Laminated slab component of integrated steel reinforcement framework

Abstract

The utility model provides a laminated slab component integrated with a steel reinforcement framework. The laminated slab component comprises a prefabricated bottom plate, the steel reinforcement framework and a plurality of concrete ribs. The concrete ribs are formed on the prefabricated bottom plate and arranged at intervals in the transverse direction of the prefabricated bottom plate, the length direction of each concrete rib is parallel to the longitudinal direction of the prefabricated bottom plate, and each concrete rib is composed of a rib and a plurality of rib blocks located on the two sides of the rib and arranged at intervals. The steel reinforcement framework is composed of upper transverse bars, upper longitudinal bars, lower transverse bars, lower longitudinal bars and tie bars, the lower transverse bars and the lower longitudinal bars of the steel reinforcement framework are pre-buried in the prefabricated bottom plate, the upper transverse bars and the upper longitudinal bars penetrate through the concrete ribs, and the tie bars of the steel reinforcement framework are pre-buried in the concrete ribs. In the construction stage, the prefabricated bottom plate, the concrete ribs and the steel bars serve as a whole and jointly bear the component dead weight, the wet concrete dead weight, the additional steel bar dead weight and the construction live load in the construction stage. The prefabricated part and post-poured concrete are well combined in the using stage, and the purpose of performance equivalent to cast-in-place can be achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of nuclear power plant structures, and in particular to a composite plate component with an integrated steel bar skeleton. Background Art

[0002] At present, the concrete structure of nuclear power plants is generally cast-in-place reinforced concrete, which requires a large amount of reinforcement engineering, formwork engineering and cast-in-place concrete engineering work on site. Nuclear power plants have thick floor slabs, heavy loads, high structural layers, and small available construction space. The following prominent problems exist when using traditional cast-in-place methods:

[0003] 1) Large equipment needs to be in place before floor construction, and the equipment is close to the surrounding walls, resulting in limited available construction space under the floor. There are many practical difficulties in setting up traditional formwork and temporary support systems.

[0004] 2) The structural layer is tall and the construction load is large. When using traditional formwork and temporary support systems, the temporary support materials are large in amount and the structure is complex, the construction measures cost is high, and there may be safety risks.

[0005] 3) When using the traditional cast-in-place construction method, the workload of formwork and temporary support is large, the workload of on-site steel bar tying is large, and there are problems such as long construction period, large labor demand, material waste and serious environmental pollution. Utility Model Content

[0006] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0007] To this end, the present invention provides a composite plate component with an integrated steel frame, which is particularly suitable for ultra-thick floor slabs with a thickness of 300 mm and above. It can realize the combined stress of the concrete base plate and the concrete ribs, and has the advantages of light weight, reasonable stress, no support, and convenient construction. It can effectively shorten the construction period, reduce transportation costs, give full play to the advantages of prefabricated structures, and improve the industrialization level of nuclear power plant construction.

[0008] In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

[0009] The present disclosure provides a composite plate component with an integrated steel frame, comprising a prefabricated bottom plate, a steel frame and a plurality of concrete ribs;

[0010] The prefabricated bottom plate is a concrete plate, with its long side as the longitudinal direction and its short side as the transverse direction;

[0011] A plurality of concrete ribs are formed on the precast bottom plate and are arranged at intervals along the transverse direction of the precast bottom plate, the length direction of each concrete rib is parallel to the longitudinal direction of the precast bottom plate, and a single concrete rib is composed of a rib and a plurality of rib blocks arranged at intervals on both sides of the rib;

[0012] The steel bar skeleton is composed of a plurality of upper transverse bars, upper longitudinal bars, lower transverse bars, lower longitudinal bars and tension bars. The lower transverse bars and the lower longitudinal bars are embedded in the precast base plate. The upper transverse bars and the upper longitudinal bars pass through the concrete ribs. The tension bars are embedded in the concrete ribs and connect the corresponding upper longitudinal bars with the lower longitudinal bars. The two ends of the upper transverse bars and the lower transverse bars protrude from the ends of the concrete ribs and the precast base plate respectively to form a first overhanging section. The two ends of the upper longitudinal bars and the lower longitudinal bars protrude from the ends of the concrete ribs and the precast base plate respectively to form a second overhanging section.

