JP7397723B2 - Building trunk structure - Google Patents

Description

The present invention relates to a building trunk structure.

Patent Document 1 listed below discloses a scaffold support structure. In this scaffolding support structure, wall connecting fittings are provided on the steel beams that constitute part of the building frame. A part of this wall connecting fitting can protrude from the gap between a plurality of external wall panels attached to a building in the direction perpendicular to the surface of the external wall panel, and the wall connecting fitting in this protruding state In some cases, wall connecting members attached to scaffolding provided outside the building for building maintenance can be screwed together. This prevents the scaffold from collapsing.

Japanese Patent Application Publication No. 2018-96102

However, in the case of the configuration disclosed in Patent Document 1, a part of the wall connecting fittings has a water-stopping member provided between the outer wall panels in order to protrude from the gap between the outer wall panels. need to be removed. Therefore, it is necessary to remove the water-stopping member and reinstall the water-stopping member when the use of the scaffolding is finished, which may increase the number of work steps and reduce maintainability. Therefore, the above prior art has room for improvement in this respect.

The present invention takes the above problems into consideration and aims to provide a building trunk structure that can improve maintainability.

The building trunk structure according to the first aspect includes a plurality of connecting members attached to an outer wall panel of a building at predetermined intervals in the horizontal direction, and a connecting member extending along the outer wall panel and attached to the connecting member. A torso difference that is removably engaged, and a scaffold connection member that is provided at a position overlapping the torso difference when viewed in a direction perpendicular to the surface of the outer wall panel of the connecting member and that is inserted in a substantially horizontal direction. It has a holding part for holding.

In the building trunk difference structure according to a second aspect, in the building trunk difference structure according to the first aspect, the trunk difference is arranged at a position where the holding part and the outer wall panel overlap when viewed in a direction perpendicular to the plane. An attachment/detachment barrel difference set shorter than the longitudinal dimension of the connecting member is engaged.

The building trunk structure according to a third aspect is the building trunk structure according to the first or second aspect, wherein the building has multiple floors by arranging building units at least in the vertical direction. The building is a unit building, and a plurality of the connecting members are attached at predetermined intervals in the horizontal direction across the upper floor unit and the lower floor unit in the building unit.

According to the first aspect, the building trunk structure includes a connecting member, a trunk difference, and a holding part. A plurality of connecting members are attached to an exterior wall panel of a building, and each connecting member is attached at a predetermined interval in the horizontal direction. A barrel extending along the outer wall panel is removably engaged with this connecting member. Further, a holding portion is provided at a position in the connecting member that overlaps with the torso difference when viewed in a direction perpendicular to the surface of the outer wall panel. This holding part is capable of holding a scaffold connecting member inserted from the outdoor side. Therefore, when setting up a scaffold on the outside of a building, remove the torso that is engaged with the connecting member to expose the holding part, hold the scaffold connecting member in the holding part, and then connect the scaffold connecting member to the scaffold. By connecting the scaffolding to the building, the scaffolding can be connected to the building via the scaffolding connecting member, and the collapse of the scaffolding can be suppressed. Further, when attaching and detaching the scaffolding connecting member, the torso can be attached and detached from the connecting member, so there is no need to remove and reinstall the waterproofing member of the outer wall panel. Therefore, an increase in the number of work steps can be suppressed.

According to the second aspect, the torso difference is configured to include a torso difference for attachment and detachment. This attachment/detachment gap is disposed at a position overlapping the holding portion when viewed in a direction perpendicular to the surface of the outer wall panel, and is set to be shorter than the length of the connecting member in the longitudinal direction. Therefore, when exposing the holding portion of the connecting member in order to hold the scaffold connecting member, it is sufficient to remove only the attaching/detachable trunk which is shorter than the longitudinal dimension of the connecting member, so that workability can be improved.

