JP6765933B2 - Construction method of the atrium of the building - Google Patents

Description

The present invention relates to a method for constructing a stairwell portion of a building in which a work gantry is installed so as to be able to be raised and fixed in a stairwell portion of a building, and the stairwell portion is constructed while the work gantry is raised and fixed from below to above.

In the construction of such an atrium, conventionally, a temporary gantry is used as a work gantry, that is, a gantry dedicated to work that needs to be removed after the work is completed, and the temporary gantry dedicated to the work is raised and fixed while the atrium portion is constructed. The actual situation is that the construction of (see, for example, Patent Documents 1 and 2) was carried out.

Japanese Patent No. 3579816 Japanese Patent No. 2808408

Therefore, in the conventional method described in the above patent document, it is necessary to bother to construct a temporary gantry that needs to be removed eventually, or to remove the constructed gantry after the work is completed, which not only increases the wasteful temporary cost but also the construction period. There was an inconvenience that it could lead to a long period of time.

The present invention focuses on such conventional problems, and an object of the present invention is a method for constructing a stairwell in a building, which eliminates the need for a temporary gantry, reduces temporary costs, and shortens the construction period. Is to provide.

The first characteristic configuration of the present invention is that the work gantry is installed in the atrium of the building so as to be able to be raised and fixed, and the atrium of the building is constructed while the work gantry is raised and fixed from the bottom to the top. The construction method is to use a main structure to be constructed above the atrium as the work platform.

According to this configuration, as a work platform to be installed in the atrium of the building, the main structure to be constructed above the atrium is used, and the atrium is constructed while the main structure is raised and fixed. Therefore, the temporary gantry becomes unnecessary, and the temporary cost, which was conventionally required, can be reduced.
Since the main structure is a structure that should be constructed above the atrium, it will be raised upward, which is the construction site, with the construction of the atrium, and the construction of the atrium and the main construction The construction of the structure can proceed rationally, and it is possible to shorten the construction period and reduce the construction cost.

The second characteristic configuration of the present invention is that the main structure is a floor structure constructed at the uppermost part of the atrium.

According to this configuration, since the main structure is a floor structure constructed at the uppermost part of the atrium, a floor structure that is relatively flat and suitable for work scaffolding or the like is used as a work platform. Construction up to the top of the atrium can be performed safely and reliably.

The third characteristic configuration of the present invention is that the atrium is rectangular in a plan view, and the main structure is formed on a plurality of rectangular structure portions over two opposite sides of the rectangular atrium. It is divided, and each of these structural parts can be raised and fixed separately.

According to this configuration, the main structure is divided into a plurality of rectangular structure parts, and each of these structure parts can be raised and fixed separately. Therefore, even if the main structure is heavy. However, each structural part can be easily raised by using a relatively small crane or the like.
Since each structure portion extends over two opposing sides of the rectangular atrium, each structure portion can be easily and stably fixed between the opposing walls of the atrium, and the atrium can be fixed. Can be easily and safely carried out.

The fourth characteristic configuration of the present invention is that the main structure is divided into three parts, a central structure part located in the center and a pair of side structure parts located on the sides of the central structure part. Each of the lateral structure portions is provided with a slide-type fixing mechanism that projects to the stairwell portion side and can be fixed to the stairwell portion on three sides other than the central structure portion side, and the central structure portion The sliding fixing mechanism is provided on two sides except the side of the side structure part, and the central structure part is placed between the central structure part and each side structure part. There is a point that it is equipped with a fixing mounting mechanism that mounts and holds from below.

According to this configuration, first, the central structure portion located in the center is raised, and the sliding fixing mechanism provided on the two sides thereof is projected and fixed to the atrium, and then the pair of side structures. The part is raised, and the sliding fixing mechanism provided on the three sides is projected and fixed to the atrium. As a result, the three sides of each side structure portion are fixed to the atrium, and the two sides of the central structure portion are fixed to the atrium.
Further, the central structure part is divided into three parts because the remaining two sides other than the two sides fixed to the atrium are placed and held by the pair of side structure parts by the fixing mounting mechanism. The structural parts are rationally and surely fixed to the atrium in cooperation with each other, and safe construction on the atrium becomes possible.

