JP4012197B2 - Building extension method and building constructed by this method - Google Patents

Description

  The present invention relates to a method by which a resident can extend an existing building without moving to another place, and an extension building constructed by this method, and is particularly suitable when the existing building is aged. It is what is done.

  Conventionally, for example, in order to make a two-story building into a three-story building, a new three-story part cannot be built on the upper part of the second floor because of the strength of pillars, walls, beams, etc. There was no other way than removing all existing two-story buildings and building a three-story building on the site, but this conventional method is not only uneconomical, but also increases industrial waste. And the residents were forced to move until the new building was completed.

Therefore, in view of such circumstances, the present inventor proposes a construction method and a building that can be used for the extension in the vertical direction as it is without occupants moving temporarily, using existing buildings. (See Patent Document 1).
The invention described in Patent Document 1 is a novel in which a new foundation is provided so as to surround the existing building, and a new structure is constructed above the existing building by standing a steel column above the new foundation. This is an excellent invention that can solve many of the problems associated with conventional extension methods.

The invention method of Patent Document 1 is characterized in that an extension floor is formed above without dismantling and removing an existing building, and residents of the existing building continue to live in the existing building even after the completion of the extension. It is assumed that.
This is not a problem when the existing building is new, but when the existing building is aged, there is a big problem that the existing building may collapse due to the earthquake, which is very dangerous.

JP 2000-282696 A

  The present invention has been made in order to solve such problems, and can be used to add an existing building without a resident moving to another place. It is intended to provide a building extension method that can be renewed and a building constructed by this method.

The invention according to claim 1 is to provide an extension floor having a new living space above the existing building while maintaining the existing building using the extension column while standing around the existing building. Forming and moving residents of the existing building to the new living space, then dismantling and removing the existing building, and then building a beam on the extension pillar in the space created by the dismantling and removal. A building extension method for constructing a floor and providing an outer wall to form a new living space below the extension floor, comprising a plurality of buildings in which the existing buildings are arranged side by side, and the extension pillar It was installed to surround the entire plurality of existing buildings, the build-floor and forming over the entire plurality of existing buildings, part of the building of the plurality of existing buildings Only residents in the area will be moved to a new living space on the extension floor After dismantling and removing only the part of the building, then building a beam on the extension pillar in the space created by the dismantling and building a floor on it, the extension floor already completed The first stage of forming a new living space as a lower floor below the extension floor by providing a new outer wall around the extension pillar and performing interior work so as to be continuous with the outer wall of A resident of the remaining building of the plurality of existing buildings is moved to a new living space on the extension floor, and then the remaining building is demolished and removed in the space generated by the demolition and removal. After constructing the floor by laying beams on the extension pillar, install the new extension wall around the extension pillar so that it is continuous with the already completed outer wall, and perform the interior construction, the extension Form a new residential space as a lower floor below the floor Regarding build-method of a building, characterized in that it comprises a second step of completing the single build-product was.

The invention according to claim 2 relates to the building extension method according to claim 1 , wherein the first stage is repeated a plurality of times.

The invention according to claim 3 relates to a building constructed by the method according to claim 1 or 2.

According to the invention which concerns on Claim 1, since the living space is newly formed above the existing building in a state where the existing building is not dismantled and removed, the residents of the existing building move to other places. In addition, it is possible to move to a new living space only by moving upward within the same site, and it is possible to start living in a new room with almost no moving cost and labor.
In addition, because the existing building is demolished and removed, the risk of collapse of the existing building due to the earthquake can be eliminated, and a new living space is formed below the extension floor, so this new living space New residents can be moved in.
Further, when a plurality of side-by-side buildings are arranged side by side, it is possible to reconstruct them into one new extension.
In addition, when there is a difference in the age of multiple existing buildings in parallel, only old buildings should be dismantled first, and relatively new buildings should be dismantled after the years have passed. Therefore, it is an economical and environmentally friendly extension method compared to the case where all buildings are demolished and removed at the same time.

According to the invention according to claim 2, a plurality of existing buildings arranged side by side are dismantled and removed in at least three times, so that it is suitably used when adding more than three existing buildings with different building ages. .

According to the invention which concerns on Claim 3 , it becomes an extension building which can show | play the effect of the invention which concerns on the said Claim 1 or 2 .

