JP2012229603A - Ceiling support structure for unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve site constructiveness of a unit building by easily matching a hole of a horizontal connection part of an upper metal fitting mounted in a structure member of an upper building unit and a hole of a horizontal connection part of a lower metal fitting mounted on a ceiling panel of a lower building unit when the upper and lower building units are mounted vertically on a site installation stage, in a ceiling support structure for the unit building.SOLUTION: In a ceiling support structure for a unit building 1 in which a horizontal connection part 62 of an upper metal fitting 60 previously mounted to a floor panel 20 of an upper building unit 10B and a horizontal connection part 52 of a lower metal fitting 50 previously mounted to a ceiling panel 40 of a lower building unit 10A are connected by a bolt 70, holes provided in the horizontal connection parts 52 and 62 of both the metal fittings 50 and 60 are made into long holes 53 and 63 and in accordance with the state of vertically overlapping both the metal fittings, the long holes 53 and 63 of both the metal fittings 50 and 60 are disposed while crossing each other in a length direction. The bolt 70 is then inserted through a crossing part of the long holes 53 and 63.

Description

  The present invention relates to a ceiling support structure for a unit building.

  As a support structure for the ceiling panel of the lower building unit constituting the unit building, as described in Patent Document 1, a horizontal connecting portion of the upper metal fitting previously attached to the floor panel of the upper building unit and a ceiling panel of the lower building unit are previously provided. The horizontal joints of the lower metal fittings that are installed overlap each other at the site installation stage of both building units, and are connected by bolts that are inserted through holes provided in the horizontal joints of both metal fittings. There is.

  In particular, in a rectangular parallelepiped lower building unit, there is no wall panel corresponding to the side edge of one side of the ceiling panel, and when the ceiling panel is abutted against the ceiling panel of another adjacent lower building unit, As the support structure of the ceiling panel, the above-described support structure described in Patent Document 1 is employed.

  That is, the lower metal fitting is previously attached to the side edge of the above-mentioned side of the ceiling panel in the lower building unit at the factory, and the floor panel of the upper building unit corresponding to the side edge of the ceiling panel of the lower building unit up and down. Attach the top bracket to the side joist in advance at the factory. Then, when the upper building unit is mounted on the lower building unit at the on-site installation stage of both building units, the horizontal connection portion of the upper metal fitting and the horizontal connection portion of the lower metal fitting that are arranged to overlap each other are connected to the holes. It connects with the bolt inserted in. Thereby, in the ceiling panel of a lower building unit, the side field edge of the side which does not have a corresponding support wall is suspended and supported by the side joist of the floor panel in an upper building unit, and the drooping is prevented.

JP2001-193166

  However, in the unit building described in Patent Document 1, even if the processing dimensional accuracy of the upper metal fitting and the lower metal fitting is secured at the factory production stage, the mounting work of the upper metal fitting to the floor panel of the upper building unit, The work of attaching the lower bracket to the ceiling panel of the lower building unit is performed separately from each other, and the relative mounting position accuracy of both the brackets is not sufficiently ensured. In addition, it is difficult to ensure the installation position accuracy of the upper building unit relative to the lower building unit at the site installation stage.

  Therefore, when the upper and lower building units are mounted on the upper and lower sides at the site installation stage, it is impossible to ensure the overlapping position accuracy of the horizontal connecting portion of the upper metal fitting and the horizontal connecting portion of the lower metal fitting with high accuracy. It is difficult to match the holes provided in the horizontal connecting portions of both metal fittings, and there is a risk that the workability of inserting bolts into those holes will be impaired, and the site workability of the unit building may be impaired.

  The problem of the present invention is that when the upper and lower building units are mounted up and down at the site installation stage in the ceiling support structure of the unit building, the hole of the horizontal connection part of the upper bracket attached to the structural material of the upper building unit, and the lower part The purpose is to easily match the hole of the horizontal connection part of the lower bracket attached to the ceiling panel of the building unit to improve the workability of the unit building.