The fifth characteristic configuration of the present invention is that the atrium is an elevator parking atrium, and the main structure is a steel beam assembly of a floor structure constructed at the uppermost part of the elevator parking atrium. It is in the point that it is.

According to this configuration, for example, it can be applied to a tower condominium equipped with an elevator parking atrium, and the construction of the elevator parking atrium and the construction of the floor structure located at the top of the atrium can be rationalized. By doing so, it is possible to shorten the construction period and reduce the construction cost.

Cross-sectional plan of a tower apartment Plan view of the main structure used as a work platform Side view showing sliding fixing mechanism and peripheral deck Schematic side view showing the construction method of the atrium Schematic side view showing the construction method of the atrium Schematic side view showing the construction method of the atrium Schematic side view showing the construction method of the atrium

An embodiment of a method of constructing a stairwell portion of a building according to the present invention will be described with reference to the drawings.
The construction method of the present invention is, for example, in a building having a stairwell such as various apartment houses and hotels such as a tower condominium, a seismic wall is constructed around the stairwell and the surrounding wall surface is finished. It is applied when constructing the wall of the atrium.
When the building is a tower apartment, for example, as shown in FIG. 1, a rectangular elevator parking atrium EH and a shared facility space PH are arranged adjacent to each other in the center of the tower apartment TM and shared. Shared facilities (not shown) such as elevators and emergency stairs will be installed in the facility space PH. A common corridor C is arranged around the atrium EH for elevator parking and the common facility space PH, and a large number of dwelling units R equipped with balconies are arranged facing outward so that they can enter and exit from the common corridor C. A large number of such dwelling units R are arranged over multiple floors.

When constructing a wall 15 or the like around the atrium EH for elevator parking, a temporary work platform dedicated to construction work is usually installed in the atrium EH, and the work is carried out while being lifted by a crane installed on the roof. However, in the construction method of the present invention, the main structure 1 is used as the work gantry, as shown in FIG. 2, instead of using the temporary work gantry. Specifically, as shown in FIG. 7, the main structure 1 is a steel beam structure of the floor structure 2 constructed at the uppermost portion of the elevator parking atrium EH.
As shown in FIG. 2, the steel frame beam assembly 1 as the main structure is divided into three rectangular steel frame beam assembly portions 1a, 1b, and 1c over two opposite sides of the rectangular atrium EH. It is constructed by appropriately combining various shaped steels such as H-shaped steels. That is, the central steel frame part 1a as the central structure part located in the center and the side steel frame part 1b as a pair of side structure parts located on the side of the central steel frame part 1a. As shown in FIG. 3, a deck plate 3 is attached to the upper surface of each steel frame beam assembly portion 1a, 1b, 1c, and a temporary scaffolding plate 4 is placed on the deck plate 3.

Of the three steel frame beams 1a, 1b, and 1c, each of the side steel frame beams 1b and 1c is provided with a sliding fixing mechanism 5 on three sides except the central steel frame beam structure 1a side. That is, each side steel frame beam assembly portion 1b, 1c is provided with six slide-type fixing mechanisms 5 on the long side and one slide-type fixing mechanism 5 on the short side, and the central steel frame beam assembly. The portion 1a is also provided with three slide-type fixing mechanisms 5 on each of the two sides except the side steel beam assembly portions 1b and 1c.
These sliding fixing mechanisms 5 are structurally the same although they differ in size, and as shown in FIG. 3, they are fixed to the steel frames of the steel beam assembly parts 1a, 1b, and 1c by welding or bolts. It is composed of a holding member 6 made of hollow shaped steel having a rectangular cross section and a slide member 7 made of H-shaped steel inserted through the holding member 6, and the slide member 7 projects toward the wall side of the atrium EH as shown by a solid line. For example, there are a fixed posture in which the beam 8 is placed and fixed on the beam 8 for the stairwell portion constituting the stairwell portion EH, and a fixing release posture in which the steel frame beam assembly portions 1a, 1b, and 1c are retreated as shown by virtual lines. It is configured to be slidable.

