JPH09317031A - Extension method of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension method with a short execution term and a simple execution work. SOLUTION: An unit 22A for extension providing a framework 40 including four columns 41, an upper beam and a lower beam 43 is formed in advance and after providing a base on a site for extension adjacent to an unit type building at a construction spot and arranging the unit 22A for extension on this case, the unit 22A for extension is connected to a building unit 12A through an expansion joint 30. Thereby, in addition to that the assembly work of the framework 40 can be omitted and the simplification of the execution work and the shortening of execution term can be achieved, the relative displacement in a horizontal direction is absorbed by the expansion joint 30 at the earthquake time. Therefore, the unit 22A for extension and the unit type building have no effect on dynamic harm mutually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building extension method.

[0002]

[Background Art] Buildings such as houses may be remodeled due to deterioration and changes in family structure. For example, in the case of expanding the building body horizontally, as in the case of new construction, a foundation is set up on the site for the extension adjacent to the building body, and pillars and beams are assembled on this foundation to connect with the building body. The skeleton was formed, and floor materials and wall materials were attached to this skeleton.

[0003]

However, in such an extension method, all the work such as assembling the frame has to be performed at the construction site, and the work at the site is complicated and a long construction period is required. In addition, if the extension part is added independently of the building body, in the event of an earthquake, the extension part and the building body will sway individually and horizontal relative displacement will occur, resulting in mutual adverse effects such as frame deformation. May be given.
In order to prevent the occurrence of such relative displacement, it is necessary to join the skeleton of the extension part and the building main body at a number of places with high strength, and the joining work is troublesome.

An object of the present invention is to provide a building extension method capable of simplifying the construction work and shortening the construction period.

[0005]

The present invention will be described with reference to the drawings. It is a method for building a building to be built on an additional site adjacent to the building body 10. An upper beam 42 connecting the upper ends of 41 and the pillar 4
Extension units 22A, 22 provided with a box-shaped frame 40 that includes a lower beam 43 that connects the lower ends of 1
B is formed in advance, a foundation 21 is provided on the extension site, and the extension units 22A, 22 are provided on the foundation 21.
After arranging B, the extension units 22A and 22B are connected to the building body 10 through an expansion joint 30.

In the present invention, the extension unit 2 having the frame 40 including the pillar 41, the upper beam 42 and the lower beam 43.
Since 2A and 22B are formed in advance, the work of assembling the skeleton 40 or the like can be omitted at the construction site, and the construction work can be simplified and the construction period can be shortened. Further, since the extension units 22A and 22B and the building body 10 are joined via the expansion joint 30, they are joined in a physically separated state. Therefore, in the event of an earthquake, the extension units 22A, 22
The expansion joint 30 absorbs the relative displacement in the horizontal direction caused by the individual shaking of B and the building body 10, and the extension units 22A, 2
2B and the building body 10 do not exert a harmful effect on each other in terms of dynamics. Furthermore, the extension units 22A, 2
2B and the building body 10 do not have to be rigidly joined to each other with high strength over a number of places, and the joining work can be facilitated.
With these, the above object is achieved.

The building body 10 has four pillars 4
1. A plurality of building units 12 including a box-shaped frame 40 configured to include an upper beam 42 connecting upper ends of these columns 41 and a lower beam 43 connecting lower ends of the columns 41. It is a unit-type building 10 constructed in combination, and it is desirable that the frame 40 of the building unit 12 and the frame 40 of the extension units 22A and 22B be connected via the expansion joint 30.

In this way, the extension units 22A and 22B
And since the building unit 12 is provided with the skeleton 40 having the same structure, the skeleton 40 of the building unit 12 can be diverted to easily form the extension units 22A and 22B. Further, since the respective frames 40 are connected to each other, the extension units 22A and 22B and the building unit 12 can be reliably connected.

Further, the extension units 22A, 22
It is desirable to connect the upper portions of B and the skeletons 40 of the building unit 12 to the lower portions of the skeletons 40 of the extension units 22A and 22B and the building unit 12 through the expansion joints 30.

