CN219280979U - Ionizing radiation shielding composite wall - Google Patents
Ionizing radiation shielding composite wall Download PDFInfo
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- CN219280979U CN219280979U CN202223340371.3U CN202223340371U CN219280979U CN 219280979 U CN219280979 U CN 219280979U CN 202223340371 U CN202223340371 U CN 202223340371U CN 219280979 U CN219280979 U CN 219280979U
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Abstract
The utility model belongs to the technical field of ionizing radiation shielding, and discloses an ionizing radiation shielding composite wall body which comprises a plurality of concrete layers and a plurality of steel plate layers, wherein the steel plate layers and the concrete layers are arranged in parallel, and the concrete layers and the steel plate layers are sequentially staggered along the thickness direction of the concrete layers. The plurality of steel plate layers can obviously improve the whole shielding effect; and the arrangement of a plurality of concrete layers makes the thickness of each concrete layer less, belongs to ordinary concrete. Therefore, the ionizing radiation shielding composite wall body provided by the utility model is changed from mass concrete in the prior art into common concrete, and avoids temperature cracks caused by large temperature difference between the inside and outside of the mass concrete in the solidification period, thereby ensuring the shielding effect and shortening the required maintenance time.
Description
Technical Field
The utility model belongs to the technical field of ionizing radiation shielding, and particularly relates to an ionizing radiation shielding composite wall.
Background
Neutron source experimental equipment, proton treatment equipment, boron neutron radiotherapy equipment and the like can generate a strong neutron field during operation, so that the safety of staff and the public is ensured, the damage of neutrons to instrument equipment is reduced, and enough neutron shielding walls are needed around the equipment to block neutrons. According to the requirements of regulations, the dose equivalent rate of the surrounding of the shielding wall body at a position 30cm away from the wall surface is lower than 2.5 mu Sv/h. Therefore, the shielding wall body has the use functions of supporting, separating rooms and the like, and has good neutron shielding performance.
Currently, for strong neutron fields, very thick neutron shielding walls are often required. For example, the shielding wall thickness of proton therapy equipment is typically over 2 meters, even up to 3-4 meters. The concrete wall with the thickness is used as mass concrete, the surface coefficient of the concrete wall is smaller, the heat release of cement hydration is concentrated, and the internal temperature rise is faster. When the temperature difference between the inside and the outside of the concrete is large, the concrete can generate temperature cracks, and the shielding effect is affected. The required curing time of the concrete wall body with the thickness is longer than that of common concrete.
Therefore, there is a need for an ionizing radiation shielding composite wall that solves the above-mentioned technical problems.
Disclosure of Invention
The utility model aims to provide an ionizing radiation shielding composite wall body, which is used for solving the technical problems that the shielding effect is easily influenced by cracking during the solidification of concrete and the maintenance time is long.
To achieve the purpose, the utility model adopts the following technical scheme:
an ionizing radiation shielding composite wall comprising:
a plurality of concrete layers;
the concrete layer and the steel plate layers are sequentially staggered in the thickness direction of the concrete layer.
As a preferable technical scheme of the ionizing radiation shielding composite wall, the ionizing radiation shielding composite wall further comprises separation steel plates, wherein a plurality of separation steel plates are arranged in each concrete layer at intervals in sequence along the length direction of the concrete layer, the separation steel plates are connected with the steel plate layers adjacent to the concrete layer, and each concrete layer is separated into a plurality of unit concrete layers by a plurality of separation steel plates in the concrete layer.
As a preferable technical scheme of the ionizing radiation shielding composite wall, a plurality of separation steel plates in the concrete layer are arranged in a staggered manner along the thickness direction.
As an preferable technical scheme of the ionizing radiation shielding composite wall, the ionizing radiation shielding composite wall further comprises a connecting steel plate, and one ends of at least two steel plate layers in the length direction are simultaneously connected with the connecting steel plate.
As a preferable technical scheme of the ionizing radiation shielding composite wall, the two ends of the steel plate layer in the length direction are connected with the connecting steel plates.
As a preferable technical scheme of the ionizing radiation shielding composite wall, one end of all the steel plate layers is connected with the connecting steel plate.
As a preferable technical scheme of the ionizing radiation shielding composite wall, the connecting steel plates are of a bending structure.
As a preferable technical scheme of the ionizing radiation shielding composite wall, the steel plate layer comprises a plurality of fasteners and a plurality of unit steel plates, the unit steel plates are sequentially connected end to end along the length direction, waist-shaped holes extending along the length direction are formed in two ends of the unit steel plates, and every two adjacent waist-shaped holes of the unit steel plates are connected through the fasteners.