In the central steel frame beam assembly part 1a, the central steel frame beam assembly part 1a is placed and held from below by a pair of side steel frame beam assembly parts 1b and 1c on the sides of each side steel frame beam assembly part 1b and 1c. Four mounting structures 9 are provided as mounting mechanisms for fixing. The mounting structure 9 is made of, for example, H-shaped steel, and projects from the upper surface of the steel frame of the central steel frame beam assembly portion 1a toward the steel frame side of each side steel frame beam assembly portion 1b and 1c by welding or bolts. It is fixed in the state.
Then, of the sides of the steel frame beam assembly portions 1a, 1b, and 1c, the side located on the wall side of the atrium portion EH closes the gap between the atrium beam 8 and the atrium beam 8 as shown in FIG. As shown by the solid line, a plurality of peripheral decks 10 for the purpose are placed and held on the deck receivers 11 provided at the steel frame beam assembly portions 1a, 1b, and 1c to close the gap in a horizontal posture. As shown by the imaginary line, the posture can be changed to the closed release posture which is oscillated and held upward and allows the rise of each steel beam assembly portion 1a, 1b, 1c.

Next, a specific procedure of the construction method according to the present invention will be described.
First, a steel beam assembly 1 composed of three steel beam assembly parts 1a, 1b, and 1c is constructed. It is preferable to construct the steel frame beam assembly 1 on the lower floor as much as possible, but if heavy machinery or building materials are placed on the lower floor and it is difficult to construct it, for example, as shown in FIG. 4, the third floor A temporary pedestal 12 is installed up to near the floor of the building. Then, the steel beam assembly parts 1a, 1b, and 1c are constructed on the gantry 12, and the slide member 7 of each slide type fixing mechanism 5 is projected toward the wall side of the atrium portion EH to be in a fixed posture, and each steel frame beam assembly part 1a is formed. It is fixed to the wall side of the atrium EH so that the upper surfaces of 1b and 1c are substantially the same height as the floor on the third floor.
After that, the gantry 12 was removed with each peripheral deck 10 in a closed posture, and as shown in FIG. 5, the standing horse 13 and the standing horse 13 and the steel frame beam assembly 1 composed of the three steel frame beam assembly parts 1a, 1b, and 1c were used as a work platform. While using the necessary equipment such as the pulley 14, the wall 15 on the 3rd floor is constructed by performing work such as installing the formwork, placing concrete, and removing the formwork, and finishing the surface as necessary. Do other work as well.

When the work on the third floor is completed, as shown in FIG. 6, the central steel beam assembly portion 1a is suspended by the crane 16 installed on the roof, and the slide type fixing mechanism 5 provided on the central steel frame beam assembly portion 1a is attached. The fixed release posture is set, the peripheral deck 10 is set to the closed release posture, and the crane 16 raises the peripheral deck 10 to the floor portion on the 4th floor. Then, the sliding fixing mechanism 5 is placed in a fixed posture, the central steel beam assembly portion 1a is fixed to the wall side of the atrium EH, and the peripheral deck 10 is placed in a closed posture.
After that, although not shown, the same crane 16 or another crane is used, and each side steel frame beam assembly part 1b, 1c is separately or simultaneously on the 4th floor in the same procedure as in the case of the central steel frame beam assembly part 1a described above. Raise it to the floor and fix it.
After that, the wall 15 of the 4th floor is constructed in the same manner as the above-mentioned 3rd floor, and the necessary work is performed. While repeating such a procedure, the elevator parking atrium EH is further operated from the 5th floor. The necessary work is sequentially performed for each floor up to the set floor (for example, the 33rd floor) corresponding to the top of the above.

