JP2019112798A - Building structure - Google Patents

Abstract

To cut an edge between a wall and a slab on an upper floor while reducing a floor height.SOLUTION: A building structure 11 is provided with a shield wall 50 having a lower end 52 supported by the building body, and a slab 30 of an upper floor 16 supported by an upper end 54 of the shield wall 50 via a sliding bearing 100.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a building structure.

  Patent Literature 1 discloses a technique related to a radiation shielding partition wall installed around a space requiring radiation shielding such as a radiation treatment facility in a building, an RI handling facility, a radioactive waste storage room and the like.

  Because the radiation shielding wall is thick and rigid, eccentricity and horizontal force concentration may be excessive in the entire building. Therefore, in order to avoid this, it is desirable that the shielding wall be cut away from the building frame. However, in Patent Document 1, a beam is provided below the slab to support the slab above the shielding wall, and the height of the floor on which the shielding wall is installed is increased.

Japanese Patent Application Laid-Open No. 11-131655

  An object of the present invention is to cut the edge between a wall and a slab on the upper floor while suppressing the floor height in view of the above-mentioned fact.

  The invention according to claim 1 is a building structure comprising a wall whose lower end is supported by a building frame and an upper floor slab supported at the upper end of the wall via an isolator.

  In the invention according to claim 1, by supporting the upper floor slab with the isolator at the upper end of the wall, it is possible to cut the edge between the wall and the slab, and it becomes unnecessary to provide a beam under the slab The floor height of the floor where the wall is installed can be lowered by a minute. That is, it is possible to cut the edge between the wall and the slab on the upper floor while suppressing the floor height.

  The invention according to claim 2 is the building structure according to claim 1, wherein the wall is a shielding wall that shields transmission of radiation.

  In the invention according to claim 2, the edge of the shielding wall and the slab is cut by supporting the slab through the isolator at the upper end of the shielding wall. Therefore, the eccentricity of the building provided with the shielding wall of radiation can be suppressed.

  In the invention of claim 3, a ceiling material is joined to the upper end portion of the wall, and a plate-like edge cutting member is provided between the ceiling material and the slab. It is a building structure described in 2.

  In the invention according to claim 3, it is possible to cut the edge between the ceiling material and the slab while suppressing the floor height.

  According to the present invention, it is possible to cut the edge between the wall and the slab on the upper floor while suppressing the floor height.

It is a longitudinal cross-sectional view of the radiation treatment room of one embodiment of the present invention. It is the expansion longitudinal cross-sectional view which expanded the principal part of FIG. (A) is a longitudinal cross-sectional view of the radiotherapy room of a comparative example, (B) is a longitudinal cross-sectional view of FIG.

Embodiment
A radiation treatment room to which a building structure according to an embodiment of the present invention is applied will be described.

[Construction]
First, the structure of the radiation treatment room of the present embodiment will be described.

  A building 10 to which the building structure 11 of the present embodiment shown in FIG. 1 is applied is a hospital, and a radiation treatment room 20 is provided in the building 10. The building structure 11 of the present embodiment is configured to include a shielding wall 50, a sliding bearing 100 and a slab 30. The radiation treatment room 20 is surrounded by a reinforced concrete shielding wall 50 for shielding radiation.

  The thickness of the shielding wall 50 of this embodiment is 1000 mm or more. A radiation treatment device (not shown) is installed in the radiation treatment room 20. Further, the lower end portion 52 of the shielding wall 50 is joined to a building frame such as a reinforced concrete slab 14 constituting the floor of the floor 12 provided with the radiation treatment room 20.

  As shown in FIGS. 1 and 2, above the upper end portion 54 of the shielding wall 50, a reinforced concrete slab 30 constituting a floor of the upper floor 16 of the radiation treatment room 20 is provided with a gap. . In addition, a ceiling material 22 constituting a ceiling surface of the radiation treatment room 20 is joined to the upper end portion 54 of the shielding wall 50. Further, a plate-like edge cutting member 70 such as Styrofoam (registered trademark) is provided between the ceiling material 22 and the slab 30 of the upper floor 16.

  Also, a sliding bearing 100 as an example of an isolator is provided between the upper end portion 54 of the shielding wall 50 and the slab 30 of the upper floor 16. The slab 30 is thus supported on the upper end 54 of the shielding wall 50 via the sliding bearing 100.

  As shown in FIG. 2, the sliding bearing 100 of the present embodiment is configured to include a first member 110 and a second member 120. The first member 110 has a structure in which a sliding plate 112 formed of a fluorine-based resin such as PTFE and a support plate 114 made of metal are joined. The second member 120 has a structure in which a metal sliding plate 122 sliding on the sliding plate 112 and a support plate 124 are joined. Further, a substantially V-shaped joint muscle 116 is joined to the support plate 114 of the first member 110, and a substantially reverse V-shaped joint muscle 126 is joined to the support plate 124 of the second member 120,

  The first member 110 constituting the sliding bearing 100 is fixed by joint bars 116 embedded in the upper end portion 54 of the shielding wall 50. The second member 120 constituting the slide bearing 100 is fixed by joint bars 126 embedded in the lower surface portion 32 of the slab 30.

