A double-skin composite wall module and double-skin composite wall
Patent Information
- Application Number
- CN202522000236.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-17
AI Technical Summary
[0006]鉴于现有技术的上述缺点、不足，本实用新型提供一种双皮叠合墙模块及双皮叠合墙，其解决了现有的双皮叠合墙墙壳抗裂性能差，在堆放、装运以及吊装过程中墙面经常发生龟裂甚至断裂渗水现象，以及叠合墙墙壳之间连接不方便，现场施工复杂的技术问题
[0023]本实用新型的一种双皮叠合墙模块及双皮叠合墙，一方面通过采用碳纤维增强混凝土板替代传统的普通混凝土板作为双皮叠合墙的墙壳，能够有效解决现有普通混凝土叠合墙墙壳在堆放、装运以及吊装过程中易开裂、易腐蚀、易渗水的问题，特别是对裂缝问题较突出的高强度混凝土，采用碳纤维增强混凝土板制作的墙壳连接成的双皮叠合墙模块(尤其是条件限制，需要制作为薄壁壳体)，由于其具备普通混凝土预制叠合墙墙壳所缺乏的高抗裂、高耐腐、防渗透等优异性能，也可以有效防止后浇混凝土侧压作用下造成的开裂。另外，碳纤维能够替代墙体中的加固钢筋，既显著减轻了建筑构件的重量，也避免了钢筋的碰撞。其通过预埋在墙壳中的大箍筋与闭合小箍配合形成的连接组件连接两侧的墙壳，连接结构简单，操作方便，能够有效提高现场的安装施工效率，缩短建筑工期，同时大箍筋与闭合小箍之间通过穿设钢筋传递拉应力，以形成对拉结构，并在竖直方向上设置多层大箍筋与闭合小箍，使得连接组件整体形成抗剪件，使得双皮叠合墙模块的整体组合受力能力更加优异。另一方面通过在双皮叠合墙模块内浇筑混凝土，形成包裹连接组件的混凝土层，以整体形成双皮叠合墙，其相较传统的叠合墙性能更加优异。
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Figure CN224799770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, and in particular to a double-skin composite wall module and a double-skin composite wall. Background Technology
[0002] In recent years, the national requirements for the assembly rate of prefabricated buildings have been continuously increasing. In particular, for projects with a prefabrication rate of over 30%, prefabricated shear walls have become one of the necessary options for prefabricated buildings. Composite shear walls are extremely important for the development of prefabricated buildings. As a "semi-prefabricated and semi-cast-in-place" structural system, the prefabricated wall panels on both sides of the composite shear wall can act as formwork during the structural construction process, greatly reducing the workload of on-site formwork erection and dismantling.
[0003] However, current ordinary precast concrete composite walls have poor crack resistance. During stacking, transportation, and hoisting, the wall surface frequently cracks or even breaks and leaks. The main reasons are: some composite walls have excessively large spans, causing excessive deflection at the mid-span during hoisting, resulting in cracks; and because the precast thickness is relatively thin, the cracks quickly extend to the entire wall, leading to component failure. During stacking and transportation, excessive layers of the composite wall shell cause excessive compression between them. During pouring and vibration, incomplete vibration by the vibrating table results in insufficient concrete coverage at the truss reinforcement locations, making them prone to cracking along the truss reinforcement during hoisting. During demolding, uneven application of release agent, insufficient application, and forced demolding before the concrete has reached its demolding strength at low temperatures cause warping and cracking of the composite wall shell. Meanwhile, when composite wall shells are used as formwork (especially thinner shells), they may experience bulging and cracking when subjected to the lateral pressure of the poured concrete. Furthermore, there are problems such as inconvenient connection between composite wall shells and difficulties in on-site reinforcement binding.