[0013] In some embodiments, the prefabricated base plate is rectangular.

[0014] In some embodiments, the transverse spacing of the concrete ribs is set to 200 mm, 300 mm or 400 mm and is adapted to the longitudinal reinforcement spacing, and the longitudinal spacing of the rib blocks is set to 200 mm, 300 mm or 400 mm.

[0015] In some embodiments, the length of the prefabricated base plate is between 3m and 10m.

[0016] In some embodiments, the rib width of the concrete rib is between 50 mm and 100 mm, the rib length of the rib strip is not greater than 1 / 2 of the length of the prefabricated bottom plate, and the rib length of the rib block is between 50 mm and 100 mm.

[0017] In some embodiments, surfaces of the prefabricated bottom plate, the ribs and the rib blocks are all configured to be rough surfaces.

[0018] In some embodiments, the first outwardly extending section of each upper longitudinal rib and the lower longitudinal rib is L-shaped or straight-shaped.

[0019] In some embodiments, the second outwardly extending section of each transverse rib is L-shaped or straight-shaped.

[0020] In some embodiments, additional longitudinal reinforcement is provided at the bottom of the transverse reinforcement between two adjacent concrete ribs according to the stress requirements.

[0021] In some embodiments, the composite slab component is used for floor slabs with a thickness of 300 mm and above.

[0022] The present disclosure has the following advantages:

[0023] (1) Concrete ribs are set above the prefabricated base plate. The concrete ribs and the prefabricated base plate are combined to bear the force, which can greatly increase the unsupported construction span, realize the construction of a larger span without support or with very little support, and save the cost of measures.

[0024] (2) Compared with the traditional composite slab form, it can effectively reduce the amount of truss steel bars used and reduce production costs.

[0025] (3) No formwork is required or less formwork is required during the construction phase, which simplifies the construction difficulty and saves construction costs.

[0026] (4) During the use stage, the contact area between the post-poured concrete and the precast component concrete is large, the bonding performance is good, and the integrity is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional schematic diagram of a composite plate component with an integrated steel reinforcement skeleton provided in an embodiment of the present disclosure.

[0028] Figure 2 for Figure 1 A top view of the composite plate component is shown.

[0029] Figure 3 for Figure 2 AA section view in.

[0030] Figure 4 for Figure 2 BB cross-section diagram in.

[0031] Figure 5 This is a schematic cross-sectional view of a composite plate component provided by an embodiment of the present disclosure when more longitudinal reinforcements are required.

[0032] In the figure:

[0033] 1. Prefabricated base plate;

[0034] 2. Concrete rib; 21. Rib; 22. Rib block;

[0035] 3. Steel skeleton; 31. Upper transverse reinforcement; 32. Lower transverse reinforcement; 33. Upper longitudinal reinforcement; 34. Lower longitudinal reinforcement; 35. Tension reinforcement; 36. First extension section; 37. Second extension section. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] On the contrary, the present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application as defined by the claims. Further, in order to make the public have a better understanding of the present application, some specific details are described in detail in the detailed description of the present application below. Those skilled in the art can fully understand the present application without the description of these details.

[0038] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the basis or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0040] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] See also Figure 1 to Figure 4, the composite plate component of the embodiment of the present disclosure includes a prefabricated bottom plate 1, a steel skeleton 3 and a plurality of concrete ribs 2;

[0042] The precast bottom plate 1 is a rectangular concrete plate, with the long side of the precast bottom plate 1 as the longitudinal direction and the short side as the transverse direction. In order to improve the bonding performance between the concrete precast bottom plate and the post-cast concrete, a rough surface is provided on the surface of the precast bottom plate;

[0043] A plurality of concrete ribs 2 are formed on the precast bottom plate 1 and are arranged at intervals along the transverse direction of the precast bottom plate 1. The length direction of each concrete rib 2 is parallel to the longitudinal direction of the precast bottom plate 1. A single concrete rib 2 is composed of a rib 21 and a plurality of rib blocks 22 arranged at intervals on both sides of the rib 21. That is, along the length direction of the concrete rib 2, the rib 21 is located in the middle of the concrete rib, and the plurality of rib blocks 22 are located on both sides of the rib 21 and are arranged at intervals along the length direction of the concrete rib. The bottom of each concrete rib 2 is connected to the top of the precast bottom plate 1.

