Tie structure and nuclear engineering superposed wall body

Abstract

The utility model provides a tie structure and a nuclear engineering superimposed wall, and relates to the technical field of nuclear engineering fabricated buildings. The tie structure comprises a tie bar which comprises a rod part and thread parts located at the two axial ends of the rod part respectively; the tie piece comprises two tie piece bodies, each tie piece body comprises a threaded sleeve and at least two anchor bars, the inner walls of the two threaded sleeves are provided with internal threads and are in threaded connection with the threaded portions of the tie bars respectively, and the at least two anchor bars are arranged on the peripheries of the threaded sleeves and tangent to the peripheral faces of the threaded sleeves. The tie body is used for being pre-buried in a precast concrete slab; the part, close to the rod part, of the threaded part of the tie bar is in threaded connection with an anchoring block, and the tie bar and the anchoring block are connected to form the shear-resistant tie bar.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated buildings for nuclear engineering, and in particular to a tie structure and a composite wall for nuclear engineering. Background Art

[0002] Precast composite shear wall components consist of two precast concrete slabs on either side, and a reinforced steel frame located between the two slabs. The construction process of a composite shear wall structure primarily involves the production and curing of precast composite shear wall components in the factory; transportation to the project site after the precast components reach their designed strength, connection, and installation; and the pouring of post-cast concrete to form the composite shear wall structure. Engineering applications have demonstrated that shear wall systems offer excellent overall performance, save on-site formwork and support, facilitate industrialized production, and offer excellent overall benefits. Combining the advantages of both precast and cast-in-place construction, they have been widely adopted in residential buildings in my country.

[0003] The shear wall of a civil building has a small thickness and a low height, generally with a thickness of 200mm and a height of 3m. During component processing, the precast concrete slabs on both sides can be processed and prefabricated together with the steel skeleton, and the load-bearing steel mesh is buried in the precast concrete blade without the need for additional anchors. However, the shear wall in a nuclear project has a large thickness and a high height, generally with a thickness of 400-800mm and a height of 5-8m. The precast concrete slabs and steel skeletons on both sides need to be processed and prefabricated separately. Therefore, additional anchors are required to tie the precast concrete slabs and steel skeletons on both sides to form an integral prefabricated component. Utility Model Content

[0004] The purpose of the embodiment of the present application is to provide a tie structure for tying the precast concrete slabs and steel skeleton on both sides to form an integral precast component, thereby ensuring that the precast concrete slabs do not crack or fall off during demoulding, transportation, hoisting and on-site concrete pouring of the precast component.

[0005] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] A first aspect of the present application provides a tie structure, comprising: a tie rod, comprising a rod portion and threaded portions located at axial ends of the rod portion;

[0007] Two anchor bodies, each comprising a threaded sleeve and at least two anchor bars, wherein the inner walls of the two threaded sleeves have internal threads and are respectively threadedly connected to the threaded portions of the tie bars, and the at least two anchor bars are arranged on the outer periphery of the threaded sleeves and are arranged tangentially to the outer periphery of the threaded sleeves, and the anchor body is used to be embedded in the precast concrete slab;

[0008] An anchor block is screwed onto a portion of the threaded portion of the reinforcement close to the rod portion, and the reinforcement and the anchor block are connected to form a shear reinforcement.

[0009] In some modified implementations of the first aspect of the present application, the threaded sleeve and the anchor block are an integral structure and are at least partially embedded in the precast concrete slab.

[0010] In some modified embodiments of the first aspect of the present application, the at least two anchor bars are evenly distributed on the outer circumference of the threaded sleeve.

[0011] In some modified implementations of the first aspect of the present application, the number of the anchor bars is four.

[0012] In some modified embodiments of the first aspect of the present application, two of the anchor bars extend in a transverse direction, and the other two anchor bars extend in a vertical direction.

[0013] In some modified implementations of the first aspect of the present application, the diameter of the reinforcement is d1, and the value range of d1 is: 12mm≤d1≤16mm.

[0014] In some modified implementations of the first aspect of the present application, the diameter of the anchor bar is d2, and the value range of d2 is: 8mm≤d2≤10mm.

[0015] In some modified implementations of the first aspect of the present application, the length of the anchor bar is l, and the value range of l is: 50mm≤l≤75mm.