[0004] Therefore, there is an urgent need for a double-skin composite wall module that has excellent combined stress conditions, is easy to construct, and has excellent properties such as high crack resistance, high corrosion resistance, and impermeability. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the above-mentioned shortcomings and deficiencies of the existing technology, this utility model provides a double-skin composite wall module and a double-skin composite wall, which solves the technical problems of poor crack resistance of the existing double-skin composite wall shell, frequent cracking or even breakage and water seepage on the wall surface during stacking, transportation and hoisting, as well as inconvenient connection between the composite wall shells and complicated on-site construction.
[0007] Technical issues.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:
[0010] On one hand, this utility model provides a double-skin composite wall module, including two oppositely arranged carbon fiber reinforced concrete (CFRP) slabs and a connecting assembly disposed between the two CFRP slabs. The connecting assembly includes multiple layers of parallel hoop assemblies spaced vertically, each hoop assembly including at least two large hoop bars and one closed small hoop. The two large hoop bars are arranged horizontally on the same horizontal plane, with their opposite ends embedded in the opposite sidewalls of the two CFRP slabs, and their opposite ends spaced apart and connected by the closed small hoop. A concrete pouring space is formed between the two CFRP slabs, and the connecting assembly is located within the concrete pouring space.
[0011] Optionally, both the large stirrups and the closed small stirrups are ring structures. The closed small stirrups are horizontally stacked between the two large stirrups, and connecting steel bars are vertically threaded through the intersection areas of the closed small stirrups and the large stirrups on both sides. Each connecting steel bar simultaneously penetrates the multi-layer stirrup assembly, and its length is greater than or equal to the distance between the top stirrup assembly and the bottom stirrup assembly.
[0012] Optionally, the connection position between the large stirrup and the closed small stirrup is such that the horizontal dimension of the large stirrup parallel to the surface of the carbon fiber reinforced concrete slab is greater than the horizontal dimension of the closed small stirrup parallel to the surface of the carbon fiber reinforced concrete slab, and the closed small stirrup is stacked in the middle of the large stirrup.
[0013] Two first reinforcing bars are symmetrically inserted vertically inside the large stirrup. The two first reinforcing bars are located on both sides of the area where the closed small stirrup and the large stirrup intersect and abut against the inner side wall of the side where the large stirrup and the closed small stirrup are connected. The first reinforcing bars pass through the multi-layer sleeve assembly, and their length is greater than or equal to the distance between the top sleeve assembly and the bottom sleeve assembly.
[0014] Optionally, a second reinforcing bar is vertically inserted inside the large stirrup, and the second reinforcing bar and the large stirrup are embedded together in the carbon fiber reinforced concrete slab. The second reinforcing bar abuts against the inner wall of the large stirrup near the carbon fiber reinforced concrete slab and penetrates through the multi-layered hoop assembly, with its length being greater than or equal to the distance between the top hoop assembly and the bottom hoop assembly.
[0015] Optionally, the spacing between two adjacent layers of large stirrups is the same as the spacing between two adjacent layers of closed small stirrups, both between 100mm and 200mm.
[0016] Optionally, vertical irons extending in the vertical direction are provided on both sides of the non-intersecting area of the closed small hoop and the large hoop, and each vertical iron is simultaneously fixed to the multi-layer closed small hoop.
[0017] Optionally, the thickness of the carbon fiber reinforced concrete panel is between 70mm and 90mm.
[0018] Optionally, the embedment depth of the large stirrups in the carbon fiber reinforced concrete slab is greater than or equal to 1 / 2 the thickness of the carbon fiber reinforced concrete slab.
[0019] Optionally, multiple sets of connecting components are spaced horizontally between two carbon fiber reinforced concrete panels. The distance between two adjacent sets of connecting components is greater than the horizontal dimension of the closed hoop parallel to the surface of the carbon fiber reinforced concrete panel.
[0020] On the other hand, this utility model provides a double-skin composite wall, including any of the above-mentioned double-skin composite wall modules and a concrete layer. The concrete layer is disposed between two carbon fiber reinforced concrete slabs and is formed by pouring concrete into the concrete pouring space and curing it. The concrete layer also wraps around the connecting components and fills the concrete pouring space.
