JP3055076B2 - Construction method of building frame - Google Patents

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 building frame such as a reinforced concrete high-rise building.

[0002]

2. Description of the Related Art For construction of a building frame such as a high-rise building made of reinforced concrete, a construction method is generally employed in which construction is performed in order from a lower floor to an upper floor. That is, a pillar on the first floor is constructed at a construction site, a floor slab serving as a second floor is arranged on the pillar, and then a second floor is placed on the floor slab.
The process of constructing the pillars of the floor portion and further arranging the floor slab serving as the third floor thereon is repeatedly performed. And, in this construction method, the work of lifting and installing each material such as formwork and reinforcing bars necessary for the construction of the pillars and prefabricated floor slabs to a predetermined floor is usually performed by a crane such as a tower crane. I use it.

[0003]

However, according to such a conventional construction method, since pillars and floors are constructed on each floor, work at high places is increased, which is unstable and dangerous. Requires a great deal of labor. In particular, the construction of pillars requires a process of installing a formwork, arranging reinforcing bars and placing concrete, and performing such a process at a high place involves a lot of labor and danger. It is inevitable.

Further, since materials for forming columns and floors are lifted to a high place by a crane, the labor required for transporting these materials is excessive, and the materials are easily affected by wind.
Troubles such as difficulty in work or damage to materials are often observed.

[0005] Further, since the construction requires a long period of time, there is a concern that bad weather may have a considerable adverse effect. In other words, the unfinished skeleton during the construction period is not exposed to the open-air environment because it is not covered with a cover to block this unfinished skeleton from rainfall etc., so if it is exposed to bad weather during the construction period Can not only hinder the work, but also force the change or interruption of the process plan. In particular, steps such as concrete placing require continuous work to some extent, and are susceptible to the weather.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and in order to reduce labor at high places to save labor and ensure safety, to reduce labor required for transporting materials, and to reduce weather. It is an object of the present invention to provide a method for constructing a building skeleton that can minimize the influence of the process on the process.

[0007]

SUMMARY OF THE INVENTION According to the present invention, after a pillar of a building is constructed, an operation of sequentially raising floor slabs forming the floor of each floor along the pillar is repeatedly carried out. A method for constructing a building frame in which slabs are arranged on floors of respective floors, wherein the step of raising the floor slabs is performed between floor slabs vertically adjacent to each other, that is, a floor slab of an upper floor and a floor slab of a lower floor. After the space is airtightly connected by a flexible film connected to the entire periphery of the floor slab, air is introduced into a closed space surrounded by the floor slab and the flexible film. By raising and lowering the floor slab of the upper floor and temporarily fixing the floor slab of the lower floor by repeatedly exhausting the air in the enclosed space, the operation is repeatedly performed, and This process It was solutions to implement in order from the top floor of the floor slab of the object of the lower floor side to the floor slab.

[0008]

According to the construction method of the building frame of the present invention, members such as floor slabs forming the floor of each floor can be manufactured or constructed on the ground, so that work at high places can be reduced. it can. In addition, since the construction of the pillars can be performed on the floor slab on the top floor from the beginning, a stable working environment is secured. Further, since the floor slab is raised from the ground to a predetermined floor by the above-described means, the labor required for transporting the floor slab can be reduced as compared with the conventional construction method in which the floor slab is lifted by a crane or the like. Further, according to this method of constructing a building frame, air is introduced into or exhausted from an enclosed space surrounded by two floor slabs and a flexible film that are vertically adjacent to each other. Since the floor slab raising process is performed, the process can be performed quietly and stably.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in the order of steps with reference to FIGS. In the present embodiment, an example in which this method of constructing a building skeleton is applied to a six-story reinforced concrete building is shown, and FIG. 1 shows an entire configuration of a skeleton constructed by this building method.

First, as shown in FIG. 2, on the ground,
The floor slab S6 forming the top floor of the building 1, that is, the floor of the sixth floor, and the floor slab S5 forming the floor of the lower floor (fifth floor) are manufactured. Here, the floor slab S refers to a concrete structure formed in a plate shape by providing a beam and casting concrete, and integrally joins a precast concrete slab formed in advance to a predetermined size on site. It is manufactured by a method or a method such as casting on site. Further, holes are formed in these floor slabs S at positions where the columns will be constructed later, through which the columns can penetrate.

The floor slab S6 of the upper floor is placed on the floor slab S5 of the lower floor and arranged at a predetermined position.
Between the floor slabs S6 and S5,
The flexible film 2 connected to the peripheral edge of S5 over the entire circumference is airtightly connected. The flexible membrane 2 is made of rubber, soft plastic, or the like, and has a ring shape having a height of about twice the height between the temporary fixing devices of the building 1. The bonding between the floor slabs S6 and S5 and the flexible membrane 2 is shown in FIG.
As shown in the figure, the channel 3 is joined to the peripheral edge of the floor slabs S6 and S5, and the airbag 4 is attached to the end of the flexible membrane 2 and the airbag 4 is fitted into the channel 3. It is carried out in. At this time, the flexible film 2
Is placed on the ground in a bent state without maintaining a certain shape.

