JP2011241569A - Method of reconstructing building and building reconstructed by method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of reconstructing a building that can minimize the effect on the living environment of residents living in an existing house.SOLUTION: A method of reconstructing a stairs room type apartment house having a staircase 11 installed between two adjacent dwelling units on each floor comprises the step of newly constructing an elevator 40 that is vertically movable and can stop at a height nearly equal to the height of an existing landing 15 installed in the staircase 11.

Description

  The present invention relates to a method for reconstructing a building and a building reconstructed by the method. In particular, it is suitable for use in renovating a building related to a staircase-type apartment house that shares one staircase between two adjacent houses on each floor.

  Conventionally, in Japan, many staircase-type apartments have been built in which two adjacent houses on each floor share one staircase. In such a staircase type apartment house, many elderly people live together with aging. Many of the staircase type apartment houses are not equipped with elevators, and it is very inconvenient for not only elderly people but also residents to go up and down the stairs. On the other hand, although there is a movement to rebuild or expand and renovate the staircase type apartment, it is not progressing at a slow pace due to the economic burden of residents and the need for temporary occupancy during construction.

  For example, according to the extension method of the staircase type apartment house described in Patent Document 1, an extension foundation is provided outside the existing foundation, a support member is erected on the extension foundation, An extension roof positioned above the existing roof of the staircase type apartment house is provided on the top of the support member, and a floor member supported by a middle part of the support member is provided above the existing roof, and the floor member A method of forming a new living space with an extension roof is disclosed. Furthermore, Patent Document 1 discloses an extension method in which a corridor that connects all the dwelling units facing each adjacent dwelling unit is provided, and an elevator and a staircase are installed at a position facing the corridor.

JP 2004-124558 A

  However, in the method for expanding a staircase type apartment house disclosed in Patent Document 1, a corridor and a staircase are newly installed after demolishing an existing staircase. Therefore, there is a problem that a cost for removing the stairs and a cost for newly installing a corridor and a stairs are generated, and the renovation period is prolonged.

  In addition, since the existing stairs are completely demolished, the residents of the existing house cannot use the stairs and cannot go out during the reconstruction. Therefore, during the period of renovation, residents of existing houses are forced to move temporarily to different houses. In patent document 1, after moving the resident of the existing house to the newly established upper layer residence, it is repeatedly reconstructing the living space of the existing house, and the resident is newly moved into the lower level existing house. Renovation is performed by the method.

  It takes time and money for the residents of the existing house to move temporarily, and an excessive burden is imposed. Moreover, in the moving method of the resident described in Patent Document 1, after renovation, the resident of the existing house must live in a different residence from the one that he / she used to live for many years, and there is resistance to the resident. In addition, new residents have to move into the existing lower-layer housing, and even if they are being renovated, there is resistance, resulting in problems such as a small number of residents who want to purchase and not being able to sell them at a high price. .

  The present invention has been made in view of the above-described problems. In renovating an existing building, it is not necessary to demolish an existing staircase. Provided is a method for rebuilding a building that does not require moving to a different house and can minimize the impact on the living environment for residents of existing houses.

  The present invention is a method of remodeling a building for renovating a staircase type apartment house with a staircase installed between two adjacent houses on each floor, which is substantially the same height as an existing landing site installed on the staircase. It has the process of newly installing the elevator which can be moved up and down in the perpendicular direction.

  According to the present invention, it is not necessary to demolish existing stairs, and it is possible to easily renovate an existing building by not requiring a resident of an existing house to move to a different house during the renovation period. It is possible to minimize the impact on the living environment for residents of existing houses.

It is a top view of the existing building. It is the top view which expanded a part of existing building. It is sectional drawing which looked at the II line | wire shown in FIG. 2 from the arrow direction. It is sectional drawing which shows the change of a renovation state. It is sectional drawing which shows the change of a renovation state. It is sectional drawing which looked at the II-II line | wire shown in FIG. 2 from the arrow direction. It is sectional drawing which shows the change of a renovation state. It is sectional drawing which shows the change of a renovation state. It is a top view which shows the change of the renovation state of the existing house. It is a top view which shows the change of the renovation state of the existing house. It is a top view of a newly built house. It is a top view of the building after renovation.