As an optimized technical scheme of the ionizing radiation shielding composite wall, the steel plate layer further comprises a gasket, the fastener penetrates through the gasket, and the gasket covers the outer side of the waist-shaped hole.
As a preferable technical scheme of the ionizing radiation shielding composite wall, two steel plate layers positioned at two ends of the thickness direction can respectively enclose two outer concrete pouring areas with templates at two sides, and the outer concrete pouring areas can form the outermost concrete layer through pouring concrete;
every two adjacent steel plate layers enclose an intermediate concrete pouring area, and the intermediate concrete pouring area can form the inner concrete layer through pouring concrete.
The utility model has the beneficial effects that:
the utility model provides an ionizing radiation shielding composite wall body which comprises a plurality of concrete layers and a plurality of steel plate layers, wherein the steel plate layers and the concrete layers are mutually parallel, and the concrete layers and the steel plate layers are sequentially staggered along the thickness direction of the concrete layers. The plurality of steel plate layers can obviously improve the whole shielding effect; and the arrangement of a plurality of concrete layers makes the thickness of each concrete layer less, belongs to ordinary concrete. Therefore, the ionizing radiation shielding composite wall provided by the utility model is changed from the mass concrete in the prior art into the common concrete, so that the temperature cracks caused by large temperature difference between the inside and outside of the mass concrete in the solidification period are avoided, the shielding effect is ensured, and the required maintenance time is shortened.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic view in partial cross section of an ionizing radiation shielding composite wall according to an embodiment of the present utility model;
FIG. 2 is a schematic illustration of a portion of a cross-section of an ionizing radiation shielding composite wall provided in an embodiment of the present utility model prior to casting;
FIG. 3 is a schematic diagram II of a partial cross section of an ionizing radiation shielding composite wall provided by an embodiment of the present utility model before casting;
FIG. 4 is a schematic diagram II in partial cross section of an ionizing radiation shielding composite wall according to an embodiment of the present utility model;
FIG. 5 is a partial top view of a steel sheet layer of an ionizing radiation shielding composite wall provided by an embodiment of the present utility model;
fig. 6 is a front view of a unit steel plate provided by an embodiment of the present utility model;
FIG. 7 is a schematic view of a structure of an ionizing radiation shielding composite wall at a joint according to an embodiment of the present utility model;
FIG. 8 is a schematic view of another construction of an ionizing radiation shielding composite wall at a splice provided by an embodiment of the present utility model;
fig. 9 is a schematic view of another structure of an ionizing radiation shielding composite wall at a joint according to an embodiment of the present utility model.
In the figure:
10. a template; 20. an outer layer concrete pouring area; 30. an intermediate concrete placement area;
1. a concrete layer; 2. a steel plate layer; 3. connecting steel plates; 4. separating steel plates;
21. a unit steel plate; 22. a fastener; 23. a gasket;
211. waist-shaped holes.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "mounted" are to be construed broadly, and may be, for example, mounted, connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or may be in communication with one another or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides an ionizing radiation shielding composite wall, which includes a plurality of concrete layers 1 and a plurality of steel plate layers 2, wherein the steel plate layers 2 and the concrete layers 1 are arranged in parallel, and the concrete layers 1 and the steel plate layers 2 are sequentially staggered along the thickness direction of the concrete layers 1.
Since the ionizing radiation shielding composite wall body of the embodiment comprises the plurality of concrete layers 1 and the plurality of steel plate layers 2, the plurality of steel plate layers 2 can remarkably improve the whole shielding effect; the thickness of each concrete layer 1 is smaller, and the concrete is common concrete, namely, the large-volume concrete in the prior art is changed into common concrete, so that temperature cracks caused by large temperature difference between the inside and outside of the large-volume concrete in the solidification period are avoided, the shielding effect is ensured, the required maintenance time is shortened, the construction and maintenance are convenient, and the concrete has the advantages of a certain assembly type building.
Specifically, both outer walls of the ionizing radiation shielding composite wall are concrete layers 1. Namely, the outermost side in the thickness direction is the concrete layer 1, so that the firmness of connection between the ionizing radiation shielding composite wall body and the indoor top surface and the ground is ensured. It will be appreciated that one steel sheet layer 2 is provided between every two concrete layers 1, and therefore the number of concrete layers 1 is one more than the number of steel sheet layers 2.
Specifically, in the present embodiment, the concrete layer 1 is provided with six, and the steel plate layer 2 is provided with five.
