Laminated slab component of integrated steel bar plane truss and abutted seam connection structure of laminated slab component

Abstract

The utility model provides a laminated slab component integrated with steel bar plane trusses and an abutted seam connection structure of the laminated slab component. The laminated slab component comprises a prefabricated bottom plate, a plurality of steel bar plane trusses, upper transverse bars and lower transverse bars. The lower portion of the steel bar plane truss is embedded in the prefabricated bottom plate, the upper portion of the steel bar plane truss is exposed above the prefabricated bottom plate, and the steel bar plane truss is composed of upper longitudinal bars, lower longitudinal bars and belly steel bars connected between the upper longitudinal bars and the lower longitudinal bars. The lower transverse bars are pre-buried in the prefabricated bottom plate and are connected with the lower longitudinal bars to form a lower reinforcing mesh; the upper transverse bars are located above the prefabricated bottom plate and connected with the upper longitudinal bars to form an upper reinforcing mesh. In the construction stage, the steel bar plane trusses, the upper transverse bars and the lower transverse bars form a steel bar framework, and the steel bar framework and the prefabricated bottom plate serve as a whole to jointly bear component self-weight, wet concrete self-weight, additional steel bar self-weight and construction live load in the construction stage. The laminated slab component is simple in structure, high in standardization degree, simple and convenient in connection mode and capable of giving full play to the advantages of an assembly type structure.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power plant structures, and in particular to a composite plate component of an integrated steel bar plane truss and a joint connection structure thereof. 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 proposes a composite plate component with an integrated steel bar plane truss, which is particularly suitable for ultra-thick floor slabs with a thickness of 300 mm and above. It has the advantages of high degree of standardization, simple connection method, no support, and convenient construction. It can effectively shorten the construction period, give full play to the advantages of prefabricated structure, 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] A composite plate component with integrated steel bar plane trusses provided in a first aspect of the present disclosure comprises a prefabricated bottom plate and a plurality of steel bar plane trusses, upper transverse bars and lower transverse bars;

[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] The length direction of each steel plane truss is parallel to the longitudinal direction of the prefabricated bottom plate, and each steel plane truss is arranged at intervals along the transverse direction of the prefabricated bottom plate. The lower part of each steel plane truss is pre-embedded in the prefabricated bottom plate, and the upper part is exposed above the prefabricated bottom plate. Each steel plane truss is composed of an upper longitudinal reinforcement, a lower longitudinal reinforcement, and a web reinforcement connected between the upper longitudinal reinforcement and the lower longitudinal reinforcement. Both ends of the upper longitudinal reinforcement and the lower longitudinal reinforcement respectively protrude from the end of the prefabricated bottom plate to form a first overhanging section.

[0012] The lower transverse reinforcement is embedded in the prefabricated bottom plate, the length direction of each lower transverse reinforcement is parallel to the transverse direction of the prefabricated bottom plate, and is arranged at intervals along the longitudinal direction of the prefabricated bottom plate, the lower transverse reinforcement is connected with the lower longitudinal reinforcement to form a lower steel mesh, and the two ends of each lower transverse reinforcement protrude from the end of the prefabricated bottom plate to form a second extension section;

[0013] The upper transverse reinforcement is located above the prefabricated bottom plate, the length direction of each upper transverse reinforcement is parallel to the transverse direction of the prefabricated bottom plate, and is arranged at intervals along the longitudinal direction of the prefabricated bottom plate. The upper transverse reinforcement is connected with the upper longitudinal reinforcement to form an upper steel mesh.

[0014] In some embodiments, the prefabricated base plate is rectangular.

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

[0016] In some embodiments, in the steel bar plane truss, the web steel bar is formed by bending a single steel bar, and the web steel bar is connected to the upper longitudinal bars and the lower longitudinal bars by welding, tying or snapping.

[0017] In some embodiments, in the reinforced plane truss, the web reinforcement is composed of a plurality of diagonal web members and straight sections, two adjacent diagonal web members form a triangular structure, the straight section is connected to the bottom of the two adjacent triangular structures, and the straight section, adjacent diagonal web members and lower longitudinal reinforcement form an inverted trapezoidal structure.