In this way, the extension units 22A, 22
If the upper part and the lower part of the skeleton 40 of B and the building unit 12 are connected by the expansion joint 30, the horizontal relative displacement at the time of the earthquake is different between the extension units 22A and 22B and the upper part and the lower part of the building unit 12. Even in this case, the difference in the displacement is surely absorbed by each expansion joint 30.

Further, the expansion joint 30 includes a first support portion 31A, a second support portion 31B, a joint portion 32 provided between the first and second support portions 31A and 31B, and each of the support portions. Parts 31A and 31B
And the long hole 33 that makes the joint portion 32 orthogonal to each other.
A fastening tool 33 connected through A and 33B, and the first and second support portions 31A and 31B are previously provided on the facing surfaces of the frames 40 of the extension units 22A and 22B and the building unit 12 respectively. The extension units 22A and 22 are provided on the foundation 21 so as to face each other.
After arranging B, the first and second support portions 31A, 3
1B, the joint portion 32 is bridged, and the joint portion 32 and the support portions 31A and 31B are connected by the tightening tool 33, and the extension unit 22A,
It is desirable to connect 22B to the building unit 12.

As described above, if the first support portion 31A and the second support portion 31B are provided in advance in each of the frames 40 of the extension units 22A and 22B and the building unit 12, the joint portion 32 is provided to the first and the second portions. Two support parts 31
The extension unit 2 can be easily connected to A and 31B.
2A and 22B can be connected to the building unit 12.

The building body 10 has a planar shape with a concave portion 16, and the extension units 22A, 22 are provided.
B is previously formed in a shape that can be accommodated in the recess 16, the foundation 21 is provided on the extension site including the recess 16, and the extension units 22A, 22 are provided on the foundation 21.
After arranging B, the extension units 22A and 22B may be connected to the building body 10 via the expansion joint 30.

In this way, the extension units 22A and 22B
Is formed into a shape that fits in the recess 16 of the building body 10,
The extension units 22A and 22B do not project from the recessed portion 16, and the treatment of the joint portion between the extension units 22A and 22B and the building body 10 can be easily performed.
The aesthetics can be secured.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 shows a unit-type building 10 which is a building body of the present embodiment, and an extension portion 20 which is added to an extension site adjacent to the unit-type building 10. The unit-type building 10 includes a plurality of building units 12 arranged in combination on a foundation 11 and a roof portion 13 including a plurality of roof panels 14 provided on the building units 12. The building unit 12
The unit type building 10 is stacked in two layers and is arranged so that the planar shape of the unit-type building 10 is a rectangular shape.

The extension portion 20 is composed of building units 12A, 1
A foundation 21 provided on the extension site facing 2B, and two extension units 22A and 22B that are stacked on the foundation 21 with the building units 12A and 12B with a gap therebetween.
And a roof portion 23 including a roof panel 24 provided on the extension unit 22B.

As shown in FIG. 2, the extension unit 22A
Is connected to an adjacent building unit 12A via an expansion joint 30. The extension unit 22B is similarly connected to the adjacent building unit 12B via an expansion joint (not shown).

As shown in FIG. 3, the extension unit 22A and the building unit 12 include four columns 41, an upper beam 42 connecting upper ends of the columns 41, and a column 4.
The frame 40 has a rectangular parallelepiped shape and includes a lower beam 43 that connects the lower ends of the two. These pillars 41,
The upper beam 42 and the lower beam 43 are connected via a bracket 44. The skeleton (not shown) of the extension unit 22B has a structure similar to that of the extension unit 22A, but the pair of columns 41 are composed of short columns and the upper beam 42 is inclined.

As shown in FIG. 4, the extension unit 22A
Further, a curtain wall 45 such as an ALC plate that is an outer wall material is attached to a side surface of each skeleton 40 of the building unit 12A that faces the outside. In addition, extension unit 2
Curtain walls are similarly attached to the outdoor side of 2B and other building units 12. Various interior materials and exterior materials such as floor materials and ceiling materials, which are not shown, are attached to the skeletons 40 of the extension units 22A and 22B and the building unit 12, respectively.

