JP6924691B2 - How to build building structure and shielding wall - Google Patents

Description

The present invention relates to a method for constructing a building structure and a shielding wall.

Reference 1 discloses a technique relating to an outer wall structure using a seismic slit material in a reinforced concrete building and a construction method thereof, and particularly to a technique for constructing an outer wall in which the slit material is installed in the horizontal direction. In this prior art, a second slit material having an inclined surface on the joint side is placed above the first slit material.

Reference 2 discloses a method of constructing a seismic slit in which a slit material is driven into concrete to form a seismic slit, and a technique relating to a support structure of the slit material. In this prior art, a pair of formwork covering both side surfaces of a non-bearing wall is built, and a slit material whose width increases from one end side to the other end side is arranged between the pair of formwork. This slit material is removed by pulling it out to the wider side of the slit material.

Cited Document 3 discloses a technique relating to a building in which a seismic slit material and the seismic slit material are arranged at a joint portion between a non-structural wall and a structural portion. In this prior art, by arranging a seismic slit material made of foamed resin material in the gap formed between the non-structural wall and the structural part, ventilation of the joint gap and leakage of rainwater are blocked while ensuring edge cutting. I try to do it.

Japanese Unexamined Patent Publication No. 2001-3492 Japanese Unexamined Patent Publication No. 2014-141819 Japanese Unexamined Patent Publication No. 2012-202079

Since the shielding wall that shields radiation is very thick and very rigid, the eccentricity and horizontal force concentration of the entire building may become excessive. Therefore, it is desirable that the shielding wall be separated from the surrounding building frame. However, since the wall thickness of the shielding wall is very thick, the pillars may be arranged in the shielding wall, and in this case, it becomes difficult to cut the edge between the shielding wall and the pillar.

Therefore, in view of the above facts, an object of the present invention is to cut off the edge of a pillar arranged in a shielding wall that shields radiation.

The invention of claim 1 is a building structure including a shielding wall that shields radiation, and a pillar formed in a vertical hole formed in the shielding wall with a gap in the inner wall of the vertical hole. ..

In the invention according to claim 1, the edge between the shielding wall and the pillar can be cut by providing a pillar in a vertical hole formed in the shielding wall that shields radiation. Therefore, excessive eccentricity and concentration of horizontal force of the entire building in which columns are arranged in the shielding wall are suppressed.

The invention according to claim 1 is the invention of claim 1, wherein the side surface of the pillar is inclined with respect to the wall surface of the shielding wall and intersects with the radiation incident on the shielding wall in a plan view. The building structure of.

In the invention according to claim 2, since radiation is prevented from passing through the gap between the side surface of the column and the vertical hole, the radiation shielding effect is improved.

The invention according to claim 3 is the building structure according to claim 1 or 2, wherein the gap between the peripheral surface of the pillar and the inner wall of the vertical hole is an air layer.

In the invention according to claim 3, since the gap between the peripheral surface of the pillar and the vertical hole is an air layer, the edge between the shielding wall and the pillar can be cut more completely. Therefore, excessive eccentricity of the entire building and excessive concentration of horizontal force due to the shielding wall are more effectively suppressed.

According to the fourth aspect of the present invention, a step of providing the edge cutting member along the peripheral surface of the pillar and a state in which the edge cutting member is provided on the peripheral surface of the pillar, concrete is cast around the pillar to shield the pillar. It is a method of constructing a shielding wall including a step of constructing a wall and a step of pulling out the edge cutting member.

In the invention according to claim 4, concrete is cast in a state where the edge cutting member is provided along the peripheral surface of the pillar to construct a shielding wall, and then the edge cutting member is pulled out to vertically enter the shielding wall. Along with forming the hole, a pillar can be easily provided in the vertical hole.

According to the present invention, the pillars arranged in the shielding wall that shields radiation and the shielding wall can be cut off.

It is a horizontal sectional view of the radiotherapy room of one Embodiment of this invention. It is an enlarged horizontal sectional view of the main part of FIG. It is a perspective view of the edge cutting member arranged along the peripheral surface of a pillar. It is an exploded perspective view of the edge cutting member. It is a vertical cross-sectional view which constructed the wall with the edge cutting member arranged along the peripheral surface of a column.

<Embodiment>
A radiotherapy room to which the building structure of one embodiment according to the present invention is applied will be described.

[structure]
First, the structure of the radiotherapy room of the present embodiment will be described.

The radiotherapy room 20 shown in FIG. 1 is provided in a building 10 which is a hospital. The radiation therapy room 20 is surrounded by a reinforced concrete shielding wall 50 that shields radiation. The thickness of the shielding wall 50 of the present embodiment is 1000 mm or more.

A radiotherapy device 30 is installed in the radiotherapy room 20. The emitting portion 34 of the radiation S emitted from the radiation therapy device 30 to the radiation position 32 moves in a substantially circular orbit K in a plan view around the radiation position 32.

As shown in FIGS. 1 and 2, a vertical hole 52 is formed in the shielding wall 50, and a reinforced concrete column 100 is provided in the vertical hole 52.

As shown in FIG. 2, the pillar 100 has a rectangular shape in a plan view and a triangular shape in a right angle in a plan view, which is added to the side surface 112 of the main body in the direction intersecting the wall surface 50A of the shielding wall 50 in the pillar body 110. It is composed of an additional portion 120. As described above, the pillar 100 composed of the pillar body 110 having a rectangular shape in a plan view and the additional portion 120 having a right-angled triangle shape in a plane view has a parallel quadrilateral shape as a whole in a plane view.

