JPH0762869A - Erection of frame structure - Google Patents

Abstract

PURPOSE:To easily carry out installation works of a frame structure at the upper side against the frame structure at the lower side. CONSTITUTION:The upper side column base 20 is guided in a specified position of the connected part in the lower column base 10, on the basis of the lowering motion of the upper side frame structure against the lower side frame structure by a guide member 30 provided at least at one of the column bases of the lower side column base 10 constituting the lower side frame structure and the upper side column base 20 constituting the upper side frame structure. The upper side frame structure against the lower side frame structure is positioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a frame structure, and more specifically, by stacking and connecting an upper layer frame structure to an upper portion of a lower layer frame structure already installed, The present invention relates to a method of constructing a large-scale frame structure.

[0002]

2. Description of the Related Art For example, in the case of constructing a large-scale frame structure in a chemical plant or the like, as shown in FIG. On the other hand, while constructing, the upper-layer frame structure B is temporarily assembled (pre-assembled) at the temporary assembly place G'adjacent to the construction site G, and then the upper-layer frame structure B as shown in FIG. 8B. A construction method called a so-called pre-assembly method or a block method is adopted in which the above are hung up by a large-sized crane, piled up on the lower-layer frame structure A which has already been installed and connected to each other.

[0003]

By the way, in the method for constructing a frame structure as described above, when the frame structure B on the upper layer side is stacked on the frame structure A on the lower layer side, the frame structure A is operated by a crane. The position of the frame structure B is adjusted, and at the final stage of the position adjustment work, the operator operates a not-illustrated tow rope (alley rope) tied to the frame structure B, which causes an error range of about 2 to 3 mm. The frame structure B is positioned with respect to the frame structure A. That is, the weight is 100 t (ton)
It requires extremely careful work to align the frame structure that becomes the front and back with the accuracy of mm using a large construction machine.It requires an operator with advanced crane operation technology and skilled skills. There is an inconvenience that a great amount of work time is required even by the operator. In view of the above situation, the present invention is
It is an object of the present invention to provide a method for constructing a frame structure that enables easy installation work of the frame structure on the upper layer with respect to the frame structure on the lower layer side.

[0004]

According to the present invention, at least one of the lower column base composing the lower layer frame structure and the upper column base composing the upper layer frame structure is provided. The guide member guides the upper column base to a predetermined position of the connecting portion of the lower column base based on the lowering motion of the upper layer frame structure with respect to the lower layer frame structure.

[0005]

According to the above construction, when the upper-layer frame structure is stacked on the lower-layer frame structure, the lower column base of the lower-layer frame structure and the upper side column base of the upper-layer frame structure are stacked. The alignment with the is automatically performed by the guide member.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing one embodiment. 1 to 7 show an example in which the method for constructing a frame structure according to the present invention is applied when a large-scale frame structure in a chemical plant is constructed by the above-mentioned pre-assembly method.

As shown in FIGS. 1 and 2, the lower column base 10 constituting the lower-layer frame structure and the upper column base 20 constituting the upper-layer frame structure together form a square tubular steel frame. , And four fitting plates 11, 11 ... Are provided on the upper outer peripheral surface of the lower column base 10, while the above-mentioned connecting plates 11, 11 are formed on the lower outer peripheral surface of the upper column base 20. 4 mounting plates 2 corresponding to 11 ...
1, 21, ... Are provided.

Further, at the upper end of the lower column base 10, a rectangular column base receiving plate 12 constituting a connecting portion is fixedly provided, and a guide is provided on the upper surface of the column base receiving plate 12. 4 guide plates 3 that make up the member
0 is set up.

A slanted guide portion 30a is formed on a side edge of the guide plate 30, and the four guide plates 30 are provided with the guide portions 30a, respectively, in front of, behind, left of the lower column base 10, It is attached to the column base receiving plate 12 in a state of being directed to the right. A positioning portion 30b extending in the up-down direction is provided at the base of each guide plate 30.

The guide plate 30 is formed of a metal material such as carbon steel, alloy steel, stainless steel, aluminum and aluminum alloy, or an appropriate material such as wood material or resin material according to the material of the column base. be able to.

The lower layer frame structure and the upper layer frame structure are respectively provided with a plurality of lower column bases 10 and upper column bases 20, and all of the lower column bases 10 and the upper column bases. The leg 20 is constructed as shown in FIGS.

[0012] Now, when installing the upper-layer-side frame structure that has been temporarily assembled (pre-assembled) on top of the lower-layer-side frame structure that has already been installed, first, the upper-layer-side frame structure is enlarged. After hoisting it from the temporary assembly place using the crane, move it to the upper area of the lower frame structure.

Next, the crane is operated to adjust the front-rear, left-right position of the upper-layer frame structure to the lower-layer frame structure, and then the upper-layer frame structure is moved to the lower-layer frame structure. Lower to stack.