[0018] In some embodiments, the angle between the diagonal web member and the lower longitudinal reinforcement is between 45° and 60°, and the height of the inverted trapezoidal structure and the length of the straight section are not less than 50 mm.

[0019] In some embodiments, the first outwardly extending section of each upper longitudinal rib and the lower longitudinal rib is L-shaped or straight-shaped.

[0020] In some embodiments, the second outwardly extending section of each lower transverse rib is in a straight line shape, and the end of each upper transverse rib is flush with the end of the prefabricated bottom plate.

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

[0022] A second aspect of the present disclosure provides a joint connection structure of a laminated plate member according to any embodiment of the first aspect of the present disclosure, comprising:

[0023] A first steel sleeve for connecting the ends of the second extended sections of the lower transverse reinforcements of the two composite plate members after aligning them;

[0024] Additional reinforcement is arranged at the end of the upper transverse reinforcement of the composite plate component on one side, the upper transverse reinforcement and the additional reinforcement are connected together through a second reinforcement sleeve, and the additional reinforcement is staggered and overlapped with the upper transverse reinforcement of the composite plate component on the other side;

[0025] A detachable bottom form is arranged at the bottom of the joint of the prefabricated bottom plate, and post-cast concrete is poured on the prefabricated bottom plate to serve as the superimposed layer of the superimposed plate component and to form a whole with the superimposed plate component.

[0026] The present disclosure has the following advantages:

[0027] (1) During the construction phase, the steel skeleton and the prefabricated base plate as a whole bear the self-weight of the components, the self-weight of the wet concrete, the self-weight of the additional steel bars and the live load of the construction. This can greatly increase the unsupported construction span, achieve support-free or minimally supported construction of a larger span, and save measures costs.

[0028] (2) No formwork is required or less formwork is required during the construction phase, which simplifies the construction difficulty.

[0029] (3) The integrated composite plate components have simple structure, high degree of standardization, and simple connection method, which can give full play to the advantages of prefabricated structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional schematic diagram of a composite plate component with an integrated steel bar plane truss provided in an embodiment of the present disclosure.

[0031] Figure 2 for Figure 1 Detailed view of the construction of the composite panel components shown.

[0032] Figure 3 for Figure 2 AA section view in.

[0033] Figure 4 for Figure 1 Three-dimensional schematic diagram of the reinforced plane truss in the composite plate component shown.

[0034] Figure 5 for Figure 1 The structural details of the extended section of the L-shaped longitudinal reinforcement in the composite plate member shown.

[0035] Figure 6 A detailed diagram of the joint structure between adjacent laminated plate components provided in an embodiment of the present disclosure.

[0036] In the figure:

[0037] 1. Prefabricated base plate;

[0038] 2. Reinforced plane truss; 21. Upper longitudinal reinforcement; 22. Lower longitudinal reinforcement; 23. Web reinforcement; 231. Diagonal web member; 232. Straight section; 24. First extension section;

[0039] 3. Upper transverse rib;

[0040] 4. Lower transverse rib; 41. Second extension section;

[0041] 51. first steel sleeve; 52. second steel sleeve;

[0042] 6. Additional reinforcement;

[0043] 7. Removable bottom mold;

[0044] 8. Pour concrete later. DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] See also Figure 1 to Figure 5 , the composite plate component of the embodiment of the present disclosure includes a prefabricated bottom plate 1 and a plurality of steel bar plane trusses 2, upper transverse bars 3 and lower transverse bars 4;

[0051] The precast base plate 1 is a rectangular concrete plate, with the long side of the precast base plate as the longitudinal direction and the short side as the transverse direction. In order to improve the bonding performance between the precast concrete base plate and the post-cast concrete, the upper surface of the precast base plate 1 is a rough surface;

[0052] The length direction of each steel plane truss 2 is parallel to the longitudinal direction of the precast bottom plate 1. Each steel plane truss 2 is arranged at intervals along the transverse direction of the precast bottom plate 1. The lower part of each steel plane truss 2 is embedded in the precast bottom plate 1, and the upper part is exposed above the precast bottom plate 1. Each steel plane truss 2 is composed of an upper longitudinal reinforcement 21, a lower longitudinal reinforcement 22, and a web reinforcement 23 connected between the upper longitudinal reinforcement 21 and the lower longitudinal reinforcement 22. Both ends of the upper longitudinal reinforcement 21 and the lower longitudinal reinforcement 22 protrude from the end of the precast bottom plate 1 to form a first overhanging section 24.