After the work of the set floor portion is completed, as shown in FIG. 7, each steel frame beam assembly part 1a, 1b, 1c is raised by a crane, and each steel frame beam assembly part 1a, 1b, 1c is blown through by appropriate means. In addition to connecting and fixing to the wall side of the part EH, the steel beam assembly parts 1a, 1b, and 1c are also connected and fixed to each other. Then, if necessary, the sliding fixing mechanism 5 and the peripheral deck 10 are removed, and the scaffolding plate 4 on the deck plate 3 is removed.
After that, as shown in FIG. 7, concrete 17 is cast on the deck plate 3 to construct the floor structure 2 on the 34th floor at the uppermost part of the elevator parking atrium EH.

[Another Embodiment]
(1) In the above embodiment, the elevator parking atrium is illustrated as an example of the atrium EH, but the atrium is not particularly limited to the elevator parking atrium, and can be applied to various other atrium EHs. Further, the shape of the atrium EH does not have to be rectangular in a plan view.

(2) In the above embodiment, as an example of the main structure 1, the steel frame beam structure of the floor structure 2 constructed at the uppermost part of the atrium EH is illustrated, but for example, the floor structure 2 itself is mainly installed. It can also be used as the structure 1. In short, any structure can be used as the main structure 1 as long as it is a structure constructed on the upper part of the atrium EH and can be used as a work platform.

(3) In the above embodiment, an example in which the main structure 1 is divided into three structure parts 1a, 1b, and 1c is shown, but the main structure 1 is divided into two or four or more. Further, if the main structure 1 is relatively lightweight, it can be used as a work gantry without any particular division.
When the main structure 1 is divided into three parts, in the previous embodiment, an example in which the mounting structure 9 as a fixing mounting mechanism is provided on the central steel beam assembly portion 1a side is shown, but conversely, the side It is also possible to provide mounting structures on the lower surface side of the square steel beam assembly parts 1b and 1c, respectively, and to hold the central steel frame beam assembly part 1a from below by these mounting structures, and it is also a slide type fixing. The main structure 1 can be fixed to the wall side of the atrium EH by various fixing mechanisms other than the mechanism 5.

1 Steel beam assembly as a permanent structure 1a Central structure part 1b, 1c Side structure part 2 Floor structure 5 Sliding fixing mechanism 9 Fixing mounting mechanism TM Building EH Elevator parking atrium

Claims (5)

It is a construction method of the atrium of a building in which the work gantry is installed so as to be able to be raised and fixed in the atrium of the building, and the atrium is constructed while the work gantry is raised and fixed from the bottom to the top.
A method of constructing a stairwell portion of a building using a main structure constructed above the stairwell portion as the work platform. The method for constructing a stairwell portion of a building according to claim 1, wherein the main structure is a floor structure constructed at the uppermost portion of the stairwell portion. The atrium is rectangular in a plan view, and the main structure is divided into a plurality of rectangular structure portions extending over two opposing sides of the rectangular atrium, and each of the structure portions is divided into a plurality of rectangular structure portions. The method for constructing an atrium of a building according to claim 1 or 2, which can be raised and fixed separately. The main structure is divided into three parts, a central structure part located in the center and a pair of side structure parts located on the sides of the central structure part, and each of the side structure parts is divided into three parts. , The central structure portion is provided with a slide type fixing mechanism that protrudes toward the atrium side and can be fixed to the atrium portion on three sides excluding the central structure portion side, and the central structure portion excludes the side structure portion side. The sliding fixing mechanism is provided on two sides, and the central structure portion is placed and held from below by the lateral structure portion between the central structure portion and each side structure portion. The method for constructing an atrium of a building according to claim 3, further comprising a placement mechanism. Any one of claims 1 to 4, wherein the atrium is an elevator parking atrium, and the main structure is a steel beam structure of a floor structure constructed at the uppermost part of the elevator parking atrium. Construction method of the atrium of the building described in item 1.

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