JP2015114107A - Radiation shielding wall construction form and radiation shielding wall construction method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radiation shield wall construction molding formed integrally with concrete, capable of constructing a radiation shield wall that has a simple structure, is easy to be assembled, has a high seismic performance and can surely shield radiation, and to provide a radiation shield wall construction method using the same.SOLUTION: A plurality of radiation shield wall construction moldings are continuously arranged in vertical and horizontal directions, and then the plurality thereof are continuously arranged so as to oppose to each other with a constant interval in the vertical and horizontal directions, thereby forming a space to construct a radiation shield wall. The molding includes: a molding body having a C-shape horizontal cross section, formed by extending side wall parts perpendicularly to a rectangular flat plate part from both side ends of the flat plate part; upper and lower flange parts formed on upper and lower ends of the molding body so as to extend horizontally toward inside; perpendicular parts formed between the upper and lower flange parts; a plurality of upper and lower positioning claw members extending perpendicularly from front ends of the upper and lower flange parts upward and downward, or toward one of the directions; a plurality of left and right positioning claw members extending horizontally from side ends of the perpendicular parts toward left and right, or toward one of the directions; and a radiation shielding material arranged on the inner surface of the flat plate part.

Description

  The present invention relates to a radiation shielding wall construction form used for construction of a radiation shielding wall or the like of a storage room for storing a radiological room or a low-concentration radioactive contaminant, and a radiation shielding wall construction method using the same.

  Conventionally, in order to build a radiation shielding wall, a formwork is installed in the opening, and after placing concrete with radiation shielding material and solidifying it, a method of removing the formwork or radiation reinforced with steel plates A construction method has been proposed in which shielding boards reinforced with steel plates are laminated and assembled.

JP 2009-133639 A JP 2007-271297 A

  However, the conventional radiation shielding wall construction has a problem that it takes time to assemble the formwork, the radiation cannot be sufficiently shielded without increasing the wall thickness, and the seismic performance is not sufficient.

  The present invention solves the problems of the prior art and is integrated with concrete capable of constructing a radiation shielding wall that is simple in structure, easy to assemble, has high earthquake resistance, and can reliably shield radiation. An object of the present invention is to provide a radiation shielding wall construction form and a radiation shielding wall construction method using the same.

  In order to solve the above-described problem, the form for constructing a radiation shielding wall according to the present invention includes a plurality of columns in the vertical direction and the horizontal direction, and a plurality of columns in the vertical direction and the horizontal direction so as to face each other at a predetermined interval. In a radiation shielding wall construction mold for forming a space for constructing a radiation shielding wall, a horizontal cutting plane in which a side wall portion extending at right angles to the flat plate portion is formed at both ends of the flat plate portion is a U-shaped mold body. An upper and lower flange portion formed so as to extend horizontally inwardly on the upper and lower sides of the mold body, a vertical portion formed between the upper and lower flange portions, and vertically up or down from the front end of the upper and lower flange portion A plurality of vertical positioning claw members extending horizontally, a plurality of left and right positioning claw members extending horizontally from the side end of the vertical portion to either the left or right, and a radiation shielding material disposed on the inner surface of the flat plate portion, To provide And butterflies.

  The radiation shielding wall construction mold according to the present invention is characterized in that a heat insulating material is disposed on the radiation shielding material.

  The radiation shielding wall construction mold according to the present invention has a plurality of vertical reinforcing bar holes through which the vertical reinforcing bars are inserted in the upper and lower flange parts, and a plurality of horizontal reinforcing bar holes through which the horizontal reinforcing bars are inserted. A plurality of width reinforcing bar holes through which the reinforcing bars in the width direction are inserted are formed in the vertical portion.

  The radiation shielding wall construction form of the present invention includes a vertical reinforcing bar, a horizontal reinforcing bar, and a width reinforcing bar that are helical reinforcing bars, and the lowest and first of the plurality of radiation shielding wall construction forms that are arranged in the vertical direction. Accommodates nuts to be screwed to the spiral reinforcing bars around the vertical reinforcing bar holes located above and around the horizontal reinforcing bar holes located at the right and left ends of a plurality of radiation shielding wall construction molds arranged in the horizontal direction. A concave portion to be formed is formed.