[0021] (III) Beneficial Effects
[0022] The beneficial effects of this utility model are:
[0023] This utility model discloses a double-skin composite wall module and a double-skin composite wall. Firstly, by using carbon fiber reinforced concrete panels instead of traditional ordinary concrete panels as the wall shell of the double-skin composite wall, it effectively solves the problems of easy cracking, corrosion, and water seepage in existing ordinary concrete composite wall shells during stacking, transportation, and hoisting. Especially for high-strength concrete where cracking is a prominent issue, the double-skin composite wall module made of carbon fiber reinforced concrete panels (particularly when conditions require a thin-walled shell) possesses superior properties lacking in ordinary precast concrete composite wall shells, such as high crack resistance, high corrosion resistance, and impermeability. It can also effectively prevent cracking caused by the lateral pressure of the poured concrete. Secondly, carbon fiber can replace the reinforcing steel bars in the wall, significantly reducing the weight of the building components and avoiding collisions with the reinforcing steel bars. The system connects the two sides of the wall shell using a connecting assembly formed by large stirrups and closed small stirrups pre-embedded in the wall shell. This simple connection structure and easy operation effectively improve on-site installation efficiency and shorten the construction period. Simultaneously, the large stirrups and closed small stirrups transfer tensile stress through through-steel bars to form a tension structure. Multiple layers of large stirrups and closed small stirrups are installed vertically, making the connecting assembly a shear-resistant component, resulting in superior overall load-bearing capacity of the double-skin composite wall module. Furthermore, by pouring concrete inside the double-skin composite wall module, a concrete layer is formed encasing the connecting assembly, creating a double-skin composite wall with superior performance compared to traditional composite walls. Attached Figure Description
[0024] Figure 1 This is a top view schematic diagram of Embodiment 1 of a double-skin composite wall module of the present invention;
[0025] Figure 2 for Figure 1 A cross-sectional view at point AA;
[0026] Figure 3 for Figure 1 A cross-sectional view at point BB;
[0027] Figure 4 This is a schematic diagram of the connection components of Embodiment 2 of the double-skin composite wall module of this utility model.
[0028] [Explanation of Labels in the Attached Image]
[0029] 01: Carbon fiber; 11: Carbon fiber reinforced concrete panel;
[0030] 02: Concrete substrate; 21: Large stirrup; 22: Second reinforcing bar;
[0031] 03: Concrete pouring space; 31: Closed hoop; 32: Connecting reinforcement; 33: First reinforcement; 34: Vertical reinforcement;
[0032] a. The horizontal dimension of the large stirrup parallel to the surface of the carbon fiber reinforced concrete slab.
[0033] b is the horizontal dimension of the closed hoop parallel to the surface of the carbon fiber reinforced concrete slab. Detailed Implementation
[0034] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.
[0035] This utility model proposes a double-skin composite wall module and a double-skin composite wall. By using carbon fiber reinforced concrete panels instead of traditional ordinary concrete panels as the wall shell of the double-skin composite wall, it effectively solves the problems of easy cracking, corrosion, and water seepage in existing ordinary concrete composite wall shells during stacking, transportation, and hoisting. Especially for high-strength concrete where cracking is more prominent, the double-skin composite wall module made of carbon fiber reinforced concrete panels (especially when conditions require it to be made into a thin-walled shell) possesses superior properties such as high crack resistance, high corrosion resistance, and impermeability that are lacking in ordinary precast concrete composite wall shells. It can also effectively prevent cracking caused by the lateral pressure of the poured concrete. In addition, carbon fiber can replace the reinforcing steel bars in the wall, which significantly reduces the weight of the building components and avoids collisions with the steel bars. The system connects the two sides of the wall shell using a connecting assembly formed by large stirrups and closed small stirrups pre-embedded in the wall shell. This simple connection structure and easy operation effectively improve on-site installation efficiency and shorten the construction period. Simultaneously, the large stirrups and closed small stirrups transfer tensile stress through through-steel bars to form a tension structure. Multiple layers of large stirrups and closed small stirrups are installed vertically, making the connecting assembly a shear-resistant component, resulting in superior overall load-bearing capacity of the double-skin composite wall module. Furthermore, by pouring concrete inside the double-skin composite wall module, a concrete layer is formed encasing the connecting assembly, creating a double-skin composite wall with superior performance compared to traditional composite walls.