  The invention according to claim 1 is characterized in that the horizontal connecting portion of the upper metal fitting previously attached to the structural material of the upper building unit and the horizontal connecting portion of the lower metal fitting previously attached to the ceiling panel of the lower building unit are both of these building units. In the ceiling support structure of the unit building that is overlapped vertically at the site installation stage and is connected by a bolt inserted into the hole provided in the horizontal connection part of both the metal fittings, provided in the horizontal connection part of the both metal fittings The hole to be formed is a long hole, and the longitudinal directions of the long holes of both metal fittings are arranged so as to intersect each other with the upper and lower overlapping positions of both metal fittings, and the bolts are inserted through the intersections of these long holes. It is.

  According to a second aspect of the present invention, in the first aspect of the invention, the upper bracket projects a horizontal connecting portion in a horizontal direction from an attachment portion to the structural material of the upper building unit, and the lower bracket is a ceiling of the lower building unit. The horizontal connecting part protrudes horizontally from the mounting part on the side edge of the panel, and the protruding length of the horizontal connecting part of the upper bracket is set longer than the protruding length of the horizontal connecting part of the lower bracket Is.

(Claim 1)
(a) The hole provided in the horizontal connection part of both the upper metal fitting attached to the structural material such as the floor panel of the upper building unit and the lower metal fitting attached to the ceiling panel of the lower building unit is elongated. . And the longitudinal direction of the long hole of both metal fittings mutually cross-arranges with the upper and lower building units mounted up and down in the field installation stage, and the upper and lower overlapping arrangement state of both metal fittings.

  Therefore, even if the relative mounting position accuracy of the brackets to the structural material such as the floor panel of the upper building unit and the ceiling panel of the lower building unit is not sufficiently secured, the upper building unit is not secured to the lower building unit. Even if the installation position accuracy is not sufficiently ensured, the long holes provided in the horizontal connecting portions of both metal fittings intersect each other, and the long holes can be easily matched at the intersecting portions. Bolts can be inserted into holes that match at the intersections of these long holes, and the horizontal connecting portions of both metal fittings can be connected.

  Therefore, in the lower building unit, when there is no wall panel corresponding to the side edge of one side of the ceiling panel and the ceiling panel is faced to the ceiling panel of another lower building unit adjacent to the lower building unit, Attach the lower bracket to the side edge of the above-mentioned one side of the ceiling panel in advance at the factory, and correspond to the side edge of the ceiling panel of this lower building unit up and down, for example, the floor joist of the floor panel in the upper building unit in advance. Attach the top bracket. Thereby, the side edge of one side without the corresponding support wall in the ceiling panel is suspended and supported on the side joist of the floor panel in the upper building unit, and the drooping can be prevented.

(Claim 2)
(b) In the upper building unit of (a) described above, for example, there is no wall panel corresponding to the side joist on one side of the floor panel, an upper metal fitting is attached to the side joist, and the side edge of the ceiling panel of the lower building unit is When hanging and supporting, when the floor joist length (girder length) of the floor panel of the upper building unit is relatively large, two or more lumbars are used as the side joist to suppress the bending of the floor panel. A wide-width one arranged may be used. By this, when the width of the side joists of the floor panel in the upper building unit differs widely, between the upper metal fitting of the upper building unit and the lower metal fitting of the lower building unit that are arranged vertically in the above (a), The relative position of the horizontal connecting part of the upper bracket attached to the side joist of the floor panel in the upper building unit relative to the horizontal connecting part of the lower bracket attached to the side edge of the ceiling panel in the lower building unit is the upper bracket. It changes in the protruding direction of the horizontal connecting part. That is, when the side joists of the floor panel in the upper building unit are wide, the protruding end of the horizontal connecting portion of the upper metal fitting is positioned ahead of the protruding end of the horizontal connecting portion of the lower metal fitting.

  In the present invention, in such a case, the protruding length of the horizontal connecting portion of the upper metal fitting is set longer than the protruding length of the horizontal connecting portion of the lower metal fitting. Thereby, even if the width of the side joist of the floor panel in the upper building unit is narrow or wide, the long holes of both horizontal connecting portions of the upper metal fitting and the lower metal fitting can be reliably crossed using the same upper metal fitting.