  In the radiation shielding wall construction method of the present invention, a plurality of radiation shielding wall construction molds according to any one of claims 1 to 4 are provided on one side in the longitudinal direction and the lateral direction, and a predetermined interval is provided. A radiation shielding wall construction space is formed by connecting a plurality of radiation shielding wall forming molds in the vertical and horizontal directions facing the other side of the wall, and a width reinforcing bar hole, a vertical reinforcing bar hole and a horizontal reinforcing bar are formed. Insert multiple width reinforcing bars, vertical reinforcing bars and width reinforcing bars into the holes, and screw multiple nuts to both ends of each reinforcing bar to fix the radiation shielding wall construction formwork, and put concrete in the radiation shielding wall construction space. And solidifying a plurality of the radiation shielding wall forming molds and the concrete which are continuously provided.

  Further, the radiation shielding wall construction method of the present invention is characterized in that a fiber sheet is attached to the outer surface of the flat plate portion of the continuous radiation shielding wall construction form.

In a radiation shielding wall construction form that forms a space for constructing a radiation shielding wall by continuously arranging a plurality of longitudinal and lateral directions and facing each other at a predetermined interval in the longitudinal direction and the lateral direction. A horizontal cut surface in which side wall portions extending at right angles to the flat plate portion are formed at both ends of the flat portion, and a vertical flange formed so as to extend horizontally inwardly above and below the mold body A vertical portion formed between the upper and lower flange portions, a plurality of vertical positioning pawl members extending vertically up or down from the front end of the upper and lower flange portions, and horizontally from the side end of the vertical portion Equipped with a plurality of left and right positioning claw members that extend to the left and right or either side, and a radiation shielding material disposed on the inner surface of the flat plate portion, making it easy to assemble and radiation shielding performance integrated with concrete It is possible to construct a high radiation shielding wall.
By placing a heat insulating material on the radiation shielding material, when concrete is placed in the formwork, the radiation shielding material is prevented from being damaged and dew condensation due to the temperature difference of the constructed radiation shielding wall surface is prevented. Is possible.
For vertical reinforcing bars, multiple vertical reinforcing bar holes for inserting vertical reinforcing bars are formed in the upper and lower flange parts, multiple horizontal reinforcing bar holes for inserting horizontal reinforcing bars are formed in the side wall parts, and reinforcing bars in the width direction are inserted in the vertical part. By forming a plurality of holes, it is possible to fix a plurality of continuous radiation molds, and it is possible to construct a radiation shielding wall having high earthquake resistance by integrating concrete.
Vertical reinforcing bars, horizontal reinforcing bars and width reinforcing bars are spiral reinforcing bars, and around the vertical reinforcing bar holes located at the bottom and top of a plurality of radiation shielding wall construction forms arranged in the vertical direction. A radiation shielding wall provided continuously by forming a recess that accommodates a nut that is screwed to the spiral reinforcing bar around the holes for the horizontal reinforcing bars located at the right end and the left end of the plurality of radiation shielding wall construction molds that are provided continuously. It is possible to prevent protrusions on the upper and lower surfaces and the left and right surfaces of the building form.
A plurality of the radiation shielding wall construction molds according to any one of claims 1 to 4 are provided on one side in a longitudinal direction and a lateral direction, and facing the other side at a predetermined interval, the radiation shielding wall. Multiple building frames are arranged in the vertical and horizontal directions to form a space for building a radiation shielding wall, and the width reinforcing bar, vertical reinforcing bar and width reinforcing bar are placed in the width reinforcing bar hole, vertical reinforcing bar hole and horizontal reinforcing bar hole. Inserted, fixed a plurality of radiation shielding wall construction form that was screwed onto both ends of each reinforcing bar, and placed concrete in the radiation shielding wall construction space, solidified, and arranged continuously By integrating multiple radiation shielding wall construction forms and concrete, multiple radiation shielding wall construction forms are fixed and integrated with cast concrete, providing high radiation shielding performance and earthquake resistance. It is possible to build a radiation shielding wall in a short working time That.
By sticking the fiber sheet on the outer surface of the flat plate portion of the radiation shielding wall construction form that is continuously provided, the appearance of the radiation shielding wall surface can be improved and the strength of the radiation shielding wall can be improved.