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a building extension method and a building constructed by this method according to the present invention will be described with reference to the drawings.
1 to 6 are schematic views showing a reference example (referred to as the first embodiment for convenience) of the extension method according to the present invention in the order of steps, the left view is a plan view and the right view is an elevation view. In addition, a top view is a top view seen from the height slightly higher than an existing building, and FIG. 6 represents the cross section in the same position.
FIG. 1 shows an existing building (1) before extension.
Although FIG. 1 shows a case where the existing building (1) is a three-story building, the number of floors of the existing building (1) is not particularly limited in the present invention. It may be four stories or more.

  In the method according to the present invention, first, an extension foundation is provided outside the foundation of the existing building (1), and the extension pillar (2) made of a steel column or the like is placed on the extension foundation (1). ) To stand around. At this time, it is made for the top part of the pillar (2) for extension to reach an upper position rather than the roof of the existing building (1).

  Next, the beam (3) is installed between the extension columns (2) above the existing building (1) (see FIG. 2), and the existing building (1) is constructed using these beams (3). An extension with a new living space above the existing building (1) by constructing the floor and roof of the extension floor above, and attaching the outer wall to the extension floor (4) and performing the necessary interior construction work, etc. The floor (4) is completed (see FIG. 3).

When the extension floor (4) having a new living space is completed, the residents of the existing building (1) are moved to the new living space of the additional floor (4) (see arrow in FIG. 3).
In the illustrated example, a state in which the extension floor (4) corresponding to the second floor is formed is shown, but the number of the extension floor (4) is not particularly limited in the present invention, and the extension is equivalent to one floor or more than the third floor. You may form a floor. However, it is preferable that a new living space having a number of rooms and a size that can accommodate at least all the residents of the existing building (1) is formed on the extension floor (4).

  After moving the resident of the existing building (1) to a new living space on the extension floor (4), the existing building (1) is dismantled (see FIG. 4). Thus, in this invention, after the new living space of the extension floor (4) is completed, the resident of the existing building (1) is moved to the completed extension floor, and the existing building (1). Since the building is to be demolished, it is not possible to continue living in the existing building (1) after the extension floor is completed.

After that, in the atrium space (6) created under the extension floor (4) due to the dismantling and removal of the existing building (1), the beam (3) was installed on the extension pillar (2), and the floor was built on it. (See FIG. 5).
Furthermore, by installing a new outer wall around the extension pillar (2) so as to be continuous with the outer wall of the above-described extension floor, which has already been completed, A new living space (living room) (5) is formed below 4) as a lower floor (see FIG. 6).
A new resident can be put in the new living space below the extension floor (4) formed in this way.

  According to the extension method described above, a new living space (additional floor) is formed above the existing building without the existing building being dismantled, so the residents of the existing building are located above the same site. It is possible to move to a new living space only by moving, and then the existing building is dismantled and a new living space (lower floor) is formed in the resulting atrium space, so that the extension building with excellent earthquake resistance as a whole Things are obtained.

  In the present invention, in the method described above, after the existing building (1) is dismantled and the atrium space (6) is formed below the extension floor (4), a new extension is added below the extension floor (4). A foundation can be installed, a new pillar can be erected on the extension foundation, and the beam (3) and the floor can be constructed using this new pillar.

As shown in FIG. 7, for example, the new pillar (7) is erected in an inner region of the extension pillar (2) that is erected around the existing building (1). FIG. 7 corresponds to the process of FIG.
This new column (7) is connected at its upper end to the lower end of a column provided to connect the beam (3) in the vertical direction in the inner region of the extension column (2).
Specifically, when the extension floor (4) is formed, a column that connects the beam (3) in the vertical direction is provided in the inner region of the extension column (2), and the lower end of the column is placed at the bottom of the column. It protrudes slightly below the beam, and the upper end of a new column (7) is connected to this lower end.

Thus, by providing the new pillar (7) below the extension floor (4) (inside the extension pillar), the strength of the entire building obtained by the extension can be greatly increased, especially the floor area. It is very effective when expanding existing large buildings.
The structure provided with the new pillar (7) as described above can also be adopted in the following second embodiment.

8 to 15 are schematic views showing an example of an extension method according to the present invention (referred to as a second embodiment for the sake of convenience) in the order of steps, wherein the left figure is a plan view and the right figure is an elevational view. In addition, a top view is the top view seen from the height slightly upper than the existing building. 13 to 15 show only elevation views.
FIG. 8 shows an existing building (1) before extension.
In the method of the second embodiment, the existing building (1) is composed of a plurality of buildings arranged side by side in the vicinity.
In the illustrated example, the case where there are three existing buildings (1) is shown, but in this second embodiment, the number of existing buildings may be two or more, or four or more.
Moreover, the number of floors of each existing building (1) may be the same, only a part may be different, or all may be a different number of floors.