Specifically, as shown in fig. 2, two steel plate layers 2 located at both ends in the thickness direction can enclose two outer concrete placement areas 20 with the form plates 10 at both sides, respectively, and the outer concrete placement areas 20 can form the outermost concrete layer 1 by placing concrete; each two adjacent steel plate layers 2 enclose an intermediate concrete placement area 30, the intermediate concrete placement area 30 being capable of forming an inner concrete layer 1 by placing concrete. The steel sheet layer 2 functions as a formwork, and although the number of concrete layers 1 is increased, the number of formworks is not required to be increased.
More specifically, as shown in fig. 3, the form 10 is fastened to the outermost steel plate layer 2 by bolting, and the fixation of the form 10 is achieved.
Specifically, cold water can be injected into the middle concrete placement area 30 and the outer concrete placement area 20, and when the ionizing radiation shielding composite wall is built, concrete is placed in part of the outer concrete placement area 20 and/or part of the middle concrete placement area 30 for concrete curing, and cold water is injected into the rest of the outer concrete placement area 20 and the middle concrete placement area 30 in the process, so that the heat dissipation process of the concrete is accelerated, and therefore, the heat dissipation process of the ionizing radiation shielding composite wall can be accelerated.
Preferably, the ionizing radiation shielding composite wall provided in this embodiment may be cast in a staggered manner during construction, and as shown in fig. 2, two outer concrete casting areas 20 and four middle concrete casting areas 30 are sequentially, from left to right, a first casting area, a second casting area, a third casting area, a fourth casting area, a fifth casting area and a sixth casting area. And pouring concrete in the first pouring area, the third pouring area and the fifth pouring area for concrete maintenance, and pouring cold water in the second pouring area, the fourth pouring area and the sixth pouring area for accelerating the heat dissipation process of the concrete in the process. And the second pouring area, the fourth pouring area and the sixth pouring area can be poured with concrete for concrete maintenance, and cold water is injected into the first pouring area, the third pouring area and the fifth pouring area in the process to accelerate the heat dissipation process of the concrete.
Specifically, the ionizing radiation shielding composite wall provided in this embodiment further includes a separation steel plate 4, a plurality of separation steel plates 4 are provided in each concrete layer 1 at intervals in sequence along the length direction of the concrete layer 1, the separation steel plates 4 are connected to the steel plate layer 2 adjacent to the concrete layer 1, and each concrete layer 1 is separated into a plurality of unit concrete layers by a plurality of separation steel plates 4 therein. Because the ionizing radiation shielding composite wall has a longer length, that is, the length of the concrete layer 1 is longer, and it is inconvenient to cast and form once during construction, as shown in fig. 3, in the construction stage, a plurality of separation steel plates 4 are disposed in the middle concrete casting area 30 and the outer concrete casting area 20, so that the middle concrete casting area 30 and the outer concrete casting area 20 are separated into a plurality of shorter unit casting areas, each unit casting area is separately cast and formed into a shorter unit concrete layer, and thus, the casting convenience is improved. Moreover, due to the arrangement of the separation steel plates 4, the connection strength between the steel plate layers 2 is improved, and the structural strength of the ionizing radiation shielding composite wall is further improved.
Optionally, a separator steel plate 4 is welded to the steel plate layer 2; alternatively, the separation steel plate 4 is connected to the steel plate layer 2 through a connecting piece, and the connecting piece is a bolt or a screw; alternatively, the separator steel sheet 4 and the steel sheet layer 2 are integrally formed.
More specifically, the partition steel plates 4 in the plurality of concrete layers 1 are arranged offset in the thickness direction. That is, in the thickness direction, any two separation steel plates 4 are not right opposite, and rays are prevented from passing through the right separation steel plates 4, so that the shielding effect of the ionizing radiation shielding composite wall body on the rays is ensured. The radiation described in the patent scheme of the utility model can be neutron radiation or photon.
Preferably, for the ultra-long ionizing radiation shielding composite wall body arranged in the ultra-long machine room, the separation steel plate 4 is arranged at the stress concentration position of the concrete layer 1, so that the wall body is prevented from cracking at the stress concentration position.
Specifically, as shown in fig. 3 and 4, the ionizing radiation shielding composite wall provided in this embodiment further includes a connection steel plate 3, and one end in the length direction of at least two steel plate layers 2 is simultaneously connected to the connection steel plate 3. The arrangement of the connecting steel plates 3 improves the connection strength between the steel plate layers 2, and further improves the structural strength of the ionizing radiation shielding composite wall body.