The lower parts of the frames 40 of the extension unit 22A and the building unit 12A are connected to each other by the expansion joint 30 described above. The expansion joint 30 includes a first support portion 31A provided on the surface of the frame 40 of the extension unit 22A facing the building unit 12A, and the building unit 12A.
Second support portion 31B provided on the surface of the frame 40 facing the extension unit 22A, and the joint portion 32 provided between the first and second support portions 31A and 31B.
And a bolt 33, which is a fastening tool for connecting the support portions 31A and 31B and the joint portion 32, and a nut (not shown).

The first support portion 31A is the extension unit 22.
The second support portion 31B is composed of the support pieces 37 provided at the lower end portions of the pair of columns 41 on the side of the building unit 12A of A, respectively.
A support piece 37 is provided at the lower end of each of the pair of columns 41 on the extension unit 22A side of the building unit 12A so as to face the support piece 37 of the first support portion 31A. A rectangular frame-shaped joint portion 32 is provided on the first and second support portions 31A and 31B.

Each of the support pieces 37 of the first and second support portions 31A and 31B is provided with an elongated hole 33A at the intersection with the joint portion 32, and at the intersection of the joint portion 32 with each support piece 37. A long hole 33B orthogonal to the long hole 33A of the support piece 37 is provided. These long holes 33A, 33
A bolt 33 is inserted into B from the joint portion 32 side, and a nut (not shown) is screwed into the bolt 33 from the support piece 37 side to fasten the joint portion 32 and each support piece 37. A floor material (not shown) is installed on the expansion joint 30.

The upper parts of the skeletons 40 of the extension unit 22A and the building unit 12A are also connected to each other by an expansion joint 30 having a similar structure. The support piece 37 of the first support portion 31A of the expansion joint 30 is the pillar 41 of the extension unit 22A.
The support piece 37 of the second support portion 31B provided on the upper end of the
Is provided at the upper end of the pillar 41 of the building unit 12A. Under such an expansion joint 30, a ceiling surface material (not shown) is installed.

An outer wall material 34 for connection such as an ALC plate is attached to each joint portion 32 of the pair of expansion joints 30 via a joint member 35 fixed to the end portions thereof, and the extension unit 22A and the building unit are connected. 1
The gap with 2A is covered. Outer wall material for this connection 3
Reference numeral 4 denotes a curtain wall, and a joint portion with an adjacent curtain wall 45 is treated with a joint material 341 or the like.

The extension unit 22B and the building unit 12B are also connected by the expansion joint 30 in the same structure, and the same connection outer wall 34 is provided.

Returning to FIG. 1, a joint roof panel 36 is attached to the joint portion 32 joining the upper portions of the frames 40 of the extension unit 22B and the building unit 12B. The lower end of the roof panel 14 on the adjacent building unit 12B is superposed on the upper end of the connecting roof panel 36, and the lower end of the connecting roof panel 36 is
It is stacked on the upper end portion of the roof panel 24 on the adjacent extension unit 22B. Each joint between the connecting roof panel 36 and the roof panels 14 and 24 is rain-sealed.

In this embodiment thus constructed, the extension portion 20 is constructed by the following procedure. First, in a factory, four sets of expansion joints 30 are prepared, elongated holes 33A and 33B orthogonal to each other are formed in each support piece 37 and the joint portion 32, and the joint members 35 are fixed to both ends of the joint portion 32. Keep it.

Then, the four columns 41, the upper beam 42 and the lower beam 4
3 to form each skeleton 40 of the extension units 22A and 22B, and a curtain wall 45, various interior and exterior materials (not shown), and the like are attached to these skeletons 40 to form the extension units 22A and 22B in advance. I'll do it. At this time, the support pieces 37 are attached to the upper and lower end portions of each of the two pairs of columns 41 facing the building units 12A and 12B to form the first support portion 31A.