  In the method according to the second embodiment, first, an extension foundation is provided outside the foundation of all existing buildings (1), and the extension pillar (2) made of a steel column or the like is provided on the extension foundation. Stand up to surround the whole of the existing buildings and the surroundings of each existing building. At this time, it is made for the top part of the pillar (2) for extension to reach an upper position rather than the roof of all the existing buildings (1).

  Next, beams (3) are installed between extension columns (2) above each existing building (1) (see FIG. 9), and existing buildings (1) using these beams (3). By constructing the floor and roof of the extension floor above the building, and installing the outer wall on the extension floor (4) and performing the necessary interior work, etc., new residences straddling the top of all existing buildings (1) The extension floor (4) having a space is completed (see FIG. 10).

When the extension floor (4) having a new living space is completed, the residents of the existing building (1) are moved to the new living space of the additional floor (4) (see arrow in FIG. 10).
At this time, among the plurality of existing buildings (1), the residents of all the existing buildings may be moved to a new living space, or only the residents of some of the existing buildings are newly relocated. You may move to space. FIG. 10 shows a state in which only the residents of the two existing buildings among the three existing buildings are moved to the new living space on the extension floor (4).

The existing building where the residents were moved after moving the residents of all or some of the existing buildings (1) to the new living space on the extension floor (4) Only dismantle and remove (1) (see FIG. 11).
In the example shown in the figure, only the residents of the two existing buildings moved out of the three existing buildings (1), so the two existing buildings were demolished and the remaining one existing building. Things remain without being dismantled.

After that, in the atrium space (6) created under the extension floor (4) due to the dismantling and removal of the existing building (1), the beam (3) was installed on the extension pillar (2), and the floor was built on it. To do.
In the example shown in the figure, two of the three buildings have been demolished and removed, so in the atrium (6) for these two buildings, the beam (3) is installed on the extension pillar (2) and the floor However, if only one building is dismantled and removed, the same work is performed in the atrium space for one building, and if all existing buildings are dismantled and removed, it occurs in the entire area below the extension floor. The same work is performed in the open space.

In the atrium space (6) created by the dismantling and removal of the existing building, the beam (3) was installed on the extension pillar (2) and the floor was built on it. New living space as a lower floor below the extension floor (4) by installing a new outer wall around the extension pillar (2) so as to be continuous with the outer wall, and performing necessary interior construction work, etc. (Living room) (5) is formed (see FIG. 13).
A new resident can be put in the new living space below the extension floor (4) formed in this way.

In the previous process, when all of the plurality of existing buildings have been demolished and removed, the construction of the extension is completed at this point.
Such a method of dismantling and removing all the existing buildings at once and forming a new living space (lower floor) with the entire lower part of the extension floor as an aerial space is old in all of the existing buildings It is preferably employed in some cases.

On the other hand, as shown in the example, when only some of the existing buildings are dismantled and removed in the previous process, a new living space is formed only in a part below the extension floor (4). The existing building (1) that has not been demolished and removed still remains.
Such a method of dismantling and removing only a part of a plurality of existing buildings is preferably adopted when there are new and old buildings in a plurality of existing buildings. Only dismantle and remove the old existing building first, and leave the new existing building for a while to continue using it.

  As shown in FIG. 13, a new living space (5) as a lower floor is formed only in a part below the extension floor (4), and the existing building (1) that has not been dismantled still remains. If it is in a state, a new resident will move into the new living space, and the existing resident can continue to live in the remaining existing buildings. When an existing building (hereinafter referred to as a “remaining building”) becomes old, the following steps are performed.

First, the residents of the remaining buildings are moved to the living space already formed on the extension floor (4) (see arrow in FIG. 13).
The remaining building after the resident moved is dismantled and removed (see FIG. 14), and the beam (3) is added to the extension pillar (2) in the atrium (6) below the extension floor generated by the dismantling and removal. After constructing the floor and constructing the floor, by installing a new outer wall around the extension pillar (2) so as to be continuous with the already completed outer wall vertically and horizontally, by performing necessary interior construction etc. A new living space (living room) (5) as a lower floor is further formed below the extension floor (4) (see FIG. 15).
This completes the extension work.

