JP5970306B2 - building - Google Patents

Description

  The present invention relates to a building.

  Conventionally, as a building such as a house, a unit-type building configured by connecting a plurality of rectangular parallelepiped building units having beams and pillars is known (see, for example, Patent Document 1). In such a unit type building, when stairs are installed in the building, the stairs are incorporated in the building unit. In this case, the stairs are incorporated so as not to interfere with the pillars and beams of the building unit.

JP-A-6-42052

  By the way, as a staircase, there is a straight staircase whose elevation direction extends in a straight line. Since the straight staircase has a long rectangular shape in plan view, it tends to interfere with the beams and pillars of the building unit when it is to be incorporated into the building unit. For this reason, there exists a possibility that the freedom degree regarding arrangement | positioning of stairs may be restrict | limited largely. For example, installing a straight staircase in a building unit so that its longitudinal direction is in the short direction of the building unit in plan view is not possible unless a special configuration such as removing a part of the beam of the building unit is adopted. It seems possible.

  In addition, although it is possible to install a straight staircase in a building unit so that its longitudinal direction faces the longitudinal direction of the building unit in plan view, in that case the side of the straight staircase in the building unit (width direction) There is a possibility that a halfway surplus space may be generated, which is not preferable from the viewpoint of effective use of the space in the building.

  The present invention has been made in view of the above circumstances, and when installing a staircase portion having a long rectangular shape in plan view, it is possible to increase the degree of freedom regarding the installation and to effectively use the space in the building. The main purpose is to provide a building capable of achieving this.

  In order to solve the above problem, the building of the first invention is a unit type building having a plurality of building units formed by connecting beams and columns, and having a lower floor and an upper floor adjacent to each other in the vertical direction. The unit sets, which are combinations of the upper and lower floor building units, are spaced apart from each other, and a space between the lower floor portion and the upper floor portion is formed between the separated unit sets. And the stairwell portion is provided with a staircase portion that connects the lower floor portion and the upper floor portion, and the staircase portion is long and rectangular in plan view, The longitudinal direction is arranged in a direction orthogonal to the unit facing direction in which the unit sets separated from each other face each other.

  According to the present invention, the staircase portion having a long rectangular shape in plan view is installed in the atrium space formed by placing unit sets that are combinations of building units on the upper and lower floors apart. In this case, since such a long staircase can be installed outside the building unit, such a staircase can be installed without being restricted by beams or columns of the building unit. Can increase the degree of freedom.

  In addition, since the staircase portion is installed outside the building unit, a halfway wasteful space is not generated in the building unit as in the case where the staircase portion is installed in the building unit. Further, the staircase portion is arranged in a direction orthogonal to the unit facing direction in which unit sets placed apart from each other in the plan view are opposed to each other, in other words, the short direction (width direction) is opposed to the unit. Since the unit sets are arranged in the direction, it is possible to avoid generation of useless space on the side of the staircase portion in the atrium space by separating the unit sets according to the width of the staircase portion. Thereby, the effective use of the space in a building can be aimed at.

  In the building of the second invention, in the first invention, a staircase support beam is provided so as to straddle between the separated unit sets at the boundary height between the lower floor part and the upper floor part. The staircase portion has a placement portion placed on a floor or a foundation at a lower end portion thereof, and has a hook portion hooked and supported by the staircase support beam on an upper end side thereof. Features.

  According to the present invention, the stair support beam is provided so as to straddle between the unit sets spaced apart at the boundary height (inter-floor portion) between the lower floor portion and the upper floor portion, The mounting portion provided at the lower end portion is placed on the floor or the foundation, and the hook portion provided on the upper end side is hooked and supported by the stair support beam. In this case, since it is not necessary to support the staircase part by the partition wall on the side surface side, it is possible to suppress the vibration and noise when raising and lowering the staircase part from being transmitted to the room adjacent to the atrium space through the partition wall. Can do.

  The building of a third invention is the building according to the second invention, wherein the unit set is further provided adjacent to the atrium space in a direction orthogonal to the unit facing direction, and vertically above and below the unit set. Either the upper floor beam of the adjacent upper floor unit or the lower floor beam of the lower floor unit is the stair support beam, and the hook portion is hooked and supported by the stair support beam. To do.

  According to the present invention, since the hook portion of the staircase portion is hooked and supported by the lower floor beam of the lower floor unit or the upper floor beam of the upper floor unit, the staircase support beam for hooking and supporting the hook portion is separately provided. There is no need to provide this, and the effect of the second invention can be obtained while suppressing the complication of the configuration.

  In addition, in the configuration in which the hook part of the staircase is hooked and supported by the lower floor ceiling beam or the upper floor beam, the upper floor of the staircase has a stairway entrance (exit at the top of the staircase) and the interior of the building unit (upper floor unit). Since the space can be continuous, it is not necessary to provide a floor portion that connects the stairway entrance of the staircase portion and the inside of the building unit on the upper floor portion. Therefore, also in this respect, complication of the configuration can be suppressed.

  The building of the fourth invention is the building according to any one of the first to third inventions, in a direction perpendicular to the unit facing direction with respect to the first unit set which is one of the unit sets separated from each other. A second unit set as the unit set is further provided adjacently, and the length of the second unit set in the unit facing direction is longer than that of the first unit set, and the unit facing direction The first unit set has an extension portion extending toward the blow-off space, and the extension length of the extension portion is the same as the length of the blow-off space in the unit facing direction. It is characterized by being.