[0016] A second aspect of the present application provides a nuclear engineering composite wall, the nuclear engineering composite wall comprising: a first precast concrete slab and a second precast concrete slab, the two precast concrete slabs being parallel to each other and spaced apart to form a cast-in-place space;

[0017] A plurality of anchor structures are provided in the cast-in-place space, wherein two anchor bodies of each anchor structure are respectively embedded in the first precast concrete slab and the second precast concrete slab;

[0018] A steel frame is arranged in the cast-in-place space, and the steel frame comprises: at least two steel meshes that are parallel to each other and spaced apart, and the at least two steel meshes are connected into one by a plurality of the tie structures.

[0019] In some modified implementations of the second aspect of the present application, the steel mesh is formed by connecting a plurality of transverse steel bars and a plurality of longitudinal steel bars by tying.

[0020] Compared with the prior art, the tie structure and nuclear engineering composite wall provided by the present application include a tie bar and a tie body connected to both ends of the tie bar, and the threaded portions at both ends of the rod of the tie bar are used to connect the tie body and the anchor block; the tie body is used to be pre-buried in the first precast concrete slab and the second precast concrete slab so that the on-site concrete pouring load can be reliably transferred to the tie rod; the threaded sleeve of the tie body is tightly screwed with the threaded portion of the tie bar, and at least two anchor bars are arranged on the outer periphery of the threaded sleeve. The presence of the anchor bars effectively increases the contact area and friction between the tie body and the concrete, and can ensure the stability of the threaded sleeve inside the precast concrete slab. When the precast concrete slab is subjected to external force, the anchor bars can be tightly and firmly anchored in the concrete to prevent the tie body from slipping or being pulled out of the precast concrete slab, thereby significantly improving the anchoring capacity between the tie body and the precast concrete slab, and ensuring the stability and safety of the entire structure. Moreover, the tie bars can be connected with the anchor blocks to form shear reinforcements, so that the tie structure can also serve as the shear reinforcement of the wall. During the prefabrication process, the interlacing and conflict between the tie structure and the shear reinforcement can be avoided, reducing the difficulty of prefabrication and installation. A sufficient number of tie structures can also be added to prevent the prefabricated components of the composite wall from cracking and falling off due to insufficient number of tie structures during transportation, lifting and on-site concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0022] Figure 1 The following schematically shows a structural diagram of a tie structure provided by an embodiment of the present utility model;

[0023] Figure 2 The following schematically shows the structure of a fastening member body of a fastening structure provided by an embodiment of the present invention;

[0024] Figure 3 The following schematically shows a structural diagram of another tie structure provided by an embodiment of the present utility model;

[0025] Figure 4 A schematic diagram of an assembly structure of a tie structure provided by an embodiment of the present utility model is shown schematically;

[0026] Figure 5 Another assembly structure diagram of the tie structure provided by the embodiment of the present utility model is schematically shown;

[0027] Description of Figure Numbers:

[0028] 11. Tie bar; 111. Threaded portion; 12. Anchor body; 121. Threaded sleeve; 122. Anchor bar;

[0029] 2. Anchor block;

[0030] 3. Precast concrete slabs;

[0031] 41. Horizontal reinforcement; 42. Longitudinal reinforcement. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this application belongs.

[0034] Example 1

[0035] Reference Attachment Figure 1 -Attached Figure 5 , Embodiment 1 of the present invention proposes a tie structure, which includes: a tie bar 11, including a rod and a threaded portion 111 respectively located at the axial ends of the rod; and two tie body bodies 12, the tie body body 12 including: a threaded sleeve 121 and at least two anchor bars 122, the inner walls of the two threaded sleeves 121 have internal threads and are respectively screwed to the threaded portions 111 of the tie bar 11, the at least two anchor bars 122 are arranged on the outer periphery of the threaded sleeve 121 and are tangent to the outer peripheral surface of the threaded sleeve 121, the tie body 12 is used to be embedded in the precast concrete slab 3; the threaded portion 111 of the tie bar 11 is screwed with an anchor block 2 near the rod, and the tie bar 11 and the anchor block 2 are connected to form a shear tie bar.