According to the third aspect, the connecting member is attached across an upper floor unit and a lower floor unit in a multi-story unit building by arranging the building units at least in the vertical direction. That is, in general, a gap is provided at the boundary between building units in the vertical direction, and a connecting member is provided to correspond to this gap. Therefore, it can be applied without major changes to the existing configuration, resulting in increased versatility.

As described above, the building trunk structure according to the present invention has an excellent effect of improving maintainability.

FIG. 1 is a schematic diagram showing a building having a building trunk structure according to an embodiment. FIG. 2 is a plan view showing an example of a state in which a scaffold is provided in a building having a building trunk structure according to an embodiment. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. FIG. 1 is an exploded perspective view showing main parts of a building trunk structure according to an embodiment.

Hereinafter, an embodiment of a building trunk structure according to the present invention will be described using FIGS. 1 to 4.

(overall structure)
As shown in FIG. 1, a unit building 11 as a building to which the building trunk structure 10 is applied has a plurality of floors (one example is a two-story building) made up of a plurality of building units 12 placed on a foundation (not shown). It is said that Each of the building units 12 has a rectangular parallelepiped shape, and by stacking the building units 12 in the vertical direction of the building, one floor (in this embodiment, the second floor) of the unit building 11 and this one The floor below the floor (in this embodiment, the first floor) is configured.

The upper floor side of the unit building 11, that is, the outer side of the building of the upper floor unit 12A constituting the second floor, includes an upper floor exterior member 14 and an outer wall frame 16, as shown in FIG. An exterior wall panel 18 is attached. The upper floor exterior member 14 is made of a material such as concrete or ceramic that has excellent weather resistance.

The upper floor exterior member 14 is attached to an outer wall frame 16 arranged inside the building with respect to the upper floor exterior member 14 by fasteners (not shown). This outer wall frame 16 is arranged at each end of the upper floor exterior member 14 in the vertical direction of the building, and has a horizontal frame 20 as a frame member extending along the end with the horizontal direction as the longitudinal direction. , a vertical frame (not shown) connects each horizontal frame 20 at the end of the upper floor exterior member 14 in the vertical direction of the building. The horizontal frame 20 has an outer vertical wall section 22, an inner vertical wall section 24, one end of the outer vertical wall section 22 in the vertical direction of the building, and a corresponding end of the inner vertical wall section 24 in the vertical direction of the building. The bottom wall portion 26 connects one end portion in a substantially horizontal direction, and the cross section perpendicular to the longitudinal direction is formed into a substantially U-shape. Further, the horizontal frame 20 provided at a position corresponding to the lower end portion 28 of the upper floor exterior member 14 is arranged with a cross-sectional opening opening toward the lower side of the building.

An upper end portion 32A of the waterproof sheet 32 is provided between the building inner side surface 30 at the lower end portion 28 of the upper floor exterior member 14 and the outer vertical wall portion 22 of the horizontal frame 20 of the outer wall frame 16. This waterproof sheet 32 is formed into a substantially rectangular sheet shape with the horizontal direction as the longitudinal direction along the lower end 28 of the upper floor exterior member 14, and is continuously disposed along the lower end 28 of the upper floor exterior member 14. It is provided. Further, the waterproof sheet 32 is made of, for example, a CR (chloroprene rubber) sheet. The upper end portion 32A of the waterproof sheet 32 is joined to the horizontal frame 20 and the upper floor exterior member 14 by a fastener 15 (see FIG. 3) inserted into a fastening hole 56 in the upper floor exterior member 14.

The lower floor unit 12B, which is arranged directly below the upper floor unit 12A which constitutes the second floor of the unit building 11 and which constitutes the lower floor (first floor) of the unit building 11, has a lower floor exterior member on the outside of the building. 38 and an outer wall frame 17 is attached. Like the upper floor exterior member 14, the lower floor exterior member 38 is made of a ceramic material (for example, concrete, ceramic, etc.) that has excellent weather resistance.