At this time, when the axis line of the lower column base 10 and the axis line of the upper column base 20 are deviated from each other, as shown in FIG. 1A, the guide portion 30a of the guide plate 30 is provided with the upper column. The lower edge portion of the leg 20 comes into contact with the upper column base 20 and the upper column base 20 is guided by the guide portion 3 as the upper frame structure moves downward.
By laterally moving along the inclination of 0a, the upper column base 20 is guided to a predetermined position on the column base receiving plate 12 in the lower column base 10.

Here, as described above, the lower column base 10
The four guide plates 30 in FIG. 2 are provided with the guide portions 30a facing forward, rearward, leftward, and rightward, respectively. In either case, the upper column base 20 is guided to a predetermined position on the column base receiving plate 12 of the lower column base 10 as described above.

When the upper column base 20 is placed on the lower column base 10, the inner periphery of the upper column base 20 is aligned with the positioning portion 30b of the guide plate 30 as shown in FIG. 1 (b). By contacting the surfaces, the upper column base 20 is positioned with respect to the lower column base 10, that is, the upper layer frame structure is positioned with respect to the lower layer frame structure.

Even if there is some dimensional error in the spacing between the plurality of column bases constituting the frame structure, the lower side column base 10 is guided by the guide plate 30 as described above.
Since the position adjustment of the upper column base 20 is forcibly performed with respect to, the lower column column 10 and the upper column column 20 are joined with high positional accuracy.

When the upper column base 20 is placed on the lower column column 10, the four guide plates 30 provided on the lower column column 10 are all housed inside the upper column column 20. Therefore, the work of removing the guide plate 30 later is not required.

As described above, when the upper-layer frame structure is stacked on the lower-layer frame structure, even if the axes of the lower column base 10 and the upper column base 20 are slightly deviated from each other, the guide plate 30 Due to the action, the upper column base 20 is automatically guided to the predetermined position of the lower column column 10, so that the position adjustment work of the frame structure by the crane operation may be accurate to several cm, which is much easier than the conventional method. Workability will be greatly improved.

Further, due to the action of the guide plate 30 described above, it is possible to reduce or eliminate the work for adjusting the position of the frame structure by operating the tow rope (alley rope), so that the installation work of the frame structure can be facilitated. And it becomes possible to carry out in a short working time.

Further, since the installation work of the frame structure can be carried out in a short time as described above, the work time in an unstable state in which the frame structure which is a heavy object is suspended is significantly shortened. Is extremely preferable from the viewpoint of work safety as well as reduction of work in high places due to the operation of the tow rope.

After stacking the upper-layer frame structures on the lower-layer frame structures, the connecting plate 1 for the lower column base 10 is formed.
1 and the connecting plate 21 of the upper column base 20 are bolted to each other via a splice plate 40, and then the column base receiving plate 12 of the lower column base 10 and the upper column base 2 are connected.
By welding and joining the joint portion (joint portion) with the lower end edge portion of 0, the installation work of the upper layer frame structure to the lower layer frame structure is completed. After the welding work described above is completed, the connecting plates 11 and 21 are removed from the lower column base 10 and the upper column base 20, respectively.

The guide plate 30 'shown in FIG. 3 has an inclined guide portion 30a' and a vertically extending positioning portion 3a.
0a 'and the guide portion 30a' is formed in a curved line, the guide plate 30 "shown in FIG. 4 has an inclined guide portion 30a" and a vertically extending positioning portion 30a ". , The guide section 3
0a ″ is composed of an approximate curve composed of a plurality of straight lines.

As described above, the guide portion of the guide plate can be formed in an appropriate shape, and the guide plate 30 'and the guide plate 30 "shown in FIGS. 3 and 4 are also shown in FIGS. It goes without saying that the same operational effects as those of the above-described embodiment shown in Fig. 2 are obtained.In Fig. 3 and Fig. 4, the same components as those in Figs. A detailed description is omitted by adding a double dash (″).

The lower column base 110 and the upper column base 120 shown in FIG. 5 are both made of H-shaped steel, and are formed on both surfaces of the web 110W in the lower column base 110 and the outer surface of each flange 110F. Is the guide plate 1
30, 130 ... Are attached.

Each of the guide plates 130 has a slanting guide portion 130a and a vertically extending positioning portion 130b, which are arranged to face each other with the web 110W in between, and to the left and right with both flanges 110F in between. It is arranged opposite to.

Also in the above structure, when the upper-layer frame structure is lowered in the upper region of the lower-layer frame structure, the lower end portion (joint portion) of the upper-side column base 120 is connected to the guide plates 130. The guide part 130a guides the upper part (joint part) of the lower column base 110, and the positioning part 130b of each of the guide plates 130 causes
Since the upper column base 120 is positioned with respect to the lower column base 110, the installation work of the frame structure can be performed easily and in a short working time, as in the previous embodiment shown in FIGS. 1 and 2. It will be possible.