  According to the present invention, the second unit set is provided adjacent to one of the separated unit sets (first unit set) in a direction orthogonal to the unit facing direction, and the second unit set is The first unit set is provided so as to extend toward the blow-through space. In this case, since the extended portion is arranged adjacent to the atrium space in a direction perpendicular to the unit facing direction, the stairway exit and the staircase exit of the staircase installed in the atrium space It can be conveniently connected to the extension.

  Here, a unit set in which the length in the unit facing direction is set to the same length as the length in the same direction of the atrium space (in other words, the width of the atrium space) is a direction orthogonal to the unit facing direction with respect to the atrium space. It is possible to obtain the above effect even if it is installed adjacent to the. However, in this case, since the width of the blow-through space is the same as the length of the unit set in the unit facing direction, it is difficult to form the blow-through space with a small width according to the width of the staircase portion. In this regard, in the present invention, the second unit set is formed to be longer than the first unit set, and the (extension) length of the extending portion extending from the first unit set in the second unit set is set to Since it is the same as the width, it is easy to form the blow-by space with a small width, and it can be said that this is a practically preferable configuration for obtaining the above effect.

  In the building of the fifth invention according to any one of the first to fourth inventions, a partition wall is provided on each side surface facing each other in the separated unit set, and the partition walls The side surface of the elevating passage space formed by the staircase is defined.

  According to the present invention, since the side surface of the elevating passage space formed by the staircase is defined by the partition wall, it is not necessary to provide a staircase side wall in the staircase, and the configuration of the staircase can be simplified. In addition, since the size of the staircase can be reduced by not providing the staircase side wall in the staircase, first, each building unit is installed to form the atrium space during construction, and then the staircase portion is placed in the atrium space. It can be carried from the outside through the entrance. In this case, since the staircase portion is manufactured in advance at the manufacturing factory and the manufactured staircase portion only needs to be installed in the atrium space, the number of construction steps can be reduced.

  A building of a sixth invention is the building according to any one of the first to fifth inventions, wherein the atrium space is adjacent to the semi-outdoor space or the outdoor space with a partition wall in a direction orthogonal to the unit facing direction. The partition wall is provided with a building opening that allows the atrium space to communicate with the semi-outdoor space or the outdoor space, and the staircase is formed to be insertable into the building opening. Features.

  According to this invention, the building opening part which connects both these spaces is provided in the partition wall which partitions the atrium space from the semi-outdoor space or the outdoor space, and the staircase part is formed so that it can be inserted into the building opening part. Here, examples of the building opening include an entrance provided on the lower floor and a sweep window. In this case, the staircase is manufactured in advance at the manufacturing factory, and each building unit is first installed to form the atrium space, and then the staircase is carried into the atrium space through the building opening. Is possible. As a result, it is not necessary to assemble the staircase at the construction site (atrium space) or to disassemble the staircase once when the staircase is brought into the atrium space. It becomes possible.

(A) is a schematic perspective view which shows the whole building, (b) is an exploded perspective view which shows a building main body. The first floor part of the building is shown, (a) is a plan view showing the arrangement of building units on the first floor part, and (b) is a plan view showing the floor plan of the first floor part. The second floor part of the building is shown, (a) is a plan view showing the arrangement of the building units of the second floor part, (b) is a plan view showing the floor plan of the second floor part. The perspective view which shows a building unit. The perspective view which shows a floor unit. The perspective view which shows the structure of a stair unit. The installation structure of the stair unit is shown, (a) is a front view showing the same structure, and (b) is a plan view. Sectional drawing which shows the structure around the lower end part of a staircase unit. Sectional drawing which shows the structure around the upper end part of a staircase unit. The top view which shows another example of a staircase part.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the unit type building which consists of two stories is materialized as a building. The unit type building includes a building body in which a plurality of building units are coupled to each other. In FIG. 1, (a) is a schematic perspective view which shows the whole building, (b) is a disassembled perspective view which shows a building main body. 2A and 2B show the first floor portion of the building. FIG. 2A is a plan view showing the arrangement of building units on the first floor portion, and FIG. 2B is a plan view showing the floor plan of the first floor portion. 3A and 3B show the second floor part of the building, in which FIG. 3A is a plan view showing the arrangement of building units on the second floor part, and FIG. 3B is a plan view showing the floor plan of the second floor part.

  As shown in FIG. 1A, the building 10 includes a building body 12 disposed on the foundation 11 and a roof 13 disposed above the building body 12. The building body 12 has a two-story structure composed of a first floor portion 14 as a lower floor portion and a second floor portion 15 as an upper floor portion. The building body 12 is configured such that a plurality of building units 20 formed in a rectangular parallelepiped shape are connected to each other.

  In the following description, for convenience, the building unit 20 of the first floor portion 14 is also referred to as a lower floor unit 20a, and the building unit 20 of the second floor portion 15 is also referred to as an upper floor unit 20b.

  FIG. 4 is a perspective view of the building unit 20. As shown in the figure, the building unit 20 includes four columns 21 disposed at the four corners thereof, and four ceiling beams 22 and floor beams 23 that connect the upper end and the lower end of each column 21, respectively. And. A rectangular frame (frame) is formed by the pillars 21, the ceiling beams 22 and the floor beams 23. The column 21 is made of a square tube-shaped square steel. Moreover, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are installed so that the openings thereof face each other.