The lower floor exterior member 38 is attached to the outer wall frame 17 placed inside the building with fasteners (not shown). The outer wall frame 17 is arranged at each end of the lower floor exterior member 38 in the vertical direction of the building, and has a horizontal frame 21 as a frame member extending along the end with the horizontal direction as the longitudinal direction. , a vertical frame (not shown) connects each horizontal frame 21 at the end of the lower floor exterior member 38 in the vertical direction of the building. Note that, similar to the horizontal frame 20 in the outer wall frame 16 of the upper floor unit 12A constituting the second floor of the unit building 11, the horizontal frame 21 has an outer vertical wall portion 23, an inner vertical wall portion 25, and an outer vertical wall. A bottom wall portion 27 connects one end of the portion 23 in the vertical direction of the building and one end of the corresponding inner vertical wall portion 25 in the vertical direction of the building in a substantially horizontal direction, and is perpendicular to the longitudinal direction. The cross-sectional shape is approximately U-shaped. Further, the horizontal frame 21 provided at a position corresponding to the upper end portion 42 of the lower floor exterior member 38 is arranged with a cross-sectional opening opened toward the upper side of the building.

A fastening hole 56 into which the fastener 15 is inserted is formed in the upper end portion 42 of the lower floor exterior member 38 (see FIG. 3). Further, a lower end portion 32C of the waterproof sheet 32 is attached to the outer surface of the building at the upper end portion 42 of the lower floor exterior member 38. A lower end portion 32C of this waterproof sheet 32 is joined to the horizontal frame 21 and the lower floor exterior member 38 by a fastener 15 inserted into a fastening hole 56 in the lower floor exterior member 38.

(Connection member)
A connecting member 44 is provided between the upper floor unit 12A and the lower floor unit 12B. Specifically, it is provided so as to extend vertically between the upper floor exterior member 14 of the upper floor unit 12A and the lower floor exterior member 38 of the lower floor unit 12B. Note that a plurality of connecting members 44 are provided at predetermined intervals in the horizontal direction (not shown).

The connecting member 44 is composed of a plate-like member whose thickness direction is the thickness direction of the upper-floor exterior member 14 (lower-floor exterior member 38) corresponding to the attached position, and has a main body portion 44A and a stepped portion. 44B, a torso difference engaging part 44C, and a holding part 44D. The main body portion 44A is formed in a substantially rectangular shape with the horizontal direction as the longitudinal direction when viewed in a direction perpendicular to the plane of the upper floor exterior member 14 (lower floor exterior member 38).

The step portions 44B are provided at both longitudinal ends of the main body portion 44A. This stepped portion 44B includes a first extending wall portion 44BA extending from the main body portion 44A toward the indoor side, and a second extending wall portion 44BA extending from the first extending wall portion 44BA to the outside of the main body portion 44A in the horizontal direction. The extended wall portion 44BB is configured to include the extended wall portion 44BB. Thereby, the indoor side surface of the second extending wall portion 44BB comes into contact with the outdoor side surfaces of the upper floor exterior member 14 and the lower floor exterior member 38, respectively. Therefore, the main body portion 44A is spaced apart from the upper exterior member 14 and the lower exterior member 38 in the direction perpendicular to the plane of the upper exterior member 14 (lower exterior member 38).

A plurality of fastening holes 44AA are formed in the main body portion 44A. The fastening hole 44AA is a through hole in the thickness direction of the main body portion 44A, and is formed at positions corresponding to the upper exterior member 14 and the lower exterior member 38, respectively.

As an example, a plurality of torso difference engaging parts 44C (four in this embodiment) are spaced apart in the horizontal direction at a portion corresponding to the space between the upper exterior member 14 and the lower exterior member 38 in the main body 44A. ) is formed. As shown in FIG. 3, the barrel difference engagement portion 44C includes a first extending wall portion 44CA, a second extending wall portion 44CB, and a third extending wall portion 44CC. The first extending wall portion 44CA is a wall portion extending from the main body portion 44A toward the outdoors in the thickness direction of the main body portion 44A. The second extending wall 44CB is a wall that is inclined upward from the building toward the outside from the tip of the first extending wall 44CA. The third extending wall 44CC is a wall extending upward from the tip of the second extending wall 44CB. The torso difference engaging part 44C is formed by so-called cutting and raising a part of the main body part 44A, so that the torso difference engaging part 44C is flat on the lower side of the building of the torso difference engaging part 44C. A through hole 44CD is formed which has substantially the same shape as the shape when expanded upward (see FIG. 4).

