JPH11293834A - Method for constructing floor of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further enhance the efficiency of constructing a floor by use of field reassembling construction method. SOLUTION: Each girder comprises two girder component members 13 having laterally symmetrical cross-sectional shapes. The inside girder component member 13 is prepared for each of the girders on the four sides of one floor section. The four girder component members 13 are arranged in a rectangular shape on the ground and the adjacent girder component members 13 are coupled together by welding ties rods 14 thereto. Beams 15 are welded to the girder component members 13 and all of deck plates 1 of the floor section are put thereon to construct a floor structure frame 16. The floor structure frame 16 is hoisted to a construction floor by a crane and the ends of the girder component members 13 are joined to corresponding columns 4. The two girder component members 13 aligned at the boundary between the floor structure frames 16 installed on the adjacent floor sections serve as girders. Thus, the girders and most of floor members can be preassembled on the field, so that work done at high places is remarkably reduced and so that the number of times of crane hoisting is reduced. Since the rigidity of the floor structure frame is great, the need for any special lifting jigs is eliminated and a temporary reinforcing frame is also not necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a so-called "construction of a floor of a building" in which certain parts of the floor are assembled in advance on the ground and then lifted up on a construction floor with a crane. The present invention relates to a floor construction method of a building called a terrain construction method.

Conventionally, as a floor construction method for constructing a reinforced concrete floor or a composite floorboard of a building, a method of constructing a floor on the ground in advance has been proposed.
A plurality of deck plates (floor plates) in a rectangular floor section surrounded by pillars are assembled together, and this is lifted by a crane to the construction floor (floor under construction where the deck plates are being laid). There have been proposed various floor construction methods of buildings called so-called ground construction method (see Japanese Patent Publication No. 59-10453). The deck plate is a mere concrete formwork in the case of a reinforced concrete floor, and is a formwork and strength member in the case of a composite floorboard. In a conventional general ground construction method, a deck plate 1 and small beams 2 are assembled on the ground to form a large floor panel 3 as shown in FIG. 10, and this large floor panel 3 is not shown. Using a lifting jig, lift it up to the construction floor with a crane.
As shown in FIG. 1, the beam is placed on girders 5, 6 made of, for example, H-section steel or the like joined between the columns 4, and both ends of the girder 2 are joined to the girders 6. In this case, usually, the deck at the extreme end in the width direction of the deck plate (the one on the girder 6 side) so that bolting and welding work for joining the end of the girder 2 to the girder 6 can be easily performed. The plate is excluded from the large floor panel 3. Therefore, the part of the removed deck plate becomes gaps 7 and 8 (shown by hatching) when the large assembled floor panel 3 is placed on the girders 5 and 6 on the construction floor.
Reference numeral 9 denotes a deck receiver for receiving the excluded deck plate, which is welded and fixed between the beams 5 and 6 near the column 4.

There is also a construction method in which, in addition to a deck plate 1 and a small beam 2, a single beam 6 is pre-assembled on the ground like a large assembled panel 3 'shown in FIG. 61-221436, etc.).

[0004]

SUMMARY OF THE INVENTION
Since a plurality of deck plates 1 in one floor section are assembled on the ground in advance, there is an advantage that work at heights such as deck plate laying performed on the construction floor can be significantly reduced, and construction efficiency is improved. . However, the large floor panel 3,
The deck plate excluded in 3 'needs to be laid on the construction floor, and will remain as work at height. Also, the work of laying the deck plate is twice as troublesome on the ground and high places, which is not efficient. Fig. 1
In the construction method 0, all the girders were required. In the construction method shown in FIG. 13, most of the girder beams had to be hung by a crane independently and attached to the pillars. The plates also need to be lifted separately by a crane, which increases the number of times the crane is hung and reduces work efficiency. In addition, all of the large floor panels 3, 3 '
Since it is not a structure with a frame around it, the rigidity of the panel is weak, and in order to suspend the crane, a special hanging jig is necessary,
It is also necessary to attach a temporary reinforcing frame to 3 ', which is complicated and poor in workability. In addition, the conventional construction method
Although it is not particularly related to the improvement of the construction efficiency of the steel framing with respect to the girders, it is desirable if the construction efficiency of the steel framing itself can be improved, because the operability of the whole building is further improved.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and when constructing the floor of one floor section surrounded by pillars, the specific gravity of the assembling work on the ground including the steel frame is increased. Work at high places can be further reduced, and the number of times the crane is suspended can be reduced.
It does not require special hanging jigs, nor does it require the installation of temporary reinforcing frames, which allows the floor to be constructed efficiently, including the construction efficiency of girder construction. The purpose is to provide a construction method.