  A plurality of small ceiling beams 25 are bridged between the large ceiling beams 22 on the long sides of the building unit 20 at predetermined intervals. Similarly, a plurality of floor beams 26 are bridged between the large floor beams 23 on the long sides of the building unit 20 at predetermined intervals. The ceiling beam 25 and the floor beam 26 are provided at the same interval and at positions corresponding to the upper and lower sides, respectively. For example, the ceiling beam 25 is made of lip groove steel, and the floor beam 26 is made of square steel. The ceiling member 27 is supported by the ceiling beam 25 and the floor member 28 is supported by the floor beam 26.

  As shown in FIG. 1 (b), the building body 12 is roughly divided into two building unit groups X1 and X2. Each building unit group X1, X2 includes a plurality (specifically four) of unit sets 24 each composed of a combination of a pair of upper and lower building units 20a, 20b, and the plurality of unit sets 24 are arranged in a line. Has been. In each unit set 24, one lower floor unit 20a and one upper floor unit 20b are arranged one above the other with their longitudinal directions (and short directions) oriented in the same direction. Each of the building unit groups X1 and X2 is configured by arranging the unit sets 24 in a line in the short direction.

  In the building body 12, the building unit groups X1 and X2 are provided side by side. In this case, adjacent unit sets 24 in each building unit group X1, X2 are arranged with their short side faces (faces) facing each other. In the following, in FIG. 1B, the left building unit group is referred to as a first building unit group X1, and the right building unit group is referred to as a second building unit group X2.

  The building body 12 is configured as a building unit 20 by combining two types of building units 20X and 20Y having different length dimensions in the longitudinal direction (long side portion). Among the building units 20X and 20Y, those having a short length in the longitudinal direction are short building units 20X, and those having a long length in the longitudinal direction are long building units 20Y. The length in the longitudinal direction of the short building unit 20X is L1, and the length in the longitudinal direction of the long building unit 20Y is L2. The short building unit 20X and the long building unit 20Y have the same length in the short direction (specifically, the short direction in plan view).

  In the first building unit group X1, in each unit set 24, the building units 20a and 20b on the upper and lower floors are respectively constituted by short building units 20X. In the second building unit group X2, each of the upper and lower floors of the unit set 24 on one side (the back side in FIG. 1B) of the unit sets 24 arranged at both ends in the row direction (unit row direction). Building unit 20a, 20b is comprised by the long building unit 20Y (refer also Fig.2 (a) and Fig.3 (a)).

  In the unit set 24 on the other side (the front side in FIG. 1B), the lower floor unit 20a is constituted by a short building unit 20X, and the upper floor unit 20b is constituted by a long building unit 20Y. In this case, in the unit set 24, the lower floor unit 20a and the upper floor unit 20b are aligned with each other on the same plane on the outer peripheral side of the building (in other words, on the side opposite to the first building unit group X1). The upper floor unit 20b is provided in a state of protruding from the lower floor unit 20a to the first building unit group X1 side. In this case, a concave space is formed below the overhanging portion of the upper floor unit 20b, and the space is an alcove 18 described later. In addition, each building unit 20a, 20b on the upper and lower floors of each unit set 24 arranged in the middle part in the unit row direction is constituted by a short building unit 20X.

  In the second building unit group X2, each unit set 24 is arranged such that the end face of the building (on the opposite side to the first building unit group X1 side) is located on the same plane. In this case, in the second building unit group X2, the unit set 24 located at the end protrudes (extends) toward the first building unit group X1 rather than the unit set 24 located at the intermediate part. Only the difference (L2-L1) between the long side length L2 of the long building unit 20Y and the long side length L1 of the short building unit 20X is projected (extended). Thereby, as for the 2nd building unit group X2, the planar view shape has comprised the substantially U shape which turned the groove part to the 1st building unit group X1 side.

  Here, the unit set 24 located at the end corresponds to the “second unit set”, and the unit set 24 located at the intermediate part corresponds to the “first unit set”. Further, in the unit set 24 located at the end, the portion extending to the first building unit group X1 side from the unit set 24 located in the middle corresponds to the “extending portion”.

  1st building unit group X1 and 2nd building unit group X2 are arrange | positioned in the state which faced unit sets 24 arrange | positioned at the mutual edge part. In this case, in each unit group X1, X2, the unit sets 24 arranged in the intermediate part are spaced apart from each other. Specifically, these unit sets 24 are spaced apart from each other with an interval of L3 (= L2-L1). A blow-off space 17 is formed between the unit sets 24 that are separated from each other. The atrium space 17 is a space extending across the first floor portion 14 and the second floor portion 15.

  The first floor portion 14 is provided with a floor unit 30 constituting the floor portion of the atrium space 17. In FIG. 2A and FIG. 3A, for convenience, the floor unit 30 is illustrated by a broken line in order to distinguish it from the building unit 20. The floor unit 30 has a rectangular shape (rectangular shape) as a whole. Specifically, the length of the floor unit 30 is longer than the length of the building unit 20 in the short direction (short side portion) and more than twice the length of the building unit 20 in the short direction. The length in the short direction is the same as the distance L3 between the unit sets 24 spaced apart. The floor unit 30 is installed on the foundation 11 between the unit sets 24 separated from each other. The floor unit 30 is manufactured in advance in a unit manufacturing factory, like the building unit 20.

  FIG. 5 shows a perspective view of the floor unit 30. As shown in FIG. 5, the floor unit 30 includes a floor frame 31 formed in a rectangular frame shape and a floor surface material 32 supported on the floor frame 31. The floor frame 31 has basically the same configuration as the floor portion of the building unit 20, and 4 floor joints 33 arranged at the four corners of the floor frame 31 are connected to each floor joint 33. The floor frame girder 34 is provided, and a rectangular frame body is formed by the floor joint 33 and the floor frame girder 34.