The holding portion 44D is provided approximately at the center in the longitudinal direction of the main body portion 44A (see FIG. 4), and includes a holding portion through hole 44DA and a cap nut 44DB. The holding portion through hole 44DA is formed to penetrate the main body portion 44A in the thickness direction. The cap nut 44DB is joined by welding or the like with the bottom portion 44DC facing indoors at a position corresponding to the holding portion through hole 44DA on the indoor surface of the main body portion 44A, and the female thread inside the cap nut 44DB is The formed communication hole 44DD and the holding portion through hole 44DA are arranged on the same axis. Note that the cap nut 44DB is arranged closer to the outdoors than the waterproof sheet 32 between the upper floor exterior member 14 and the lower floor exterior member 38.

A torso difference fastening wall 44E is formed in a part of the lower end of the main body 44A. The torso difference fastening wall 44E extends from the lower end of the main body 44A toward the outdoors in the thickness direction of the main body 44A. Further, a fastening hole 44EA is formed in the torso difference fastening wall portion 44E, which is penetrated in the thickness direction of the torso difference fastening wall portion 44E.

(Torso difference)
A torso difference 60 is engaged with the connecting member 44 . This torso difference 60 is configured to include a standard torso difference 62 and a detachable torso difference 64, and the standard torso difference 62 and the detachable torso difference 64 are horizontally connected to the upper floor unit 12A. It is provided so as to continuously cover the entire circumference of the unit building 11 between it and the lower floor unit 12B from the outdoor side (see FIG. 1).

As shown in FIG. 3, the torso difference 60 includes a torso difference main body part 60A, an upper end folded part 60B, a torso difference protrusion 60C, and a waterproof member 60D. The torso difference main body portion 60A is formed into a plate shape whose thickness direction is the same as the thickness direction of the upper floor exterior member 14 (lower floor exterior member 38). The upper end folded portion 60B is provided at the upper end of the torso difference main body portion 60A, and is connected to a first folded extension portion 60BA extending from the torso difference main body portion 60A to the indoor side, and a first folded extension portion 60BA. It is configured to include a second folded extension part 60BB extending from the indoor end to the lower side of the building. Thereby, the second folded extension portion 60BB is spaced apart from the trunk body portion 60A in the thickness direction of the upper exterior member 14 (lower exterior member 38). Further, the shape of the tip end of the second folded and extended portion 60BB is formed to have a substantially similar shape that is slightly smaller than the barrel difference engagement portion 44C of the connecting member 44. Therefore, by assembling the torso difference 60 along the locus shown by the arrow in FIG. 4, the torso difference 60 can be engaged with the torso difference engaging portion 44C of the connecting member 44.

A plurality of torso difference protrusions 60C are provided on the indoor side of the torso difference main body part 60A, and specifically, the torso difference protrusions 60C are provided at the lower end of the torso difference main body part 60A and at predetermined intervals from the lower end in the vertical direction of the building. A plurality (three in this embodiment) are provided spaced apart from each other. A waterproof member 60D made of Eptsealer, for example, is provided on the indoor side surface of the trunk difference protrusion 60C provided at the lower end of the trunk difference main body part 60A, and the lower part is It is in contact with the outdoor side surface of the floor exterior member 38. Note that this waterproof member 60D is also provided at the upper end of the indoor side surface of the upper end folded portion 60B, and the upper end folded portion 60B is in contact with the outdoor side surface of the upper floor exterior member 14 via the waterproof member 60D. .

