JP5371390B2 - Building unit reinforcement structure and unit building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reinforce a ceiling beam without imposing restrictions on usage of a floor face and a ceiling face of a lower story building unit when reinforcing the ceiling beam of the lower story building unit on which an upper story building unit arranged in a setback state is disposed. <P>SOLUTION: In the reinforcement structure of a building unit 10A on which the upper story building unit 20A arranged in the setback state is disposed, a reinforcing means 30 is provided at an intermediate section of the ceiling beam 13 on which a column base on the front base of the upper story building unit 20A is mounted, and the reinforcing means 30 includes a closing plate 40 fitted between upper and lower flanges of a C-shaped steel constituting the ceiling beam 13. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a reinforcing structure of a building unit and a unit building.

  In the unit building in which the upper floor building unit shorter in the wife or girder direction than the lower floor building unit is placed in the setback state, as set forth in Patent Document 1, the setback is placed on the middle part of the ceiling beam of the lower floor building unit. There are some which are equipped with column bases on the front of the upper floor building unit.

In the unit building that mounts the upper floor building unit set back arranged on the lower floor building unit as described above, the upper floor vertical load is concentrated and input to the middle part of the ceiling beam of the lower floor building unit. In order to reinforce the ceiling beam, a middle pillar is provided between the middle part of the ceiling beam and the middle part of the floor beam opposite to the ceiling beam, or a ladder frame-like ceiling reinforcement frame in the ceiling surface on the side of the ceiling beam It is necessary to provide.
JP 10-37308 A

  In order to reinforce the ceiling beam of the lower-floor building unit on which the upper-floor building unit placed in setback is installed, A wide opening that is not obstructed by the middle pillar cannot be formed on the wall surface of the floor building unit. In addition, when a ceiling reinforcing frame is provided on the side of the ceiling beam of the lower-floor building unit, there is a restriction on providing a staircase or an atrium space extending to the upper-floor building unit on the ceiling surface of the lower-floor building unit. .

  The object of the present invention is to reinforce the ceiling beam of the lower-floor building unit on which the upper-floor building unit placed in the setback is mounted, without restricting the use of the floor surface or ceiling surface of the lower-floor building unit, The purpose is to reinforce the ceiling beam.

According to the first aspect of the present invention, in the reinforcing structure of a building unit in which the upper floor building unit is mounted in a set-back arrangement, the reinforcing means is provided in the middle part of the wife side ceiling beam on which the front column base of the upper floor building unit is mounted. And the reinforcing means includes a closing plate fitted between upper and lower flanges of the C-shaped steel constituting the wife side ceiling beam, and an inner side of the unit fixed to the closing plate and orthogonal to the wife side ceiling beam The base plate is placed on the intermediate part of the end ceiling beam and the support plate, and the column base of the upper floor building unit and the connection piece of the end floor beam are placed on the base plate. And tighten the bolts to the connection part of the base floor and the wife side floor beam of the upper floor building unit, and to the girder side floor beam of the upper floor building unit. The connecting piece placed on the base plate, is obtained by the lower story building unit of the receiving plate, the base plate, and a connecting piece digit side floor beams of the upper story building unit to be bolted.

According to a second aspect of the present invention, in the first aspect of the invention, the base plate further includes a portion on which the column base of the upper floor building unit and the connection piece of the wife side floor beam are placed, and a girder side floor beam of the upper floor building unit. It has a different shape with a portion on which a connection piece is placed .

According to a third aspect of the present invention, in the first or second aspect of the present invention, the closing plate further comprises upper and lower projecting pieces projecting sideways from the upper and lower end portions of the plate body, and the upper and lower projecting pieces are arranged on the wife side ceiling. It is made to fit to the inner surface of the upper and lower flanges in the C-shaped steel constituting the beam .

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the receiving plate is arranged orthogonally to a mounting plate portion that is bolted to the closing plate and both side edges of the mounting plate portion. It consists of two side plate parts to be welded and a receiving plate part that is mounted on and welded to the upper edge of the two side plate parts.