  The floor joint 33 includes two joint plate portions 33a for joining two floor frame beams 34, and a lower plate portion 33b provided at the lower end thereof. The two splicing plate portions 33a are joined at right angles to each other, and the top portions thereof are arranged facing the unit inside. The floor frame girder 34 is made of the same channel steel as that of the floor girder 23, and is installed with its opening facing the inside of the unit.

  A plurality of floor frame small beams 35 are bridged and fixed at predetermined intervals between the floor frame large beams 34 facing the long side portions (girder portions). The floor frame beam 35 is made of the same square steel as the floor beam 26. In addition to the floor frame small beam 35, a support beam 37 is bridged and fixed between the long frame floor beams 34 facing each other. The support beam 37 is made of the same groove steel as the floor frame large beam 34, and has a higher strength than the floor frame small beam 35. The support beam 37 is disposed at a position corresponding to a location where a lower end portion of a stair unit 50 described later is installed.

  The floor material 32 is made of, for example, a particle board, and is formed with substantially the same size (vertical and horizontal dimensions) as the floor frame 31. The floor material 32 is fixed to the frame 31 with screws or the like while being placed on the floor frame 31.

  Next, the floor plan of the first floor portion 14 and the second floor portion 15 will be described with reference to FIGS. 2B and 3B.

  As shown in FIG. 2B, the atrium space 17 is partitioned from the first-floor room U1 by the partition wall 38 (38a) in the first-floor portion 14, and is partitioned from the first-floor room U2 by the partition wall 38 (38b). Yes. These partition walls 38a and 38b are arranged to face each other with the blow-off space 17 in between. As shown in FIG. 3B, the atrium space 17 is partitioned from the second-floor room U3 by the partition wall 39 (39a) in the second-floor portion 15, and is partitioned from the second-floor room U4 by the partition wall 39 (39b). . These partition walls 39a and 39b are arranged to face each other with the blow-off space 17 in between. The second floor portion 15 is further provided with a second floor room U5 adjacent to the atrium space 17.

  In the first floor portion 14, the atrium space 17 is partitioned from the alcove 18 by a partition wall 41. The alcove 18 is formed between the lower floor units 20a that are spaced apart from each other with their wife faces facing each other, and is a concave space that is open to the outside on one side. The alcove 18 corresponds to a semi-outdoor space.

  In the atrium space 17, a part of the space adjacent to the alcove 18 across the partition wall 41 is a entrance space 43. The entrance space 43 is a so-called dirt space, and is a space where the floor unit 30 described above is not disposed. That is, the floor unit 30 is disposed in the atrium space 17 so as to correspond to a space other than the entrance space 43, and is not disposed in the entrance space 43.

  In the partition wall 41, a doorway 42 that connects the entrance space 43 and the alcove 18 is formed. It is possible to go back and forth between the entrance space 43 and the alcove 18 through the entrance 42. The entrance door 42 is provided with an entrance door 44 that opens and closes the entrance door 42. The entrance 42 corresponds to a building opening.

  In the atrium space 17, a staircase unit 50 is provided in a space opposite to the entrance door 42 across the entrance space 43 (hereinafter, this space is referred to as a staircase installation space 45). That is, the floor unit 30 is provided corresponding to the staircase installation space 45, and the staircase unit 50 is installed on the floor unit 30.

  The stair unit 50 constitutes a stair part for moving back and forth between the first floor part 14 and the second floor part 15, and is manufactured in advance in a unit manufacturing factory. Specifically, the staircase unit 50 constitutes a straight staircase and has a rectangular shape extending in the ascending / descending direction (one direction) in plan view. Hereinafter, the configuration of the stair unit 50 will be described with reference to FIG. FIG. 6 is a perspective view showing the configuration of the stair unit 50.

  As shown in FIG. 6, the stair unit 50 includes a plurality of treads 51, a pair of side plates 52 that support both ends of the plurality of treads 51, a plurality of kick plates 53 provided between the treads 51, A pair of upper and lower support portions 54 and 55 are provided. The staircase unit 50 is set to have a width dimension that is the same as or slightly smaller than the distance L3 between the unit sets 24 that are spaced apart from each other. Is longer than the length of the building unit 20 (unit set 24) in the short direction.

  Of the support portions 54 and 55, the upper support portion 54 is formed of a long steel plate having an L-shaped cross section. The upper support portion 54 is bridged between the pair of side plates 52 on the lower surface side of the step board 51 arranged at the uppermost stage, and both end portions thereof are fixed to the side plates 52, respectively. The upper support portion 54 is fixed to the side plate 52 through an angle, for example.

  Specifically, the upper support portion 54 is a suspension plate 54a that is in contact with the lower surface of the uppermost tread 51, and a droop that extends downward from the end of the contact plate 54a on the kick plate 53 side. And a plate portion 54b. The drooping plate portion 54b is provided with a plurality of through hole portions 57 penetrating in the thickness direction at predetermined intervals along the longitudinal direction of the drooping plate portion 54b.

  On the other hand, the lower support portion 55 is formed of a long steel plate having a flat plate shape. The lower support portion 55 is bridged between the lower end portions of the side plates 52, and both end portions in the longitudinal direction are fixed to the side plates 52. The lower support portion 55 is fixed to the side plate 52 through an angle, for example. Further, the lower support portion 55 is provided with a plurality of through-hole portions 55 a penetrating in the thickness direction at predetermined intervals along the longitudinal direction of the lower support portion 55.

