US20240218656A1 - Semi-fabricated composite shielding shell with ultra-high performance concrete (uhpc) - Google Patents
Semi-fabricated composite shielding shell with ultra-high performance concrete (uhpc) Download PDFInfo
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- US20240218656A1 US20240218656A1 US18/558,326 US202118558326A US2024218656A1 US 20240218656 A1 US20240218656 A1 US 20240218656A1 US 202118558326 A US202118558326 A US 202118558326A US 2024218656 A1 US2024218656 A1 US 2024218656A1
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- layer
- uhpc
- shielding shell
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
Definitions
- the thickness of the reinforced concrete (RC) shielding shell is relatively large and its construction period is long, while the thickness of the steel plate-concrete (SC) shielding wall is relatively small, its construction is difficult and its cost for construction, operation and maintenance is high.
- the present invention can solve the above technical problems by adopting the following technical solutions.
- the RC layer is a reinforced concrete layer casted with ordinary-strength concrete and internally provided with RC layer main reinforcements and RC layer tension reinforcements.
- the studs are made of high-strength carbon steel or low alloy steel.
- the connectors include but are not limited to tension reinforcements and bolts.
- the RC layer 2 is casted with ordinary-strength concrete, and the RC layer 2 is internally provided with RC layer main reinforcements 5 and RC layer tension reinforcements 6 .
- the RC layer main reinforcements 5 of the RC layer 2 , the RC layer tension reinforcements 6 of the RC layer 2 , and the constructional steel reinforcements 8 of the UHPC layer 1 are implemented by hot-rolled ribbed steel reinforcements for industrial buildings, including but not limited to HRB400E steel reinforcements.
- connection method for the semi-fabricated composite shielding shell with the back anti-crack panel of the present invention is as follows: the UHPC layer 1 (including the connectors 7 and the constructional steel reinforcements 8 ) is installed in place; the back anti-crack panel 3 (including the studs 4 ) is installed in place; the RC layer main reinforcements 5 and the RC layer tension reinforcements 6 are installed; and the RC layer 2 is finally concreted.
- the UHPC layer 1 In use, when the main structure of the building is struck by a projectile at a high speed after the shielding shell has been arranged according to the aforementioned connection manner, the UHPC layer 1 , the RC layer 2 , and the back anti-crack panel 3 work together at the impacted site.
- the UHPC layer 1 has higher strength and toughness, and is not prone to breakage and splashing under high-speed impact, and the back anti-crack panel 3 prevents the presence of scabs on the back, and can better maintain the overall stress performance of the impacted site, thereby reducing the damage to the main structure caused by the impact of the projectile.
- a thickness of the shielding shell of the present invention can be greatly reduced, thus saving the space size of the building and reducing the construction cost.
- the UHPC is used instead of steel plate on the side of the building with protection requirements, which can reduce the difficulty of construction, significantly reduce the overall cost, and greatly reduce the maintenance cost in the operation and maintenance stage (the steel plate in the SC shielding shell needs frequent cleaning and painting maintenance).
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Building Environments (AREA)
Abstract
The purpose of the present invention is to disclose a semi-fabricated composite shielding shell with ultra-high performance concrete (UHPC), comprising an UHPC layer, a RC layer, and a back anti-crack panel. The RC layer is arranged between the UHPC layer and the back anti-crack panel, and the RC layer and the UHPC layer are connected to each other by means of connectors. Compared with the prior art, the semi-fabricated composite shielding shell has the advantages that: the UHPC layer, instead of a steel plate, is used on the side of a building having a protection requirement, damage is generally limited to the UHPC layer, and main stress reinforcements of the RC layer cannot be affected; the sizes and contours of respective components (the UHPC layer, the RC layer, and the back anti-crack panel) of the shielding shell can be flexibly adjusted according to the shape and protection requirement of the building; the rigidity-density ratio can be flexibly adjusted; the thickness of the shielding shell is greatly reduced; and the space size of the building is reduced, and construction costs are reduced. The shielding shell is suitable for the protection requirement of the building against a projectile, thus the purpose of the present invention is achieved.