  In plan view, the support plate 124 of the second member 120 constituting the slide bearing 100 is smaller than the support plate 114 of the first member 110. Thus, a gap is created between the end face of the support plate 124 of the second member 120 and the end face of the edge cutting member 70. And the concrete stop plate 72 is joined to the end upper surface of the edge cutting member 70 so that this clearance gap part may be filled.

  The second member 120 constituting the sliding bearing 100 may be joined to the upper end portion 54 of the shielding wall 50, and the first member 110 may be joined to the lower surface portion 32 of the slab 30. Moreover, the structure of the sliding bearing 100 of this embodiment is an example, Comprising: It is not limited to this.

(Construction procedure)
Next, an example of the construction procedure will be described.

  With the sliding bearing 100 fixed to the upper end portion 54 of the shielding wall 50, the rim member 70 is laid on the ceiling member 22. Furthermore, a concrete stop plate 72 is provided on the upper end of the edge cutting member 70.

  Then, a reinforced concrete slab 30 constituting the floor of the upper floor 16 of the shielding wall 50 is cast. At this time, the concrete stop plate 72 provided on the upper surface of the end of the edge cutting member 70 allows the sliding bearing 100 to receive a gap between the end face of the support plate 124 of the second member 120 of the sliding bearing 100 and the end face of the edge cutting member 70. Prevents the entry of concrete.

[Action and effect]
Next, the operation and effects of the present invention will be described.

  By supporting the slab 30 of the upper floor 16 via the slide bearing 100 at the upper end portion 54 of the shielding wall 50, the edge between the shielding wall 50 and the slab 30 is cut. Moreover, since the plate-like edge cutting member 70 is provided between the ceiling material 22 joined to the upper end 54 of the shielding wall 50 and the slab 30, the edges of the ceiling material 22 and the slab 30 are cut. It is done. Therefore, the eccentricity of the whole building 10 provided with the shielding wall 50 for shielding the radiation is suppressed.

  Here, the building structure of the comparative example to which this invention is not applied is demonstrated.

  In the building structure 13 of the comparative example shown to FIG. 3 (A), the shielding wall 50 and the slab 30 of the upper floor 16 are cut off by spacing. In this case, the slab 30 is supported by a beam 80 provided below the slab.

  On the other hand, as shown in FIG. 1 and FIG. 3 (B), in the building structure 11 of the present embodiment, as described above, the upper floor portion 54 of the upper floor portion By supporting the slab 30, the edges of the shielding wall 50 and the slab 30 are cut. Therefore, it is not necessary to provide the small beam 80 under the slab in order to support the slab 30 as in the comparative example, and accordingly (see ΔL in FIG. 3), the slab 30 of the upper floor 16 provided with the shielding wall 50 It is lowered to raise the floor height of the upper floor 16.

  Therefore, the building structure 11 of the present embodiment can cut the edge between the shielding wall 50 and the slab 30 of the upper floor 16 while suppressing the floor height (compare FIG. 3 (A) with FIG. 3 (B) reference).

<Others>
The present invention is not limited to the above embodiment.

  For example, in the above embodiment, the slab 30 of the upper floor 16 provided with the shielding wall 50 is lowered to increase the floor height of the upper floor 16 by ΔL more than that of the comparative example, but is not limited thereto. The ceiling material 22 of the radiation treatment room 20 may be raised to raise the floor height of the radiation treatment room 20 by ΔL. Alternatively, the floor heights of both the radiation treatment room 20 and the upper floor 16 may be increased by, for example, 1 / 2ΔL.

  Also, for example, although the sliding bearing 100 is used as an isolator in the above embodiment, the present invention is not limited to this. An isolator other than the sliding bearing 100, for example, a rolling bearing such as a ball bearing bearing may be used.

  Also, for example, in the above embodiment, the present invention is applied to the shielding wall 50 that shields radiation, but the present invention is not limited to this. The invention may be applied to walls of general thickness.

  Furthermore, the present invention can be implemented in various aspects without departing from the scope of the present invention.

11 Building Structure 14 Slab (an example of a building frame)
30 Slabs on the upper floors 50 Shielded wall (example of wall)
52 lower end 54 upper end 70 rim member 100 sliding bearing (an example of an isolator)

Claims (3)

With the wall whose lower end is supported by the building frame,
An upper slab supported by an isolator at the upper end of the wall,
Building structure equipped with The wall is a shielding wall that shields the transmission of radiation.
The building structure according to claim 1. A ceiling material is joined to the upper end of the wall,
A plate-like edge cutting member is provided between the ceiling material and the slab.
The building structure according to claim 1 or 2.