  Next, the installation configuration of the stair unit 50 will be described based on FIG. 7 in addition to FIG. 2 (b) and FIG. 3 (b). FIG. 7 shows an installation configuration of the stair unit 50, where (a) is a front view showing the configuration, and (b) is a plan view.

  As shown in FIG. 2B and FIG. 3B, the stair unit 50 is configured in a direction (unit facing) in the stair installation space 45 in the atrium space 17 in which unit sets 24 that are spaced apart in the ascending / descending direction face each other. It is installed in the direction perpendicular to the direction. In this case, the staircase unit 50 is arranged with its stairway entrance (stairs lower end side) directed toward the entrance space 43.

  As shown in FIG. 7A, the stair unit 50 is a unit set in which the lower end portion is placed on the floor unit 30 and the upper end side is located at the end portion in the second building unit group X2. 24 (specifically, the unit set 24 on the back side in FIG. 1B) is installed in a state of being hooked on the floor beam 23 of the upper floor unit 20b. As shown in FIG. 7B, the stair unit 50 is provided between the partition walls 38 and 39 that are disposed to face each other with the blow-through space 17 interposed therebetween. The partition walls 38 and 39 define the side surface of the lifting / lowering passage space 46 (the space above the staircase unit 50 in the blow-off space 17) formed by the unit 50.

  The partition walls 38 and 39 are configured by partition panels 49 provided on the side portions facing each other in the building unit 20 (unit set 24) that is separated from each other. The partition panel 49 includes a gypsum board and is fixed to the ceiling beam 22 and the floor beam 23 of the building unit 20.

  A handrail rod 48 is attached to one of the partition walls 38a, 38b (39a, 39b) on both sides of the staircase unit 50. The handrail bar 48 is used when the stair unit 50 is raised and lowered, and extends along the up and down direction of the stair unit 50. The handrail bar 48 may be attached to each of the partition walls 38a and 38b (39a and 39b) on both sides of the staircase unit 50.

  Next, the support configuration of the stair unit 50 will be described. FIG. 8 is a cross-sectional view showing a configuration around the lower end of the stair unit 50, and FIG. 9 is a cross-sectional view showing a configuration around the upper end of the stair unit 50.

  As shown in FIG. 8, the staircase unit 50 is fixed to the unit 30 with the lower support portion 55 positioned at the lower end thereof being placed on the floor surface material 32 of the floor unit 30. The lower support portion 55 is disposed along the support beam 37 above the support beam 37 of the floor unit 30. Through holes 32 a and 37 b are formed in the floor material 32 and the upper flange portion 37 a of the support beam 37 at positions corresponding to the through hole portions 55 a of the lower support portion 55, respectively. A nut 58 is fixed to the back surface of the portion 37a by welding at a position corresponding to the through-hole portion 37b. Bolts 59 are inserted into the through-hole portions 55a, 32a, and 37b, and the bolts 59 are fastened to the nuts 58. As a result, the lower end of the stair unit 50 is fixed to the floor unit 30.

  As shown in FIG. 9, the stair unit 50 is fixed to the large beam 23 in a state where the upper support portion 54 located on the upper end side is hooked and supported on the floor large beam 23 of the upper floor unit 20 b. A joist 61 is provided on the upper surface of the floor girder 23 (specifically, the upper flange portion 23b) along the girder 23, and a floor material 62 made of particle board is installed on the joist 61. ing. The joist 61 is arranged on the floor girder 23 such that the end portion on the side of the blow-through space 17 is located on the opposite side of the web space 23 a of the floor girder 23.

  The upper support portion 54 is placed at a position where the contact plate portion 54a is adjacent to the joist 61 on the upper surface of the floor beam 23 (specifically, the upper flange portion 23b). In such a mounted state, the uppermost tread 51 and the floor material 62 are arranged in a state in which their end surfaces are in contact with each other and their upper surfaces are substantially flush with each other. In this case, the elevating passage space 46 of the stair unit 50 (specifically, its stairway entrance) and the second-floor room U5 in the upper floor unit 20b are continuous.

  The upper support portion 54 has a hanging plate portion 54 b fixed to the outer surface of the web portion 23 a of the floor beam 23 by a bolt 65. Specifically, a through hole portion 23c is formed in the web portion 23a of the floor beam 23 at a position corresponding to the through hole portion 57 of the hanging plate portion 54b, and the through hole portion is formed on the back surface of the web portion 23a. A nut 64 is fixed by welding in correspondence with 23c. Bolts 65 are respectively inserted into the through hole portion 57 of the hanging plate portion 54 b and the through hole portion 23 c of the floor girder 23 (web portion 23 a), and the bolt 65 is fastened to the nut 64. Thereby, the upper side support part 54 is being fixed with respect to the floor beam 23.

  Supplementing with respect to the installation configuration of the stair unit 50, the unit 50 has the upper end supported by the floor beam 23 of the upper floor unit 20 b and the lower end supported by the floor unit 30. The partition walls 38 and 39 on both sides of the unit 50 are not supported. Therefore, it is possible to suppress noise and vibration generated when the stair unit 50 is moved up and down from being transmitted to the living rooms U1 to U4 via the partition walls 38 and 39.