[0036] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.
[0037] Example 1:
[0038] Reference Figures 1 to 3This embodiment proposes a double-skin composite wall module, comprising two oppositely arranged carbon fiber reinforced concrete (CFRP) slabs 11 and a connecting component disposed between the two CFRP slabs 11. The two CFRP slabs 11 are connected by the connecting component to form a tension structure, and a concrete pouring space 03 is formed between the two CFRP slabs 11. The connecting component is located within the concrete pouring space 03. During on-site construction, after the double-skin composite wall module is assembled, concrete is poured into the concrete pouring space 03, so that the CFRP slabs 11 and the cast-in-place concrete are connected as a whole, thus forming a complete double-skin composite wall. The thickness of the carbon fiber reinforced concrete board 11 is preferably set between 70mm and 90mm. The carbon fiber reinforced concrete board 11 is a chopped carbon fiber reinforced concrete board, which is an existing composite material that integrates traditional building materials and modern high-tech materials. Since carbon fiber 01 itself has excellent properties such as corrosion resistance, high strength, lightweight, crack resistance and toughening, the chopped carbon fiber reinforced concrete board made by uniformly dispersing it in the concrete matrix 02 has better material properties than traditional concrete boards. For example: 1) It has excellent crack resistance and excellent combined stress condition: Several carbon fibers 01 form a three-dimensional random distribution network in the concrete matrix 02 and can form a "pinning effect" at the tip of microcracks, which can effectively inhibit the generation and propagation of microcracks. After cracks appear, carbon fibers 01 can transmit tensile stress across cracks, improve fracture toughness, thereby preventing the generation and development of macrocracks, and improving its tensile strength and shear, bending and torsional strength controlled by principal tensile stress. 2) Enhanced impermeability: Because carbon fiber 01 fills the capillary pores, cracks are effectively suppressed, increasing the density of the concrete and greatly enhancing its resistance to water and chloride ion penetration. This effectively reduces the permeability of the concrete and improves its durability. Furthermore, carbon fiber 01 has a much lower density than steel reinforcement and does not corrode. Therefore, to achieve the same reinforcement effect, the overall weight of the component can be lighter, making it more suitable for corrosive environments such as damp and saline-alkali conditions.
[0039] Therefore, this embodiment, by using carbon fiber reinforced concrete panels 11 instead of traditional ordinary concrete panels as the shell of the double-skin composite wall, can effectively solve the problems of easy cracking, corrosion, and water seepage of existing ordinary concrete composite wall shells during stacking, transportation, and hoisting. Especially for high-strength concrete where cracking is a prominent issue, the double-skin composite wall modules made of carbon fiber reinforced concrete panels 11 (especially when conditions require thin-walled shells) possess superior properties such as high crack resistance, high corrosion resistance, and impermeability, which are lacking in ordinary precast concrete composite wall shells. This also effectively prevents cracking caused by the lateral pressure of the poured concrete. Furthermore, carbon fiber 01 can replace the reinforcing steel bars in the wall, significantly reducing the weight of the building components and avoiding collisions with the reinforcing steel bars.