[0053] Each lower transverse reinforcement 4 is embedded in the prefabricated bottom plate 1, and the length direction of each lower transverse reinforcement 4 is parallel to the transverse direction of the prefabricated bottom plate 1, and is arranged at intervals along the longitudinal direction of the prefabricated bottom plate 1. The lower transverse reinforcement 4 is connected with the lower longitudinal reinforcement 22 to form a lower steel mesh, and both ends of the lower transverse reinforcement 4 protrude from the end of the prefabricated bottom plate 1 to form a second overhanging section 41;

[0054] Each upper transverse reinforcement 3 is located above the prefabricated bottom plate 1, and the length direction of each upper transverse reinforcement 3 is parallel to the transverse direction of the prefabricated bottom plate 1, and is arranged at intervals along the longitudinal direction of the prefabricated bottom plate 1. The upper transverse reinforcement 3 is connected to the upper longitudinal reinforcement 21 to form an upper steel mesh, and the end of each upper transverse reinforcement 3 is flush with the end of the prefabricated bottom plate 1.

[0055] 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.

[0056] In some embodiments, the web reinforcement 23 in the single steel bar plane truss 2 is formed by bending a steel bar, and the web reinforcement 23 and the upper longitudinal reinforcement 21 and the lower longitudinal reinforcement 22 can be connected by welding, binding or snap connection.

[0057] Furthermore, the web reinforcement 23 in each steel bar plane truss 2 is respectively composed of a plurality of diagonal web members 231 and a straight section 232. Two adjacent diagonal web members 231 form a triangular structure. The straight section 232 is connected to the bottom of the two adjacent triangular structures. The angle a between each diagonal web member 231 and the lower longitudinal reinforcement 22 is preferably 45° to 60°. The existence of the diagonal web member 231 can serve as a tension bar to improve the shear resistance, and can also support and connect the upper steel mesh. The straight section 232 forms an inverted trapezoidal structure with the adjacent diagonal web members 231 and the lower longitudinal reinforcement 22. The height h of the inverted trapezoidal structure should not be less than 50 mm. The existence of the inverted trapezoidal structure can increase the anchoring strength between the steel bar plane truss 2 and the prefabricated bottom plate 1.

[0058] Furthermore, the first extension section 24 of the upper longitudinal reinforcement 21 and the lower longitudinal reinforcement 22 is exposed on the outside of the prefabricated bottom plate 1, and is in a straight line or L shape, and is used to connect the support. The length of the first extension section 24 needs to be calculated and determined according to the force conditions. The first extension section of each longitudinal reinforcement is preferably L-shaped, and the structure of the L-shaped extension section can strengthen the anchorage of the steel bar and the concrete, and play a role in reducing the anchorage length of the steel bar of the extension section.

[0059] Furthermore, the second outward extension section 41 of the lower transverse reinforcement 4 is exposed on the outside of the prefabricated bottom plate 1 and has a straight shape, and is used for connecting adjacent composite plate components. The length of the second outward extension section 41 is preferably 100 mm.

[0060] In some embodiments, the transverse spacing of the steel bar plane trusses 2 is preferably 200 mm, and the longitudinal spacing of each transverse bar is preferably 200 mm. The diameters of the longitudinal bars, transverse bars and web bars need to be calculated and determined according to the actual situation. In addition, the upper and lower positions of the longitudinal bars and transverse bars are set according to the actual stress conditions of the composite plate component. Specifically, the steel bars whose length direction is parallel to the larger span direction are set at the bottom of the steel bars whose length direction is perpendicular to the smaller span direction, so as to improve the bearing capacity of the composite plate component.