  The stair unit 50 may be disposed in contact with the partition walls 38 and 39 or may be disposed in a non-contact state. However, from the viewpoint of suppressing transmission of noise and vibration generated when the stair unit 50 is raised and lowered, it is desirable to dispose it in a non-contact state.

  The stair unit 50 having the above-described configuration is formed in a size that allows the entrance 42 to be inserted. Therefore, at the time of construction, after each building unit 20 and floor unit 30 are installed on the foundation 11, the stair unit 50 can be carried into the atrium space 17 through the entrance 42. Specifically, at the time of construction, after installing each building unit 20 and the floor unit 30, first, a construction stair unit is carried from the entrance 42 into the atrium space 17 and installed in the space 17. This construction stair unit has substantially the same configuration as the stair unit 50 and is fixed in the same fixed configuration as the stair unit 50. In other words, the upper and lower ends of the construction stair unit are fixed to the floor beams 30 of the floor unit 30 and the upper floor unit 20b, respectively. Then, during the construction, interior construction and the like of each floor portion 14 and 15 are performed while going back and forth between the first floor portion 14 and the second floor portion 15 using this construction stair unit.

  After the interior work or the like is completed, the construction stair unit is removed from the floor beams 30 of the floor unit 30 and the upper floor unit 20b, and the construction stair unit is taken outside through the entrance 42. Thereafter, the stair unit 50 is carried to the atrium space 17 through the entrance 42 and installed in the space 17. Thereby, a series of construction work is completed.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  A unit set 24 that is a combination of the building units 20 on the upper and lower floors is placed apart from each other, thereby forming an atrium space 17 between the separated unit sets 24, and a stair unit that forms a straight staircase in the atrium space 17 50 was installed. In this case, since the long staircase unit 50 can be installed outside the building unit 20, the staircase unit 50 can be installed without being restricted by the beams, columns, or the like of the building unit 20. Thereby, the freedom degree regarding installation of the staircase unit 50 can be raised.

  Further, since the stair unit 50 is installed outside the building unit 20, a halfway wasteful space is not generated in the building unit 20 unlike the case where the stair unit 50 is installed in the building unit 20. . Further, the staircase unit 50 is arranged so that the unit sets 24 in which the longitudinal direction (lifting direction) is separated from each other in a plan view face a direction orthogonal to the unit facing direction. That is, since the staircase unit 50 is arranged so that the width direction thereof faces the unit facing direction, the unit sets 24 are separated from each other according to the width of the staircase unit 50, so that the side of the staircase unit 50 is located in the atrium space 17. It is possible to avoid the generation of wasted space. Thereby, the effective use of the space in a building can be aimed at. Therefore, when installing the staircase unit 50 which consists of a straight staircase, the freedom degree regarding installation of the staircase unit 50 can be raised, and the effective use of the space in a building can be aimed at.

  The lower support portion 55 provided at the lower end portion of the staircase unit 50 is placed on the floor unit 30, and the upper support portion 54 provided at the upper end side is hooked on the floor beam 23 of the upper floor unit 20b. It installed in the state supported. In this case, since it is not necessary to support the stair unit 50 by the partition walls 38 and 39 on the side surface side, vibration and noise when the stair unit 50 is moved up and down are passed through the partition walls 38 and 39, so that the first-floor room U1, It is possible to suppress transmission to U2 and second-floor rooms U3 and U4.

  Further, since the upper support portion 54 is hooked and supported on the floor beam 23 of the upper floor unit 20b, it is not necessary to separately provide a staircase support beam for hooking and supporting the upper support portion 54. For this reason, said effect can be acquired, suppressing complication of a structure. Further, the upper support 54 is hooked and supported on the floor beam 23 of the upper floor unit 20b, so that in the second floor portion 15, the stairway exit of the staircase unit 50 (entrance at the top of the staircase) and the internal space of the upper floor unit 20b (unit Internal space). Therefore, since it is not necessary to provide a floor portion that connects the stairway exit of the staircase unit 50 and the inside of the upper floor unit 20b in the second floor portion 15, the complication of the configuration can be suppressed also in this respect.

  In the second building unit group X2, the unit set 24 (hereinafter referred to as the end unit set 24) located in the middle portion is spaced apart from the unit facing direction of the unit set 24 (hereinafter referred to as the end unit set 24) located at the end. The end unit set 24 is extended to the blow-off space 17 side of the intermediate unit set 24 in the unit facing direction, and the extended length is set to the blow-off space 17. The length in the unit facing direction (that is, the width of the blow-through space 17) was the same. In this case, since the extending part of the end unit set 24 is arranged adjacent to the blow-off space 17 in the direction orthogonal to the unit facing direction, for example, the stairway exit of the staircase unit 50 (the entrance at the top of the staircase) It can be conveniently connected to an extension part (specifically, the second-floor room U5 in the interior). In addition, the length of the extended portion extending from the intermediate unit set 24 in the end unit set 24 is made the same as the width of the blow-off space 17, so that the blow-off space 17 is matched to the width of the stair unit 50. There is also an advantage that it is easy to form in a small width.

  Since the partition walls 38 and 39 are provided on the side portions facing each other in the unit set 24 that is placed apart from each other, the side surfaces of the lift passage space 46 formed by the stair unit 50 are defined by the partition walls 38 and 39, respectively. It is not necessary to provide a stair side wall in the stair unit 50, and the size of the stair unit 50 can be reduced. Thereby, at the time of construction, it is possible to first install each building unit 20 to form the atrium space 17, and then carry the stair unit 50 into the atrium space 17 from the outdoor side through the entrance 42 and the like. In this case, since the stair unit 50 is manufactured in advance at the manufacturing factory and the manufactured stair unit 50 only needs to be installed in the blow-off space 17 at the construction site, the number of construction steps can be reduced.