[0040] Specifically, the connecting assembly includes multiple layers of parallel hoop assemblies spaced at intervals along the vertical direction. Each hoop assembly includes at least two large hoops 21 and one closed small hoop 31. The spacing between two adjacent layers of large hoops 21 is the same as the spacing between two adjacent layers of closed small hoops 31, preferably between 100mm and 200mm. Both the large hoops 21 and the closed small hoops 31 are annular structures. The large hoops 21 are preferably rectangular annular structures with rounded corners, and the closed small hoops 31 are preferably annular structures with elongated circular holes.
[0041] Two large stirrups 21 are arranged horizontally on the same horizontal plane, with their far ends embedded in the opposite sidewalls of the two carbon fiber reinforced concrete slabs 11. During embedding, the long side of the large stirrup 21 is parallel to the surface of the carbon fiber reinforced concrete slab 11, and the embedment depth of the large stirrup 21 in the carbon fiber reinforced concrete slab 11 is greater than or equal to 1 / 2 the thickness of the carbon fiber reinforced concrete slab 11. A second steel bar 22 is inserted vertically inside the large stirrup 21, and the second steel bar 22 is embedded together with the large stirrup 21 in the carbon fiber reinforced concrete slab 11. The second reinforcing bar 22 abuts against the inner wall of the large stirrup 21 near the carbon fiber reinforced concrete slab 11, preferably at the two rounded corners of the large stirrup 21 located within the carbon fiber reinforced concrete slab 11, and penetrates vertically through the multi-layer hoop assembly. Its length is greater than or equal to the distance between the top and bottom hoop assemblies, meaning the second reinforcing bar 22 penetrates all layers of the large stirrup 21 from top to bottom. The second reinforcing bar 22 and the multi-layer large stirrups 21 are all fixed together with wire. The second reinforcing bar 22 can position and limit the large stirrup 21 during the prefabrication and embedding stage, and after overall binding, it forms a frame structure, which is convenient for casting. It can also improve the tensile strength of the overall structure and facilitate the force transmission between the two carbon fiber reinforced concrete slabs and the connecting assembly.
[0042] Furthermore, the two large stirrups 21 are spaced apart at opposite ends and connected by a closed small stirrup 31. The closed small stirrup 31 is horizontally stacked between the two large stirrups 21, and its semi-circular parts on both sides extend into the range of the large stirrups 21 on both sides, forming an intersection area with the large stirrups 21. In the intersection area of the closed small stirrup 31 and the large stirrups 21 on both sides, a connecting steel bar 32 is inserted vertically. Each connecting steel bar 32 passes through the multi-layer sleeve assembly at the same time, and its length is greater than or equal to the distance between the top sleeve assembly and the bottom sleeve assembly. That is, the multi-layer closed small stirrups 31 and the large stirrups 21 on both sides are connected at the same position by the same connecting steel bar 32, and the interaction force is transmitted through the connecting steel bar 32.
[0043] In this embodiment, to improve the overall stability and force transmission performance of the connecting components, the connection position of the large stirrup 21 and the closed small stirrup 31, the dimension a of the large stirrup 21 in the horizontal direction parallel to the surface of the carbon fiber reinforced concrete slab 11 is greater than the dimension b of the closed small stirrup 31 in the horizontal direction parallel to the surface of the carbon fiber reinforced concrete slab 11, and the closed small stirrup 31 is stacked in the middle of the large stirrup 21, and there is still a margin on both sides of the closed small stirrup 31 stacked in the large stirrup 21 to allow for the insertion of reinforcing bars. Furthermore, two first reinforcing bars 33 are symmetrically inserted vertically within the large stirrup 21. These two first reinforcing bars 33 are located on either side of the intersection area between the closed small stirrup 31 and the large stirrup 21, and abut against the inner wall of the side where the large stirrup 21 connects to the closed small stirrup 31. Preferably, they abut against the two rounded corners of the large stirrup 21 outside the carbon fiber reinforced concrete slab 11. Both first reinforcing bars 33 penetrate the multi-layered hoop assembly, and their lengths are greater than or equal to the distance between the top and bottom hoop assemblies. That is, like the second reinforcing bar 22, the first reinforcing bars 33 penetrate all layers of the large stirrup 21 from top to bottom. The first reinforcing bars 33 can position and limit the large stirrup 21 and the closed small stirrup 31 during the cast-in-place stage, and the overall structure can form a frame structure, facilitating casting. It also improves the tensile strength of the overall structure and is beneficial for the force transmission between the two carbon fiber reinforced concrete slabs 11 and the connecting assembly.