It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention.

  An embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of a radiation shielding wall forming mold 1 according to the present invention, FIG. 2 is a top view, FIG. 3 is a front view, and FIG. 4 is a cross-sectional view of FIG.

  The radiation shielding wall construction form 1 has a form body having a U-shaped horizontal cut surface having a left side wall part 3 and a right side wall part 4 extending at right angles from both side ends of a rectangular flat plate part 2. An upper flange portion 5 and a lower flange portion 6 extending horizontally inward are formed on the upper and lower sides of the mold body. A left vertical portion 7 is formed at a portion where the front end portion of the left side wall portion 3 and the upper and lower flange portions 5 and 6 are in contact with each other, and a right vertical portion 8 is formed at a portion where the right wall portion 4 and the upper and lower flange portions 5 and 6 are in contact with each other. The

  A plurality of upper positioning pawl members 9 extending vertically upward at the tip of the upper flange portion 5 are fixed. A plurality of lower positioning claw members 10 that extend vertically downward to the tip of the lower flange portion 6 are fixed. The upper positioning claw member 9 and the lower positioning claw member 10 are fixed at positions where they do not interfere with each other when they are arranged in the vertical direction. Further, when a plurality of radiation shielding wall construction molds 1 are connected in the vertical direction, a lower positioning claw member 10 is disposed on the lower flange portion 6 of the radiation shielding wall construction mold 1 located at the bottom. In addition, the upper positioning claw member 9 is not disposed on the upper flange portion 5 of the radiation shielding wall construction form 1 located at the top.

  A plurality of left positioning claw members 11 extending horizontally in the horizontal direction are fixed to the side edges of the left vertical portion 7. A right positioning claw member 12 extending horizontally and horizontally is fixed to a side end of the right vertical portion 8. The left positioning claw member 11 and the right positioning claw member 12 are fixed at positions where they do not interfere with each other when they are arranged in the lateral direction. Further, when the radiation shielding wall construction mold 1 is continuously arranged in the horizontal direction, the left positioning claw member 11 is not disposed in the left vertical portion 7 of the radiation shielding wall mold construction mold 1 located at the left end. The right positioning claw member 12 is not disposed in the right vertical portion 8 of the radiation shielding wall mold construction mold 1 located at the right end.

  A plurality of vertical reinforcing bar holes 13 are formed in the upper and lower flange portions 5 and 6 in parallel with the flat plate portion 2. A plurality of horizontal reinforcing bar holes 14 are formed in the left and right side wall portions 3 and 4 in the vertical direction. The vertical reinforcing bar hole 13 and the horizontal reinforcing bar hole 14 are formed at positions where the vertical reinforcing bar and the horizontal reinforcing bar do not interfere with each other. A plurality of width reinforcing bar holes 15 are formed in the vertical direction in the left vertical portion 7 and the right vertical portion 8.

  As shown in FIG. 4, the radiation shielding material 16 is disposed inside the flat plate portion 2 of the mold body. The radiation shielding material 16 is a lead plate or a lead-free board. The lead-free board is made of a barium sulfate mixed gypsum board mixed with barium sulfate and gypsum and reinforced with glass fiber, and is characterized by high radiation shielding effect and light weight.

  A heat insulating material 17 is disposed on the radiation shielding material 16. The heat insulating material 17 is polystyrene foam or the like. The heat insulating material 17 has a function of preventing the radiation shielding material 16 from being damaged due to the concrete placement when the concrete is placed in the mold and preventing condensation due to a change in the temperature of the constructed radiation shielding wall surface. Have.

  A radiation shielding wall construction method using the radiation shielding wall construction form 1 will be described with reference to FIGS. 5, 6, 7, and 8.

  First, a spiral reinforcing bar is used to form a plurality of width reinforcing bar holes 15 formed in the left vertical part 7 and the right vertical part 8 of the radiation shielding mold 1 on one side and the radiation shielding mold 1 arranged to face the other side. The width reinforcing bar 18 is inserted, nuts 21 and 21 are screwed to the front and back of the left vertical portion 7 and the right vertical portion 8, and the space between the radiation shielding wall construction molds 1 and 1 is designed. Hold to a thickness.