Hereinafter, the building remodeling method according to the present embodiment will be described with reference to the accompanying drawings. FIG. 1 is a plan view of an existing building that is an object of reconstruction. In each figure, for ease of explanation, one side of the building is indicated as front side Fr, the other side is indicated as rear side Rr, the right side is indicated as R, and the left side is indicated as L.
The existing building 1 according to the present embodiment is, for example, a five-story reinforced concrete structure, and as shown in FIG. 1, six existing houses 10a to 10f are arranged in a straight line along the left-right direction on each floor. ing. Each floor area of the existing houses 10a to 10f is, for example, about 45 m ² .
There is no elevator installed in the existing building 1, and the resident moves up and down the stairs 11 installed between two adjacent houses on each floor. Thus, the building provided with the stairs 11 installed between two adjacent houses on each floor is called a staircase type apartment house. The stairs 11 are the rear side of the existing building 1, and are respectively installed between the existing houses 10a and 10b, between the existing houses 10c and 10d, and between the existing houses 10e and 10f.

FIG. 2 is an enlarged plan view of the existing houses 10a and 10b, which are part of the existing building shown in FIG. 3A is a cross-sectional view of the II line shown in FIG. 2 as viewed from the direction of the arrow. 4A is a cross-sectional view of the II-II line shown in FIG. 2 as viewed from the direction of the arrow.
As shown in FIG. 2, in the existing houses 10 a and 10 b, a living space 12 in which a resident lives, a veranda 13 projecting forward from the living space 12, an entrance 14 that is an entrance of the living space 12, etc. are installed. Yes. The entrance 14 of the existing house 10a and the entrance 14 of the existing house 10a are opposed to each other and communicate with the common stairs 11 respectively. The stairs 11 are installed at a position sandwiched between the living spaces 12 on the rear side of the adjacent existing houses 10a and 10b. On the rear side of the stairs 11, a landing 15 for changing the direction of the stairs 11 is formed. As shown in FIG. 3A, the landing 15 is located between the upper and lower floors and is formed so as to protrude from the stairs 11 to the rear side. In addition, a partition 16 is erected on the periphery of the landing 15 so that the resident does not fall from the landing 15.

  Next, the reconstruction method of the existing building 1 is demonstrated with reference to FIG. 3A-FIG. 3C, FIG. 4A-FIG. 4C, and FIG. 3B and 3C are diagrams showing changes in the remodeled state in a cross-sectional view of the II line shown in FIG. 2 as viewed from the direction of the arrows. 4B and 4C are diagrams showing changes in the remodeled state in a cross-sectional view taken along the line II-II shown in FIG. 2 from the arrow direction. 5 and 6 are plan views showing changes in the remodeled state of the existing house. FIG. 7 is a plan view of the newly built house.

Below, the existing house of each floor which is the existing building 1 is expanded, and a new house is newly built on the 6th floor and the 7th floor. In addition, a new elevator will be installed to move up and down from the first floor to the newly built seventh floor.
First, the partition wall 16 surrounding the landing 15 is demolished and removed. At this time, even during the period of renovation, the stairs 11 and the landing 15 itself are left without being demolished so that residents of the existing house 10 can ascend and descend the upper and lower floors.

  Next, foundation portions 20 and 21 are provided on the ground on both sides (front side and rear side), which are outside the existing building 1 and are orthogonal to the direction in which the plurality of existing houses 10 are adjacent. Specifically, as shown in FIG. 3B and FIG. 4B, the foundation part 20 is provided on the ground on the front side of the existing building 1 and the foundation part 21 is provided on the ground on the rear side. The base parts 20 and 21 are provided over the direction (left-right direction) where the existing house 10 is adjacent, respectively. It should be noted that this step can be omitted when the foundation is already provided.

  Next, support members are erected on both sides (front side and rear side) which are outside the existing building 1 and are orthogonal to the direction in which the plurality of existing houses 10 are adjacent. Specifically, as shown in FIGS. 4B and 5, a plurality of inner support members 24 are erected on the base portion 20 on the front side and close to the existing building 1. A plurality of outer support members 25 are erected at positions spaced apart from each other by a predetermined distance from each other. At this time, as shown in FIG. 5, it is preferable that the inner support member 24 and the outer support member 25 are erected on the boundaries of the existing houses 10a and 10b and the ends of the existing houses 10a and 10b. As the support member, for example, an H-shaped steel or a square steel pipe can be used.