[0044] The steel skeleton 3 is composed of a plurality of upper transverse bars 31, upper longitudinal bars 33, lower transverse bars 32, lower longitudinal bars 34 and tension bars 35. The lower transverse bars 32 and lower longitudinal bars 34 at the bottom of the steel skeleton 3 are embedded in the precast base plate 1, the upper transverse bars 31 and upper longitudinal bars 33 at the top of the steel skeleton 3 pass through the concrete rib 2, the tension bars 35 of the steel skeleton 3 are embedded in the concrete rib 2 and connect the corresponding upper longitudinal bars 33 with the lower longitudinal bars 34, the two ends of the upper transverse bars 31 and the lower transverse bars 32 protrude from the ends of the concrete rib 2 and the precast base plate 1 respectively to form a first overhanging section 36, and the two ends of the upper longitudinal bars 33 and the lower longitudinal bars 34 protrude from the ends of the concrete rib 2 and the precast base plate 1 respectively to form a second overhanging section 37.

[0045] In some embodiments, the prefabricated base plate 1 can play the role of not removing the formwork during the construction stage. During the stress stage, the prefabricated base plate 1 and the cast-in-place concrete form a whole and bear the stress together. The prefabricated base plate 1 is suitable for floors with a thickness of 300 mm or more and a length range of 3 m to 10 m. The width and thickness of the prefabricated base plate 1 need to be calculated and determined according to actual conditions.

[0046] In some embodiments, the concrete ribs 2 provided on the precast base plate 1 have two structural forms, one is a continuous strip rib and the other is an independent block rib. The presence of the concrete ribs 2 can improve the rigidity of the precast base plate 1 and increase the span of the precast base plate 1. The strip ribs and the block ribs are arranged at intervals, which can play the role of keyways and strengthen the bonding ability with cast-in-place concrete. On the other hand, the vacancies between the concrete ribs can reduce the deadweight of the precast base plate. The lateral spacing between adjacent concrete ribs can be set to 200mm, 300mm, 400mm, which should be adapted to the longitudinal reinforcement spacing; the longitudinal spacing between adjacent rib blocks can be set to 200mm, 300mm, 400mm. The rib width of the concrete ribs should be between 50mm and 100mm, the rib length of the strip ribs should not be greater than 1 / 2 of the precast base plate length, and the rib length of the block ribs should be between 50mm and 100mm.

[0047] Furthermore, in order to improve the bonding performance between the concrete rib 2 and the post-cast concrete, the surface of each rib 21 and rib block 22 is set to be a rough surface.

[0048] In some embodiments, the lower longitudinal reinforcement 34 in the steel skeleton 3 is located at the bottom of the lower transverse reinforcement 32, the length direction of the lower transverse reinforcement 32 is parallel to the transverse direction of the precast bottom plate 1, the length direction of the lower longitudinal reinforcement 34 is parallel to the longitudinal direction of the precast bottom plate 1, and a plurality of lower transverse reinforcements 32 and a plurality of lower longitudinal reinforcements 34 are arranged vertically to form a steel mesh. The upper longitudinal reinforcement 33 in the steel skeleton 3 is located at the bottom of the upper transverse reinforcement 31, the length direction of the upper transverse reinforcement 31 is parallel to the transverse direction of the precast bottom plate 1, the length direction of the upper longitudinal reinforcement 33 is parallel to the longitudinal direction of the precast bottom plate 1, and a plurality of upper transverse reinforcements 31 and a plurality of upper longitudinal reinforcements 33 are arranged vertically to form a steel mesh. The upper end of the tie bar 35 in the steel skeleton 3 is tied to the corresponding upper longitudinal reinforcement 33, and the lower end is tied to the corresponding lower longitudinal reinforcement 34, and is evenly arranged along the length direction of the longitudinal reinforcement. The number and diameter of the steel bars used in the composite plate component should meet the force and structural requirements. During the construction phase, the precast bottom plate 1, concrete ribs 2 and steel skeleton 3 are a whole, jointly bearing the self-weight of the components, the self-weight of wet concrete, the self-weight of additional steel bars and the construction live load. During the use phase, the composite slab components and the post-cast concrete are well combined, and the performance can be equivalent to the cast-in-place.