[0006]

According to a first aspect of the present invention, there is provided a method of building a floor of a building, comprising: using two girder members having a symmetrical cross section in a girder material to be joined between pillars; On the ground, only the inner girder components of each of the four girder members forming one rectangular floor division defined by four pillars are arranged in a rectangular shape corresponding to the floor divisions, and are connected by connecting members. Adjacent girder components are connected to each other to form a floor structural frame, and then the floor structural frame is lifted to the construction floor, and then the ends of each girder component of the floor structural frame are assigned to a corresponding column. And then laying a floor board on the floor structural frame.

According to a second aspect of the present invention, there is provided a method of building a floor of a building, in which a girder material to be joined between the columns is divided into four columns on the ground by using two girder constituent members having a symmetrical sectional shape. Only the inner girder components of each of the four girder members forming one rectangular floor section are arranged in a rectangular shape corresponding to the floor section, and the adjacent girder components are connected to each other by a connecting member. And the beam structure is constructed by passing the beam between the opposing girders and forming a floor structure frame. Then, this floor structure frame is lifted to the construction floor, and then the ends of each girder component member of the floor structure frame correspond to each other. And then laying a floor plate on the floor structural frame.

According to a third aspect of the present invention, there is provided a method of constructing a floor of a building, in which a girder member to be joined between the columns is divided into four columns on the ground by using two girder constituent members having symmetrical cross-sectional shapes. Only the inner girder components of each of the four girder members forming one rectangular floor section are arranged in a rectangular shape corresponding to the floor section, and the adjacent girder components are connected to each other by a connecting member. And after passing the small beams between the opposing girders and joining them, the floor plate is put on to construct the floor structural frame, and then this floor structural frame is lifted to the construction floor, and then each of the girders of this floor structural frame It is characterized in that the ends are respectively joined to the corresponding columns.

A fourth aspect of the present invention is characterized in that the floor panel according to the first, second or third aspect is a deck plate for constructing a reinforced concrete floor or a composite floor panel.

A fifth aspect of the present invention is characterized in that the floor plate according to the first, second or third aspect is a concrete slab.

According to a sixth aspect of the present invention, a Z-section steel is used as the girder constituting member according to the first, second, or third aspect, and the floor structural frame is positioned such that an upper flange edge of the Z-section steel is positioned inside four sides. After the floor structure frame is connected to the lifting column on the construction floor for each floor section, concrete is cast between the opposing beam members on the girder at the boundary of each floor section. It is characterized by forming.

According to a seventh aspect of the present invention, a channel steel is used as a girder constituent member according to the first, second or third aspect, and the floor structural frame is disposed such that a flange edge of the channel steel is inside four sides. And for each floor section,
After the floor structural frame is joined to the lifting column on the construction floor, the webs of a pair of back girder components of the girders at each floor section boundary are joined by bolts to form a steel girder.

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. The floor construction method for a building according to this embodiment is for a case where a reinforced concrete floor or a composite floor plate is constructed using a deck plate. In the present invention, the girder material to be joined to the column is constituted by two girder constituent members having a symmetrical cross-sectional shape. In the present invention, the columns, large beams and small beams are all made of steel. The floor plate to be used is a deck plate made of steel, a concrete slab, or the like. In the embodiment, the floor plate is a deck plate. The girder material is a girder itself in the case of a building having a steel structure, and is a part of the girder in the case of a building having a steel reinforced concrete structure (SRC construction).

The embodiment shown in FIGS. 1 to 6 is a case of SRC construction, and the girder 11 is a steel material constituting a part of a girder 12 (see FIG. 6) which is a steel reinforced concrete beam.
In the embodiment, a Z beam is used as the girder constituent member 13 constituting the girder material 11.