In the embodiment described above, the lower column base 1
Even after the 10 and the upper pedestal 120 are coupled, each guide plate 130 remains exposed to the outside.
If it is not preferable in the subsequent construction, each guide plate 130 may be removed from the lower column base 110.

The lower frame structure 200L shown in FIG.
Are three lower column bases 210 made of a cylindrical steel frame.
Are connected to each other via a triangular truss 201L, and a column base receiving plate 211 is fixedly attached to the upper end of each lower column base 210.

Further, a guide plate 230 is attached to the outer peripheral surface of the upper end portion of each of the lower column bases 210 in such a manner as to project toward the center of the frame structure 200L. Inclining guide portion 230a and vertically extending positioning portion 230
b.

On the other hand, like the frame structure 200L, the frame structure 200U on the upper layer side is made of a cylindrical steel frame.
The upper column bases 220 of the book are configured to be coupled to each other via a triangular truss 201U, and column base receiving plates 221 are provided at the lower ends of the respective upper column bases 220.
Is fixed.

According to the above structure, the lower frame structure 2
The upper frame structure 200U in the upper area of 00L
Is lowered, the column base receiving plates 221 of the upper column bases 220 are guided by the guide portions 230a of the guide plates 230 onto the column base receiving plates 211 of the lower column bases 210, respectively.

Further, the upper column bases 220 are positioned with respect to the lower column bases 210 by the positioning portions 230b of the guide plates 230, so that the lower layer frame structure 200L and the upper layer frame structure 200U. Are positioned and installed in the manner shown in FIG. Therefore, like the previous embodiment shown in FIGS. 1 and 2, the installation work of the frame structure can be performed easily and in a short work time.

The method for constructing a frame structure according to the present invention is effective not only when constructing a frame structure in a chemical plant as shown in the examples, but also when constructing various frame structures by the pre-assembly method. It goes without saying that it applies to.

Further, the method for constructing a frame structure according to the present invention is not limited to a frame structure using a steel frame as a structural material, and may be, for example, a resin material, an aluminum material and an aluminum alloy material, a wood material, or a concrete material. Needless to say, it can be effectively applied to the construction of various frame structures using various materials as structural materials.

[0036]

As described above in detail, in the method for constructing a frame structure according to the present invention, the lower column base constituting the lower frame structure and the upper column constituting the upper frame structure are constructed. The guide member provided on at least one of the side column bases causes the upper side column to move to a predetermined position of the connecting portion of the lower column base based on the descending motion of the upper layer frame structure with respect to the lower layer frame structure. Since it was configured to guide the legs, when stacking the upper layer frame structure on the lower layer frame structure,
The lower column base of the lower-layer frame structure and the upper column base of the upper-layer frame structure are aligned by the guide member, and the upper-layer frame structure with respect to the lower-layer frame structure is aligned. It became possible to easily carry out the work of installing the structure.

[Brief description of drawings]

1A and 1B are side views of essential parts of a lower column base and an upper column base showing a method of constructing a frame structure according to the present invention.

FIG. 2 is a perspective view of essential parts showing configurations of a lower column base and an upper column base.

FIG. 3 is a side view of a main part of a lower column base showing another embodiment of the guide plate.

FIG. 4 is a side view of a main portion of a lower column base showing still another embodiment of the guide plate.

FIG. 5 is a perspective view of a main part of a lower column base and an upper column base showing another embodiment of the present invention.

FIG. 6 is a perspective view of a main part of a lower-layer frame structure and an upper-layer frame structure, showing another embodiment of the present invention.

7 is a side view of essential parts showing a lower column base and an upper column base in the embodiment of FIG. 6. FIG.

8A and 8B are conceptual diagrams showing a conventional method for constructing a frame structure.

[Explanation of symbols]

 10, 110, 210 ... Lower column base, 20, 120, 220 ... Upper column base, 30, 130, 230 ... Guide plate (guide member), 200L ... Lower layer frame structure, 200U ... Upper layer frame Structure.

Claims (1)

[Claims] 1. A method of constructing a frame structure in which an upper layer frame structure is stacked and installed on a lower layer frame structure, which comprises a lower column base constituting the lower layer frame structure and an upper layer side structure. Based on the descending motion of the upper-layer frame structure with respect to the lower-layer frame structure, a connecting portion in the lower-side column base is provided by a guide member provided on at least one of the upper column bases constituting the frame structure. The method for constructing a frame structure, comprising: guiding the upper column pedestal to a predetermined position to position the frame structure on the upper layer with respect to the frame structure on the lower layer.