The invention according to claim 5 is an upper floor that is setback arranged on the middle part of the wife side ceiling beam of the lower floor building unit to which the building unit reinforcement structure according to any one of claims 1 to 4 is applied. It is a unit building that is equipped with a column base in front of the building unit.

(Claim 1)
(a) The shear strength and torsional strength of the wife side ceiling beam can be reinforced only by fitting the closing plate into the space in the cross section of the C-shaped steel that constitutes the wife side ceiling beam of the lower floor building unit .
(b) A receiving plate that is fixed to the closing plate of (a) and extends inward of the unit perpendicular to the wife side ceiling beam is provided, and this receiving plate supports the girder side floor beam of the upper floor building unit. As a result, no torsional moment is generated in the above-mentioned wife side ceiling beam of the lower floor building unit, and the ceiling beam can be further reinforced.
(c) Place the column base of the upper floor building unit and the connection piece of the floor floor beam on the base plate, and the middle part of the floor ceiling beam of the lower floor building unit, the base side of the base floor and the upper floor building unit The floor beam connecting piece is bolted and the upper floor building unit girder floor beam connecting piece is placed on the base plate, the lower floor building unit receiving plate, the base plate, and the upper floor building unit girder side The floor beam connecting piece was bolted. As a result, the intermediate part and the receiving plate of the wife side ceiling beam of the lower floor building unit and the connection piece of the wife side floor beam and the connection piece of the girder side floor beam of the upper floor building unit are integrally coupled via the base plate. In addition, it is possible to reinforce each of the opposing ceiling beams on the lower floor building unit more firmly. Simplified without limiting the use of the ceiling surface of the lower-floor building unit on which the upper-floor building unit mounted in the set-back arrangement is installed, without providing a reinforcing beam that connects the opposite-side ceiling beams of the lower-floor building unit The ceiling beam can be firmly reinforced by a simple structure.
(Claim 2)
(d) By making the base plate differently shaped, the column base of the upper floor building unit and the connection piece of the gable side floor beam and the connection piece of the girder side floor beam of the upper floor building unit are combined into a single base plate. Can be provided.

(Claim 3 )
(e) The closing plate constituting the reinforcing means is provided with upper and lower projecting pieces projecting laterally from the upper and lower end portions of the plate body, and the upper and lower projecting pieces of the upper and lower flanges in the C-shaped steel constituting the ceiling beam. By fitting to the inner surface, it is possible to improve the fitting and mounting property of the closing plate.

(Claim 4)
(f) a receiving plate constituting the reinforcing means includes a mounting plate portion that is bolted to the closing plate, two side plate portions that are orthogonally disposed on both side edges of the mounting plate portion, and are welded. By including the receiving plate portion that is mounted on the upper edge portion of the side plate portion and is welded, the mounting property of the receiving plate and the mounting property of the girder-side floor beam of the upper floor building unit can be improved.

(Claim 5)
(g) In a unit building in which an upper-floor building unit set back arranged on a lower-floor building unit is mounted, the ceiling beam of the lower-floor building unit can be reinforced by the above (a) to (f) .

  1 is a schematic view showing a unit building, FIG. 2 is a perspective view showing a reinforcing structure of a ceiling beam of a lower floor building unit, and FIG. 3 is a side view showing a mounting state of the upper floor building unit on the lower floor building unit. 4 is a plan view of FIG. 3, FIG. 5 is a cross-sectional view taken along line V-V of FIG. 3, FIG. 6 is a perspective view showing a base plate provided on the ceiling beam of the lower floor building unit, and FIG. It is a perspective view which shows the modification of the reinforcement structure of the ceiling beam of.

  FIG. 1 shows a part of a unit building 100, which is constructed by vertically adjoining a standard building unit 10 and a building unit 20 arranged in a setback.

