JPH10280547A - Well construction of unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide well construction of a unit building capable of forming a large well space. SOLUTION: Well construction of a unit building 1 for forming a well space 4 passing through both upper and lower floors by mounting a box-shaped upstairs well unit 42 having an opened lower surface on a box-shaped downstairs well unit 41 having an opened upper surface is so constituted that a bridge unit 43 is constructed across over the well space 4. Since the bridge unit 43 constructed across the well space 4 is used for reinforcement, the rigidity of the well space 4 is sufficiently ensured, and the large well space 4 can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-shaped upper-floor unit having an open upper surface and a box-like upper-floor open unit having an open lower surface. The present invention relates to a stairwell structure of a unit building that forms a space.

[0002]

2. Description of the Related Art Conventionally, unit-type buildings formed by combining rectangular parallelepiped building units manufactured in a factory in advance at a construction site have been used. According to such a unit-type building, since interior materials, flooring materials, and other equipment members are shipped from the factory in a state where they are incorporated in the building unit in advance, work at the building site is greatly reduced, and the There is an advantage that it can be built with. The building unit that constitutes such a unit-type building includes columns that are erected at four corners, and upper beams and lower beams that connect between the upper ends and lower ends of these columns. Has a brace along the diagonal,
The rigidity against horizontal load and vertical load acting on the building unit is secured.

[0003] On the other hand, in recent houses, there is a case where a stairwell space communicating with the upper and lower floors is provided inside the house. In a unit type building, a box-shaped lower floor stairwell which is arranged on the lower floor and whose upper surface is opened. The unit and the box-shaped upper floor open-air unit arranged on the upper floor of the lower floor open-air unit and having an open lower surface are vertically stacked to form an open-air space inside the unit-type building.

[0004]

However, if a plurality of lower floor atrium units having an open upper surface are arranged adjacent to each other, these lower floor atrium units are not provided with braces along the diagonal line of the upper surface, so that the unit type is not provided. Conventionally, it is difficult to secure the rigidity of the entire building. Conventionally, a plurality of lower-floor stairwell units are staggered in different rows, and the upper-floor stairwell units are placed on each lower-floor stairwell unit. Formed a space. For this reason, there has been a long-felt need for a unit-type building atrium structure in which a plurality of the atrium units can be arranged adjacently to form a large atrium space.

An object of the present invention is to provide a stairwell structure of a unit-type building which can be arranged adjacent to a plurality of stairwell units to form a large stairwell space.

[0006]

According to the present invention, referring to the reference numerals in the drawings, a unit-type building atrium structure according to the present invention will be described.
Above, a box-shaped upper floor atrium unit 4 with a lower surface opened
2 is mounted, and the atrium structure of the unit-type buildings 1 and 6 forming the atrium spaces 4 and 7 communicating with the upper and lower floors, wherein the bridge units 43 and 53 cross the atrium space.
63 and 73 are bridged. According to the present invention, since the bridge unit is bridged in the stairwell, the bridge unit serves as reinforcement and can sufficiently secure the rigidity of the stairwell,
A large atrium space can be formed in a unit building. Further, since only a narrow bridge unit is bridged in the large atrium space, the upper view of the atrium space is not unnecessarily squeezed and the open feeling of the atrium space is not impaired.

[0007] In the above, the stairwells 4, 7 are substantially rectangular in plan view formed by arranging at least two lower stairwell units adjacent to each other, and placing the upper stairwell units on these lower stairwell units. In the case of a rectangular shape, the bridge units 43, 53, 63, 73 may be bridged along a diagonal line of the rectangle, or may be bridged along the sides of the rectangle. That is, bridge unit 6
By bridging 3, 73 along a rectangular diagonal line, it becomes possible to reinforce the atrium space 7 with a bridge unit arranged on the diagonal line, and this bridge unit plays the role of a blow beam of the atrium space. It is possible to form a large blow-through space with extremely high rigidity.

On the other hand, when the bridge units 43 and 53 are bridged along the sides of the rectangle, the lower beams 424 and the like of the upper floor atrium unit 42 extend along the sides of the rectangle. The end portions in the direction can be easily joined to the lower beam with bolts and nuts or the like, thereby simplifying the joining structure of the bridge unit. In addition, by arranging the bridge unit near the edge of the atrium space, it becomes possible to make the bridge unit less likely to be seen by the occupants, so that the upper view of the atrium space is further expanded, and a more open atrium space is provided. Is formed.