The indoor side surface of the torso difference protrusion 60C provided outside the lower end of the torso difference main body part 60A is in contact with the outdoor side surface of the main body part 44A of the connecting member 44. Moreover, between the trunk difference protrusion 60C provided at the lower end of the trunk difference main body part 60A and the trunk difference protrusion 60C adjacent to the trunk difference projection part 60C on the upper side of the building, A barrel-difference fastening wall portion 44E of the connecting member 44 can be arranged. A fastening hole 60CA penetrating in the vertical direction of the building is formed at a position corresponding to the fastening hole 44EA of the torso difference fastening wall 44E in the torso difference protrusion 60C provided at the lower end of the torso difference main body part 60A. has been done. Thereby, the torso difference 60 is fastened to the connecting member 44 by inserting and fastening the fastener 68 into the fastening hole 60CA and the fastening hole 44EA.

Of the torso differences 60, the detachable torso difference 64 has a longitudinal dimension set to be shorter than the longitudinal dimension of the connecting member 44 (see FIG. 1). Specifically, as shown in FIG. 4, among the torso difference engaging parts 44C formed on the main body part 44A of the connecting member 44, only the pair of torso difference engaging parts 44C adjacent to the holding part 44D are engaged. It is said that the dimensions are as follows. In other words, the holding portion 44D of the connecting member 44 is covered from the outdoor side by the detachable torso 64. The standard barrel difference 62 is, for example, set to such a length that it can be mounted on a vehicle for transportation from the factory to the construction site (about 3 m, for example), and the connecting member 44 Of the torso difference engaging portions 44C, the detachable torso difference 64 is engaged with the unengaged torso difference 64. The longitudinal ends of the standard torso difference 62 and the detachable torso difference 64 are brought into contact with each other so that there is no gap. That is, the plurality of connecting members 44 are spaced apart from each other by about 3 m in the horizontal direction.

(Laying scaffolding)
Next, the case where the scaffolding 70 is provided will be explained. As shown in FIG. 2, when performing maintenance such as painting or repairing only one side of the upper floor exterior member 14 (lower floor exterior member 38) of the unit building 11 (hereinafter referred to as "exterior wall panel 72 to be constructed"). For example, a scaffold 70 made of a single pipe scaffold is provided at a location facing the outer wall panel 72 to be constructed. Generally, if the scaffolding 70 is provided only at a location facing the exterior wall panel 72 to be constructed, the strength of the scaffolding 70 cannot be ensured. The strength of the scaffold 70 is ensured by providing a scaffold 74 also at the facing part and connecting it to the scaffold 70.

The scaffolds 70 and 74 are connected to a wall connecting member 76 as a scaffold connecting member for connecting to the unit building 11. The wall connecting materials 76 are provided at positions corresponding to the holding parts 44D (see FIG. 4) in the connecting members 44 of the unit building 11, and as shown in FIG. The end portion 76A is inserted into the holding portion 44D and screwed into the cap nut 44DB. Thereby, the wall connecting material 76 and thus the scaffolding 70 are connected to the unit building 11. Note that when inserting the end portion 76A of the wall connecting material 76 into the holding portion 44D, the fastener 68 is unfastened and the removable torso 64 that covers the holding portion 44D from the outdoor side is removed. When removing the scaffold 70, the end portion 76A of the wall connecting material 76 is removed from the holding portion 44D, and the attachment/detachment sash 64 is engaged with the sash engagement portion 44C of the connecting member 44, and then the The torso difference 60 is fastened to the connecting member 44 by the tool 68. As a result, the attachment/detachment torso 64 is attached to the connection member 44 .

(Operations and effects of embodiments)
Next, the operation and effects of this embodiment will be explained.