FIG. 1 is a schematic diagram showing an upper building unit and a lower building unit constituting a unit building. FIG. 2 is a sectional view taken along line II-II in FIG. 3 is a cross-sectional view showing the ceiling support structure of FIG. FIG. 4 is a plan view of FIG. FIG. 5 is a side view of FIG. FIG. 6 is a cross-sectional view showing an application example of the ceiling support structure to a wide joist. FIG. 7 is a plan view of FIG. FIG. 8 shows another example of the ceiling support structure of the lower building unit by the upper building unit, (A) is a schematic diagram showing the upper floor layout, and (B) is an exploded perspective view showing the ceiling support structure. FIG. 9 shows another example of the ceiling support structure of the lower building unit by the upper building unit, (A) is a schematic diagram showing the upper floor layout, and (B) is an exploded perspective view showing the ceiling support structure. FIG. 10 shows another example of the ceiling support structure of the lower building unit by the upper building unit, (A) is a schematic diagram showing the upper floor layout, and (B) is an exploded perspective view showing the ceiling support structure. 11 is a cross-sectional view showing the ceiling support structure of FIG.

  FIG. 1 shows a unit building 1 to which the present invention is applied, which is constructed by mounting an upper building unit 10B on a lower building unit 10A. The lower building unit 10 </ b> A and the upper building unit 10 </ b> B can have substantially the same configuration, and both will be described below as the building unit 10.

  As shown in FIGS. 1 and 2, the building unit 10 includes a floor panel 20 and a girder wall panel 31 erected at one of the center of three outer edges of the floor panel 20 that intersect each other and two on both sides. And a ceiling panel 40 fixed to the uppermost end of the end wall panel 32.

  The floor panel 20 is composed of side joists 22 and 23 facing the floor frame assembly 21, end joists (not shown) spanned between both ends of the side joists 22 and 23, and the like. A lower frame member 24 is attached, and a floor member 25 is attached to the upper surface of the floor frame assembly 21.

  The girder wall panel 31 includes a wall frame 31A composed of an upper frame 31B, a lower frame 31C, and a vertical frame 31D, and wall surfaces 31E and 31F are attached to the inner and outer surfaces of the wall frame 31A. The end wall panel 32 is configured similarly to the girder wall panel 31.

  The ceiling panel 40 is composed of side field edges 42 and 43 facing the ceiling frame 41, end field edges (not shown) spanned between both ends of the side field edges 42 and 43, a receiving frame 44, and the like. A ceiling surface material 45 is attached to the lower surface of the ceiling frame assembly 41.

  In the building unit 10, the ceiling panel 40 has a wall surface on the side surface of the upper frame member 31 </ b> B of the girder wall panel 31 with one of the side field edges 42, 43, corresponding to the girder wall panel 31, with nails 46. It fixes through the material 31E. Similarly, the edge field edges on both sides of the ceiling panel 40 are fixed to the end wall panel 32 with nails.

  At this time, the other side field edge 43 of the side field edges 42 and 43 facing the ceiling panel 40 does not have a corresponding girder wall panel, and the ceiling panel 40 of another building unit 10 adjacent to the building unit 10. Constitutes the outer edge to be abutted against.

  However, in the unit building 1, when the upper building unit 10B is mounted on the lower building unit 10A, the side edge 43 on one side having no corresponding supporting wall in the ceiling panel 40 of the lower building unit 10A is A ceiling support structure that suspends and supports the side joists 23 of the floor panel 20 in the building unit 10B and prevents the drooping is provided as follows.

  (1) When the upper building unit 10B is to be mounted on the lower building unit 10A, the side edge 43 of the ceiling panel 40 of the lower building unit 10A as shown in FIGS. The vertical mounting portion 51 of the L-shaped lower bracket 50 is screwed in advance, and the vertical mounting portion 61 of the L-shaped upper bracket 60 is screwed in advance to the side joists 23 of the floor panel 20 of the upper building unit 10B.

  The lower metal fitting 50 protrudes in the horizontal direction from the vertical attachment portion 51 to the side edge 43 of the ceiling panel 40 of the lower building unit 10 </ b> A in the horizontal direction, and is orthogonal to the protruding direction at the center of the width of the horizontal connection portion 52. A long hole 53 extending along X is provided (FIG. 4).