  Further, since the partition walls 38 and 39 are formed by the partition panel 49 and the partition panel 49 is assembled to the side surface of the building unit 20 at the manufacturing factory, installation work of the partition walls 38 and 39 is not performed at the construction site. It will be over. In other words, in this case, it is not necessary to perform the work of constructing the stair side wall of the stair unit 50 at the construction site. Therefore, the number of man-hours for construction can also be reduced in this respect.

  In addition, since the handrail bar 48 is attached to the partition walls 38a and 39a that define the side surface of the lifting / lowering passage space 46, a handrail for supporting the handrail bar 48 can be eliminated. Thereby, effects, such as reduction of a number of parts and cost reduction, can be acquired.

  The partition wall 41 that partitions the atrium space 17 from the alcove 18 is formed with an entrance 42 that allows the spaces 17 and 18 to communicate with each other, and the stair unit 50 is formed so as to be inserted into the entrance 42. As a result, the staircase unit 50 is manufactured in advance at the manufacturing factory, and at the time of construction, the building unit 20 is first installed to form the atrium space 17, and then the staircase unit 50 is carried into the atrium space 17 through the entrance 42. It becomes possible to install. Thus, it is not necessary to assemble the stair unit 50 at the construction site (blow-through space 17) or to disassemble the unit 50 once when the stair unit 50 is carried into the blow-off space 17, and the construction man-hours can be reduced. Reduction can be achieved.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) The adjacent unit sets 24 may be placed apart from each other with their girder surfaces (side surfaces on the long side) facing each other, and the stair unit 50 may be installed in the atrium space formed by the separation. Further, the adjacent unit sets 24 are separated from each other in such a direction that the girder surface of one unit set 24 and the end surface (side surface on the short side) of the other unit set 24 face each other, and are formed by the separation. The staircase unit 50 may be installed in the atrium space.

  (2) In the above embodiment, the upper support portion 54 of the staircase unit 50 is hooked and supported on the floor large beam 23 of the upper floor unit 20b, but this is changed and the upper support portion 54 is opposed to the same floor large beam 23. You may hook and support on the ceiling beam 22 of the lower floor unit 20a arrange | positioned. In this case, the upper support portion 54 may be arranged in the staircase unit 50 according to the height position of the ceiling beam 22 of the lower floor unit 20a.

  Further, the upper support portion 54 does not necessarily have to be hooked and supported by the large beams (the ceiling large beam 22 and the floor large beam 23) of the building unit 20. For example, the stair support beam is bridged between the unit sets 24 separated from each other at the boundary height (inter-floor portion) between the first floor portion 14 and the second floor portion 15, and the upper support portion 54 is hooked and supported on the stair support beam. You may let them. The stair support beam is formed in a long shape by the same channel steel as that of the ceiling beam 22 and the floor beam 23, for example, between the floor beams 23 of the upper floor unit 20b of each unit set 24 separated from each other, or the lower floor unit. It is bridged between ceiling beams 22 of 20a. Even in such a configuration, since it is not necessary to support the stair unit 50 by the partition walls 38 and 39 on the side surface side, noise and vibration when the stair unit 50 is moved up and down are passed through the partition walls 38 and 39. Transmission to U4 can be suppressed. In this case, since the installation position of the stair support beam can be adjusted in a direction perpendicular to the unit facing direction, the installation position of the stair unit 50 can be freely set in the same direction. For this reason, a freedom degree can be raised regarding the installation plan of stairs.

  (3) In the above embodiment, the floor unit 30 is installed in the atrium space 17 and the lower support portion 55 of the staircase unit 50 is placed on the floor unit 30, but the floor unit 30 is installed in the atrium space 17. Alternatively, the lower support portion 55 of the stair unit 50 may be placed on the foundation 11. In this case, the space below the stair unit 50 can be used as a dirt space. In addition, what is necessary is just to install between the lower floor unit 20a in which the floor surface material was left | separated between the stairway entrance (stairs lower end part) of the staircase unit 50, and the entrance space 43.

  (4) In the above embodiment, the stair unit 50 is formed so as to be able to be inserted into the entrance 42, but the stair unit 50 is formed so as to be able to be inserted into a building opening other than the entrance 42 (an opening communicating indoors and outdoors). May be. For example, it is conceivable to form the stair unit 50 so that it can be inserted into a sweep window as a building opening.

  (5) In the above-described embodiment, the present invention is applied to the stair unit 50 (stair section) including a straight staircase. However, the present invention is applied to any stair section that is long and rectangular in plan view. Can do. For example, the staircase portion 70 shown in FIG. 10 is a staircase whose vertical direction is bent by arranging a fan-shaped step board 71 on its upper end side, but is generally long and rectangular in plan view. It has a shape. The present invention can also be applied to the staircase portion 70.

  (6) The lower floor unit 20a may be arranged on the entire circumference of the atrium space 17 in the first floor portion 14, and the atrium space 17 may be surrounded by the lower floor units 20a. For example, in the above-described embodiment, either one of the lower floor units 20a placed apart from each other with the alcove 18 therebetween is constituted by the long building unit 20Y, and the lower floor unit 20a extends over the area where the alcove 18 is formed. It is conceivable to arrange them.