  1 to 6, the standard building unit 10 is a frame structure in which four floor beams 11, columns 12, and ceiling beams 13 are joined in a rectangular parallelepiped shape, and a connecting piece 12A is connected to a column base of the column 12. The floor beam 11 is joined via the ceiling, and the ceiling beam 13 is joined to the top of the pillar 12 via the connection piece 12B.

  The building unit 20 arranged in a setback is a frame structure in which each of the four floor beams 21, columns 22, and ceiling beams 23 are joined in a rectangular parallelepiped shape. The floor beams are connected to the column bases of the columns 22 via connection pieces 22A. 21 is joined, and the ceiling beam 23 is joined to the top of the pillar 22 via the connection piece 22B.

  The standard building unit 10 and the building unit 20 in the setback arrangement have the same girder direction length (the length of the floor beam 11 and the ceiling beam 13 on the long side, the length of the floor beam 21 and the ceiling beam 23). The length of the building unit 20 in the set-back arrangement (the length of the floor beam 21 and the ceiling beam 23 on the short side) is set to the length of the standard building unit 10 (the length of the floor beam 11 on the short side). The length of the ceiling beam 13 is smaller.

  The unit building 100 is a front side (long side side) of the upper floor building unit 20A set back arranged on the middle part of the wife side ceiling beam 13 (short side ceiling beam 13) of the lower floor building unit 10A. The column base of the front surface including the floor beam 21 and the ceiling beam 23 is mounted. Thereby, the front surface of the upper floor building unit 20A that is set back is disposed backward relative to the front surface of the lower floor building unit 10A by the difference in the length in the wife direction. The unit building 100 shown in FIG. 1 has an upper-floor building unit 20A on the first-floor building unit 10A mounted on the second floor in a set-back arrangement. Even if the upper-floor building unit 20A arranged in the setback of the floor is mounted, or the upper-floor building unit 20A disposed in the setback of the second and third floors is mounted on the first-floor building unit 10A good.

  In the unit building 100, the lower-floor building unit 10 </ b> A has a plurality of ceiling joists 14 that are spanned over the opposite wife-side ceiling beams 13, and a ceiling plate 15 is provided on the lower surface of the ceiling joists 14. The upper-floor building unit 20 </ b> A has a plurality of floor joists 24 that are spanned over the opposite wife-side floor beams 21, and a floor plate 25 is provided on the upper surface of the floor joists 24.

  As shown in FIG. 6, the unit building 100 has a part of the deformed base plate 16 placed on the middle part of the wife side ceiling beam 13 of the lower floor building unit 10 </ b> A, and the upper floor building unit 20 </ b> A on the base plate 16. The column base of the pillar 22 and the connecting piece 22A of the wife side floor beam 21 are placed, and the middle part of the wife side ceiling beam 13 of the lower floor building unit 10A, the base plate 16 and the wife side floor beam 21 of the upper floor building unit 20A are connected. The piece 22A is fastened by the high strength bolt 17 and the upper and lower washers 17A and 17A. In the unit building 100, the rest of the base plate 16 is placed on a receiving plate portion 53 of a receiving plate 50 (to be described later) of the lower floor building unit 10A, and the girder floor of the upper building unit 20A is placed on the base plate 16. The connecting piece 22A of the beam 21 is placed, and the connecting plate 22 of the receiving plate 50 of the lower floor building unit 10A, the base plate 16 and the connecting piece 22A of the beam side floor beam 21 of the upper floor building unit 20A are connected to the high strength bolt 18 and the upper and lower parts. Fasten with washers 18A and 18A.

  However, since the unit building 100 reinforces the ceiling beam 13 of the lower-floor building unit 10A on which the upper-floor building unit 20A that is set back is mounted without using a middle pillar, the following (1), (2) It has a reinforcing structure.

  (1) Reinforcing means 30 is provided in the middle part of the wife side ceiling beam 13 of the lower floor building unit 10A on which the column base of the column 22 on the front surface of the upper floor building unit 20A is mounted.