[0036] Specifically, the tie structure provided in this embodiment is applied to the anchoring of the composite wall of a nuclear project. The composite wall of the nuclear project includes two precast concrete panels 3 and a steel frame therebetween. The two precast concrete panels 3 can be respectively the first precast concrete panel and the second precast concrete panel; the structure of the tie structure specifically includes a tie bar 11 and a tie body 12 connected to both ends of the tie bar 11. The tie bar 11 includes a straight-extending rod portion and a threaded portion 111 processed on the outer peripheral surface of the axial ends of the rod portion, which is used to connect the tie body 12 and the anchor block 2; the two ends of the tie bar 11 are respectively connected to the tie body 12, and the tie body 12 is used to be pre-buried in the first precast concrete panel and the second precast concrete panel. The tie bar 11 is perpendicular to the first precast concrete panel and the second precast concrete panel, so that the on-site concrete pouring load can be reliably transferred to the tie bar 11; the structure of the tie body 12 specifically includes: a threaded sleeve 121 and at least two anchor bars 122, the threaded sleeve 121 is a threaded sleeve 121 having an inner wall processed with a threaded portion that is connected to the tie bar 1 The threaded portion 111 of 1 is adapted to the internal threaded sleeve structure, and its cross-sectional shape can be circular, or the threaded sleeve 121 can also be a nut. The setting of the internal thread enables the threaded sleeve 121 to be tightly screwed with the threaded portion 111 of the reinforcement 11, and at least two anchor bars 122 are fixedly provided on the outer periphery of the threaded sleeve 121. The setting direction of the anchor bars 122 is perpendicular to the outer peripheral surface of the threaded sleeve 121. By arranging at least two anchor bars 122 on the outer periphery of the threaded sleeve 121, the presence of the anchor bars 122 effectively increases the contact area and friction between the anchor body 12 and the concrete, which can ensure the stability of the threaded sleeve 121 inside the precast concrete slab 3. When the precast concrete slab 3 is subjected to external force, the anchor bars 122 can be tightly and firmly anchored in the concrete, preventing the anchor body 12 from slipping or being pulled out of the precast concrete slab 3, thereby significantly improving the anchoring ability between the anchor body 12 and the precast concrete slab 3, and ensuring the stability and safety of the entire structure.

[0037] The threaded portion 111 of the tie bar 11 is screwed to the anchor block 2 near the rod portion, and the tie bar 11 can be connected to the anchor block 2 to form a shear tie bar, so that the tie structure can also serve as the shear tie bar of the wall. During the prefabrication process, the interlacing and conflict between the tie structure and the shear steel bars can be avoided, thereby reducing the difficulty of prefabrication and installation. At the same time, since interlacing and conflict can be avoided, a sufficient number of tie structures can be added to prevent the prefabricated components of the composite wall from cracking or falling off during transportation, hoisting and on-site concrete pouring due to insufficient number of tie structures.

[0038] Among them, in order to ensure the stability of the tie structure, the anchor bars 122 on the periphery of the threaded sleeve 121 can be evenly distributed, thereby ensuring that the anchoring force of the tie structure in the concrete is evenly transmitted, avoiding local stress concentration, and thus improving the overall stability and durability of the tie structure.

[0039] According to the above, the embodiment of the present invention proposes a tie structure, which includes a tie bar 11 and a tie body 12 connected to both ends of the tie bar 11. The threaded portions 111 at both ends of the rod of the tie bar 11 are used to connect the tie body 12 and the anchor block 2; the tie body 12 is used to be pre-buried in the first precast concrete slab and the second precast concrete slab so that the on-site concrete pouring load can be reliably transferred to the tie rod; the threaded sleeve 121 of the tie body 12 is tightly screwed with the threaded portion 111 of the tie bar 11, and the threaded sleeve 121 is screwed to the outer periphery of the threaded sleeve 121. At least two anchor bars 122 are provided. The presence of anchor bars 122 effectively increases the contact area and friction between the anchor body 12 and the concrete, ensuring the stability of the threaded sleeve 121 within the precast concrete slab 3. When the precast concrete slab 3 is subjected to external forces, the anchor bars 122 can be tightly and firmly anchored in the concrete, preventing the anchor body 12 from slipping or being pulled out of the precast concrete slab 3. This significantly improves the anchoring capacity between the anchor body 12 and the precast concrete slab 3, ensuring the stability and safety of the entire structure. Furthermore, the tie bars 11 can be connected to the anchor blocks 2 to form shear reinforcement, allowing the tie structure to also function as the wall's shear reinforcement. This prevents interlacing and conflict between the tie structure and the shear reinforcement during the prefabrication process, reducing the difficulty of prefabrication and installation. Furthermore, a sufficient number of tie structures can be added to prevent cracking, falling, or other problems with the precast concrete slabs during transportation, hoisting, and on-site concrete pouring due to insufficient tie structures.