  The upper metal fitting 60 protrudes in the horizontal direction from the vertical attachment portion 61 to the side joist 23 of the floor panel 20 of the upper building unit 10B in the horizontal direction, and extends along the protruding direction Y at the center of the width of the horizontal connection portion 62. A long hole 63 is provided (FIG. 4).

  (2) At the on-site installation stage of both building units 10A and 10B, the horizontal connecting portion 62 of the upper metal fitting 60 and the horizontal connecting portion 52 of the lower metal fitting 50 described above (1) are arranged so as to overlap each other. , 60 are inserted into the long holes 53, 63 provided in the horizontal connecting portions 52, 62, respectively. The bolt 70 is inserted from the long hole 63 of the upper metal fitting 60 into the long hole 53 of the lower metal fitting 50, and a nut 71 and a locking nut 72 are screwed onto the insertion end thereof, so The horizontal connection part 62 of the metal fitting 60 is connected.

  At this time, the horizontal connecting portions 52 and 62 of the metal fittings 50 and 60 are provided with the long holes 53 and 63 as described above. As a result, the longitudinal directions X and Y of the long holes 53 and 63 of the metal fittings 50 and 60 are crossed in a cross shape (orthogonal in this embodiment) in an overlapping arrangement state of the metal fittings 50 and 60 above and below, Bolts 70 are inserted through the intersections of the long holes 53 and 63.

  Here, the protruding length L1 of the horizontal connecting portion 62 of the upper metal fitting 60 is set longer than the protruding length L2 of the horizontal connecting portion 52 of the lower metal fitting 50 (FIGS. 3 and 6). In the upper building unit 10B, when the width W1 of the side joist 23 of the floor panel 20 is narrow as shown in FIGS. 3 and 4, the elongated hole 63 of the upper metal fitting 60 is formed at the front end side in the protruding direction (from the vertical mounting portion 61). An intersection with the elongated hole 53 of the lower metal fitting 50 is formed on the far side. On the other hand, when the length (girder length) of the side joist 23 in the floor panel 20 of the upper building unit 10B is relatively large, two side joists 23 are used as the side joist 23 in order to suppress the bending of the floor panel 20. When the width W2 of the side joist 23 of the floor panel 20 is wide as shown in FIG. 6 and FIG. 7, the long hole 63 of the upper metal fitting 60 has a base end side in the protruding direction (vertical). A crossing portion with the elongated hole 53 of the lower metal fitting 50 is formed on the side close to the attachment portion 61.

  In the unit building 1, when the building unit 10 and another building unit 10 are joined, the other building unit 10 is also connected to the other building unit 10 as shown in FIG. The above-described ceiling support structure (a structure in which the lower metal fitting 50 is attached to the side edge 43 of the ceiling panel 40 of the lower building unit 10A and the upper metal fitting 60 is attached to the floor joist 23 of the floor panel 20 of the upper building unit 10B) is employed.

  And between the adjacent lower building units 10A and 10A, the lower surface of the side field edge 43 of the ceiling panel 40 of one lower building unit 10A and the side field edge 43 of the ceiling panel 40 of the other lower building unit 10A. Each of both end portions of the ceiling surface material 45A is fixed by nailing to the lower surface.

  At this time, the horizontal connection part of the lower metal fitting 50 provided in the side field edge 43 of each ceiling panel 40 so that the ceiling surface material 45 with which the ceiling panel 40 of both lower building units 10A is not uneven | corrugated mutually. The bolts 70, nuts 71, and locking nuts 72 inserted through the long holes 53 of 52 are adjusted by screwing to adjust the level of each ceiling member 45.

Therefore, according to the present Example, there exist the following effects.
(a) Provided in the horizontal connection parts 52 and 62 of both the metal fittings 50 and 60 of the upper metal fitting 60 attached to the floor panel 20 of the upper building unit 10B and the lower metal fitting 50 attached to the ceiling panel 40 of the lower building unit 10A. The holes to be formed are elongated holes 53 and 63. In the state where the upper and lower building units 10A and 10B are mounted on the upper and lower sides at the site installation stage, the longitudinal directions of the long holes 53 and 63 of the metal fittings 50 and 60 cross each other. Is done.