Description
- The present invention relates to a semi-fabricated composite shielding shell with ultra-high performance concrete (UHPC), and in particular to a semi-fabricated composite shielding shell with ultra-high performance concrete (UHPC), reinforced concrete (RC), and a back anti-crack panel.
- In order to deal with the threat of large projectiles, buildings with special protection requirements generally use shielding shells on the surface thereof to protect the main structure thereof. Taking a nuclear power plant as an example, in order to protect a reactor from the effects of external events (impact of a large projectile, tornado, etc.), it is necessary to construct a containment (i.e., a shielding shell) outside the reactor. Common outer shielding shells for a nuclear power plant reactor include: traditional reinforced concrete (RC) shielding shells and steel plate-concrete (SC) shielding walls, the latter of which have been widely used in recent years. In order to achieve the same protective effect, the thickness of the reinforced concrete (RC) shielding shell is relatively large and its construction period is long, while the thickness of the steel plate-concrete (SC) shielding wall is relatively small, its construction is difficult and its cost for construction, operation and maintenance is high.
- Therefore, there is a special need for a semi-fabricated composite shielding shell with ultra-high performance concrete (UHPC) to solve the above-mentioned existing problems.
- The purpose of the present invention is to provide a semi-fabricated composite shielding shell with ultra-high performance concrete (UHPC), so as to address the shortcomings in the prior art.
- The present invention can solve the above technical problems by adopting the following technical solutions.
- A semi-fabricated composite shielding shell with ultra-high performance concrete (UHPC) comprises an UHPC layer, a RC layer, and a back anti-crack panel. The RC layer is arranged between the UHPC layer and the back anti-crack panel, and the RC layer and the UHPC layer are connected to each other by means of connectors.
- In one embodiment of the present invention, a number of studs are welded to the back anti-crack panel, and the back anti-crack panel is connected to the RC layer through the studs.
- In one embodiment of the present invention, the UHPC layer is composed of prefabricated panels made of ultra-high performance concrete and connected to each other in a fabricated structure with staggered seams, and constructional steel reinforcements are arranged in the UHPC layer.
- In one embodiment of the present invention, the RC layer is a reinforced concrete layer casted with ordinary-strength concrete and internally provided with RC layer main reinforcements and RC layer tension reinforcements.
- In one embodiment of the present invention, the studs are made of high-strength carbon steel or low alloy steel.
- In one embodiment of the present invention, the RC layer main reinforcements of the RC layer, the RC layer tension reinforcements of the RC layer, and the constructional steel reinforcement of the UHPC layer are HRB400E steel reinforcements.
- In one embodiment of the present invention, the connectors include but are not limited to tension reinforcements and bolts.
- When the semi-fabricated composite shielding shell with the back anti-crack panel according to the present invention is struck by a projectile at a relatively high speed, the UHPC layer, the RC layer, and the back anti-crack panel work together at the impacted site. Compared with the existing technology, the UHPC layer is used instead of a steel plate on the side of a building requiring protection, the damage is generally confined to the UHPC layer, and the main reinforcements of the RC layer are not affected. The sizes and contours of respective components (the UHPC layer, the RC layer, and the back anti-crack panel) of the shielding shell can be flexibly adjusted according to the shape and protection requirement of the building; the rigidity-density ratio can be flexibly adjusted; the thickness of the shielding shell is greatly reduced; and the space size of the building is reduced, and construction costs are reduced. The shielding shell is suitable for the protection requirement of the building against a projectile, and the purpose of the present invention is achieved.
- The features of the present invention can be clearly understood by referring to the drawings of the present invention and the detailed description of the following preferred embodiments.