According to this embodiment, as shown in FIG. 3, the building trunk structure 10 includes a connecting member 44, a trunk difference 60, and a holding part 44D. A plurality of connecting members 44 are attached to the outer wall panels 18 and 40 of the unit building 11, and the respective connecting members 44 are attached at predetermined intervals in the horizontal direction. A torso difference 60 extending along the outer wall panels 18, 40 is removably engaged with the connecting member 44. Further, a holding portion 44D is provided at a position in the connecting member 44 that overlaps the torso difference 60 when viewed in a direction perpendicular to the surface of the outer wall panels 18 and 40. This holding portion 44D is capable of holding a wall connecting material 76 inserted from the outdoor side. Therefore, when installing the scaffold 70 outside the unit building 11, the torso 60 engaged with the connecting member 44 is removed to expose the holding part 44D, and then the wall connecting material 76 is held in the holding part 44D. By connecting the wall connecting material 76 and the scaffolding 70, it is possible to connect the scaffolding 70 to the unit building 11 via the wall connecting material 76 and suppress the scaffold 70 from falling. In addition, when attaching and detaching the wall connecting material 76, it is only necessary to attach and detach the torso 60 from the connecting member 44, so there is no need to remove and reinstall the waterproof members of the outer wall panels 18, 40. Therefore, an increase in the number of work steps can be suppressed. Thereby, maintainability can be improved.

Further, the torso difference 60 is configured to include a torso difference 64 for attachment and detachment. This attachment/detachment body difference 64 is arranged at a position overlapping the holding portion 44D when viewed in a direction perpendicular to the surface of the outer wall panels 18, 40, and is set to be shorter than the longitudinal dimension of the connecting member 44. Therefore, when exposing the holding portion 44D of the connecting member 44 in order to hold the wall connecting material 76, it is only necessary to remove the attaching/detaching girder 64, which is shorter than the longitudinal dimension of the connecting member 44, improving work efficiency. can be done.

Further, the connecting member 44 is attached across the upper floor unit 12A and the lower floor unit 12B in the unit building 11, which has multiple floors by arranging the building units 12 at least in the vertical direction. That is, generally, a torso difference 60 is provided at the boundary between the building units 12 in the vertical direction, and the connecting member 44 is provided to correspond to this torso difference 60. Therefore, it can be applied without major changes to the existing configuration, resulting in increased versatility.

In the embodiment described above, the torso difference 60 is configured to include the standard torso difference 62 and the attachable/detachable torso difference 64, but is not limited to this. The difference 62 may cover the holding portion 44D of the connecting member 44 from the outdoor side.

Further, although the building trunk structure 10 is a unit building composed of building units 12, the present invention is not limited to this, and may be applied to buildings constructed by other construction methods such as a frame construction method.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above, and it is possible to implement various modifications other than the above without departing from the spirit thereof. Of course.

10 Building trunk structure 11 Unit building (building)
12 Building unit 12A Upper floor unit 12B Lower floor unit 18 Exterior wall panel 40 Exterior wall panel 44 Connecting member 44D Holding section 60 Trunk difference 64 Detachable trunk difference 76 Wall connecting material (scaffold connecting member)

Claims (3)

A girder that extends horizontally along the exterior wall panel of a building;
A plurality of body parts are attached to the outer wall panel at predetermined intervals in the horizontal direction, and the body parts are removably engaged with and attached to each body part, and when the body parts are attached, the body parts are attached to the outer wall panel. a connecting member attached to the
Provided at a position overlapping the torso difference in the connecting member when viewed in a direction perpendicular to the surface of the outer wall panel, and capable of holding a scaffold connecting member inserted from the outdoor side when the torso difference is not attached to the connecting member. A holding part that is said to be
has
The connecting member has a building trunk structure that connects the scaffold connecting member to the outer wall panel by holding the scaffold connecting member in the holding part . The torso difference is configured to include a detachable torso difference that is arranged at a position overlapping with the holding part when viewed in a direction perpendicular to the surface of the outer wall panel, and is set to be shorter than a longitudinal dimension of the connecting member. ,
The building trunk structure according to claim 1. The building is a multi-story unit building with building units arranged at least in the vertical direction,
The connecting member is attached across the outer wall panel of the upper floor unit and the outer wall panel of the lower floor unit in the building unit,
The building trunk structure according to claim 1 or 2.