Further, as the bridge unit, it is preferable to use a bridge unit having a structure in which rigidity against both a vertical load and a horizontal load acting on the floor space is secured on the floor thereof. However, it is preferable to employ a bridge unit 43 provided with a steel plate 431A having a U-shaped cross section orthogonal to its extending direction. That is,
Since the rigidity is secured on the floor, it is not necessary to provide a structure for securing rigidity in the handrail 432 erected along the edge of the floor, and the structure of the bridge unit can be simplified. It becomes possible. Furthermore, since the structure of the handrail can be simplified, the bridge unit can be made inconspicuous in appearance, and the feeling of opening the atrium space can be further improved.

[0010] As the above-mentioned bridge unit, it is preferable to adopt bridge units 43 and 53 integrally provided inside one upper floor stairwell unit 42 constituting the stairwell. In other words, since the bridge unit is provided integrally inside the upper floor atrium unit, the bridge unit erection work can be completed at the same time as mounting the upper floor atrium unit, and it is necessary to separately build the bridge unit at the construction site Therefore, it is possible to greatly reduce the on-site work.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a unit-type building according to a first embodiment of the present invention.
This is a two-story building having a cast-in-place foundation 2 and a building body 3 provided on the foundation 2, and inside the building body 3, a stairwell 4 communicating with upper and lower floors is formed. . The building body 3 includes a plurality of rectangular lower-floor building units 31 arranged adjacent to each other on the foundation 2 and a rectangular parallelepiped upper-floor building unit 3 mounted on the lower-floor building units 31.
2 is provided.

The atrium space 4 formed in the interior of the building body 3 is formed by placing a rectangular parallelepiped upper floor atrium unit 42 with an open lower surface on a rectangular parallelepiped lower floor atrium unit 41 with an open upper surface. It is formed. The internal partition wall 3A of the building body facing the atrium space 4 is
The upper-floor building unit 42 is formed to recede inward from the rectangular parallelepiped side surface. On the outside of the partition wall 3A, a corridor (hereinafter referred to as an upper floor corridor) 3B for the upper floor living room is formed so as to face the atrium space 4, and as a passage for the upper floor between the opposing upper floor corridors 3B. The bridge unit 43 is bridged across the atrium space 4.

The lower-floor building unit 31 of the lower floor of the building body 3 is arranged in a plane so as to be substantially rectangular as a whole, as shown in the plan view of the lower floor of FIG. The blow-by space 4 is formed by two lower-floor blow-by units 41 having their long sides adjacent to each other, and has a substantially rectangular shape in plan view. The lower-floor building unit 31 includes columns 312 erected at four corners, and upper ends of these columns 312,
A substantially rectangular parallelepiped frame 311 having an upper beam 313 and a lower beam 314 connecting the lower ends is provided.
A pair of braces 315 for securing rigidity along a diagonal line of a rectangle are erected on the upper surface of. On the other hand, the lower floor atrium unit 41 includes a rectangular parallelepiped frame 411 having a framed structure like the lower floor building unit 31. The frame 411 includes a column 412, an upper beam 413, and a lower beam 414. On the upper surface of 411, a brace along a rectangular diagonal line is not provided, and a ceiling material is omitted to form an opening surface.

The lower-floor building unit 31 and the lower-floor atrium unit 41 are connected to each other by a connecting plate 33 disposed over a dense portion of the columns 312, 412. When a horizontal load F is applied to the unit-type building 1, the individual lower-floor building units 31 have a horizontal structure formed by the upper beams 313 and the braces 315 to secure rigidity. Thus, the rigidity of the portion formed only by the lower-floor building unit 31 is ensured. On the other hand, since no braces are installed on the lower floor atrium unit 41, rigidity is ensured by the bridge unit 43 that is bridged by using two adjacent lower floor atrium units 41 as a unit. And
By connecting these lower floor atrium units 41 to the lower floor building unit 31 by the connection plate 33,
The rigidity of the entire unit-type building 1 including the atrium space 4 is ensured.