On the floor slab S6 of the upper floor, a roof 5 for temporarily protecting the building 1 from an open-air environment such as rainfall during the construction period is temporarily constructed.

On the floor slab S6 of the upper floor,
Equipment such as a formwork 6 for constructing the pillar is assembled, and materials (rebar arrangements 8 and the like) and facilities (robots, forklifts, etc.) necessary for the pillar construction are prepared. Then, as shown in FIG. 3, the reinforcing bars 8 are assembled in the formwork 6 and the concrete 9 is cast, and the pillars 10a are constructed. This pillar 10a
It will be the pillar on the first floor of the building.

Next, air is introduced into a closed space 11 surrounded by the two floor slabs S6 and S5 and the flexible film 2. With the introduction of air, as shown in FIG. 4, the inside of the closed space 11 is pressurized, and the floor slab S6 of the upper floor is
It rises along the pillar 10a constructed earlier. At this time, the flexible film 2 is tightly stretched between the two floor slabs S6 and S5.

After the floor slab S6 of the upper floor has risen to a predetermined height, the floor slab S6 is temporarily fixed. That is, for example, as shown in FIG.
2 is extrapolated, and the floor slab S is
By supporting the lower surface of the floor 6, measures are taken to prevent the floor slab S 6 from descending.

Next, as shown in FIG. 5, air is discharged from the closed space 11 surrounded by the two floor slabs S6 and S5 and the flexible film 2. Since the floor slab S6 of the upper floor is temporarily fixed first, the floor slab S5 of the lower floor rises along the column 10a with the discharge of air. At this time, the flexible film 2 is drawn between the two floor slabs S6 and S5 and is bent.

After the floor slab S5 on the lower floor rises to near the lower surface of the floor slab S5 on the upper floor, the floor slab S5 is temporarily fixed by the temporary fixing ring 12 in the same manner as described above.

Next, on the floor slab S6 of the upper floor, a reinforcing bar (not shown) is arranged in the inside by using the formwork 6 already provided.
Is carried out and concrete is cast to construct the pillar 10b. The pillar 10b is to be continuously constructed on the upper layer of the previously constructed pillar 10a, and serves as a pillar on the second floor of the building. The joint between the pillar 10a and the pillar 10b is welded. And the like.

Next, the temporary fixing ring 12 temporarily fixing the floor slab S6 of the upper floor is removed, and the same process as described above is repeated several times again to execute the two floor slabs S6.
6, S5 is increased stepwise. At this time, the third floor of the building,
The construction of the pillars 10c, 10d, and 10e on the fourth and fifth floors is performed in the same manner as described above.

In this way, the floor slab S6 on the top floor is moved to the floor on the sixth floor, and the floor slab S5 on the lower floor is moved to the floor on the fifth floor. And 5 floors. On the sixth floor, columns 10f of the sixth floor are constructed by assembling the reinforcing bars 13 using the formwork 6 and casting concrete in the same manner as described above.

Next, on the ground, a floor slab S4 forming the fourth floor and a floor slab S3 forming the third floor are prepared. The floor slabs S4 and S3 are formed by joining a precast concrete slab formed to a predetermined size in advance or by casting in place.
It is manufactured so that Oa can penetrate. Then, after connecting these floor slabs S4 and S3 with the flexible film 2 in the same manner as the above-described process, air is introduced into the closed space 11 surrounded by the floor slabs S4 and S3 and the flexible film 2. The operation of raising each floor slab S4, S3 by repeating or discharging is repeated several floors. As a result, the floor slabs S4 and S3 are arranged on the fourth floor and the third floor, respectively, to form the fourth floor and the third floor of the building.

Next, a floor slab S2 for forming the second floor
And a floor slab S1 that forms the floor of the first floor, and the two are connected by the flexible film 2. Then, the floor slab S2 on the upper floor is raised in the same manner as described above. Thereby, the floor slab S2 is arranged on the floor portion of the second floor to form a second floor.
The floor slab S1 on the lower floor side is constructed as the first floor as it is.

In this manner, as shown in FIG. 1, a frame of a building composed of floors and columns is formed.

As described above, according to the construction method of the building frame of this embodiment, two floor slabs S, S adjacent vertically
The floor slabs S, S are raised and arranged on a predetermined floor portion by introducing air into or exhausting air from the enclosed space 11 surrounded by the flexible membrane 2 and the flexible membrane 2. Therefore, the floor can be constructed quietly and stably.

Further, since all of these floor slabs S are manufactured or constructed on the ground, work at high places can be reduced, and labor saving and work safety can be ensured. Furthermore, the construction of the pillar 10 is always the top floor (6th floor)
Since the work is performed on the floor slab S6, the work can be concentrated and performed efficiently in a stable work environment. This also makes it possible to carry out construction using a precision machine such as a robot, and has the potential for labor-saving or unmanned construction.