  Therefore, even if the relative mounting position accuracy of the metal fittings 50 and 60 with respect to the floor panel 20 of the upper building unit 10B and the ceiling panel 40 of the lower building unit 10A is not sufficiently ensured, Even if the installation position accuracy of the upper building unit 10B is not sufficiently ensured, the long holes 53 and 63 provided in the horizontal connecting portions 52 and 62 of the metal fittings 50 and 60 intersect each other, and at the intersection, they The long holes 53 and 63 are easily matched. Bolts 70 can be inserted into holes that match at the intersections of the long holes 53 and 63 to connect the horizontal connecting portions 52 and 62 of the metal fittings 50 and 60.

  Accordingly, in the lower building unit 10A, there is no wall panel corresponding to the side edge 43 on one side of the ceiling panel 40, and the ceiling panel 40 is abutted against the ceiling panel 40 of another lower building unit 10A adjacent to the ceiling panel 40. In addition, the lower metal fitting 50 is previously attached to the side edge 43 of the above-mentioned one side of the ceiling panel 40 in the lower building unit 10A at the factory, and the upper side corresponds to the side edge 43 of the ceiling panel 40 of the lower building unit 10A. The upper metal fitting 60 is previously attached to the side joist 23 of the floor panel 20 in the upper building unit 10B at the factory. Thereby, the side field edge 43 on one side having no corresponding support wall in the ceiling panel 40 of the lower building unit 10A is suspended and supported on the side joists 23 of the floor panel 20 in the upper building unit 10B, thereby preventing the drooping. it can.

  (b) In the upper building unit 10B of (a) described above, there is no wall panel corresponding to the side joist 23 on one side of the floor panel 20, the upper metal fitting 60 is attached to the side joist 23, and the ceiling panel 40 of the lower building unit 10A. When the side edge 43 is suspended and supported, the length (girder length) of the side joist 23 in the floor panel 20 of the upper building unit 10B is relatively large, and the bending of the floor panel 20 is suppressed. In addition, the side joist 23 may have a wide width in which two or more lumbars are arranged. As a result, when the width of the side joist 23 differs widely in the floor panel 20 of the upper building unit 10B, the upper metal fitting 60 and the lower building unit 10A below the upper building unit 10B which are arranged vertically in the above-described (a). Attached to the side joist 23 of the floor panel 20 in the upper building unit 10B with respect to the horizontal connection portion 52 of the lower metal fitting 50 attached to the side edge 43 of the ceiling panel 40 in the lower building unit 10A. Further, the relative position formed by the horizontal connecting portion of the upper metal fitting 60 changes in the protruding direction of the horizontal connecting portion 62 of the upper metal fitting 60. That is, when the side joists 23 of the floor panel 20 in the upper building unit 10B are wide, the protruding end of the horizontal connecting portion 62 of the upper metal fitting 60 is ahead of the protruding end of the horizontal connecting portion 52 of the lower metal fitting 50 in the protruding direction. It will be what is located.

  In this embodiment, in such a case, the protruding length of the horizontal connecting portion 62 of the upper metal fitting 60 is set longer than the protruding length of the horizontal connecting portion 52 of the lower metal fitting 50. Thereby, even if the width of the side joist 23 of the floor panel 20 in the upper building unit 10 </ b> B is narrow or wide, both the horizontal connection parts 52, 62 of the upper metal fitting 60 and the lower metal fitting 50 are used while using the same upper metal fitting 60. The long holes 53 and 63 can be reliably crossed.

  The unit building 1 shown in FIG. 8 has a room unit 101 set back and a balcony unit 102 in front of the room unit 101. The living room unit 101 is the upper building unit 100B of the present invention, and the upper building unit 100B is configured in the same manner as the upper building unit 10B of the above embodiment. That is, a side field edge 43 on one side having no corresponding support wall on the side panel 23 of the floor panel 20 in the upper building unit 100B and having the corresponding support wall in the ceiling panel 40 of the lower building unit 10A as in the above embodiment is as follows. It is suspended and supported.