Similarly, a plurality of inner support members 26 are erected at positions close to the existing building 1 on the rear base portion 21 and are spaced apart from each inner support member 26 by a predetermined distance. A plurality of outer support members 27 are erected. At this time, as shown in FIG. 5, the inner support member 26 and the outer support member 27 stand on the boundary between the existing house 10a and the stairs 11, the boundary between the existing house 10b and the stairs 11, and the ends of the existing houses 10a and 10b. It is preferable to install.
In the step of erecting the support member, the inner support members 24 and 26 and the outer support members 25 and 27 are erect up to a height of seven floors to be newly built. The process of suspending the floor member described later after the inner support members 24 and 26 and the outer support members 25 and 27 corresponding to the first floor are erected may be repeated up to the height of the newly built seven floors. .

  Next, the landing on each floor is expanded toward the rear side at the same height or substantially the same height as the existing landing 15. Specifically, as shown in FIG. 3B and FIG. 6, an expanded landing 31 is formed by suspending a floor member 28 horizontally between the existing landing 15 on each floor and the outer support member 27. . The existing landing 15 and the expanded landing 31 are connected by an expansion joint such as an expansion joint.

Moreover, the existing houses 10a and 10b on each floor are expanded toward the front side and the rear side. Specifically, as shown in FIG. 3B, FIG. 4B, and FIG. 6, on the front side of the existing house 10, an inner support member 24 and an outer support member 25 corresponding to the height of the existing house 10 on each floor are provided. The existing members 10a and 10b are expanded by suspending the floor member 29 therebetween. Further, on the rear side of the existing house 10, the existing houses 10 a and 10 b are increased by suspending the floor member 30 between the inner support member 26 and the outer support member 27 corresponding to the existing house 10 on each floor. To floor. In the present embodiment, the floor area is about 90 m ² due to the extension, and the floor area is increased to about twice that of the existing house 10. The suspended floor members 29, 30 and the existing houses 10a, 10b are connected by expansion joints such as expansion joints.

  In the embodiment shown in FIG. 3B and FIG. 4B, the height of the floor member 29 and the floor member 30 is different from the height of the existing house 10 on each floor, but this is from the ground to the newly constructed 6th floor floor member. This is because the floor members 29 and 30 are arranged at the positions obtained by dividing the height of the floor into five equal parts. Therefore, by suspending at approximately the same height as the existing houses 10a and 10b on each floor, it is possible to easily make the height between the floor members 29 and 30 and the existing houses 10a and 10b the same. is there.

As shown in FIG. 6, in a space adjacent to the expanded landing 31, a space 32 for newly installing an elevator 40, which will be described later, an atrium 33, and a pipe space 34 are arranged. Therefore, the floor member 30 is not suspended on all the surfaces of each floor, but is disposed excluding the space 32 or the like described above in advance.
Further, if necessary, the outer walls of the existing houses 10a and 10b are opened so that a resident can come and go between the living spaces of the existing houses 10a and 10b and the enlarged living space. Further, a highly airtight and highly heat-insulated outer wall member is disposed between the front and rear adjacent support members 24 to 27 to define an increased living space.

Next, as shown in FIG. 4B, it is approximately the same height as the 6th and 7th floors to be newly constructed, and is located between the front inner support member 24 and the outer support member 25 and the rear inner support member 26 and the outer support member. 27, the floor member 35 and the roof member 36 are suspended horizontally. By suspending the floor member 35, a part of the living space corresponding to a newly built house is formed.
As shown in FIG. 7, on the 6th and 7th floors to be newly constructed, a space for a stair, which will be described later, a space 32 for newly installing an elevator 40, an atrium 33, and a pipe space 34 are disposed. Therefore, the floor member 35 is not suspended on all the surfaces of the sixth floor and the seventh floor, but is disposed excluding the space 32 and the like described above in advance.
Moreover, like the existing house 10, a highly airtight and highly heat-insulated outer wall member is disposed between the support members 24 to 27 to define a part of the newly built living space.

  Next, as shown in FIG. 4C, the floor member 37 and the highly airtight / highly airtight / highly-sealed air gap between the front inner support member 24 and the rear inner support member 26 are approximately the same height as the 6th and 7th floors to be newly constructed. A highly insulated roof member 38 is suspended horizontally. The floor member 37 is connected to the front and rear floor members 35 suspended at substantially the same height as the above-described newly constructed 6th and 7th floors, thereby occupying newly constructed 6th and 7th floor new houses. Create a space. At this time, the newly built house is located above without touching the roof of the existing building 1. Specifically, the floor member 37 on the sixth floor is supported by the inner support member 24 and the inner support member 26, and the floor member 37 on the sixth floor is separated from the roof of the existing building 1. That is, since the gate-shaped overbridge frame is formed with respect to the existing building 1 by the increased floor portion and the newly built portion of the existing house 10, the vertical load of the newly built portion is applied to the existing building 1. There is no.