-
FIG. 1 is a schematic structural diagram of the semi-fabricated composite shielding shell with the back anti-crack panel according to the present invention; and -
FIG. 2 is a schematic horizontal cross-sectional view along the A-A line inFIG. 1 . - In order to facilitate understanding of the technical means, design features, goals and effects achieved by the present invention, the present invention will be further described below in conjunction with specific illustrations.
- As shown in
FIG. 1 andFIG. 2 , the semi-fabricated composite shielding shell with back anti-crack panel of the present invention includes an UHPC layer 1, a RC layer 2, and a backanti-crack panel 3; the RC layer 2 is arranged between the UHPC layer 1 and the backanti-crack panel 3, and the RC layer 2 and the UHPC layer 1 are connected to each other by connectors 7. - In this embodiment, a number of studs 4 are welded to the back
anti-crack panel 3, and the backanti-crack panel 3 is connected to the RC layer 2 through the studs 4. The studs 4 are made of high-strength carbon steel or low alloy steel. - In this embodiment, the UHPC layer 1 is formed by prefabricating with ultra-high performance concrete and connecting with staggered seams into a fabricated structure in a common constructional manner, and constructional steel reinforcements 8 are arranged in the UHPC layer 1.
- In this embodiment, the RC layer 2 is casted with ordinary-strength concrete, and the RC layer 2 is internally provided with RC layer
main reinforcements 5 and RC layer tension reinforcements 6. - In this embodiment, the RC layer
main reinforcements 5 of the RC layer 2, the RC layer tension reinforcements 6 of the RC layer 2, and the constructional steel reinforcements 8 of the UHPC layer 1 are implemented by hot-rolled ribbed steel reinforcements for industrial buildings, including but not limited to HRB400E steel reinforcements. - In this embodiment, the connectors 7 connect the UHPC layer 1 and the RC layer 2, and are prefabricated together with the UHPC layer 1. The connectors 7 may be tension reinforcements or bolts, and may include but are not limited to the tension reinforcements and bolts.
- The connection method for the semi-fabricated composite shielding shell with the back anti-crack panel of the present invention is as follows: the UHPC layer 1 (including the connectors 7 and the constructional steel reinforcements 8) is installed in place; the back anti-crack panel 3 (including the studs 4) is installed in place; the RC layer
main reinforcements 5 and the RC layer tension reinforcements 6 are installed; and the RC layer 2 is finally concreted. - In use, when the main structure of the building is struck by a projectile at a high speed after the shielding shell has been arranged according to the aforementioned connection manner, the UHPC layer 1, the RC layer 2, and the back
anti-crack panel 3 work together at the impacted site. The UHPC layer 1 has higher strength and toughness, and is not prone to breakage and splashing under high-speed impact, and the backanti-crack panel 3 prevents the presence of scabs on the back, and can better maintain the overall stress performance of the impacted site, thereby reducing the damage to the main structure caused by the impact of the projectile. - In use, the above-mentioned structural form is usually used to make a cylindrical or square main shell, and a semi-conical, semi-ellipsoidal or other shaped dome is added thereon according to engineering requirements.
- The semi-fabricated composite shielding shell with the back anti-crack panel according to the present invention has the following beneficial effects:
- 1. Compared with the conventional reinforced concrete (RC) shielding shell, in order to prevent the impact of projectiles, a thickness of the shielding shell of the present invention can be greatly reduced, thus saving the space size of the building and reducing the construction cost.
- 2. Compared with the conventional steel plate-concrete (SC) shielding shell, the UHPC is used instead of steel plate on the side of the building with protection requirements, which can reduce the difficulty of construction, significantly reduce the overall cost, and greatly reduce the maintenance cost in the operation and maintenance stage (the steel plate in the SC shielding shell needs frequent cleaning and painting maintenance).
- 3. The damage is usually confined to the UHPC layer and does not affect the main stress reinforcements of the RC layer, so that it is easier to be repaired compared with the traditional RC shielding shell or SC shielding shell.