  (1) At the factory production stage of the lower building unit 10A, the lower metal fitting 110 is fitted and fixed between the side field edge 43 of the ceiling panel 40 of the lower building unit 10A and the other side field edge 43 opposite thereto. To do.

  In the lower metal fitting 110, the vertical mounting portions 111 on both sides are screwed to the side surfaces of the opposing side edges 43, 43 of the ceiling panel 40, and the horizontal connecting portion 112 is extended in the horizontal direction between the upper ends of the vertical mounting portions 111. And the long hole 113 extended along the direction X along the extension direction in the width center of the horizontal connection part 112 is provided. Reinforcing ribs 112 </ b> A are bent at both side edges in the width direction of the horizontal connecting portion 112.

  (2) At the factory production stage of the upper building unit 100B, the L-shaped upper bracket 120 is fixed to the side joists 23 of the floor panel 20 of the upper building unit 100B. The side joists 23 of the floor panel 20 are arranged orthogonally to the side field edges 43 of the ceiling panel 40.

  In the upper metal fitting 120, the vertical attachment portion 121 is screwed to the side face of the side joist 23 of the floor panel 20, and the horizontal connection portion 122 protrudes in the horizontal direction from the lower end of the vertical attachment portion 121, so A long hole 123 extending along the protruding direction Y is provided. Reinforcing ribs 122 </ b> A are bent at both side edges in the width direction of the horizontal connecting portion 122.

  (3) At the on-site installation stage of both building units 10A and 110B, the horizontal connection portion 112 of the lower metal fitting 110 described above and the horizontal connection portion 122 of the upper metal fitting 120 described above (2) overlap each other. The bolts 130 are inserted into the long holes 113 and 123 provided in the horizontal connecting portions 112 and 122 of both the metal fittings 110 and 120, respectively. The bolt 130 is inserted from the long hole 123 of the upper metal fitting 120 into the long hole 113 of the lower metal fitting 110, and a nut 131 is screwed into the insertion end thereof, whereby the horizontal connection portion 112 of the lower metal fitting 110 and the horizontal connection of the upper metal fitting 120 are connected. The part 122 is connected. Reference numeral 132 denotes a washer seated on the upper surface of the horizontal connecting portion 122, and 133 denotes a washer seated on the lower surface of the horizontal connecting portion 112.

At this time, the horizontal connecting portions 112 and 122 of the metal fittings 110 and 120 have the long holes 113 and 123 as described above. As a result, the longitudinal directions X and Y of the long holes 113 and 123 of the metal fittings 110 and 120 are crossed in a cross shape (orthogonal in this embodiment) in an overlapping arrangement state of the metal fittings 110 and 120. Bolts 130 are inserted through the intersections of the long holes 113 and 123.
According to the present embodiment, substantially the same operational effects as the embodiment shown in FIG.

  The unit building 1 shown in FIG. 9 has a room unit 201 set back and a balcony unit 202 in front of the room unit 201. The balcony unit 202 is the upper building unit 200 </ b> B of the present invention, and the floor panel 203 of the upper building unit 200 </ b> B includes a side joist 205 that forms the floor frame assembly 204. That is, a side field edge 43 on one side having no corresponding supporting wall in the ceiling panel 40 of the lower building unit 10A similar to that in the above-described embodiment is provided on the side joist 205 of the floor panel 203 in the upper building unit 200B as follows. It is suspended and supported.

  (1) At the factory production stage of the lower building unit 10A, the lower metal fitting 210 is fitted and fixed between the side field edge 43 of the ceiling panel 40 of the lower building unit 10A and the other side field edge 43 opposite thereto. To do.

  In the lower metal fitting 210, the vertical mounting portions 211 on both sides are screwed to the side surfaces of the opposite side edges 43, 43 of the ceiling panel 40, and a horizontal connection portion 212 is extended in the horizontal direction between the upper ends of both vertical mounting portions 211. And the long hole 213 extended along the direction X along the extension direction in the width center of the horizontal connection part 212 is provided. Reinforcing ribs 212 </ b> A are bent at both side edges in the width direction of the horizontal connecting portion 212.