  In addition, the method of 2nd embodiment demonstrated above divides a some existing building into two groups, and about the 1st group, a new residence in the space after a resident's movement, demolition removal, and demolition removal first. The extension is completed by performing a series of steps to form a space, followed by a series of steps to move the residents, dismantle, and create a new living space in the space after dismantling. However, in the present invention, the extension may be completed by dividing a plurality of existing buildings into three or more groups and performing the same construction (that is, repeating a series of steps three or more times). .

  The type of the existing building (1) to which the present invention is applied is generally a housing such as an apartment house or a detached house, but is not necessarily limited to a house, such as an office building, a school or a government office. Other types of buildings such as public facilities or convenience stores, supermarkets, department stores, and the like may be used.

  In addition, the shape of the roof of the existing building (1) is not particularly limited, and is a land roof, a dormitory roof, a square roof, a six-column roof, an eight-column roof, an M-shaped roof, a Y-shaped roof, a saw roof, a crossing roof, and a gable. Roof, beckoning roof, single-flow roof, beckoning roof, cross-ridge roof, overpass roof, hip-fold roof, half-gable roof, entrance roof roof, roller roof, mansard roof, corner-cut roof, warped roof, dome roof, vault, The roof may be any known shape such as a butterfly.

  Furthermore, in the present invention, the roof of the existing building (1) may be removed or left without being removed. When the roof is left, it is preferable to remove only the skin members such as tiles, slate, and waterproof layer in order to reduce the weight burden, but it is not always necessary to remove it.

  The present invention is an extension method in which a resident does not need to move to another place, and is particularly suitably used when an existing building is aged.

It is the schematic showing the state before construction of the reference example of the extension method concerning the present invention. It is the schematic showing the 1st process of the reference example of the extension method which concerns on this invention. It is the schematic showing the 2nd process of the reference example of the extension method which concerns on this invention. It is the schematic showing the 3rd process of the reference example of the extension method which concerns on this invention. It is the schematic showing the 4th process of the reference example of the extension method which concerns on this invention. It is the schematic showing the construction completion state of the reference example of the extension method which concerns on this invention. It is a figure showing the example of a change of the 3rd process of the reference example of the extension method which concerns on this invention. It is the schematic showing the state before construction of the Example of the extension method concerning this invention. It is the schematic showing the 1st process of the Example of the extension method which concerns on this invention. It is the schematic showing the 2nd process of the Example of the extension method which concerns on this invention. It is the schematic showing the 3rd process of the Example of the extension method which concerns on this invention. It is the schematic showing the 4th process of the Example of the extension method which concerns on this invention. It is the schematic showing the 5th process of the Example of the extension method which concerns on this invention. It is the schematic showing the 6th process of the Example of the extension method which concerns on this invention. It is the schematic showing the construction completion state of the Example of the extension method which concerns on this invention.

Explanation of symbols

1 Existing Building 2 Extension Pillar 3 Beam 4 Extension Floor 5 New Living Space on Lower Floor 6 Space Created by Demolition and Removal of Existing Building (Blown-Out Space Generated Below Extension Floor)
7 New pillars

Claims (3)

An extension pillar is erected around the existing building, and an extension floor having a new living space is formed above it while maintaining the existing building using the extension pillar. The person is moved to the new living space, and then the existing building is dismantled and then a floor is constructed by building a beam on the extension pillar in the space generated by the dismantling and removing the outer wall. A method for extending a building to form a new living space below the additional floor, wherein the existing building is composed of a plurality of buildings arranged side by side, and the extension pillar is used as a whole for the plurality of existing buildings. erected so as to surround the periphery of the build-floor and forming over the entire plurality of existing buildings, the build-floor only resident part of the building of the plurality of existing buildings After moving to a new living space, the part of the building After dismantling and then laying a beam on the extension pillar in the space created by the dismantling and building a floor on it, it was extended to be continuous with the outer wall of the already completed extension floor A first stage of forming a new living space as a lower floor below the extension floor by providing a new outer wall around the pillar and performing interior work, and among the plurality of existing buildings The remaining building residents are moved to a new living space on the extension floor, and then the remaining building is dismantled and a beam is installed on the extension pillar in the space generated by the dismantling and removal. After the floor is constructed, a new outer wall is provided around the extension pillar so that it is continuous with the already completed outer wall, and interior construction is performed, so that the lower floor can be further updated below the extension floor. complete one of the build-product to form a new living space to be Build-method of a building, characterized in that it comprises a second stage causes.   The building extension method according to claim 1, wherein the first stage is repeated a plurality of times.   3. A building constructed by the method according to claim 1 or 2.

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