Optionally, the connecting steel plate 3 is welded to the steel plate layer 2; alternatively, the connecting steel plate 3 is connected to the steel plate layer 2 through a connecting piece, and the connecting piece is a bolt or a screw; alternatively, the connecting steel plate 3 and the steel plate layer 2 are integrally formed.
Specifically, in the present embodiment, one end of all the steel plate layers 2 is connected to the connecting steel plate 3. By the arrangement, the connection strength between the steel plate layers 2 is further improved, and the structural strength of the ionizing radiation shielding composite wall is further improved.
Specifically, the connecting steel plates 3 are connected to both ends of the steel plate layer 2 in the longitudinal direction. So set up for connecting steel sheet 3 and steel sheet layer 2 connect and form the box body structure, the structural strength of box body structure is high, has further improved ionizing radiation shielding composite wall's structural strength. In addition, as shown in fig. 2, before pouring concrete, the connecting steel plate 3 at one end, the connecting steel plate 3 at the other end and the two adjacent steel plate layers 2 enclose an intermediate concrete pouring area 30, a template 10 is not required, and the construction operation is convenient.
Specifically, the thicknesses of the concrete layers 1 are the same, and the setting is such that the curing molding time of the concrete layers 1 in the construction stage is basically the same, so that the construction period of the ionizing radiation shielding composite wall is shortened, the strength of the concrete layers 1 is uniform, and the integral strength of the ionizing radiation shielding composite wall is ensured. The thicknesses of the plurality of steel plate layers 2 are the same, so that the heat dissipation effect of the steel plate layers 2 on the concrete layer 1 is basically the same, the construction period of the ionizing radiation shielding composite wall is shortened, the strength of the steel plate layers 2 is uniform, and the integral strength of the ionizing radiation shielding composite wall is ensured.
Specifically, as shown in fig. 5 and 6, the steel plate layer 2 includes a plurality of fasteners 22 and a plurality of unit steel plates 21, the plurality of unit steel plates 21 are sequentially connected end to end along the length direction, the two ends of the unit steel plates 21 are provided with waist-shaped holes 211 extending along the length direction, and the waist-shaped holes 211 of each two adjacent unit steel plates 21 are connected by the fasteners 22. The arrangement of the waist-shaped holes 211 enables the adjacent two unit steel plates 21 to move in opposite directions or opposite directions along the length direction when being subjected to the expansion deformation force of the concrete in the forming process of the concrete layer 1, so that the dislocation deformation of the joint of the two materials is prevented, and the quality of the composite wall is ensured. In this embodiment, the fastener 22 includes a bolt and a nut.
Further specifically, both ends of the unit steel plate 21 are provided with a plurality of waist-shaped holes 211 which are sequentially provided at intervals in the height direction. Two adjacent unit steel plates 21 are connected through a plurality of fasteners 22, so that the stability of connection is ensured.
More specifically, the steel plate layer 2 further includes a spacer 23, the fastener 22 is inserted through the spacer 23, and the spacer 23 covers the outer side of the waist-shaped hole 211. The spacer 23 improves the locking degree of the fastener 22, and covers the waist-shaped holes 211, so that concrete on two sides of the unit steel plate 21 is prevented from flowing to the other side through the waist-shaped holes 211, and normal molding of the concrete layer 1 is ensured. The spacer 23 is made of copper sheet or steel sheet. In this embodiment, two gaskets 23 are provided and cover the two sides of the waist-shaped hole 211 respectively to prevent concrete from entering the waist-shaped hole 211.
Specifically, the thickness of the concrete layer 1 is less than 1m. Namely, the concrete layer 1 belongs to common concrete, has smaller temperature difference between the inside and the outside, and is not easy to generate temperature cracks, thereby ensuring the shielding effect.
Specifically, as shown in fig. 7 to 9, the connecting steel plate 3 has a bent structure. The setting makes the end of the ionizing radiation shielding composite wall body in the length direction be the bending line with the joints of other walls, improves the joint strength of the ionizing radiation shielding composite wall body and other walls, and prevents rays from passing through the joints, thereby further ensuring the ray shielding effect of the ionizing radiation shielding composite wall body.
More specifically, as shown in fig. 7 and 8, the seam is in the form of a broken line; as shown in fig. 9, the seam is in a circular arc shape, and of course, other shapes are also possible, and will not be described in detail here.
Optionally, two ends of the concrete layer 1 in the height direction are respectively in bending lines with the seam between the ground and the top surface, similar to the seam formed by the connecting steel plates 3, and are used for preventing rays from passing through the seam, so that the ray shielding effect of the ionizing radiation shielding composite wall is further ensured.