Next, at the construction site, the building unit 1
The side faces of the extension sites of 2A and 12B are opened to expose each skeleton 40, and the extension units 22A and 22B
The support pieces 37 are attached to the upper and lower ends of each pair of the columns 41 facing each other to form the second support portion 31B. In addition, a foundation 21 will be installed on the site for the extension. Then, the extension unit 22A and the building unit 12A are mounted on the foundation 21.
And the building unit 12B is arranged on the building unit 12A with a space between the building unit 12B and the building unit 12B.

After that, the joint portions 32 are bridged between the opposing first support portion 31A and second support portion 31B of the extension unit 22A and the building unit 12A, and the extension unit 22B and the building unit 12B, respectively. The long hole 3 at the intersection of the joint portion 32 and the support piece 37
The bolt 33 is inserted into 3A and 33B from the joint portion 32 side, and a nut (not shown) is screwed into the bolt 33 from the support piece 37 side to tighten the joint portion 32 and the support piece 37. Such joining work is performed at each intersection of the joint portion 32 and the support piece 37, and the first support portion 3
1A and the second support portion 31B and the joint portion 32 are connected to each other, and the extension unit 22A and the building unit 12 are connected.
A, the upper part and the lower part of each frame 40 of the extension unit 22B and the building unit 12B are connected to each other.

Subsequently, the connecting outer wall material 34 is attached to the joint member 35 fixed to each joint portion 32, and joint processing of the joint portion with the adjacent curtain wall 45 is performed. The lower parts of the frames 40 of the extension unit 22A and the building unit 12A are connected to each other, and the extension unit 22
B and the floor surface material (not shown) is installed on the expansion joint 30 that connects the lower parts of the frames 40 of the building unit 12B, and the ceiling surface material (not shown) is installed under the expansion joint 30 that connects the upper parts of the frames 40. Set up.

Then, a connecting roof panel 36 is mounted on the joint portion 32 connecting the upper beams 42 of the extension unit 22B and the building unit 12B, and rain sprinkling of the joint portion between the adjacent roof panels 14 and 24 is performed. I do.

According to this embodiment, the following effects can be obtained. That is, the extension unit 22 including the frame 40 including the pillar 41, the upper beam 42, and the lower beam 43.
Since A and 22B are formed in advance in the factory, the work of assembling the skeleton 40 and the assembling of the interior material can be omitted at the construction site, and the construction work can be simplified and the construction period can be shortened.

The extension unit 22A and the building unit 12A, and the extension unit 22B and the building unit 12B.
Are connected via the expansion joint 30, the unit type building 10 and the extension units 22A, 22
B and B will be joined in a state where they are physically separated. Therefore, the relative displacement in the horizontal direction caused by the individual shaking of the extension units 22A and 22B and the unit-type building 10 at the time of an earthquake is caused by the expansion joint 3.
0 will be absorbed by the extension unit 22
The A and 22B and the unit-type building 10 do not adversely affect each other mechanically. Furthermore, the extension unit 22A, the building unit 12A, and the extension unit 22B
Therefore, the building unit 12B does not need to be rigidly joined to a large number of places with high strength, and the joining work can be facilitated.

Since the extension unit 22A is provided with the frame 40 having the same structure as the building unit 12, the frame 40 of the building unit 12 is diverted and the extension unit 2 is used.
2A can be easily formed. Furthermore, the extension unit 22
The skeleton of B can be easily formed only by making the pair of columns 41 of the skeleton 40 into short columns. And the extension unit 2
2A and the building unit 12A, and the extension unit 22B and the building unit 12B connect the skeletons 40, so that they can be reliably connected.

Further, the upper and lower parts of each frame 40 of the extension unit 22A and the building unit 12A,
Since the upper and lower parts of each skeleton 40 of the extension unit 22B and the building unit 12B are connected by the expansion joints 30, respectively, the extension units 22A and 22B and the upper and lower parts of the building units 12A and 12B can be used when an earthquake occurs. Even if the relative displacement in the horizontal direction is different, the difference in the displacement is surely absorbed by each expansion joint 30.