As shown in FIG. 3, the bridge unit 43 is provided inside the upper floor atrium unit 42 disposed on the lower floor atrium unit 41. The upper floor stairwell unit 42 has a steel frame 421 having a frame structure. The frame 421 is provided with columns 422 erected at four corners and an upper beam 42 connecting between upper ends and lower ends of these columns 412.
3, the lower beam 424 is formed, no floor material is provided on the lower surface of the frame 421, and an opening surface 42A is formed. Although not shown in FIG. 3, a ceiling surface material is provided on the upper surface of the rectangular parallelepiped of the frame 421, and a pair of braces 425 are provided along a diagonal line of a rectangle.

The four lower beams 424 are made of a C-shaped steel, and the openings of the C-shaped steel are arranged toward the inside of the upper floor atrium unit 42. Inside each of the openings, the lower beams 424 are reinforced. The reinforcement 426 made of C-shaped steel is
Are provided along the extension direction. The upper beam 413 made of a C-shaped steel forming the upper opening of the lower floor atrium unit 41 is also provided with a reinforcing material.
There are three reinforcements. The above-mentioned bridge unit 43 is erected between a pair of lower beams 423 forming a short side of the upper floor atrium unit 41. The bridge unit 43 has a predetermined width dimension, and its floor finishing height is equal to that of the upper floor corridor 3 described above.
The floor 431 has a floor portion 431 substantially equal to the floor surface height of B, and handrail portions 432 erected at both ends along the extending direction of the floor portion 431.

As shown in FIG. 4, the floor portion 431 of the bridge unit 43 has a steel plate 431A having a U-shaped cross section orthogonal to its extending direction, and the U-shaped opening surface of the steel plate 431A faces downward. On the upper surface of the steel plate 431A, a floor surface material 431B having the same floor level as the upper floor corridor 3B described above is provided.
Is provided. Although not shown in FIG. 4, between the upper surface of the steel plate 431A and the lower surface of the floor member 431B, a joist for fixing and adjusting the level of the floor member 431B extends in the extending direction of the floor part 431. Plural pieces are interposed in the orthogonal direction. In addition, the handrail portion 432 includes a plurality of pillars standing upright at the end of the floor portion 431 at a predetermined interval, and a handrail connecting upper ends of these pillars.
Glass is provided.

The bridge unit 43 and the above-mentioned upper floor stairwell unit 42 are fixed by joining a plurality of bolts 433 together.
This is performed by screwing and fixing the reinforcing member 426 provided on the lower beam 423 of the upper-floor building unit 42. That is, an end plate 434 made of a thick steel plate is joined and fixed to the end of the floor portion 431 of the bridge unit 43 in the extending direction by welding, and near the both ends of the end plate 434, bolts 433 are inserted. A plurality of insertion holes are formed. As shown in FIG. 5, a back nut 426A is welded and fixed to the vertical inner side surface of the reinforcing member 426 so as to correspond to the insertion hole of the end plate 434. Then, the bolt 433 is inserted into the insertion hole of the end plate 434, and is screwed and fixed to the nut 426A.

After assembling the frame 421 of the upper floor stairwell unit 42, such a bridge unit 43 is attached to the upper floor stairwell unit 42 in advance at a factory. Then, by placing the upper floor atrium unit 42 after the lower floor atrium unit 41 is placed on the foundation 2 at the construction site, the bridge unit 43 to the atrium space 4 is simultaneously placed.
Is completed.

According to the first embodiment described above, the following effects can be obtained. That is, since the bridge unit 43 is bridged over the atrium space 4, the bridge unit 4
The reinforcement of the space 3 makes it possible to sufficiently secure the rigidity of the space 4, and the large space 4 can be formed inside the unit building 1. Bridge unit 4
3 forms a continuous floor with the upper floor corridor 3B,
By using this bridge unit 43 on the upper floor,
Effective use of the upper floor space can be achieved.

Further, since the narrow bridge unit 43 is merely bridged in the atrium space 4, the upper view of the atrium space 4 is not pressed unnecessarily, and the open feeling of the atrium space 4 is impaired. Nor. Furthermore, when the bridge unit 43 is bridged along the rectangular sides, the end plate 434 at the end of the bridge unit 43 and the upper floor atrium unit 42 extending in a direction orthogonal to the direction in which the bridge unit 43 extends. Bolt 433 to the side of beam 424
Therefore, the joining structure of the bridge unit can be simplified. Since the floor 431 of the bridge unit 43 is provided with the steel plate 431A having a U-shaped cross section, the bridge unit 43 can not only secure rigidity against a vertical load such as its own weight, but also maintain the rigidity of the bridge unit 43.
Sufficient rigidity can be ensured even with respect to the horizontal load F acting in the extension direction of No. 3.