Specifically, the ionizing radiation shielding composite wall provided in this embodiment is constructed as follows:
firstly, a steel plate layer 2, a connecting steel plate 3 and a separating steel plate 4 are made into a box body structure;
then, the templates 10 are installed at both sides of the box structure to form a structure as shown in fig. 3;
and finally, casting concrete in the first casting area, the third casting area and the fifth casting area for concrete curing, wherein cold water is injected into the second casting area, the fourth casting area and the sixth casting area in the process, and after the concrete curing in the first casting area, the third casting area and the fifth casting area is completed, the cold water in the second casting area, the fourth casting area and the sixth casting area is discharged, and the concrete is cast in the second casting area, the fourth casting area and the sixth casting area for concrete curing until the curing is completed.
In the above steps, concrete may be poured into the second pouring area, the fourth pouring area and the sixth pouring area to perform concrete curing, in which cold water is poured into the first pouring area, the third pouring area and the fifth pouring area, and after the concrete curing in the second pouring area, the fourth pouring area and the sixth pouring area is completed, the cold water in the first pouring area, the third pouring area and the fifth pouring area is discharged, and concrete is poured into the first pouring area, the third pouring area and the fifth pouring area to perform concrete curing until the curing is completed.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The ionizing radiation shielding composite wall body is characterized by comprising:
a plurality of concrete layers (1);
the concrete layer (1) and the steel plate layers (2) are sequentially staggered along the thickness direction of the concrete layer (1).
2. The ionizing radiation shielding composite wall according to claim 1, further comprising a partitioning steel plate (4), wherein a plurality of said partitioning steel plates (4) are provided in each of said concrete layers (1) at intervals in order along the longitudinal direction of said concrete layers (1), said partitioning steel plates (4) being connected to said steel plate layers (2) adjacent to said concrete layers (1), each of said concrete layers (1) being partitioned into a plurality of unit concrete layers by a plurality of said partitioning steel plates (4) therein.
3. The ionizing radiation shielding composite wall according to claim 2, wherein said separation steel plates (4) in a plurality of said concrete layers (1) are arranged in a staggered manner in said thickness direction.
4. The ionizing radiation shielding composite wall according to claim 1, further comprising a connecting steel plate (3), wherein one ends in the longitudinal direction of at least two of said steel plate layers (2) are simultaneously connected to said connecting steel plate (3).
5. The ionizing radiation-shielding composite wall according to claim 4, wherein both ends in the longitudinal direction of the steel plate layer (2) are connected with the connection steel plates (3).
6. The ionizing radiation shielding composite wall according to claim 4, wherein one end of all the steel plate layers (2) is connected to the connecting steel plate (3).
7. The ionizing radiation-shielding composite wall according to claim 4, wherein the connecting steel plates (3) are of a bent structure.
8. The ionizing radiation shielding composite wall according to claim 1, wherein the steel plate layer (2) comprises a plurality of fasteners (22) and a plurality of unit steel plates (21), the unit steel plates (21) are sequentially connected end to end along the length direction, waist-shaped holes (211) extending along the length direction are formed in two ends of the unit steel plates (21), and the waist-shaped holes (211) of each two adjacent unit steel plates (21) are connected through the fasteners (22).
9. The ionizing radiation shielding composite wall according to claim 8, wherein said steel plate layer (2) further comprises a spacer (23), said fastener (22) is inserted through said spacer (23), and said spacer (23) covers the outside of said waist-shaped hole (211).
10. The ionizing radiation-shielding composite wall according to any one of claims 1 to 9, wherein two of the steel plate layers (2) located at both ends in the thickness direction can enclose two outer concrete placement areas (20) with the templates (10) at both sides, respectively, the outer concrete placement areas (20) being capable of forming the outermost concrete layer (1) by placing concrete;
every two adjacent steel plate layers (2) enclose an intermediate concrete casting area (30), and the intermediate concrete casting area (30) can form the inner concrete layer (1) through casting concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223340371.3U CN219280979U (en) | 2022-12-12 | 2022-12-12 | Ionizing radiation shielding composite wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223340371.3U CN219280979U (en) | 2022-12-12 | 2022-12-12 | Ionizing radiation shielding composite wall |
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| CN219280979U true CN219280979U (en) | 2023-06-30 |
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| CN202223340371.3U Active CN219280979U (en) | 2022-12-12 | 2022-12-12 | Ionizing radiation shielding composite wall |
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