  (2) At the factory production stage of the upper building unit 200B, the upper metal fitting 220 is fitted and fixed between the side joists 205 and 205 of the floor panel 203 of the upper building unit 200B. The side joists 205 of the floor panel 203 are arranged in parallel to the side field edges 43 of the ceiling panel 40.

  The upper metal fitting 220 has a vertical mounting portion 221 on both sides of the side joists 205, 205 of the floor panel 203 screwed to each other, and a horizontal connecting portion 222 extending horizontally between the upper ends of the two vertical mounting portions 221. In addition, a long hole 223 extending along the direction Y orthogonal to the extending direction is provided at the center of the width of the horizontal connecting portion 222. Reinforcing ribs 222A are bent at both side edges in the width direction of the horizontal connecting portion 222.

  (3) At the on-site installation stage of both building units 10A and 200B, the horizontal connection portion 212 of the lower metal fitting 210 described above (1) and the horizontal connection portion 222 of the upper metal fitting 220 described above (2) overlap each other. The bolts 230 are inserted into the long holes 213 and 223 provided in the horizontal connecting portions 212 and 222 of both the metal fittings 210 and 220, respectively. The bolt 230 is inserted from the long hole 223 of the upper metal fitting 220 into the long hole 213 of the lower metal fitting 210, and the nut 231 is screwed to the insertion end thereof, whereby the horizontal connection portion 212 of the lower metal fitting 210 and the horizontal connection of the upper metal fitting 220 are connected. The unit 222 is connected. Reference numeral 232 denotes a washer seated on the upper surface of the horizontal connecting portion 222, and reference numeral 233 denotes a washer seated on the lower surface of the horizontal connecting portion 212.

At this time, the horizontal connecting portions 212 and 222 of the metal fittings 210 and 220 are provided with the long holes 213 and 223 as described above. As a result, the longitudinal directions X and Y of the long holes 213 and 223 of the metal fittings 210 and 220 are arranged in a cross shape (orthogonal in this embodiment) in an overlapping arrangement state of the metal fittings 210 and 220. Bolts 230 are inserted through the intersections of the long holes 213 and 223.
According to the present embodiment, substantially the same operational effects as the embodiment shown in FIG.

  The unit building 1 shown in FIGS. 10 and 11 has a roof unit 301 on the lower building unit 10A. Then, the roof unit 301 is the upper building unit 300B of the present invention, and the support wall corresponding to the lower chord member 303 of the roof truss 302 in the upper building unit 300B in the ceiling panel 40 of the lower building unit 10A similar to the above embodiment. A side edge 43 having no side is suspended and supported as follows.

  (1) At the factory production stage of the lower building unit 10A, the L-shaped lower bracket 310 is fixed to the side field edge 43 of the ceiling panel 40 of the lower building unit 10A.

  In the lower metal fitting 310, a vertical attachment portion 311 is screwed to the side surface of the side edge 43 of the ceiling panel 40, and the horizontal connection portion 312 is protruded in the horizontal direction from the upper end of the vertical attachment portion 311. And a long hole 313 extending along a direction X orthogonal to the protruding direction.

  (2) At the factory production stage of the upper building unit 300B, the L-shaped upper bracket 320 is fixed to the lower chord member 303 of the roof unit 301 of the upper building unit 300B. It is assumed that the lower chord material 303 of the roof unit 301 is arranged in parallel to the side field edge 43 of the ceiling panel 40. And the lower part along the height direction in which the adjacent lower chord members 303 and 303 of the adjacent roof units 301 and 301 face each other is within the interval between the opposite side field edges 43 and 43 of the adjacent lower building units 10A and 10A. It is arranged in.

  In the upper metal 320, the vertical attachment portion 321 is screwed to the side surface of the lower chord member 303 of the roof unit 301, the horizontal connection portion 322 protrudes in the horizontal direction from the lower end of the vertical attachment portion 321, and at the center of the width of the horizontal connection portion 322. A long hole 323 extending along the protruding direction Y is provided. Reinforcing ribs 322A are bent at both side edges in the width direction of the horizontal connecting portion 322.