[0044] A multi-layered, parallel hoop assembly is vertically arranged and connected by connecting steel bars 32, the first steel bar 33, and the second steel bar 22 to form an integral frame structure. This makes the connecting assembly a shear-resistant component, possessing both tensile and shear resistance properties while effectively ensuring force transmission between components, thus further guaranteeing the overall load-bearing capacity of the double-skin composite wall module. Simultaneously, this connection structure is simpler and easier to install, effectively improving on-site installation efficiency and shortening the construction period.
[0045] Preferably, the cross-section of the annular structure formed by the large stirrup 21 and the closed small stirrup 31 is a circle between 8mm and 12mm, the diameter of the connecting steel bar 32 is between 8mm and 16mm, and the diameter of the first steel bar 33 and the second steel bar 22 is between 10mm and 40mm.
[0046] Furthermore, in order to facilitate the stacking of the closed small hoop 31 onto the corresponding position of the large hoop 21, vertical irons 34 extending in the vertical direction are provided on both sides outside the non-intersecting area of the closed small hoop 31 and the large hoop 21, and each vertical iron 4 is simultaneously fixed to the multi-layer closed small hoop 31.
[0047] Depending on the size of the carbon fiber reinforced concrete slab 11, multiple sets of connecting components can be arranged at intervals in the horizontal direction between two carbon fiber reinforced concrete slabs 11. Since the closed hoop 31 needs to be moved from the side to the state of intersecting with the large hoop 21, the distance between two adjacent sets of connecting components should be greater than the horizontal dimension b of the closed hoop 31 parallel to the surface of the carbon fiber reinforced concrete slab 11, so as to form a space between two adjacent sets of connecting components that can accommodate the closed hoop 31.
[0048] It should be noted that the single-sided carbon fiber reinforced concrete slab 11, the multi-layer large stirrups 21 embedded in the carbon fiber reinforced concrete slab 11, and the first reinforcing bar 33 are prefabricated in the factory. The connection between the multi-layer closed small stirrups 31 and the vertical iron 34 is also prefabricated in the factory. During on-site construction, it is only necessary to place the two sets of carbon fiber reinforced concrete slabs 11 with large stirrups 21 opposite each other, then move the multi-layer closed small stirrups 31 with vertical iron 34 to the corresponding positions, and thread the connecting reinforcing bars 32 and the first reinforcing bars 33 to complete the connection of this double-skin composite wall module. When threading the connecting reinforcing bars 32 and the first reinforcing bars 33 on-site, there is no need for reinforcing bar binding, because the connecting components themselves can limit the connecting reinforcing bars 32 and the first reinforcing bars 33. Slight movement of the two within the threaded position will not affect the overall structure. Among them, the intersection area enclosed by the large stirrups 21 and the closed small stirrups 31 limits the connecting reinforcing bars 32. Furthermore, within the large stirrup 21, the inner wall of the large stirrup 21, the outer wall of the closed small stirrup 31, and the surface of the carbon fiber reinforced concrete slab 11 together limit the first reinforcing bar 33. This connection structure greatly simplifies the on-site operation process, allowing most of the work to be completed in the factory, with only simple installation required on-site, effectively shortening the on-site construction time and improving the efficiency of modular construction.
[0049] The specific construction process is briefly described below:
[0050] Factory prefabrication stage:
[0051] After confirming the layer spacing of the hoop assembly, the multi-layer large hoop 21 is pre-tied with the first steel bar 33 at the set distance, and then concrete mixed with short-cut carbon fiber 01 is poured to form a carbon fiber reinforced concrete slab 11 with embedded large hoop 21 and first steel bar 33. At the same time, the multi-layer closed small hoop 31 is welded to the vertical iron 34 at the set distance.