  In the embodiment shown in FIG. 5, three pairs of radiation shielding wall construction molds 1 that are spaced apart by the width reinforcing bars 18 are arranged in a row in the horizontal direction and three in the vertical direction. When the plurality of radiation shielding wall construction molds 1 are continuously provided in the vertical and horizontal directions, the vertical positioning claw members 9 and 10 and the left and right positioning claw members 11 and 12 are accurately positioned. The upper positioning claw member 9 is not disposed on the uppermost one of the radiation shielding wall construction molds 1 provided continuously, and the lower positioning claw member 10 is disposed on the lowermost one. Do not place. Further, the left positioning claw member 11 is not disposed at the left end, and the right positioning claw member 12 is not disposed at the right end. By doing in this way, the positioning claw member is not protruded up and down and left and right of the plurality of radiation shielding wall forming molds 1 provided continuously.

  The number of the radiation shielding wall construction molds 1 provided continuously varies depending on the size of the radiation shielding wall to be constructed. Longitudinal reinforcing bars 13 made of spiral reinforcing bars are inserted into the vertical reinforcing bar holes 13 formed in the upper and lower flange parts 5 and 6 of the radiation shielding wall construction mold 1 arranged in the vertical and horizontal directions. Is fixed with a nut 21.

  As shown in FIG. 7, it is located in the periphery of the hole 13 for the vertical reinforcement formed in the upper flange part 5 located in the uppermost among the radiation shielding wall construction molds 1 that are continuously provided, and in the lowermost part. A nut 21 is accommodated around the vertical reinforcing bar hole 13 formed in the lower flange portion 6, and a concave portion is formed so that the upper end portion and the lower end portion of the vertical reinforcing bar 13 do not protrude from the surfaces of the upper flange portion 5 and the lower flange portion 6. Form.

  As shown in FIG. 6, in the radiation shielding wall construction form 1 that is continuously provided, the periphery of the horizontal rebar hole 14 formed in the left side wall portion 35 positioned at the left end and the right side wall portion 4 positioned at the right end. A nut 21 is accommodated around the formed horizontal reinforcing bar hole 14, and a recess is formed so that the end of the horizontal reinforcing bar 14 does not protrude from the surfaces of the left side wall part 3 and the right side wall part 4. By doing in this way, it becomes possible to eliminate the member which protrudes from the upper and lower and left and right surfaces of the plurality of radiation shielding wall construction molds 1 provided in series.

  FIG. 8 is a view showing a horizontal cut surface showing a state in which the width reinforcing bar 18, the vertical reinforcing bar 19, and the horizontal reinforcing bar 20 are arranged on a plurality of the radiation shielding wall construction molds 1 arranged and fixed with nuts 21. In this state, a plurality of the radiation shielding wall forming molds 1 are fixed, so if they can be transported from the size, weight, etc., they are assembled at the factory up to the state shown in FIG. Work efficiency can be increased by transporting to the site and fitting it at the construction position. After placing concrete, the concrete and the width reinforcing bar 18, the vertical reinforcing bar 19 and the horizontal reinforcing bar 20 are integrated with the plurality of radiation shielding wall construction molds 1 arranged, and then a continuous radiation shielding wall construction which becomes a wall surface is constructed. A fiber sheet is stuck on the flat plate part 2 of the mold 1 for use. By sticking the fiber sheet, the aesthetic appearance of the radiation shielding wall can be improved and the strength can be improved.

  As described above, according to the radiation shielding wall construction form of the present invention and the radiation shielding wall construction method using the same, the structure is simple, the assembling work is easy, the seismic performance is high, and the radiation shielding can be surely performed. It becomes possible to construct a simple radiation shielding wall.