The construction procedure will be described. For a four-sided giant beam 1 corresponding to a rectangular floor section divided by four pillars,
An inner girder constituent member 13 is prepared. On the ground, as shown in FIG. 1, the four girder components 13 prepared as described above are arranged in a rectangle, and the connecting members 14 are arranged at the four corners between the vicinity of the ends of the adjacent girder components 13. Bolted, and in the example shown, two small beams 15
Is welded between the opposed large beam constituent members 13 to form a rectangular frame 17 with small beams. FIG. 2 is an enlarged cross-sectional view of FIG. Pillars 4 indicated by dotted lines in FIG. 1 are for explaining the positional relationship. Next, as shown in FIG. 3, all the deck plates 1 for the floor section are placed on the rectangular frame 17 with the small beams, and the surrounding large beam constituent members 13 are placed.
Further, the floor structure frame 16 is fixed to the small beam 15 by studs, plug welding, stud welding, or the like. The connecting member 14 joins the adjacent girder constituent members 13 and also serves as a deck receiver for receiving the deck plate 1 on the end side. FIG.
(A) is a schematic enlarged cross-sectional view taken along the line BB of FIG. 2, FIG.
(B) is a sectional view taken along the line CC. In this way, almost all members in one floor section are assembled in advance on the ground.

The floor structure frame 16 is lifted by a crane and transported to the floor section on the construction floor (floor under construction where the deck plate is to be laid), and the end of each girder component 13 is shown in the drawing. Then, it joins to the column 4 of a square steel pipe. FIG. 5 shows a state in which the floor structural frame 16 is joined to the column 4 for the floor section (the area surrounded by the four columns 4 shown). The upper and right sides of the floor section are floor sections to be subsequently constructed. Although not shown, a girder receiving member for receiving the girder member 11 is fixed to the column 4 side in advance by welding, and the end of the girder constituent member 13 is bolted to the girder receiving member with a joint plate attached thereto. The floor structure frame 16 is similarly joined to the pillars 4 for all the floor sections on the construction floor, and after completing the construction of the steel frame of the beam material and the laying of the deck plate 1, the reinforcement is arranged on the floor structure frame 16 and the concrete is laid. 6, a reinforced concrete floor or a composite floor plate is constructed as shown in FIG. 6, and the casting is carried out inside the girders 11 (that is, in the space between two opposite Z-shaped steels which are the girders constituting members 13). The girders 12, which are steel-framed reinforced concrete beams, are constructed from the concrete thus obtained. In this way, the girder material 11 composed of the two opposing girder constituent members 13 functions not only as a mold but also as a strength member.
FIG. 6 shows that the stud bolt 18 for joining with the concrete is welded and fixed to the girder constituent member 13 (however, in this case, the girder constituent member 13 before the assembly in FIG. 1 is attached). It has already been fixed by welding). If necessary, a flat bar or the like may be attached to the butt portion and fixed by welding (not shown) between the lower flange edges 13b on the lower side of the Z-shaped steel member (girder component 13).

FIG. 7 shows another embodiment. This embodiment is
A channel steel is used as the girder constituent member 23 constituting the girder material 21. This embodiment is a case of a steel frame structure, and the girder 21 itself becomes a girder. This girder member 21 is formed by joining a web of channel steel (girder component member 23) back to back to form an H shape, and joining the web with bolts and nuts 20. The procedure for making the floor structure frame 26 and the procedure for installing it on the construction floor are basically the same as those in the embodiment described with reference to FIGS.

When a Z-section steel is used as the girder component, as shown in FIG. 8, the girder component 13 is turned in the opposite direction to the embodiment described with reference to FIGS. It is also possible to arrange the upper flange edge 13a of the opposing large beam constituent member 13 in 11 to face inward and the lower flange edge 13b to face outward. When a channel steel is used as a girder component, the girder component 23 is turned in the opposite direction to that of the embodiment described with reference to FIG. It can also be used to form a square pipe facing away. In the embodiment of FIGS. 8 and 9, concrete cannot be poured into the inside of the girder, so that the steel beam structure (steel beam) is usually used. In short, it is only necessary that the girder member be composed of two steel members (girder girder members) having a symmetrical cross-sectional shape.