- 4. The sizes and contours of the respective components (the UHPC layer, the RC layer and the back anti-crack panel) of the shielding shell can be flexibly adjusted according to the shape and protection requirement of a building, and the engineering application value is extensive. In particular, by adjusting the thickness of each component, the stiffness-density ratio can be flexibly adjusted, and then the response spectrum of the building surface can be flexibly adjusted, which has special significance for the design of nuclear power plants.
- 5. It is not only suitable for the protection requirements against projectiles outside the building, but also can be used to meet the protection requirements against projectiles inside the building by interchanging the positions of the UHPC and the back panel in the shielding shell.
- The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. What is described in the above-mentioned embodiments and the description only illustrates the principle of the present invention. Without departing from the essence and scope of the present invention, the present invention will also have various modifications and improvements which fall within the claimed scope of the present invention as defined by the appended claims and their equivalents.
Claims (8)
1. A semi-fabricated composite shielding shell, comprising an ultra-high performance concrete (UHPC) layer, a RC layer, and a back anti-crack panel, wherein the RC layer is arranged between the UHPC layer and the back anti-crack panel, and the RC layer and the UHPC layer are connected to each other by means of connectors.
2. The semi-fabricated composite shielding shell according to claim 1 , wherein a number of studs are welded to the back anti-crack panel, and the back anti-crack panel is connected to the RC layer through the studs.
3. The semi-fabricated composite shielding shell according to claim 1 , wherein the UHPC layer is composed of prefabricated panels made of ultra-high performance concrete and connected to each other in a fabricated structure with staggered seams, and constructional steel reinforcements are arranged in the UHPC layer.
4. The semi-fabricated composite shielding shell according to claim 1 , wherein the RC layer is a reinforced concrete layer casted with ordinary-strength concrete and internally provided with RC layer main reinforcements and RC layer tension reinforcements.
5. The semi-fabricated composite shielding shell according to claim 2 , wherein the studs are made of high-strength carbon steel or low alloy steel.
6. The semi-fabricated composite shielding shell according to claim 4 , wherein the RC layer main reinforcements of the RC layer and the RC layer tension reinforcements of the RC layer are HRB400E steel reinforcements.
7. The semi-fabricated composite shielding shell according to claim 1 , wherein the connectors comprise tension reinforcements and bolts.
8. The semi-fabricated composite shielding shell according to claim 3 , wherein the constructional steel reinforcements of the UHPC layer are HRB400E steel reinforcements.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110161263.0 | 2021-02-05 | ||
| CN202110161263.0A CN113027209A (en) | 2021-02-05 | 2021-02-05 | Semi-fabricated ultra-high performance concrete (UHPC) combined shielding shell |
| PCT/CN2021/113734 WO2022166163A1 (en) | 2021-02-05 | 2021-08-20 | Semi-fabricated ultra-high performance concrete (uhpc) combined shielding housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20240218656A1 true US20240218656A1 (en) | 2024-07-04 |
Family
ID=76460131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/558,326 Pending US20240218656A1 (en) | 2021-02-05 | 2021-08-20 | Semi-fabricated composite shielding shell with ultra-high performance concrete (uhpc) |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20240218656A1 (en) |
| CN (1) | CN113027209A (en) |
| WO (1) | WO2022166163A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027209A (en) * | 2021-02-05 | 2021-06-25 | 上海核工程研究设计院有限公司 | Semi-fabricated ultra-high performance concrete (UHPC) combined shielding shell |
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-
2021
- 2021-02-05 CN CN202110161263.0A patent/CN113027209A/en active Pending
- 2021-08-20 US US18/558,326 patent/US20240218656A1/en active Pending
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| US2355947A (en) * | 1941-10-13 | 1944-08-15 | Bondy Otto | Storage tank or container and like shell structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022166163A1 (en) | 2022-08-11 |
| CN113027209A (en) | 2021-06-25 |
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