  (3) At the on-site installation stage of both building units 10A and 300B, the horizontal connecting portion 312 of the lower metal fitting 310 described in (1) above and the horizontal connecting portion 322 of the upper metal fitting 320 described in (2) above and below overlap each other. The bolts 330 are inserted into the elongated holes 313 and 323 provided in the horizontal connecting portions 312 and 322 of the metal fittings 310 and 320, respectively. The bolt 330 is inserted from the elongated hole 323 of the upper bracket 320 into the elongated hole 313 of the lower bracket 310, and a nut 331 is screwed to the insertion end thereof, whereby the horizontal connection portion 312 of the lower bracket 310 and the horizontal of the upper bracket 320 are fixed. The connection part 322 is connected. Reference numeral 332 denotes a washer seated on the upper surface of the horizontal connecting portion 322, and reference numeral 333 denotes a washer seated on the lower surface of the horizontal connecting portion 312.

At this time, the horizontal connecting portions 312 and 322 of the metal fittings 310 and 320 are provided with the long holes 313 and 323 as described above. Thereby, the longitudinal directions X and Y of the long holes 313 and 323 of the metal fittings 310 and 320 are arranged in a cross shape (orthogonal in the present embodiment) in an overlapping arrangement state of the metal fittings 310 and 320, Bolts 330 are inserted through the intersections of the long holes 313 and 323.
According to the present embodiment, substantially the same operational effects as the embodiment shown in FIG.

  Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and there are design changes and the like without departing from the scope of the present invention. Are also included in the present invention. For example, it is not essential that the upper building unit and the lower building unit of the present invention are room units. The upper building unit may be a balcony unit, a roof unit, or the like, and the lower building unit may be an entrance unit, a garage unit, or the like.

  According to the present invention, in the ceiling support structure of the unit building, when the upper and lower building units are mounted up and down at the site installation stage, the hole of the horizontal connection part of the upper metal fitting attached to the structural material of the upper building unit, and the lower part It is possible to easily match the holes in the horizontal connection part of the lower bracket attached to the ceiling panel of the building unit, and improve the on-site workability of the unit building.

1 unit building 10A lower building unit 10B upper building unit 20 floor panel 23 side joist (structural material)
40 Ceiling panel 43 Side edge 50 Lower bracket 51 Vertical attachment portion 52 Horizontal connection portion 53 Long hole 60 Upper bracket 61 Vertical attachment portion 62 Horizontal connection portion 63 Long hole 70 Bolt 100B Upper building unit 110 Lower bracket 111 Vertical attachment portion 112 Horizontal Connection part 113 Long hole 120 Upper metal part 121 Vertical attachment part 122 Horizontal connection part 123 Long hole 130 Bolt 200B Upper building unit 210 Lower metal part 211 Vertical attachment part 212 Horizontal connection part 213 Long hole 220 Upper metal part 221 Vertical attachment part 222 Horizontal connection part 223 long hole 230 bolt 300B upper building unit 310 lower metal fitting 311 vertical attachment part 312 horizontal connection part 313 long hole 320 upper metal fitting 321 vertical attachment part 322 horizontal connection part 323 long hole 330 bolt

Claims (2)

The horizontal connection part of the upper bracket that is pre-installed on the structural material of the upper building unit and the horizontal connection part of the lower metal bracket that is pre-attached to the ceiling panel of the lower building unit overlap each other at the site installation stage of these two building units. In the ceiling support structure of the unit building that is arranged and connected by a bolt inserted through a hole provided in a horizontal connection part of both the metal fittings,
The holes provided in the horizontal connecting portions of the two metal fittings are elongated holes, and the longitudinal directions of the long holes of the two metal fittings intersect with each other in a state where the upper and lower portions of both metal fittings are overlapped, and the bolt intersects the long holes. A ceiling support structure for a unit building, which is inserted through a section. The upper bracket protrudes horizontally from the attachment portion to the structural material of the upper building unit in the horizontal direction, and the lower bracket extends horizontally from the attachment portion to the side edge of the ceiling panel of the lower building unit in the horizontal direction. Stick out,
The ceiling support structure for a unit building according to claim 1, wherein the protruding length of the horizontal connecting portion of the upper metal fitting is set longer than the protruding length of the horizontal connecting portion of the lower metal fitting.

Images