[0061] See also Figure 6 The joint connection structure between adjacent laminated plate components provided by the embodiment of the present disclosure includes:

[0062] The ends of the second extended sections 41 of the lower transverse reinforcements 4 of the two laminated plate members are aligned and connected together using the first reinforcement sleeve 51;

[0063] An additional steel bar 6 is provided at the end of the upper transverse reinforcement 3 of the composite plate component on one side, the upper transverse reinforcement 3 and the additional steel bar 6 are connected together through a second steel bar sleeve 52, and the additional steel bar 6 is staggered and overlapped with the upper transverse reinforcement 3 of the composite plate component on the other side;

[0064] A removable bottom formwork 7 is arranged at the bottom of the joint of the precast bottom plate 1, and post-cast concrete 8 is poured on the precast bottom plate 1 as the overlapping layer of the composite plate component and forms a whole with the composite plate component. After the post-cast concrete reaches the designed strength, the removable bottom formwork 7 is removed.

[0065] 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.

[0066] 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 integrated steel bar plane truss, characterized in that: It includes a prefabricated bottom plate and a number of reinforced plane trusses, upper transverse reinforcement and lower transverse reinforcement; The prefabricated bottom plate is a concrete plate, with its long side as the longitudinal direction and its short side as the transverse direction; The length direction of each steel plane truss is parallel to the longitudinal direction of the prefabricated bottom plate, and each steel plane truss is arranged at intervals along the transverse direction of the prefabricated bottom plate. The lower part of each steel plane truss is pre-embedded in the prefabricated bottom plate, and the upper part is exposed above the prefabricated bottom plate. Each steel plane truss is composed of an upper longitudinal reinforcement, a lower longitudinal reinforcement, and a web reinforcement connected between the upper longitudinal reinforcement and the lower longitudinal reinforcement. Both ends of the upper longitudinal reinforcement and the lower longitudinal reinforcement respectively protrude from the end of the prefabricated bottom plate to form a first overhanging section. The lower transverse reinforcement is embedded in the prefabricated bottom plate, the length direction of each lower transverse reinforcement is parallel to the transverse direction of the prefabricated bottom plate, and is arranged at intervals along the longitudinal direction of the prefabricated bottom plate, the lower transverse reinforcement is connected with the lower longitudinal reinforcement to form a lower steel mesh, and the two ends of each lower transverse reinforcement protrude from the end of the prefabricated bottom plate to form a second extension section; The upper transverse reinforcement is located above the prefabricated bottom plate, the length direction of each upper transverse reinforcement is parallel to the transverse direction of the prefabricated bottom plate, and is arranged at intervals along the longitudinal direction of the prefabricated bottom plate. The upper transverse reinforcement is connected with the upper longitudinal reinforcement to form an upper steel mesh.

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 length of the prefabricated bottom plate is between 3m and 10m.

4. The laminated plate member according to claim 1, characterized in that: In the steel bar plane truss, the web steel bar is formed by bending a steel bar, and the web steel bar is connected to the upper longitudinal bars and the lower longitudinal bars by welding, binding or snapping.

5. The laminated plate member according to claim 1, characterized in that: In the steel bar plane truss, the web reinforcement is composed of a plurality of diagonal web members and straight sections, two adjacent diagonal web members form a triangular structure, the straight section is connected to the bottom of the two adjacent triangular structures, and the straight section, adjacent diagonal web members and lower longitudinal reinforcement form an inverted trapezoidal structure.

6. The laminated plate member according to claim 5, characterized in that: The angle between the diagonal web member and the lower longitudinal reinforcement is between 45° and 60°, and the height of the inverted trapezoidal structure and the length of the straight section are not less than 50 mm.

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 outwardly extending section of each lower transverse reinforcement is in a straight line shape, and the end of each upper transverse reinforcement is flush with the end of the prefabricated bottom plate.

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

10. A joint connection structure of a laminated plate member according to any one of claims 1 to 9, characterized in that: include: A first steel sleeve for connecting the ends of the second extended sections of the lower transverse reinforcements of the two composite plate members after aligning them; Additional reinforcement is arranged at the end of the upper transverse reinforcement of the composite plate component on one side, the upper transverse reinforcement and the additional reinforcement are connected together through a second reinforcement sleeve, and the additional reinforcement is staggered and overlapped with the upper transverse reinforcement of the composite plate component on the other side; A detachable bottom form is arranged at the bottom of the joint of the prefabricated bottom plate, and post-cast concrete is poured on the prefabricated bottom plate to serve as the superimposed layer of the superimposed plate component and to form a whole with the superimposed plate component.

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