  As shown in FIGS. 2, 5, and 6, the reinforcing means 30 forms a C-shaped opening facing the inside of the ceiling beam 13 in the C-shaped steel constituting the end-side ceiling beam 13 of the lower floor building unit 10 </ b> A. The closing plate 40 is fitted between upper and lower flanges.

  The closing plate 40 is a bent molded body in which the upper and lower ends of a plate body 41 made of a rectangular flat plate are bent at right angles, and includes upper and lower projecting pieces 42 and 42 projecting sideways from the upper and lower ends of the plate body 41. The upper and lower protrusions 42 and 42 are fitted to the inner surfaces of the upper and lower flanges of the C-shaped steel constituting the end-side ceiling beam 13. The R outer surface where the upper and lower protrusions 42, 42 of the plate body 41 are bent is welded and fixed to the inner surfaces of the upper and lower flanges of the ceiling beam 13.

  (2) The reinforcing means 30 has a receiving plate 50 in addition to the closing plate described in (1) above. The receiving plate 50 is fixed to the plate main body 41 of the closing plate 40 and extends inward of the unit perpendicular to the wife side ceiling beam 13 of the lower floor building unit 10A. A girder-side floor beam 21 orthogonal to the wife-side floor beam 21 of the upper-floor building unit 20A placed on the wife-side ceiling beam 13 of the lower-floor building unit 10A is mounted on the receiving plate 50.

  The receiving plate 50 is a welded structure, and is disposed orthogonally to a mounting plate portion 51 made of a rectangular flat plate joined to the plate body 41 of the closing plate 40 by a high-strength bolt 19 and both side edges of the mounting plate portion 51. From side plate portions 52, 52 made of two triangular flat plates and welded to each other, and receiving plate portion 53 made of a rectangular flat plate mounted on the upper edge of the two side plate portions 52, 52 and welded. Become. As described above, the connection piece 22A of the girder-side floor beam 21 of the upper floor building unit 20A is placed on the receiving plate portion 53 of the receiving plate 50 through the base plate 16, and the high-strength bolts and the upper and lower washers 18A, 18A. It is concluded by.

According to the present embodiment, the following operational effects can be obtained.
(a) In the lower floor building unit 10A, as a reinforcing means 30 in the middle part of the ceiling beam 13 on which the column base of the front column 22 of the upper floor building unit 20A is mounted, A closing plate 40 fitted between the upper and lower flanges was provided. Thereby, the shear strength and torsional strength of the ceiling beam 13 can be reinforced only by fitting the closing plate 40 in the space in the cross section of the C-shaped steel constituting the ceiling beam 13 of the lower floor building unit 10A. Therefore, the ceiling beam 13 can be reinforced without restricting the use of the wall surface and ceiling surface of the lower floor building unit 10A.

  (b) The closing plate 40 constituting the reinforcing means 30 of the above (a) includes upper and lower projecting pieces 42 projecting sideways from the upper and lower ends of the plate body 41, and the upper and lower projecting pieces 42 are connected to the ceiling beam 13. By fitting to the inner surfaces of the upper and lower flanges in the C-shaped steel constituting the structure, the fitting and assembling property of the closing plate 40 can be improved.

  (c) The reinforcing means 30 of the above (a) includes a receiving plate 50 fixed to the closing plate 40 of the above (a) and extending inwardly of the unit perpendicular to the ceiling beam 13, and an upper floor building unit. It is assumed that the 20A girder floor beam 21 is mounted on the receiving plate 50. Since the girder floor beam 21 of the upper building unit 20A is mounted on the receiving plate 50, no torsional moment is generated in the ceiling beam 13 of the lower building unit 10A, and the ceiling beam 13 can be further reinforced.

  (d) The receiving plate 50 constituting the reinforcing means 30 of the above (c) is welded by being arranged orthogonally to the mounting plate portion 51 that is bolted to the closing plate 40 and both side edges of the mounting plate portion 51. By comprising two side plate portions 52 and a receiving plate portion 53 that is mounted on and welded to the upper edge portion of the two side plate portions 52, the mounting property of the receiving plate 50, the upper building unit The mountability of the 20A girder floor beam 21 can be improved.