In addition, the first support portion 31A is provided in advance in each skeleton 40 of the extension units 22A and 22B at the factory, and the second support portion 31B is installed before the extension units 22A and 22B are installed on the foundation 21. Building units 12A, 12
Since it is provided in each skeleton 40 of B, at the construction site, simply by connecting the joint part 32 to these first and second support parts 31A and 31B, the extension units 22A and 22B can be easily installed. , 12B can be connected.

Further, since the connecting outer wall member 34 is attached to the joint portion 32, the expansion joint 3 is used.
0 can be reliably covered.

[Second Embodiment] Since the unit-type building 10 and the additional portion 20 of this embodiment have substantially the same structure as that of the first embodiment, the same parts are designated by the same reference numerals for details. The description is omitted, and only different parts will be described in detail below. FIG. 5 shows the unit-type building 10 according to the present embodiment.
And an extension 20 is shown.

The building unit 12 of the present embodiment is arranged in an L shape, and the building units 12C and 12D on the foundation 11 and the building units 12 laminated on these building units 12C and 12D respectively are used to enter the corners of the unit building 10. The part 15 is configured. As a result, the unitary building 10 has a planar shape in which a rectangular concave portion 16 is provided in one corner. Here, the planar shape provided with the concave portion 16 is a planar shape in which a part is cut out from a rectangular shape, and for example, a U-shaped planar shape in which the central portion of one side of the rectangle is cut out in a rectangular shape, A planar shape in which one corner is cut out at a right angle is included, and the concave portion 16 corresponds to the cutout portion.

The extension portion 20 includes a foundation 21 provided on the extension site including the recess 16 and facing the building units 12C and 12D, and the building unit 12C and the foundation 21 on the foundation 21.
The extension unit 22A and the roof portion 23 are provided on the extension unit 22A and the roof panel 24 provided on the extension unit 22A. FIG.
As also shown, the extension unit 22A is arranged so as to project from the recess 16 by the amount of the gap between the extension unit 22A and the building units 12C and 12D.

As shown in FIG. 7, the extension unit 22
A is connected to two adjacent building units 12C and 12D via expansion joints 30, respectively. Extension unit 22A and building unit 12C
An L-shaped outer wall member 34 for connection is attached to the outdoor end of the joint portion 32 disposed between and.
An L-shaped exterior corner wall material 51 that covers the exterior corner portion of the extension unit 22A is installed between the connection outer wall material 34 and the curtain wall 45 of the extension unit 22A. In addition, the extension unit 22A and the building unit 1
The same connecting outer wall member 34 and outer corner member outer wall member 51 are also provided between the 2D curtain walls 45. According to the present embodiment as described above, the same operation and effect as those of the first embodiment can be obtained.

The present invention is not limited to the above-described embodiment, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.
That is, in the second embodiment, the extension unit 22
Although A is arranged so as to project from the concave portion 16 of the unit-type building 10, as shown in FIGS. 8 and 9, the extension unit 22A may be formed into a shape that can be accommodated in the concave portion 16. The extension unit 22B having the same planar shape may be stacked on the building unit 22A and connected to the adjacent building units 12E and 12F through the expansion joint 30.

With such a shape, the extension unit 22A,
If 22B is formed, the extension units 22A and 22B do not project from the recessed portion 16, and the joint between the extension unit 22A and the building units 12C and 12D, and the extension unit 22B and the building units 12E and 12 are formed.
The outer wall material 51 for the projected corner at the joint portion with F can be omitted, and joint treatment and the like can be easily performed, and the aesthetic appearance can be secured.