[0052] On-site construction phase:
[0053] Two sets of carbon fiber reinforced concrete slabs 11, each embedded with a large stirrup 21 and a first reinforcing bar 33, are placed opposite each other at a designated position. Then, a multi-layer closed small stirrup 31 with welded vertical iron 34 is placed in the cavity formed between two adjacent sets of connecting components. The closed small stirrup 31 is then moved to the corresponding position where it intersects with the large stirrup 21, and the connecting reinforcing bar 32 and the first reinforcing bar 33 are threaded through it, thus completing the connection of the entire double-skin composite wall module.
[0054] Example 2:
[0055] Reference Figure 4 The double-skin composite wall module proposed in this embodiment differs from that in Embodiment 1 in that the number of closing hoops 31 in the connecting components is different. The rest of the components are the same as those in Embodiment 1, and will not be described again here.
[0056] Specifically, at the connection point between the large stirrup 21 and the closed small stirrup 31, the horizontal dimension 'a' of the large stirrup 21 parallel to the surface of the carbon fiber reinforced concrete slab 11 is more than twice the horizontal dimension 'b' of the closed small stirrup 31 parallel to the surface of the carbon fiber reinforced concrete slab 11. That is, the side length of the direction in which the large stirrup 21 overlaps the closed small stirrup 31 allows for the simultaneous horizontal overlapping of two closed small stirrups 31, and space is left on both sides of the large stirrup 21 where the two closed small stirrups 31 are overlapped to allow for the insertion of the first reinforcing bar 33. The two closed small stirrups 31 are connected to each other by welding with vertical iron 34 or by direct welding to form a complete structure. It should be noted that in this configuration, the size of the cavity 03 between two adjacent sets of connecting components must be large enough to accommodate the two sets of closed small stirrups 31 after connection.
[0057] The double-skin composite wall module shown in this embodiment has higher connection strength and superior tensile and shear resistance, making it suitable for applications with complex stress conditions or stricter strength requirements. Of course, it is not limited to this; the specific shape, size, and quantity of the large stirrups 21 and the closed small stirrups 31 can be adjusted by those skilled in the art according to actual needs.
[0058] Example 3:
[0059] The double-skin composite wall proposed in this embodiment includes any of the double-skin composite wall modules described in Embodiments 1 and 2 above and a concrete layer. The concrete layer is disposed between two carbon fiber reinforced concrete slabs 11 and is formed by pouring concrete in the concrete pouring space 03 and curing it. The concrete layer wraps the connecting components and fills the concrete pouring space 03.
[0060] In actual construction, after connecting the double-skin composite wall modules on site, concrete is poured directly into the concrete pouring space 03, filling the space between the two carbon fiber reinforced concrete panels 11 with concrete. This connects the carbon fiber reinforced concrete panels 11 with the cast-in-place concrete, forming a complete double-skin composite wall after curing. This double-skin composite wall offers superior performance compared to traditional composite walls, and the overall construction process is simpler and more convenient, significantly reducing on-site construction time and improving modular construction efficiency.
[0061] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions, and variations to the above embodiments within the scope of the present invention.
Claims
1. A double-skin composite wall module, characterized in that: It includes two oppositely arranged carbon fiber reinforced concrete slabs (11) and a connecting assembly disposed between the two carbon fiber reinforced concrete slabs (11); The connecting assembly includes multiple layers of parallel hoop assemblies spaced apart in the vertical direction, each layer of the hoop assembly including at least two large hoop bars (21) and a closed small hoop (31). The two large stirrups (21) are arranged horizontally on the same horizontal plane, and their opposite ends are respectively embedded in the opposite sidewalls of the two carbon fiber reinforced concrete slabs (11). Their opposite ends are spaced apart from each other and connected by the closed small stirrups (31). A concrete pouring space (03) is formed between the two carbon fiber reinforced concrete slabs (11), and the connecting assembly is located within the concrete pouring space (03).