[0049] Furthermore, the extended sections at both ends of the upper transverse reinforcement 31, the upper longitudinal reinforcement 33, the lower transverse reinforcement 32, and the lower longitudinal reinforcement 34 are exposed on the outside of the concrete rib 2 and the prefabricated bottom plate 1, and are in an L-shape or a straight shape, and are used to connect the support and the adjacent floor slab. The length of the extended section needs to be calculated and determined according to the stress conditions. The extended section of each steel bar is preferably L-shaped. The structure of the L-shaped extended section can strengthen the anchorage of the steel bar and the concrete, and play a role in reducing the anchorage length of the extended section steel bar.

[0050] Further, see Figure 5When the number of upper longitudinal reinforcements 33 and lower longitudinal reinforcements 34 required for the composite plate component is large, additional upper longitudinal reinforcements 38 and additional lower longitudinal reinforcements 39 can be arranged between two adjacent concrete ribs 2, and the additional longitudinal reinforcements are located at the bottom of the transverse reinforcements.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although embodiments of the present disclosure have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A composite plate component with an integrated steel bar skeleton, characterized in that: It includes a prefabricated base plate, a steel frame and a number of concrete ribs; The prefabricated bottom plate is a concrete plate, with its long side as the longitudinal direction and its short side as the transverse direction; A plurality of concrete ribs are formed on the precast bottom plate and are arranged at intervals along the transverse direction of the precast bottom plate, the length direction of each concrete rib is parallel to the longitudinal direction of the precast bottom plate, and a single concrete rib is composed of a rib and a plurality of rib blocks arranged at intervals on both sides of the rib; The steel bar skeleton is composed of a plurality of upper transverse bars, upper longitudinal bars, lower transverse bars, lower longitudinal bars and tension bars. The lower transverse bars and the lower longitudinal bars are embedded in the precast base plate. The upper transverse bars and the upper longitudinal bars pass through the concrete ribs. The tension bars are embedded in the concrete ribs and connect the corresponding upper longitudinal bars with the lower longitudinal bars. The two ends of the upper transverse bars and the lower transverse bars protrude from the ends of the concrete ribs and the precast base plate respectively to form a first overhanging section. The two ends of the upper longitudinal bars and the lower longitudinal bars protrude from the ends of the concrete ribs and the precast base plate respectively to form a second overhanging section.

2. The laminated plate member according to claim 1, characterized in that: The prefabricated bottom plate is rectangular.

3. The laminated plate member according to claim 1, characterized in that: The transverse spacing of the concrete ribs is set to 200mm, 300mm or 400mm and is adapted to the longitudinal reinforcement spacing. The longitudinal spacing of the rib blocks is set to 200mm, 300mm or 400mm.

4. The laminated plate member according to claim 1, characterized in that: The length of the prefabricated bottom plate is between 3m and 10m.

5. The laminated plate member according to claim 1, characterized in that: The rib width of the concrete rib is between 50 mm and 100 mm, the rib length of the rib strip is not greater than 1 / 2 of the length of the prefabricated bottom plate, and the rib length of the rib block is between 50 mm and 100 mm.

6. The laminated plate member according to claim 1, characterized in that: The surfaces of the prefabricated bottom plate, the ribs and the rib blocks are all configured to be rough surfaces.

7. The laminated plate member according to claim 1, characterized in that: The first outward extension section of each upper longitudinal reinforcement and lower longitudinal reinforcement is L-shaped or straight-shaped.

8. The laminated plate member according to claim 1, characterized in that: The second outward extension section of each transverse reinforcement is L-shaped or straight-shaped.

9. The laminated plate member according to claim 1, characterized in that: According to the stress requirements, additional longitudinal reinforcement is arranged between two adjacent concrete ribs and located at the bottom of the transverse reinforcement.

10. The laminated plate member according to any one of claims 1 to 9, characterized in that: The composite slab component is used for floors with a thickness of 300 mm and above.

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