[0040] For further information, see the attached Figure 3 -Attached Figure 5 In a specific implementation, the threaded sleeve 121 and the anchor block 2 are an integral structure, and are at least partially embedded in the precast concrete slab 3 .

[0041] Specifically, in order to achieve structural simplification of the tie structure, the technical solution adopted by the present invention can set the tie structure as an integrated structure with the anchor plate, that is, using an extended anchor block 2, and using the anchor block 2 to replace the threaded sleeve 121, so that the overall structure can be simplified and the convenience of prefabrication and installation can be achieved; in this design, the specific length of the anchor block 2 can be selected or adjusted according to application requirements, and the anchor block 2 can be only partially embedded in the precast concrete plate 3, or the anchor block 2 can also be completely embedded in the precast concrete plate 3.

[0042] For further information, see the attached Figure 1 and attached Figure 2 In a specific implementation, the at least two anchor bars 122 are evenly distributed on the periphery of the threaded sleeve 121 .

[0043] Specifically, in order to enhance the stability of the tie structure, in the technical solution adopted by the present invention, two or more anchor bars 122 on the periphery of the threaded sleeve 121 can be evenly arranged in the same plane, thereby ensuring that the anchoring force of the tie structure in the concrete is evenly transmitted, avoiding local stress concentration, and thus improving the overall stability and durability of the tie structure; in order to further improve the uniformity of force, the number of anchor bars 122 can be set to an even number. This distribution method enables the tie structure to form a stable force system inside the precast concrete slab 3, thereby enhancing the bearing capacity and safety of the overall structure.

[0044] For example: Refer to the attached Figure 2 The number of anchor bars 122 can be four, and a 90-degree angle is formed between two adjacent anchor bars 122. Optimally, two anchor bars 122 extend horizontally along the transverse direction of the precast concrete slab 3, and the other two anchor bars 122 extend vertically along the vertical direction of the precast concrete slab 3. This can effectively resist forces from different directions, including tension, shear force, and bending moment. In addition, the horizontally and vertically distributed anchor bars 122 can also improve the seismic resistance of the precast concrete slab 3, and evenly disperse the forces in all directions exerted on the precast concrete slab 3 during natural disasters such as earthquakes into the precast concrete slab 3, reducing the possibility of stress concentration and damage. Moreover, this uniform and directional distribution method enables construction personnel to more easily determine or check the position and angle of the anchor bars 122, facilitating quality control and quality inspection during the construction process.

[0045] For further information, see the attached Figure 1 In a specific implementation, the diameter of the tie rod 11 is d1, and the value range of d1 is: 12mm≤d1≤16mm, which can ensure that the tie rod 11 has sufficient tie effect and avoid problems such as mold expansion, cracking and deformation of the concrete panel. The specific value of d1 can be determined comprehensively based on the number and spacing of the tie structure, the design requirements of the nuclear engineering composite wall, and the load.

[0046] For further information, see the attached Figure 2 In a specific implementation, the diameter of anchor bar 122 is d2, with a value range of d2 being 8 mm ≤ d2 ≤ 10 mm; and / or the length of anchor bar 122 is l, with a value range of l being 50 mm ≤ l ≤ 75 mm. This design ensures that anchor bar 122 provides a stable and sufficient anchoring effect. Of course, the specific values of d2 and l can be determined based on actual conditions.

[0047] Example 2

[0048] Embodiment 1 of the present invention proposes a composite wall for nuclear engineering, which includes: a first precast concrete slab and a second precast concrete slab, which are parallel to each other and spaced apart to form a cast-in-place space; a plurality of the above-mentioned tie structures, which are arranged in the cast-in-place space, and the two tie member bodies 12 of each of the tie structures are respectively pre-embedded in the first precast concrete slab and the second precast concrete slab; a steel skeleton, which is arranged in the cast-in-place space, and the steel skeleton includes: two steel meshes which are parallel to each other and spaced apart, and the two steel meshes are connected into one by a plurality of the tie structures.