In the above-described embodiment, the deck plate is previously assembled on the ground. However, on the ground, a small beam composed of the girder constituent member 13, the small beam 15, and the connecting member 14 is provided without installing the deck plate. A floor frame is composed of only the rectangular frame 17, and this is lifted by a crane on the construction floor.
After joining, the deck plate 1 can be laid on this floor structural frame (rectangular frame with small beams). Further, on the ground, the floor structure frame is composed of only the rectangular frame composed of the girder constituent members 13 and the connecting members 14 without assembling any of the deck plate and the small beams, and the floor structural frame is lifted on the construction floor by the crane 4 on the construction floor. After joining, it is also possible to join the beams 15 and to lay the deck plate 1. In the above embodiment, the target floor section has small beams. However, when no small beams are used in the floor section, the floor structural frame to be assembled on the ground is naturally a large beam structure as a beam member. The structure has only members and no beams.

Further, the present invention is suitable for application to a floor construction using a deck plate. However, the present invention is also applicable when a concrete slab or the like is used instead of the deck plate.

[0021]

According to the present invention, the girder is composed of two girder components having right and left symmetrical cross-sectional shapes. However, all the girder can be assembled on the ground, and the girder steel construction method can be used. Construction efficiency can be improved. And, among the members constituting the floor, most members except concrete can be assembled on the ground, so that work at heights is significantly reduced. Also, since most of the members can be assembled on the ground, the number of times of crane suspension is greatly reduced, and workability is greatly improved.

Further, when assembling the floor structural frame on the ground, some deck plates are not excluded from the floor structural frame,
Since all deck plates can be assembled,
There is no problem that the work of laying the deck plate has to be done twice on the ground and high places, and the workability is good.

The floor structural frame has a structure in which a girder component is formed as a frame around the frame, and has a sufficiently high rigidity, so that it can be suspended by a crane without using a suspending jig. It is naturally unnecessary to temporarily attach the frame, which greatly simplifies construction and improves workability.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram illustrating a method of building a floor of a building according to one embodiment of the present invention, and is a plan view of a rectangular frame with small beams before a deck plate (floor plate) is placed on a floor structural frame to be assembled on the ground. is there.

FIG. 2 is an AA cross-sectional view schematically enlarged in FIG.

FIG. 3 is a plan view of a floor structure frame configured by placing a deck plate on the rectangular frame with small beams in FIG. 1;

FIG. 4A is a schematic enlarged view of BB in FIG.
FIG. 2B is a cross-sectional view of FIG.

FIG. 5 is a plan view illustrating a method for constructing a floor of a building according to the present invention, in which the floor structural frame of FIG. 3 is lifted to the floor section on a construction floor by a crane and joined to a pillar.

FIG. 6 is a cross-sectional view corresponding to the DD cross-sectional view of FIG. 5 (after the concrete has been cast), showing a state where concrete is cast on the floor structural frame after the stage of FIG. 5;

FIG. 7 is a view showing an embodiment in which a girder member is formed by using a channel steel as a girder constituent member, and is a view corresponding to a cross-sectional view taken along line DD of FIG.

FIG. 8 is a view for explaining an embodiment in which a Z-beam, which is a girder constituent member of the girder material, is used in a direction opposite to that of FIG.

FIG. 9 is a view for explaining an embodiment in which a channel steel, which is a girder constituent member constituting a girder member, is used in a direction opposite to that of FIG.

FIG. 10 is a plan view of a large floor panel assembled on the ground, for explaining a conventional floor building method of a building.

FIG. 11 is a plan view illustrating a conventional method of constructing a floor of a building, in which a large assembled floor panel of FIG. 10 is lifted to a construction floor by a crane and joined to a pillar.

FIG. 12 is an enlarged sectional view taken along the line EE in FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deck plate (floor board) 4 pillars 11 girders 21 girders (also girders) 12 girders 13, 23 girders 14 connecting members 15 girder 16 floor structure frame 17 rectangular frame with girder

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[Procedure amendment]

[Submission date] June 29, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram illustrating a method of building a floor of a building according to one embodiment of the present invention, and is a plan view of a rectangular frame with small beams before a deck plate (floor plate) is placed on a floor structural frame to be assembled on the ground. is there.

FIG. 2 is an AA cross-sectional view schematically enlarged in FIG.

FIG. 3 is a plan view of a floor structure frame configured by placing a deck plate on the rectangular frame with small beams in FIG. 1;

FIG. 4A is a schematic enlarged view of BB in FIG.
FIG. 2B is a cross-sectional view of FIG.