Although the first and second support portions 31A and 31B of the expansion joint 30 are each composed of two support pieces 37, they may be composed of three or more support pieces 37. Further, in the first embodiment, the support piece 37 is provided at the upper and lower ends of the column 41, but may be provided at the upper beam 42 and the lower beam 43, for example, or in the middle of the column. It may be provided. Further, the joint portion 32 is not limited to the rectangular frame shape, and may be, for example, a planar shape. Then, the expansion joint 30 includes the first and second support portions 31.
The present invention is not limited to the one including A and 31B and the joint portion 32, and other existing expansion joints may be used.

[0046]

As described above, according to the present invention,
Since an extension unit with a frame including columns, upper beams and lower beams is formed in advance, it is possible to omit the frame assembly work at the construction site, simplifying the construction work and shortening the construction period. it can. Further, since the extension unit and the building main body are joined via the expansion joint, they are joined in a state where they are physically separated. Therefore, the expansion joint absorbs the horizontal relative displacement caused by the individual shaking of the extension unit and the main body of the building during an earthquake, and the extension unit and the main body of the building may adversely affect each other mechanically. It has no effect. Further, it is not necessary to rigidly join the extension unit and the building body to each other with high strength over a number of places, and the joining work can be facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a plan sectional view showing a unit-type building and an extension portion of the embodiment.

FIG. 3 is a perspective view showing a framework of the embodiment.

FIG. 4 is an enlarged cross-sectional view showing a portion surrounded by a circle IV in FIG.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is a plan sectional view showing a unit-type building and an extension portion of the embodiment.

FIG. 7 is an enlarged cross-sectional view showing a connecting portion between the building unit and the extension unit of the embodiment.

FIG. 8 is a perspective view showing a modified embodiment of the present invention.

FIG. 9 is a plan sectional view showing a unit-type building and an extension portion of the modified embodiment.

[Explanation of symbols]

 10 Unit type building which is the building body 12 Building unit 21 Foundation 22A, 22B Extension unit 30 Expansion joint 31A First support part 31B Second support part 32 Joint part 33 Fastener 33A, 33B Long hole 34 Connection outer wall material 40 Frame 41 Column 42 Upper beam 43 Lower beam

Claims (5)

[Claims] 1. A method of expanding a building to be built on an extension site adjacent to the main body of the building, the method comprising: connecting four pillars, an upper beam connecting upper ends of these pillars, and a lower end of the pillars. An extension unit having a box-shaped frame including lower beams is formed in advance, a foundation is provided on the extension site, and the extension unit is placed on the foundation, and then the extension is added. A building extension method, characterized in that the building unit is connected to the building body through an expansion joint. 2. The building extension method according to claim 1, wherein the building body includes four columns, an upper beam connecting upper ends of the columns, and a lower beam connecting lower ends of the columns. Is a unit-type building constructed by combining a plurality of building units each having a box-shaped skeleton configured to include the skeleton of the building unit and the skeleton of the extension unit through the expansion joint. A building extension method characterized by: 3. The building extension method according to claim 2, wherein the upper portion of each frame of the extension unit and the building unit, and the lower portion of each frame of the extension unit and the building unit are connected to each other. A method for expanding a building, characterized by being connected through an expansion joint. 4. The building extension method according to claim 2 or 3, wherein the expansion joint is provided between a first support portion, a second support portion, and the first and second support portions. And a fastener that connects the support portion and the joint portion through elongated holes that are orthogonal to each other, and the joint surface is provided on the facing surface of each frame of the extension unit and the building unit in advance. The first and second support portions are provided to face each other, and after the extension unit is arranged on the foundation, the joint portion is bridged over the first and second support portions, and the joint portion and A method for expanding a building, characterized in that the support units are connected to each other by the fasteners, and the expansion unit is connected to the building unit. 5. The building extension method according to any one of claims 1 to 4, wherein the building body has a planar shape with a recess, and the extension unit is shaped to fit in the recess. It is formed in advance, the foundation is provided on the extension site including the recess, the extension unit is arranged on the foundation, and then the extension unit is connected to the building body through the expansion joint. A method of expanding a building characterized by that.