[0049] Specifically, the first precast concrete slab and the second precast concrete slab are precast concrete wall slabs, and a wire mesh structure may be provided inside. The first concrete slab and the second concrete slab are parallel to each other and spaced apart to form a cast-in-place space between them for on-site concrete pouring. The steel skeleton serves as the core supporting structure between the first precast concrete slab and the second precast concrete slab of the nuclear engineering composite wall, which can improve the bearing capacity of the composite wall, effectively absorb and disperse the stress generated by the composite wall during the load-bearing process, thereby preventing cracking and deformation of the composite wall, and improving the seismic resistance. The steel skeleton may specifically include at least two steel meshes arranged in parallel and spaced apart from each other. Each steel mesh may be formed by tying together a plurality of transverse steel bars 41 and a plurality of longitudinal steel bars 42. The steel mesh is connected by a plurality of tie bars 11 and anchor blocks 2 of the above-mentioned tie structure to form an integrated steel skeleton. The two tie member bodies 12 of each tie structure are respectively embedded in the first precast concrete slab and the second precast concrete slab, so that the first concrete slab and the second concrete slab can be connected into an integrated precast component to form the nuclear engineering composite wall. During the on-site concrete pouring process, the tie structure can play a sufficient tie role to withstand the construction load of the on-site concrete pouring and prevent the first precast concrete slab and the second precast concrete slab from being deformed or cracked.

[0050] The construction steps of the composite wall of the nuclear engineering provided by this embodiment can be specifically as follows: first, all the steel meshes are connected by a plurality of tie structures to form a steel skeleton; the steel meshes are fixed on both sides of the thickness direction of the steel skeleton, and the steel meshes on both sides are cast together with the tie body 12 of the corresponding plurality of tie structures to form a first precast concrete slab and a second precast concrete slab, so as to form the precast components of the composite wall of the nuclear engineering; the precast components are hoisted to the designated location of the construction site, a small amount of temporary supports are set up, and a plurality of precast components are connected by steel sleeves; finally, concrete is poured into the cast-in-place space of the precast components and cured, and the temporary supports are removed.

[0051] It should be noted that, in the description of this specification, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention; the terms "connect", "install", "fix", etc. should all be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0052] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A tie structure, characterized in that: include: The tie rod comprises a rod portion and threaded portions respectively located at two axial ends of the rod portion; Two anchor bodies, each comprising a threaded sleeve and at least two anchor bars, wherein the inner walls of the two threaded sleeves have internal threads and are respectively threadedly connected to the threaded portions of the tie bars, and the at least two anchor bars are arranged on the outer periphery of the threaded sleeves and are arranged tangentially to the outer periphery of the threaded sleeves, and the anchor body is used to be embedded in the precast concrete slab; An anchor block is screwed onto a portion of the threaded portion of the reinforcement close to the rod portion, and the reinforcement and the anchor block are connected to form a shear reinforcement.

2. The tie structure according to claim 1, characterized in that: The threaded sleeve and the anchor block are an integral structure and are at least partially embedded in the precast concrete slab.

3. The tie structure according to claim 1, characterized in that: The at least two anchor bars are evenly distributed on the outer circumference of the threaded sleeve.

4. The tie structure according to claim 3, characterized in that: The number of the anchor bars is four.

5. The tie structure according to claim 4, characterized in that: Two of the anchor bars extend in the transverse direction, and the other two extend in the vertical direction.

6. The tie structure according to claim 1, characterized in that: The diameter of the reinforcement is d1, and the value range of d1 is: 12mm≤d1≤16mm.

7. The tie structure according to claim 1, characterized in that: The diameter of the anchor bar is d2, and the value range of d2 is: 8mm≤d2≤10mm.

8. The anchor structure according to claim 1 or 7, characterized in that: The length of the anchor bar is l, and the value range of l is: 50mm≤l≤75mm.

9. A nuclear engineering composite wall, characterized in that: include: A first precast concrete slab and a second precast concrete slab are parallel to each other and spaced apart to form a cast-in-place space; The anchor structure according to any one of claims 1 to 8 is arranged in the cast-in-place space, and the two anchor bodies of each anchor structure are respectively pre-embedded in the first precast concrete slab and the second precast concrete slab; A steel frame is arranged in the cast-in-place space, and the steel frame comprises: at least two steel meshes that are parallel to each other and spaced apart, and the at least two steel meshes are connected into one by a plurality of the tie structures.

10. The nuclear engineering composite wall according to claim 9, characterized in that: The steel mesh is formed by connecting a plurality of transverse steel bars and a plurality of longitudinal steel bars by tying.

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