That is, the side surface 104 of the peripheral surface 102 of the pillar 100 in the direction intersecting the wall surface 50A of the shielding wall 50 is inclined with respect to the wall surface 50A. Further, the inclined side surface 104 of the pillar 100 intersects the above-mentioned radiation S in a plan view.

Further, there is a gap between the entire peripheral surface 102 of the pillar 100 and the inner wall 52A of the vertical hole 52 in the shielding wall 50, and this gap is an air layer 60.

[How to build a radiotherapy room]
Next, an example of a method for constructing the radiotherapy room 20 will be described.

As shown in FIG. 3, the additional portion 120 is added to the main body side surface 112 of the existing pillar main body 110 (see also FIG. 2). An edge cutting member 200 is provided along the peripheral surface 102 of the pillar 100.

As shown in FIGS. 3, 4 and 5, the edge cutting member 200 sandwiches two full-screw bolts 220 as an example of a wire rod between two plate-shaped members 210 made of styrofoam or the like, and has full screws. The structure is such that sheet metal plates 230 and 232 are fastened to the top and bottom of the bolt 220 with nuts 222. The upper plate member 230 is provided with a mounting portion 234 for attaching a wire 236 (see FIG. 4), which will be described later.

As shown in FIG. 4, one plate surface 210A of the plate-shaped member 210 is formed with a groove portion 212 into which the full screw bolt 220 is inserted.

Then, as shown in FIG. 5, concrete is cast around the pillar 100 provided with the edge cutting member 200 along the peripheral surface 102 as described above to construct the shielding wall 50, and then shown in FIG. As described above, the wire 236 is attached to the attachment portion 234 of the upper plate member 230, pulled up, and the edge cutting member 200 is pulled out.

By such a method, the pillar 100 is provided in the vertical hole 52 of the shielding wall 50 with a gap from the inner wall 52A.

[Action and effect]
Next, the operation and effect of this embodiment will be described.

In the radiation therapy room 20 of the present embodiment, the edge between the shielding wall 50 and the pillar 100 is cut by providing the pillar 100 in the vertical hole 52 formed in the shielding wall 50 that shields the radiation S. Therefore, excessive eccentricity and concentration of horizontal force of the entire building 10 in which the pillar 100 is arranged in the shielding wall 50 are suppressed.

Further, the peripheral surface 102 of the pillar 100 and the inner wall 52A of the vertical hole 52 are not in contact with each other, and the gap is an air layer 60. Therefore, the edge between the shielding wall 50 and the pillar 100 can be completely cut. Therefore, the excessive eccentricity of the entire building 10 and the excessive concentration of horizontal force due to the shielding wall 50 are more effectively suppressed.

Further, in a state where the edge cutting member 200 is provided along the peripheral surface 102 of the pillar 100, concrete is cast to construct the shielding wall 50, and then the edge cutting member 200 is pulled out to form a vertical hole in the shielding wall 50. 52 can be formed, and the pillar 100 can be easily provided in the vertical hole 52.

Further, the side surface 104 of the pillar 100 is inclined with respect to the wall surface 50A of the shielding wall 50 and intersects with the radiation S. Therefore, the radiation S is prevented from passing through the gap (the air layer 60 in the present embodiment) between the peripheral surface 102 of the pillar 100 and the inner wall 52A of the vertical hole 52, so that the shielding effect of the radiation S is improved. ..

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

For example, in the above embodiment, the gap between the inner wall 52A of the vertical hole 52 of the shielding wall 50 and the peripheral surface 102 of the pillar 100 is the air layer 60, but the present invention is not limited to this. An edge cutting plate material such as a plate-shaped material 210 made of styrofoam or the like may be sandwiched between the inner wall 52A of the vertical hole 52 and the peripheral surface 102 of the pillar 100.

In this case, an edge cutting plate material (for example, a plate-shaped material 210 made of styrofoam or the like) is attached along the peripheral surface 102 of the pillar 100, and concrete is cast in that state to construct the shielding wall 50. Then, the edge cutting plate material may be left buried in the shielding wall 50 as it is.

Further, in the above embodiment, the side surface 104 of the pillar 100 is inclined with respect to the wall surface 50A of the shielding wall 50 and intersects with the radiation S incident on the shielding wall 50, but the present invention is not limited to this. The pillar 100 may be rectangular or circular. Further, the side surface 104 of the pillar 100 may be parallel to the radiation S.

Further, the present invention can be applied to a shielding wall other than the radiotherapy room 20.

Further, it can be carried out in various embodiments without departing from the gist of the present invention.

50 Shielding wall 50A Wall surface 52 Vertical hole 52A Inner wall 60 Air layer 100 Pillar 104 Side side 200 Edge cutting member S Radiation

Claims (4)

A shielding wall that shields radiation and
In the vertical hole formed in the shielding wall, a pillar provided with a gap in the inner wall of the vertical hole, and
Building structure with. In a plan view, the side surfaces of the pillars are inclined with respect to the wall surface of the shielding wall and intersect with the radiation incident on the shielding wall.
The building structure according to claim 1. The gap between the peripheral surface of the pillar and the inner wall of the vertical hole is an air layer.
The building structure according to claim 1 or 2. The process of providing the edge cutting member along the peripheral surface of the pillar,
A process of placing concrete around the pillar to construct a shielding wall with the edge cutting member provided on the peripheral surface of the pillar.
The process of pulling out the edge cutting member and
How to build a shielded wall with.

Images