Further, since the rigidity of the bridge unit 43 is ensured by the floor portion 431, it is not necessary to provide the handrail portion 432 with a structure such as a truss for ensuring rigidity. Therefore, as described above, the structure of the handrail portion 432 made of glass provided between the plurality of columns and the adjacent columns can be simplified, and the upward view of the blow-through space 4 is not pressed by the handrail portion 432. In addition, the feeling of opening the atrium space 4 is further improved. Furthermore, since the bridge unit 43 is integrally provided inside the upper floor atrium unit 41, the work of erection of the bridge unit 43 can be completed simultaneously with the mounting of the upper floor atrium unit 41. It is not necessary to perform the erection work, and it is possible to significantly reduce the on-site work.

Next, a second embodiment of the present invention will be described. In the following description, description of members or portions that are the same as or similar to those already described will be omitted or simplified. In the first embodiment described above, the bridge unit 43 provided in the upper floor atrium unit 42 includes the floor 431 having a steel plate 431A having a U-shaped cross section as a structure. On the other hand, as shown in FIG. 6, the bridge unit 53 according to the second embodiment has a ladder-like base frame 531A constituting the floor 531 as a structure.

The base frame 531A has a floor surface member 531B provided on the upper surface thereof and a pair of steel reinforcing beams 5 extending in the long side direction of the rectangular parallelepiped of the upper floor stairwell unit 42.
31C and a steel joist 531D erected between the reinforcing beams 531C. Base frame 5
31A is formed using the structural members of the upper floor atrium unit 42 and the above-described upper floor building unit 32, and joins the column 422 of the upper floor atrium unit 42, the upper beam 423, and the lower beam 424 by welding. At the same time, the base frame 531A is also formed by welding in the upper floor unit 42 at the same time.

According to the second embodiment, the following effects are obtained in addition to the effects of the first embodiment. That is, the base frame 531A is the reinforcing beam 531C.
It is formed of the same members as the components of the upper floor stairwell unit 42 such as steel and steel joists 531D, and it is easy to procure the members. Therefore, there is no need to prepare a dedicated member for forming the base frame 531A. The bridge unit 53 can be formed only by processing the above member. In addition, since it is not necessary to prepare a dedicated member for forming the bridge unit 53, it is possible to simplify the member management and reduce the manufacturing cost of the bridge unit 53. In addition, since the base frame 531A has a very simple structure of a pair of reinforcing beams 531C and a plurality of joists 531D, the bridge unit 53 is connected to the upper floor open unit 4
2, and the width of the bridge unit 53 can be freely set.

Next, a third embodiment of the present invention will be described. In the first embodiment described above, the unit building 1
The bridge unit 43 has a rectangular through-hole space 4 having a rectangular shape in plan view formed by arranging two lower-floor unit 41 adjacent to each other, and the bridge unit 43 is bridged along the sides of the rectangle. On the other hand, the unit-type building 6 according to the third embodiment has a larger rectangular open space 7 formed by arranging the four lower floor open units 41 adjacent to each other, as shown in FIG. The bridge unit 63 is different in that it is bridged along the diagonal line of the rectangle. The configuration of the bridge unit 63 is not shown in FIG.
The configuration is substantially the same as the bridge unit 53 according to the embodiment,
A pair of reinforcing beams are erected along the diagonal line of the upper floor atrium unit 42, and a steel joist is erected at a predetermined pitch between the pair of reinforced beams to form a base frame. Further, the bridge unit 63 is divided into an upper floor atrium unit which is placed on each of the lower floor atrium units 41 constituting the atrium space 7, and the upper floor atrium unit 42 is placed at a building site. It is formed by connecting each other when doing.

According to the third embodiment, the following effects are obtained in addition to the effects of the first and second embodiments. In other words, it is possible to reinforce the atrium space 7 with the bridge units 63 arranged diagonally, and since the bridge unit 63 serves as a blow beam of the atrium space 7, the large atrium space 7 having extremely high rigidity can be provided. Can be formed.