FIG. 5 is a plan view illustrating a method for constructing a floor of a building according to the present invention, in which the floor structural frame of FIG. 3 is lifted to the floor section on a construction floor by a crane and joined to a pillar.

FIG. 6 is a cross-sectional view corresponding to the DD cross-sectional view of FIG. 5 (after the concrete has been cast), showing a state where concrete is cast on the floor structural frame after the stage of FIG. 5;

FIG. 7 is a view showing an embodiment in which a girder member is formed by using a channel steel as a girder constituent member, and is a view corresponding to a cross-sectional view taken along line DD of FIG.

FIG. 8 is a view for explaining an embodiment in which a Z-beam, which is a girder constituent member of the girder material, is used in a direction opposite to that of FIG.

FIG. 9 is a view for explaining an embodiment in which a channel steel, which is a girder constituent member constituting a girder member, is used in a direction opposite to that of FIG.

FIG. 10 is a plan view of a large floor panel assembled on the ground, for explaining a conventional floor building method of a building.

FIG. 11 is a plan view illustrating a conventional method of constructing a floor of a building, in which a large assembled floor panel of FIG. 10 is lifted to a construction floor by a crane and joined to a pillar.

FIG. 12 is an enlarged sectional view taken along the line EE in FIG. 11;

FIG. 13 illustrates another conventional floor construction method of a building.
Therefore, it is a plan view of a large assembled floor panel assembled on the ground.

[Description of Signs] 1 Deck plate (floor plate) 4 Pillar 11 Large beam material 21 Large beam material (also a large beam) 12 Large beam 13,23 Large beam component 14 Connecting material 15 Small beam 16 Floor structure frame 17 Rectangular frame with small beam

Claims (7)

[Claims] 1. A girder material to be joined between columns is formed by using two girder components having symmetrical cross-sectional shapes to form one rectangular floor section divided by four columns on the ground. Only the girder components inside each of the girder members of the book are arranged in a rectangular shape corresponding to the floor section, and the adjacent girder components are connected to each other by a connecting member to form a floor structural frame. The floor structural frame is lifted to the construction floor, and then the ends of each girder structural member of the floor structural frame are joined to the corresponding columns, respectively, and a floor board is laid on the floor structural frame. Building floor construction method. 2. A method of forming a rectangular floor section divided by four columns on the ground using two large beam structural members having a bilaterally symmetrical cross-sectional shape of a large beam material joined between columns. Only the inner girder components of each of the girder members are arranged in a rectangular shape corresponding to the floor section, and adjacent girder components are connected to each other by a connecting member, and small beams are placed between the opposing girder members. Cross-connect to form a floor structural frame, then lift this floor structural frame to the construction floor, then join the ends of each girder component of the floor structural frame to a corresponding column, and then A floor building method for a building, comprising laying a floor plate on a structural frame. 3. A rectangular floor section defined by four pillars on the ground is formed by using two girder constituent members having a symmetrical cross-sectional shape in a girder material joined between the pillars. Only the inner girder components of each of the girder members are arranged in a rectangular shape corresponding to the floor section, and adjacent girder components are connected to each other by a connecting member, and small beams are placed between the opposing girder members. After cross-joining, the floor structure is put on the floor plate to construct the floor structure frame, then this floor structure frame is lifted to the construction floor, and then the ends of each girder component of the floor structure frame are connected to the corresponding columns, respectively. A floor building method for a building, characterized in that: 4. The floor construction method according to claim 1, wherein said floor panel is a deck plate for constructing a reinforced concrete floor or a composite floor panel. 5. The method according to claim 1, wherein said floor plate is a concrete slab. 6. A Z-section steel is used as the girder component, and the floor structural frame is arranged such that an upper flange edge of the Z-section steel is located inside four sides. 2. The method according to claim 1, wherein after the floor structural frame is joined to the lifting column on the construction floor, concrete is poured between opposing large beam components of the large beam at the boundary of each floor section to form a large beam. , 2 or 3 floor construction method of a building. 7. A channel steel is used as said girder structural member, and said floor structural frame is arranged and arranged such that a flange edge of said channel steel is inside four sides. After the floor structural frame is joined to the lifting columns on the construction floor, the webs of a pair of back-to-back girders of the girders at each floor section boundary are joined by bolts to form steel girders. The floor construction method for a building according to claim 1, 2, or 3.