Since these floor slabs S are raised from the ground to a predetermined floor by the above-mentioned means, the labor required for transporting the floor slabs S can be reduced as compared with the conventional construction method in which the floor slabs S are lifted by a crane or the like. In addition, even during the construction of the pillars, the formwork 6, materials (reinforcing bars 8 and the like) and facilities (robots, forklifts) are placed on the top floor (sixth floor) floor slab S6 during the construction period. , Etc.) may be installed, so that there is no need to move them as the work progresses, and labor savings can be achieved. Further, since it is not necessary to lift by a crane or the like, it is not affected by wind or the like during the lifting, and the floor slab S and various materials can be prevented from being damaged.

The roof 5 is placed on the top floor slab S6.
In this case, all of the subsequent steps can be performed in an environment with a roof, and the effects of bad weather such as rainfall can be avoided. Therefore, all processes can be performed as scheduled without depending on the weather, and the extension of the construction period can be prevented.

The present invention is not limited to the above-described embodiment, and the specific configuration such as the shape and material of each member or the order of construction can be appropriately changed upon implementation.

For example, in the above-described embodiment, an example in which the present invention is applied to a six-story reinforced concrete building 1 has been described. However, the present invention is not limited to a six-story building and may be applied to the construction of a skeleton of other high-rise buildings. Of course it is possible.

The means for joining the flexible membrane 2 to the floor slabs S and the means for temporarily fixing the floor slab S are not limited to the examples shown in the above embodiments.

In the above-described embodiment, the size of the flexible membrane 2 is a ring shape having a height substantially equal to the height of one building. However, the present invention is not limited to this. With such a configuration, the number of repetitions of the lifting process of the floor slab S can be reduced.

[0032]

As described above, according to the method for constructing a building frame of the present invention, air is introduced into a closed space surrounded by two floor slabs and a flexible film which are vertically adjacent to each other. By discharging the air from the closed space, the floor slab is raised and disposed on the floor having a predetermined height, so that the floor can be formed quietly and stably. In addition, since all floor slabs can be manufactured or constructed on the ground, work at high places can be reduced, and labor saving and work safety can be ensured. In addition, since the construction of the pillars can be performed on the floor slab on the top floor from beginning to end, a stable working environment is ensured, and the work can be concentrated and efficiently performed. Further, since the floor slab is raised from the ground to a predetermined floor by the above-described means, the labor required for transportation can be reduced as compared with the conventional construction method in which the floor slab is lifted by a crane, etc. , Etc., and high quality can be maintained. In addition, if a roof is placed on this floor slab after the top floor slab has been manufactured, all subsequent processes can be carried out in an environment with a roof, and the effects of bad weather such as rainfall can be avoided. Becomes Therefore, all processes can be performed as scheduled without depending on the weather, and the extension of the construction period can be prevented.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating an overall configuration of a building body including floors and columns constructed in accordance with an embodiment of the method for building a building body according to the present invention.

FIG. 2 is a conceptual diagram showing a state where two floor slabs are connected by a flexible film.

FIG. 3 is a conceptual diagram showing a state in which a pillar is constructed on a floor slab on an upper floor.

FIG. 4 is a conceptual diagram showing a state where a floor slab on an upper floor is raised.

FIG. 5 is a conceptual diagram showing a state where a floor slab of a lower floor is raised.

FIG. 6 is a conceptual diagram showing an example of a joint structure between a floor slab and a flexible film.

FIG. 7 is a conceptual diagram showing an example of a temporary fixing structure of a floor slab.

[Explanation of symbols]

 S floor slab 1 building 2 flexible membrane 11 enclosed space

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoto Mine 1-3-2 Shibaura, Minato-ku, Tokyo Inside Shimizu Corporation (72) Inventor Takehito Tezuka 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu (72) Inventor Koji Ehara 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Dante N. Vini United States California 94118 San Francisco Maple Street 215 (58) Field surveyed (Int. Cl. ⁷ , DB name) E04B 1/35 E04G 21/14

Claims (1)

(57) [Claims] After the pillars of the building are constructed, the operation of raising the floor slabs forming the floor of each floor of the building along the pillars is sequentially and repeatedly performed, and each floor slab is moved to the floor of each floor. The method of building a building skeleton to be disposed in the section, the step of raising the floor slab, floor slabs vertically adjacent to each other, that is, between the floor slab of the upper floor and the floor slab of the lower floor, these floors After being connected in an airtight manner by a flexible film connected to the peripheral portion of the slab over the entire circumference, air is introduced into an enclosed space surrounded by the floor slab and the flexible film, thereby forming the upper floor. The floor slab is raised and temporarily fixed, and then the operation of raising and lowering the floor slab on the lower floor by exhausting the air in the closed space is repeatedly performed, and this step is performed.
A method for constructing a building skeleton, wherein the steps are sequentially performed from a floor slab on a top floor side of a building to a floor slab on a lower floor side.