The present invention is not limited to the above-described embodiment, but includes the following modifications. That is, in the above-described third embodiment, one bridge unit is provided along the diagonal line of the rectangular shape in the rectangular atrium space 7 in which the four lower floor atrium units 41 and the upper floor atrium unit are arranged adjacent to each other. 63 had been bridged. However, as shown in FIG. 8, a structure in which the atrium space 7 is divided at the center and two bridge units 73 are bridged in a V shape along the diagonal line of each rectangular portion may be adopted. In short, the position and the number of the bridge units to be bridged over the stairwell may be appropriately set according to the horizontal load and the vertical load in design, the flow line of the upper floor room, the upper visibility of the stairwell, and the like.

In the first embodiment, the bridge unit 43 is fixedly connected to the upper floor atrium unit 42 at the factory. However, the present invention is not limited to this, and the upper floor atrium unit 42 and the bridge unit 43 are separately provided. It may be transported and fixed at the construction site. That is, since the joint between the upper floor unit 42 and the bridge unit 43 is fixed by the bolt 433, the joining operation can be performed without selecting a place with a simple tool.

Further, in the above embodiment, the upper floor corridor 3
In order to match the floor level with B, bridge units 43, 5
Although 3, 63 and 73 are fixedly joined to the upper floor atrium unit 42, the present invention is not limited to this, and even if a bridge unit is bridged between a pair of upper beams 413 of the lower floor atrium unit 41 facing each other, The same effects as in the embodiment can be enjoyed. In the above-described embodiment, the bridge unit 4
Although 3, 53, 63 and 73 are provided as passages exclusively for the upper floor, the present invention is not limited to this. The same effect as described above can be enjoyed. In addition, specific structures, shapes, and the like at the time of carrying out the present invention may be other structures and the like as long as the object of the present invention can be achieved.

[0031]

As described above, according to the atrium structure of the unit-type building of the present invention, since the bridge unit is bridged in the atrium space, the bridge unit is reinforced to sufficiently increase the rigidity of the atrium space. And a large open space can be formed in the unit building.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a unit-type building according to a first embodiment of the present invention.

FIG. 2 is a plan layout view of a lower-floor building unit and the like in the unit-type building in the above-described embodiment.

FIG. 3 is a schematic perspective view showing an upper floor atrium unit and a bridge unit in the embodiment described above.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a vertical sectional view showing a joint structure of an upper floor stairwell unit and a bridge unit.

FIG. 6 is a schematic perspective view illustrating an upper floor atrium unit and a bridge unit according to a second embodiment of the present invention.

FIG. 7 is a plan layout view corresponding to FIG. 2 showing a unit building according to a third embodiment of the present invention.

FIG. 8 is a plan view showing a modification of the unit-type building according to the third embodiment.

[Explanation of symbols]

 1,6 Unit-type building 4,7 Ventilation space 41 Lower floor ventilation unit 42 Upper floor ventilation unit 43,53,63,73 Bridge unit 431 Floor 431A Steel plate F Horizontal load

Claims (6)

[Claims] 1. A unit type in which a box-shaped upper floor stairwell unit having an open lower surface is placed on a box-shaped lower floor stairwell unit having an open upper surface to form a stairwell space communicating with upper and lower floors. A stairwell structure for a unit-type building, wherein a bridge unit crossing the stairwell space is bridged. 2. The stairwell structure of a unit-type building according to claim 1, wherein the stairwell has at least two lower floor stairwell units adjacent to each other, and the upper stairwell unit is located above these lower stairwell units. The bridge unit has a substantially rectangular shape in a plan view formed by placing the bridge, and the bridge unit is bridged along a diagonal line of the rectangle. 3. The stairwell structure of a unit building according to claim 1, wherein said stairwell has at least two lower floor stairwell units adjacent to each other, and said upper stairwell unit is located above said lower stairwell units. The bridge unit has a substantially rectangular shape in plan view formed by placing the bridge unit, and the bridge unit is bridged along a side of the rectangle. 4. A stairwell structure for a unit-type building according to claim 1, wherein the floor of said bridge unit has a rigidity against both a vertical load and a horizontal load acting on said stairwell. A stairwell structure for unit-type buildings, characterized by having a secured structure. 5. The bridge structure of a unit building according to claim 4, wherein the floor of the bridge unit is provided with a steel plate having a U-shaped cross section orthogonal to the extending direction. Atrium structure of a unit building. 6. A stairwell structure for a unit-type building according to any one of claims 1 to 5, wherein said bridge unit is integrally provided inside an upper floor stairwell unit constituting said stairwell space. The atrium structure of a unit-type building characterized by the following.