Next, as shown in FIG. 3C, an elevator 40 that can vertically move from the first floor of the existing house 10 to the seventh floor of the newly built house is installed adjacent to the expanded landing 31. That is, as shown in FIG. 6, the elevator 40 and the expanded landing 31 are located between the newly suspended floor members 30 of the adjacent existing houses 10a and 10b.
The elevator 40 stops at approximately the same height as the expanded landing 31 from the first floor to the fifth floor, and stops at the same floor on the sixth and seventh floors of the newly built house. Therefore, facing the landing 31, an opening / closing door 41 for a resident to get on and off the elevator 40 is installed.
In the present embodiment, the elevator 40 stops at the landing 31 between the second and third floors and the landing 31 between the fourth and fifth floors of the expanded landing 31. That is, the elevator 40 stops at the landing 31 between the nth floor (n is an even number) and the (n + 1) th floor.

Also, as shown in FIG. 6, pipe spaces 34 are formed on both sides (left side and right side) of the existing landing 15 along the vertical direction from the first floor of the existing house 10 to the seventh floor of the newly built house. In the pipe space 34, a water pipe, a drain pipe, a gas pipe and the like (not shown) are arranged. In addition, a blow-off 33 is formed between the pipe space 34 and the floor member 30 newly suspended on the rear side, for example, for ventilation of a bathroom.
Finally, as shown in FIG. 3C, a new stairway 42 from the top floor of the existing house to the 6th floor of the newly built house and a staircase 42 from the 6th floor to the 7th floor of the newly built house are newly established. To do.

  FIG. 8 is a plan view of the building 2 whose reconstruction has been completed. By performing the above-described remodeling process in all the existing houses 10a to 10f, as shown in FIG. 8, the existing house 10 is expanded and the elevator 40 is newly established, so the residents of the existing houses 10a to 10f Improved convenience.

  As described above, the existing houses 10a to 10f are surrounded by the highly airtight and highly heat-insulated outer wall member and the roof member from the front and rear and the upper three directions, so that the building 2 has a high heat insulating effect and the overall energy consumption. Can be suppressed. In addition, since the renovation is performed so as to cover the existing building 1 from the front, rear, and upper three directions, the outer wall of the existing building 1 that has been neutralized and weathered by the outside air may be converted into an inner wall. Since it is possible, durability can be made constant. In addition, the appearance can be updated to an excellent design. Furthermore, since the extension part is independent of the existing building 1 in the structural calculation, it is possible to construct the building by applying for the building confirmation of only the extension part.

Further, as described above, since the extended floor members 29 and 30 and the existing house 10 are connected by the expansion joint, the extension portion bears the horizontal force of the existing house 10, so Structural safety can be improved.
Moreover, the elevator 40 newly established can use the elevator unified in all the existing houses 10. FIG. Accordingly, the elevator 40 can be mass-produced, the installation and management efficiency can be improved, and the maintenance cost can be reduced.
Moreover, according to the remodeling method of this embodiment, compared with the scrap & build which destroys all the existing buildings 1 performed conventionally and rebuilds them newly, it can contribute largely to reduction of CO2.

Next, a description will be given of a method in which the resident moves the existing building 1 in accordance with the renovation.
As described above, in the existing building 1, only the veranda 13 and the partition wall 16 of the landing 15 are demolished. That is, since the living space itself of the existing house 10 is not demolished, the resident does not have to move even during the renovation period and can live in the existing living space 12 as it is. In particular, in order not to demolish the existing staircase 11, it is possible to ascend and descend from the 1st floor to the 5th floor using the staircase 11 as before even during reconstruction. In addition, when it is desired to renovate the living space 12 of the existing house 10, it is only necessary to renovate after moving the furniture etc. in the existing house 10 to the expanded living space. No need to move.
Thus, according to the remodeling method of the present embodiment, the resident of the existing house can continue the life as before, so that the influence on the living environment can be minimized.

Next, the operation method of renovation will be described.
Similarly, when the existing building 1 is for sale or lease, the newly constructed 5th and 6th floor new houses can be sold by the above-described renovation method, and the gain on the sale can be allocated to the renovation cost. By operating in this way, the economic burden on the residents of the existing house 10 can be eliminated or reduced. In addition, the newly built two-story houses to be sold can be expected to have many purchasers due to the well-organized living environment, the view, and the space between adjacent buildings.