  (7) The construction stair unit may be installed by simply placing the lower end portion thereof on the floor unit 30 and hooking the upper end side thereof on the floor beam 23. That is, the construction stair unit may be installed in a state where it is not fixed to the floor unit 30 and the floor girder 23 with bolts or the like. For example, a projecting pin projecting upward is provided on the upper surface of the floor beam 23 (specifically, the upper flange portion 23b) of the upper floor unit 20b, and the projecting stair unit is inserted through the projecting pin into the uppermost tread. It is conceivable that the construction stair unit is hooked and supported on the floor girder 23 by providing a hole and inserting a projecting pin through the insertion hole. In this case, the construction stair unit can be easily installed, and the number of construction steps can be reduced.

  In this case, the projecting pin may be used when the stair unit 50 is installed. For example, it is conceivable that an insertion hole portion is provided in the contact plate portion 54a of the upper support portion 54, and a protruding pin is inserted into the insertion hole portion. In this case, when the hanging plate portion 54b is bolted to the web portion 23a of the floor beam 23 with the contact plate portion 54a of the upper support portion 54 placed on the floor beam 23, the upper support portion 54 (contact plate) It is not necessary to hold the part 54a) by hand so that the part 54a does not fall off the floor beam 23, and workability can be improved when performing the fixing work. In this case, the protruding pin corresponds to a connecting means for connecting the construction stair unit and the stair unit 50 to the floor beam 23.

  (8) In the above embodiment, the present invention is applied to the staircase portion that connects between the first floor portion 14 and the second floor portion 15. For example, in a three-story building, the second floor portion and the third floor portion are connected. The present invention may be applied to staircases.

  DESCRIPTION OF SYMBOLS 10 ... Building, 14 ... First floor part as lower floor part, 15 ... Second floor part as upper floor part, 17 ... Atrium space, 20 ... Building unit, 20a ... Lower floor unit, 20b ... Upper floor unit, 22 ... Ceiling Large beam, 23 ... Floor beam as stair support beam, 24 ... Unit set, 30 ... Floor unit, 38, 39 ... Partition wall, 42 ... Entrance door as building opening, 50 ... Stair unit as staircase, 54 ... Upper support portion as a hook portion, 55... Lower support portion as a placement portion.

Claims (5)

A unit type building having a plurality of building units formed by connecting beams and columns, and having a lower floor and an upper floor adjacent to each other in the vertical direction,
The Rukoto which is a combination unit set of upper and lower stories of the building unit is placed apart at a distance from one another, beams and columns in each of said on-floor portion and the lower floor portion therebetween Separated placed by units set A space portion where no building unit is formed is formed, and a space between the lower floor portion and the upper floor portion is formed by the space portions of the upper and lower floors,
The stairwell space is provided with a staircase section that connects the lower floor section and the upper floor section,
The stepped portion is long and rectangular in plan view, and the longitudinal direction thereof is arranged in a direction orthogonal to the unit facing direction in which the separated unit sets face each other. Building characterized by. A unit type building having a plurality of building units formed by connecting beams and columns, and having a lower floor and an upper floor adjacent to each other in the vertical direction,
Unit sets that are combinations of upper and lower floor building units are spaced apart from each other, and an atrium space extending between the lower floor portion and the upper floor portion is formed between the separated unit sets. And
The stairwell space is provided with a staircase section that connects the lower floor section and the upper floor section,
The stepped portion has a long and rectangular shape in plan view, and its longitudinal direction is arranged in a direction perpendicular to the unit facing direction where the separated unit sets are opposed to each other ,
The unit set is further provided adjacent to the atrium space in a direction orthogonal to the unit facing direction,
One of the upper floor beams of the upper floor unit and the lower floor ceiling beam of the upper floor unit adjacent to each other in the inter-floor portion of the unit set is provided so as to straddle between the unit sets that are separated from each other. The staircase support beam is
The step portion has a placement portion placed on a floor or a foundation at a lower end portion thereof, and has a hook portion hooked and supported by the stair support beam on an upper end side thereof. building. A unit type building having a plurality of building units formed by connecting beams and columns, and having a lower floor and an upper floor adjacent to each other in the vertical direction,
Unit sets that are combinations of upper and lower floor building units are spaced apart from each other, and an atrium space extending between the lower floor portion and the upper floor portion is formed between the separated unit sets. And
The stairwell space is provided with a staircase section that connects the lower floor section and the upper floor section,
The stepped portion has a long and rectangular shape in plan view, and its longitudinal direction is arranged in a direction perpendicular to the unit facing direction where the separated unit sets are opposed to each other ,
A second unit set as the unit set is further provided adjacent to a direction orthogonal to the unit facing direction with respect to the first unit set which is one of the unit sets separated from each other,
The second unit set has a length in the unit facing direction that is longer than that of the first unit set, and extends in the blow-off space side of the first unit set in the unit facing direction. Have
The extension length of the extension part is the same as the length of the atrium space in the unit facing direction . Each of the side parts facing each other in the separated unit set is provided with a partition wall,
The building according to any one of claims 1 to 3 , wherein a side surface of an elevating passage space formed by the stepped portion is defined by each of the partition walls. The atrium space is adjacent to the semi-outdoor space or the outdoor space with a partition wall in a direction orthogonal to the unit facing direction,
The partition wall is provided with a building opening for communicating the atrium space with the semi-outdoor space or the outdoor space,
The building according to any one of claims 1 to 4 , wherein the stepped portion is formed so as to be able to be inserted into the building opening.

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