  1: Radiation shielding wall construction form, 2: Flat plate part, 3: Left side wall part, 4: Right side wall part, 5: Upper flange part, 6: Lower flange part, 7: Left vertical part, 8: Right vertical part 9: Upper positioning claw member, 10: Lower positioning claw member, 11: Left positioning claw member, 12: Right positioning claw member, 13: Vertical reinforcing bar hole, 14: Horizontal reinforcing bar hole, 15: For wide reinforcing bar Hole, 16: radiation shielding material, 17: heat insulating material, 18: width reinforcing bar, 19: vertical reinforcing bar, 20: horizontal reinforcing bar, 21: nut,

In order to solve the above-described problem, the form for building a radiation shielding wall according to the present invention includes a plurality of continuous lines in the vertical direction and the horizontal direction, and a plurality of lines in the vertical direction and the horizontal direction facing each other at regular intervals. In a radiation shielding wall construction form for forming a space for constructing a radiation shielding wall, a horizontal cut surface in which a side wall portion extending at right angles to the flat plate portion is formed on both side ends of a rectangular flat plate portion is a U-shaped form A main body, an upper and lower flange portion formed so as to extend horizontally in the upper and lower sides of the mold main body, a vertical portion formed between the upper and lower flange portions, and vertically up or down from the front end of the upper and lower flange portion A plurality of vertical positioning claw members extending to one side, a plurality of left and right positioning claw members extending horizontally from the side end of the vertical portion to the left or right, and a radiation shield disposed on the inner surface of the flat plate portion and wood, the radiation shielding And a heat insulating material disposed on the, the vertical rebar hole for inserting the longitudinal reinforcing bars to said upper and lower flanges to form a plurality, a horizontal reinforcing bar holes for inserting the transverse reinforcing bars plurality formed in the side wall portion, A plurality of width reinforcing bar holes through which the reinforcing bars in the width direction are inserted are formed in the vertical portion .

Further, the radiation shielding wall construction mold of the present invention is a peripheral and lateral direction of the vertical reinforcing bar holes positioned at the bottom and top of a plurality of radiation shielding wall construction molds arranged in the vertical direction. A recess for accommodating a nut is formed around a hole for a horizontal reinforcing bar located at the right end and the left end of a plurality of radiation shielding wall construction molds that are connected to the frame.

In the radiation shielding wall construction method of the present invention, a plurality of radiation shielding wall construction molds according to claim 1 or 2 are provided on one side in the longitudinal direction and the lateral direction, and the other is disposed at a certain interval. A radiation shielding wall construction space is formed by connecting a plurality of the radiation shielding wall construction molds according to claim 1 or 2 in a longitudinal direction and a lateral direction so as to face each other, and a hole for a width reinforcing bar, for a longitudinal reinforcing bar Fix the multiple radiation shielding wall construction form by inserting width bars, vertical bars and width bars through the holes and the holes for the horizontal bars, and connecting the reinforcing bars as a spiral bar and screwing nuts to both ends of each bar. The concrete is characterized in that concrete is placed in a radiation shielding wall construction space and solidified to integrate the plurality of radiation shielding wall construction forms and the concrete.

In a radiation shielding wall construction form that forms a space for constructing a radiation shielding wall by providing a plurality of longitudinal and lateral directions in a row and a plurality of longitudinal and lateral directions facing each other at regular intervals. A horizontal cut surface in which side wall portions extending at right angles to the flat plate portion are formed on both side ends of the flat plate portion is formed so as to extend horizontally inwardly above and below the mold main body. An upper and lower flange portion, a vertical portion formed between the upper and lower flange portions, a plurality of vertical positioning pawl members extending vertically and / or vertically from a front end of the upper and lower flange portions, and a side end of the vertical portion A plurality of left and right positioning claw members extending horizontally to the left or right, or a radiation shielding material disposed on the inner surface of the flat plate portion, and a heat insulating material disposed on the radiation shielding material , Vertical iron on the upper and lower flanges The vertical reinforcement holes forming a plurality of through, the horizontal reinforcing bar holes for inserting the transverse reinforcing bars to said side wall portion forming a plurality, forming a plurality of width rebar hole for inserting the width direction of reinforcing bars to the vertical section that As a result, it is easy to assemble, and it is possible to construct a radiation shielding wall with high radiation shielding performance by integrating with concrete. Ri Do is possible to construct a high-performance radiation shield wall, when concrete is to the radiation shield walls structuring mold inside, to prevent breakage of the radiation shielding material, the temperature of the constructed radiation shield wall surface Condensation due to the difference can be prevented.
A plurality of radiation shielding wall construction molds connected in the periphery and in the lateral direction around the vertical rebar holes located at the bottom and top of a plurality of radiation shielding wall construction molds arranged in the vertical direction By forming recesses for accommodating nuts around the holes for the horizontal reinforcing bars located at the right and left ends of the frame, there are no protrusions on the top, bottom, left and right surfaces of the radiation shielding wall construction form when connecting them. It becomes possible to do.
The radiation shielding wall construction mold according to claim 1 or 2 is provided in plural on one side in a longitudinal direction and a lateral direction, and faces the other side at a predetermined interval, according to claim 1 or 2. The radiation shielding wall construction space is formed by connecting a plurality of radiation shielding wall construction forms in the vertical and horizontal directions to form the radiation shielding wall construction space. and the width reinforcing bar inserted, each rebar a plurality of radiation shielding wall construction for mold fixing was continuously provided by screwing the nut on both ends of each reinforcing bar and spiral muscle, striking the concrete radiation shield walls built for space By installing and solidifying, and integrating the multiple radiation shielding wall construction molds and concrete, the multiple radiation shielding wall construction molds are fixed and integrated with the cast concrete Shorten the radiation shielding wall with high radiation shielding performance and earthquake resistance It is possible to construct between.
By sticking the fiber sheet on the outer surface of the flat plate portion of the radiation shielding wall construction form that is continuously provided, the appearance of the radiation shielding wall surface can be improved and the strength of the radiation shielding wall can be improved.

