is required. 6) Overall, the construction period can be significantly shortened and the cost can be reduced.

According to the third aspect of the invention, since the upper surface of the peripheral portion of the lower horizontal plate 3 with which the abutment bolt 7 is abutted is made to have a uniform smooth surface 8, the construction to be carried out in advance before the construction is carried out. The accuracy of the insertion adjustment can be further improved, and therefore, the fine adjustment of the insertion adjustment performed after the installation can be further facilitated.

[Brief description of drawings]

FIG. 1 is a first aspect of the invention of claims 1 to 3;
It is a vertical cross-sectional front view showing the embodiment of FIG.

FIG. 2 is a vertical sectional side view of the same example.

FIG. 3 is a cross-sectional plan view of the same example.

FIG. 4 is a plan view of a lower column steel frame in the same example.

FIG. 5 is a second aspect of the invention of claims 1 to 3;
It is a vertical cross-sectional front view showing the embodiment of FIG.

FIG. 6 is a vertical sectional side view of the same example.

FIG. 7 is a cross-sectional plan view of the same example.

FIG. 8 is a plan view of a lower column steel frame in the same example.

FIG. 9 is a third view of the invention of claims 1 to 3;
It is a vertical cross-sectional front view showing the embodiment of FIG.

FIG. 10 is a vertical sectional side view of the same example.

FIG. 11 is a cross-sectional plan view of the same example.

FIG. 12 is a plan view of a lower column steel frame in the same example.

FIG. 13 is a vertical sectional front view showing a conventional example.

FIG. 14 is a cutaway plan view of the same example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lower pillar steel frame 2 ... Upper pillar steel frame 3 ... Lower horizontal plate 4 ... Upper horizontal plate 5 ... Fitting protrusion 6 ... Fitting through hole 7 ... Abutment bolt 8 ... Smooth surface 9 ... Small hole 10 ... Reinforcement plate 11 ... Nut 12 ... Groove 13 ... Back metal a, b ... Square steel pipe column c, d ... Erection piece e ... Connection plate f ... Bolt / nut

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takumi Fujii 1-5 Otsuka, Inzai-cho, Inba-gun, Chiba Incorporated company Takenaka Corporation Technical Research Institute (72) Satoshi Tanaka 4 Odori Nishi, Chuo-ku, Sapporo, Hokkaido No. 1 Takenaka Corporation, Hokkaido Branch (56) References Japanese Patent Laid-Open No. 59-102061 (JP, A) Actual Opening 49-150506 (JP, U) Actual Opening 63-53459 (JP, U) (58) ) Fields surveyed (Int.Cl. ⁷ , DB name) E04G 21/14-21/22 E04B 1/24

Claims (3)

(57) [Claims] 1. An upper and lower column steel frame 1 made of welded rectangular steel pipe .
The horizontal plates 3 and 4 are arranged to face each other between the two joints, and a fitting projection 5 having a non-circular cross section is provided at the center of one of the horizontal plates 3 and 4, and the other of the horizontal plates 3 and 4 is provided. A through hole 6 for fitting into which the fitting projection 5 is non-rotatably fitted is formed in the center, and further, one of the two horizontal plates 3 and 4 is fitted to an appropriate position of one of the peripheral parts to the other peripheral part. A plurality of abutment bolts 7 to be brought into contact with each other are provided so as to be freely adjustable in and out in the vertical direction, and when the pillar steel frame is constructed, the fitting projections 5 and the fitting through holes 6 are fitted and the abutment bolts 7 is brought into contact with the peripheral portion of the other horizontal plate and placed, and the abutment bolts 7 are adjusted to move in and out to adjust the vertical insertion of the column steel frame, and then the upper and lower joints are welded to each other. Non-erection piece work for erection of steel pillars . 2. Upper and lower column steel frames 1 made of welded square steel pipe
The horizontal plates 3 and 4 are arranged to face each other between the two joints, and a fitting projection 5 having a non-circular cross section is provided at the center of one of the horizontal plates 3 and 4, and the other of the horizontal plates 3 and 4 is provided. A through hole 6 for fitting into which the fitting projection 5 is non-rotatably fitted is formed in the center, and further, one of the two horizontal plates 3 and 4 is fitted to an appropriate position of one of the peripheral parts to the other peripheral part. A column steel frame erection device characterized in that a plurality of abutment bolts 7 to be brought into contact with each other are equipped so as to be adjustable in and out in the vertical direction. 3. Upper and lower column steel frames 1 made of welded rectangular steel pipe
The horizontal plates 3 and 4 are respectively placed at the upper ends of the lower column steel frames 1 and above the lower ends of the upper column steel frames 2 at the joints of the two, and are spaced apart from each other. Then, the fitting protrusion 5 having a cross-shaped cross section is erected in the center of the lower horizontal plate 3, and the fitting protrusion 5 is non-rotatably engaged and fitted in the center of the upper horizontal plate 4 at the four corners. A square fitting through hole 6 is formed, and a plurality of abutment bolts 7 that abut on the peripheral portion of the lower horizontal plate at appropriate positions on the peripheral portion of the upper horizontal plate 4 can be adjusted in and out vertically. A column steel frame erection device in which the upper surface of the peripheral portion of the lower horizontal plate 3 which is screwed and which abuts these abutment bolts 7 is a uniform smooth surface 8.