JPH06323001A - Extension and reconstruction of building - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a method of renovating a building that does not dismantle an existing building, does not require relocation, and can be used to renovate the building. [Structure] A core part 4 of a new building is constructed in a space adjacent to the ground where the existing building 1 exists, and then an artificial structure of the new building is constructed from the core part 4 above the top of the existing building. After constructing the ground 5, the buildings 3 newly built on this artificial ground 5 are sequentially constructed, and then the existing building 1 is constructed.
Repair.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for expanding or renovating a building while using the existing building, and does not require dismantling or relocation of the existing building. Regarding the extension and renovation method.

[0002]

2. Description of the Related Art Recently, the momentum for protecting the cityscape has been increasing, and it is desired to preserve famous buildings, beautiful buildings and historic buildings. However, many years have passed since the construction of these buildings, and they are significantly deteriorated, and repairs and repairs are required to continue using them, and preservation of the building in its original shape is desired. It is rare. In addition, when it is used as an office in the building, it is necessary to increase the work space due to an increase in the number of personnel and OA equipment, and at the same time, various equipment is becoming obsolete to cope with the OA era. From this point as well, expansion and renovation are necessary, but temporary relocation and permanent relocation are inevitable.

On the other hand, from the viewpoint of effective use of urban space, buildings have been made higher in order to increase the utilization efficiency of the site as much as possible, but most of the buildings are before the establishment of the floor area ratio. And now, in places where these buildings are built, taller buildings can be built. Therefore, save the building,
Attempts have been made to measure the effective use of the site. These include the method of dismantling an existing building, then constructing a new building at the location where the existing building was dismantled, and incorporating only the exterior of the existing building into the new building, dismantling a part of the existing building,
There is a method of constructing a new building in the dismantled part. There is also a method in which an existing building is demolished and relocated, another existing building is rebuilt on a new land, and a new building is newly constructed at the place where the existing building was demolished.

[0004]

However, since any of these methods involves demolition of the existing building, it takes a long time until the completion of the renovation, and the existing building cannot be used during the renovation, and temporary relocation or There are various problems such as forced suspension of work, generation of a large amount of waste material due to dismantling, noise during dismantling work, and generation of dust. In addition, if the existing building is relocated, the offices will be dispersed if it is used as an office, resulting in reduced work efficiency, communication problems between offices, double investment in various equipment, etc. There is also the problem of. These solutions were enormous as desired from the future of the city. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for preserving an existing building without dismantling it and performing an extension / reconstruction that does not require relocation.

[0005]

According to the present invention, a core portion of a new building is constructed in an adjacent space where an existing building is not constructed, and the core portion is provided above the top portion of the existing building. This is a method of expanding and renovating a building, which is characterized by constructing an artificial ground for a new building, then sequentially building a new building on this artificial ground, and then repairing the existing building.

[0006]

According to the extension and renovation method of the present invention, the artificial ground is provided above the top of the existing building, the extension is constructed on the artificial ground, and the worker is moved from the existing building to the existing portion. Since the building will be renovated, it will be possible to renovate it while continuing to use the existing building.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an existing building and site where the present invention is implemented. Reference numeral 1 indicates an existing building, and 2 indicates a courtyard which is an adjacent space on the site. The existing building 1 according to the present embodiment has two courtyards 2 inside the building.

According to the present invention, first, the foundation of a building newly built from the courtyard 2 is constructed. (Not shown.) As the structure of the foundation, since the load from the core portion 4 is concentrated, it is desirable to have a structure having a large proof stress to withstand this. Also, the foundation can be constructed by any method. As an example, a continuous underground wall is built up to the support ground around the courtyard 2 on all four sides. After that, the ground is excavated while the beam support of the front connecting wall is being carried out, and then the excavation to the support ground is completed. Build the body.

After the foundation has been constructed, the core portion 4 of the new building 3 is constructed as shown in FIG. The core part 4 also serves as a material / equipment carry-out route, a worker's entrance / exit route, and a supporting structure for lifting equipment during construction of the new building 3. Since the core portion 4 transmits the large load and stress of the upper floor 6 to the foundation, it is necessary to design it accordingly. Core part 4
Although a conventionally known method is used as the construction method of (3), when the core part adopts RC structure, the sliding form method can be adopted to further shorten the construction period.