2. The double-skin composite wall module as described in claim 1, characterized in that: Both the large stirrup (21) and the closed small stirrup (31) are ring structures; The closed small hoop (31) is stacked horizontally between the two large hoop bars (21), and connecting steel bars (32) are inserted vertically in the intersection area of the closed small hoop (31) and the large hoop bars (21) on both sides. Each of the connecting steel bars (32) simultaneously penetrates multiple layers of the hoop assembly, and its length is greater than or equal to the distance between the top hoop assembly and the bottom hoop assembly.
3. A double-skin composite wall module as described in claim 2, characterized in that: The connection position between the large stirrup (21) and the closed small stirrup (31) is such that the dimension a of the large stirrup (21) parallel to the surface of the carbon fiber reinforced concrete slab (11) in the horizontal direction is greater than the dimension b of the closed small stirrup (31) parallel to the surface of the carbon fiber reinforced concrete slab (11) in the horizontal direction, and the closed small stirrup (31) is stacked in the middle position of the large stirrup (21). Two first steel bars (33) are symmetrically inserted in the vertical direction inside the large stirrup (21). The two first steel bars (33) are located on both sides of the area where the closed small stirrup (31) and the large stirrup (21) intersect and abut against the inner side wall of the side where the large stirrup (21) and the closed small stirrup (31) are connected. The first steel bars (33) penetrate through the multiple layers of the sleeve assembly, and their length is greater than or equal to the distance between the top sleeve assembly and the bottom sleeve assembly.
4. A double-skin composite wall module as described in claim 1, characterized in that: The large stirrup (21) is provided with a second steel bar (22) running vertically inside it. The second steel bar (22) and the large stirrup (21) are embedded together in the carbon fiber reinforced concrete slab (11). The second reinforcing bar (22) abuts against the inner wall of the large stirrup (21) on the side near the carbon fiber reinforced concrete slab (11) and penetrates through multiple layers of the hoop assembly, with a length greater than or equal to the distance between the top hoop assembly and the bottom hoop assembly.
5. A double-skin composite wall module as described in claim 1, characterized in that: The spacing between the large stirrups (21) in two adjacent layers is the same as the spacing between the closed small stirrups (31) in two adjacent layers, both being between 100mm and 200mm.
6. A double-skin composite wall module as described in claim 1, characterized in that: On both sides of the non-intersecting area of the closed small hoop (31) and the large hoop (21), there are vertical irons (34) extending in the vertical direction, and each of the vertical irons (34) is simultaneously fixed to the multiple layers of the closed small hoop (31).
7. A double-skin composite wall module as described in claim 1, characterized in that: The thickness of the carbon fiber reinforced concrete slab (11) is between 70 mm and 90 mm.
8. A double-skin composite wall module as described in claim 1, characterized in that: The embedment depth of the large stirrup (21) in the carbon fiber reinforced concrete slab (11) is greater than or equal to 1 / 2 the thickness of the carbon fiber reinforced concrete slab (11).
9. A double-skin composite wall module as described in claim 1, characterized in that: Between the two carbon fiber reinforced concrete slabs (11), a plurality of sets of the connecting components are arranged at horizontal intervals; The distance between two adjacent sets of the connecting components is greater than the dimension b in the horizontal direction parallel to the surface of the closed hoop (31) and the carbon fiber reinforced concrete plate (11).
10. A double-skin composite wall, characterized in that: Includes the double-skin composite wall module and concrete layer as described in any one of claims 1-9; The concrete layer is disposed between the two carbon fiber reinforced concrete plates (11) and is formed by pouring concrete in the concrete pouring space (03) and curing it. The concrete layer encloses the connecting component and fills the concrete pouring space (03).