Claims (6)

  In a radiation shielding wall construction form that forms a space for constructing a radiation shielding wall by providing a plurality of longitudinal and lateral directions in a row and a plurality of longitudinal and lateral directions facing each other at regular intervals. A horizontal cut surface in which side wall portions extending at right angles to the flat plate portion are formed on both side ends of the flat plate portion is formed so as to extend horizontally inwardly above and below the mold main body. An upper and lower flange portion, a vertical portion formed between the upper and lower flange portions, a plurality of vertical positioning pawl members extending vertically and / or vertically from a front end of the upper and lower flange portions, and a side end of the vertical portion A radiation shielding wall construction form, comprising: a plurality of left and right positioning claw members extending horizontally to the left or right, or a radiation shielding material disposed on an inner surface of the flat plate portion.   The form for building a radiation shielding wall according to claim 1, wherein a heat insulating material is disposed on the radiation shielding material.   A plurality of vertical rebar holes for inserting vertical rebars are formed in the upper and lower flange portions, a plurality of horizontal rebar holes for inserting horizontal rebars are formed in the side wall portions, and a width reinforcing bar for inserting rebars in the width direction in the vertical portion 3. The radiation shielding wall construction form according to claim 1 or 2, wherein a plurality of holes are formed.   Vertical reinforcing bars, horizontal reinforcing bars and width reinforcing bars are spiral reinforcing bars, and around the vertical reinforcing bar holes located at the bottom and top of a plurality of radiation shielding wall construction forms arranged in the vertical direction. 2. A recess for accommodating a nut to be screwed to a helical rebar is formed around a hole for a horizontal rebar located at a right end and a left end of a plurality of radiation shielding wall construction molds provided in series. The mold for building a radiation shielding wall according to any one of 3.   A plurality of the radiation shielding wall construction molds according to any one of claims 1 to 4 are provided on one side in a longitudinal direction and a lateral direction, and the radiation shielding wall construction is performed by facing the other side at a predetermined interval. Form a radiation shielding wall construction space by connecting multiple formwork in the vertical and horizontal directions, and insert the width reinforcing bar, vertical reinforcing bar and horizontal reinforcing bar through the hole for the vertical reinforcing bar, the vertical reinforcing bar and the horizontal reinforcing bar. Then, a plurality of radiation shielding wall construction molds that are continuously provided by screwing nuts to both ends of each reinforcing bar are fixed, concrete is placed in the radiation shielding wall construction space, and solidified. A radiation shielding wall construction method characterized by integrating concrete with a form for building radiation shielding walls.   6. The radiation shielding wall construction method according to claim 5, wherein a fiber sheet is attached to the outside of the flat plate portion of the radiation shielding wall construction form that is continuously provided.

Images