The construction of the core portion 4 is performed by stairs which are higher than the height of the existing building 1 by a predetermined height, and the artificial ground 5 is constructed as shown in FIG. Structurally, the artificial ground 5 has a huge beam of the upper floor 6 of the new building 3 constructed above this structure and has a large beam to be firmly joined to the core portion 4. The structure of the giant beam is preferably a structural type capable of withstanding large stress, such as Fehrendale beam, truss beam, and prestressed beam.
The front artificial ground 5 also serves as a curing facility that protects the existing building 1 from the danger of falling objects during the construction of the new building 3.

After the construction of the artificial ground 5 is completed, the upper floor 6 of the new building 3 including the core 4 is constructed as shown in FIG. When constructing the upper floor 6, equipment from the core section 4,
Since the personnel are moved, the existing building 1 is not affected at all. Further, since the upper floor 6 is constructed in the upper layer portion of the artificial ground 5 which has been subjected to drop curing, the existing building 1 below is also safely protected from this point. After the construction of the upper floors 6 is completed, the storage items, fixtures, various equipment and the like in the existing building 1 are moved to the new building 3 and the use of the new building 3 is started. As already mentioned, the foundation and core part 4 are constructed in the courtyard (adjacent space) 2 of the existing building 1, and the upper floors of the new building 3 are also constructed on the artificial ground 5 through the core part 4, The existing building 1 is not affected during the construction of the new building 3. Therefore, even while the new building 3 is being constructed, the existing building 1 can be used continuously, and the new building 3 can be used after moving,
Business will continue.

Thereafter, as shown in FIG. 5, the interior and exterior of the existing building 1 are refurbished, and if necessary, the upper floor 6 and the existing building 1 are remodeled.
Will be integrated with the existing building and the renovation work will be completed. The construction of the core portion 4 is not limited to the courtyard having the shape as in this embodiment, but may be an adjacent space in the site as in another example shown in FIG.

[0013]

As described above, according to the present invention, a core portion of a new building is constructed in an adjacent space where an existing building is not constructed, and the core portion is located above the top of the existing building. The artificial ground of the newly built building in the department,
After that, new buildings will be constructed one after another on this artificial ground, and the existing buildings will be refurbished after that.Therefore, it is not necessary to dismantle the existing buildings, and the buildings to be preserved can be preserved while maintaining the prototype of the buildings. Yes, there is no need to temporarily move existing buildings to other buildings when constructing new buildings, and decentralization can be avoided. Also, the existing building can be used continuously while the new building is being constructed.

Moreover, since the existing building is not dismantled, no industrial waste is generated due to the dismantling, no noise or dust is generated at the time of dismantling, and sufficient consideration is given to global environmental problems. Moreover, the period from the start of construction of a new building to the movement of the existing building to the new building is short and economical. Even during the construction of a new building, the core part is constructed first, then the artificial ground is constructed, and then the upper floors are constructed, so the influence on the existing building at the bottom of the construction is minimized. Continued use of existing buildings during construction of new buildings will be realized.

[Brief description of drawings]

FIG. 1 is a plan view showing the relationship between an existing building and a site.

FIG. 2 is a diagram showing the construction of a core part.

FIG. 3 is a diagram showing construction of artificial ground.

FIG. 4 is a diagram showing construction of an upper floor.

FIG. 5 is a diagram showing the renovation of an existing building and the integration with an upper floor.

FIG. 6 is a plan view showing the relationship between another existing building and the site.

[Explanation of symbols]

 1 Existing building 2 Courtyard (adjacent space) 3 New building 4 Core part 5 Artificial ground 6 Upper floor

Claims (1)

[Claims] 1. An adjacent space where an existing building is not constructed,
Build the core part of the new building, build the artificial ground of the new building from the core part above the top of the existing building, and then sequentially build the new building on this artificial ground The building extension and renovation method, in which the existing building is renovated afterwards.