  As described above, according to the remodeling method of the present embodiment, it is not necessary to demolish the existing staircase 11, and it is not necessary to move to a different living space during the remodeling. Can be renovated. Moreover, the asset value of the existing building 1 can be improved, the desire to improve the existing residents, and the economic ripple effect of the surrounding area can be expected, and the area can be activated. it can.

As mentioned above, although this invention was demonstrated with various embodiment, this invention is not limited only to these embodiment, A change etc. are possible within the scope of the present invention.
For example, although this embodiment demonstrated the case where the existing building 1 of 5 stories was renovated, it is not restricted to this case, It can apply also to existing buildings other than 5 stories. Moreover, although the case where two floors of the 6th floor and the 7th floor are newly constructed houses has been described, the present invention is not limited to this case, and one floor or 2 floors or more can be newly constructed houses.

Further, in this embodiment, the case where the extension part and the new construction part are remodeled by a so-called steel-framed ramen structure using H-shaped steel, a rectangular steel pipe or the like has been described. However, the present invention is not limited to this case. May be.
Moreover, although this embodiment demonstrated the case where the existing landing 15 was expanded and the elevator 40 was newly installed so that it might adjoin the expanded landing 31, it is not restricted to this case. For example, the elevator 40 may be newly installed so as to be adjacent to the existing landing 15 without expanding the existing landing 15.

Moreover, although embodiment mentioned above demonstrated the case where the elevator 40 stops in the landing 31 between the n-th floor (n: even number) and the (n + 1) floor, it is not restricted to this case, All the upper and lower floors You may make it stop at the landing 31 in between. However, the stop floor can be reduced by stopping at the landing 31 between the nth floor (n: even number) and the (n + 1) th floor, and the installation cost and maintenance cost of the elevator 40 can be reduced. Can do.
In the above-described embodiment, the case where the pipe space 34 and the blow-through 33 are arranged has been described. However, the present invention is not limited to this case, and the pipe space 34 and the blow-through 33 can be omitted. In this case, the living space can be further increased.
In addition, the order of the reconstruction is not limited to the order of the above-described embodiment, but before and after the process may be interchanged, and each process may proceed simultaneously.

  1: Existing buildings 10a to 10f: Existing houses 11: Stairs 15: Existing landings 20, 21: Base parts 23: Support members 24, 26: Inner support members 25, 27: Outer support members 28, 29, 30, 35, 37: Floor member 31: Expanded landing 33: Atrium 34: Pipe space 36, 38: Roof member 40: Elevator

Claims (9)

A method for renovating a building to renovate a staircase type apartment house with a staircase installed between two adjacent houses on each floor,
A method for renovating a building, comprising a step of newly installing an elevator that can be moved up and down in a vertical direction and stops at substantially the same height as an existing landing on the stairs. Further comprising the step of expanding the landing to approximately the same height as the existing landing located on the stairs;
The method for renovating a building according to claim 1, wherein, in the step of newly installing the elevator, the elevator is newly installed adjacent to the expanded landing. A step of standing a plurality of support members on both sides of a direction perpendicular to a direction in which the two houses on each floor are adjacent to each other outside the existing staircase type apartment house;
Disposing floor members supported by the support member on both sides of the existing two houses on each floor;
The building remodeling method according to claim 1, further comprising:   The newly installed elevator and the expanded landing are located between the floor members of the two adjacent houses arranged in the step of arranging the floor member. 3. Reconstruction method of the building according to 3.   The method further includes the step of suspending a floor member between the support members on both sides that are erected in the step of erecting the plurality of support members above the existing staircase type apartment house to newly establish a new house. The method for reconstructing a building according to claim 4.   6. The method for renovating a building according to claim 5, wherein, in the step of newly installing the elevator, the elevator is stopped at substantially the same height as the newly installed new house.   The method for renovating a building according to claim 5 or 6, wherein a new stairway from the uppermost floor of the existing staircase type apartment house to the newly established new house is established.   The building according to any one of claims 2 to 7, further comprising a step of forming a pipe space along a vertical direction adjacent to at least one of the existing landing and the expanded landing. How to renovate things. It is a renovated building of a staircase type apartment house with a staircase installed between two adjacent houses on each floor,
The building which newly installed the elevator which can be raised / lowered in the perpendicular direction which stops at the substantially same height as the existing landing place installed in the said stairs.

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