  (e) In the unit building 100 that mounts the upper floor building unit 20A that is set back on the lower floor building unit 10A, the ceiling beam 13 of the lower floor building unit 10A can be reinforced by the above-described (a) to (d). .

  FIG. 7 shows a modification of the reinforcing means 30 in the middle part of the end-side ceiling beam 13 of the lower-floor building unit 10 </ b> A constituting the unit building 100 described above. The reinforcing means 30 of this modification consists only of the above-mentioned closing plate 40 and is not accompanied by the receiving plate 50. According to this modification, the effects (a), (b), and (e) according to the above-described embodiment are exhibited.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention.

FIG. 1 is a schematic diagram showing a unit building. FIG. 2 is a perspective view showing the reinforcing structure of the ceiling beam of the lower floor building unit. FIG. 3 is a side view showing a state where the upper-floor building unit is mounted on the lower-floor building unit. FIG. 4 is a plan view of FIG. FIG. 5 is a cross-sectional view taken along line V-V in FIG. FIG. 6 is a perspective view showing a base plate provided on the ceiling beam of the lower building unit. FIG. 7 is a perspective view showing a modified example of the reinforcing structure of the ceiling beam of the lower floor building unit.

Explanation of symbols

10A Lower floor building unit 13 Ceiling beam
16 Base plate
17, 18 Bolt 20A Upper floor building unit 21 Floor beam 22 Pillar
22A Connection piece 30 Reinforcing means 40 Closure plate 41 Plate body 42 Projection piece 50 Receiving plate 51 Mounting plate portion 52 Side plate portion 53 Receiving plate portion

Claims (5)

In the reinforcement structure of the building unit in which the upper floor building unit is set back and mounted,
Reinforcement means are provided in the middle part of the wife side ceiling beam where the front column base of the upper floor building unit is mounted,
The reinforcing means includes a closing plate that is fitted between upper and lower flanges of the C-shaped steel that constitutes the wife side ceiling beam, and extends inward of the unit that is fixed to the closing plate and orthogonal to the wife side ceiling beam. Consisting of the existing receiving plate,
Place a base plate on the middle part of the wife side ceiling beam and the receiving plate,
The column base of the upper floor building unit and the connecting piece of the floor floor beam are placed on the base plate, and the middle part of the floor ceiling beam of the lower floor building unit, the floor floor beam of the upper floor building unit, The connection piece is fastened with bolts, and the connection piece of the girder side floor beam of the upper floor building unit is placed on the base plate, and the receiving plate of the lower floor building unit, the base plate, and the girder side floor beam of the upper floor building unit are placed. A reinforcing structure for a building unit, wherein the connecting piece is bolted . The base plate has an irregular shape including a portion on which a connection base of a column base and a wife side floor beam of an upper floor building unit is placed and a portion on which a connection piece of a girder side floor beam of the upper floor building unit is placed. The building unit reinforcement structure according to 1. The closing plate is provided with upper and lower projecting pieces projecting laterally from the upper and lower ends of the plate body, and the upper and lower projecting pieces are fitted to the inner surfaces of the upper and lower flanges of the C-shaped steel constituting the wife side ceiling beam. The reinforcing structure for a building unit according to claim 1 or 2. The receiving plate is attached to the mounting plate portion that is bolted to the closing plate, two side plate portions that are orthogonally disposed on both side edge portions of the mounting plate portion, and welded to the upper edge portion of the two side plate portions. The reinforcing structure for a building unit according to any one of claims 1 to 3, further comprising a receiving plate portion mounted and welded. The column base of the front of the upper-floor building unit set back arrangement | positioning on the intermediate part of the wife side ceiling beam of the lower-floor building unit to which the reinforcement structure of the building unit in any one of Claims 1-4 was applied Unit building that is equipped with.

Images