Full assembly of free binding of superimposed shear wall system

Abstract

This application provides a fully prefabricated, tie-free composite shear wall system, belonging to the field of prefabricated buildings, including a lower composite shear wall and an upper composite shear wall. The lower composite shear wall includes a lower prefabricated outer leaf plate, a lower prefabricated inner leaf plate, and a lower composite cavity, which is formed between the lower prefabricated outer leaf plate and the lower prefabricated inner leaf plate. The upper composite shear wall includes an upper prefabricated outer leaf plate, an upper prefabricated inner leaf plate, and an upper composite cavity, which is formed between the upper prefabricated outer leaf plate and the upper prefabricated inner leaf plate. At least the lower prefabricated outer leaf plate and / or the lower prefabricated inner leaf plate have protruding structural reinforcement bars, which extend into the upper composite cavity, and the extended portions form an effective lap joint with the structural reinforcement bars in the upper prefabricated outer leaf plate and / or the upper prefabricated inner leaf plate.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated buildings, and in particular relates to a fully assembled, tie-free composite shear wall system. Background Technology

[0002] Existing composite walls in the field of prefabricated buildings generally include inner leaf panels, outer leaf panels, and an intermediate composite layer; the inner leaf panels and outer leaf panels are connected by tie bars and are prefabricated in the factory, then transported to the site for installation and pouring.

[0003] In existing technologies, the construction of two-layer composite walls involves first installing the lower composite wall and then laying a precast floor slab on the inner and outer leaf plates of the lower composite wall; manually installing connecting bars that overlap with the upper composite wall; then casting the composite layer of the floor slab and the composite layer of the composite wall as a whole; and finally installing the upper composite wall and overlapping it with connecting bars.

[0004] One problem is that the connection bars require manual positioning and binding during installation, which can lead to misalignment between the connection bars and the structural reinforcement in the composite wall, posing a significant safety hazard. This hazard exists in both L-shaped composite walls (corner walls) and T-shaped composite walls (winged walls).

[0005] For example, the Shanghai local standard atlas "Technical Specification for Prefabricated Composite Shear Wall Structures" (DGTJ08-2266-2018) and the Jiangsu local standard atlas "Technical Specification for Prefabricated Composite Shear Wall Structures" (DB32T 4497-2023) both use dowel bars for connection in L-shaped composite walls (corner walls) and T-shaped composite walls (winged walls). At the corner concealed columns, there is a large amount of rebar binding and additional rebar binding, as well as formwork support. The connection between the upper and lower prefabricated composite walls involves a large number of additional dowel bars, often misaligned, resulting in low construction efficiency, high costs, difficulties in connecting prefabrication and cast-in-place processes, and certain safety hazards, greatly restricting the application and promotion of composite wall technology.

[0006] How to achieve a fully assembled, tie-free structure for composite wall panels is a problem that this utility model urgently needs to solve.

[0007] It should be noted that the information disclosed in the background section of this utility model is intended only to enhance the understanding of the general background of this utility model, and should not be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] The purpose of this utility model is to propose a fully assembled, tie-free composite shear wall system;

[0009] To achieve this objective, this utility model first provides a fully assembled, tie-free composite shear wall system, comprising:

[0010] The lower composite shear wall includes a lower prefabricated outer leaf plate, a lower prefabricated inner leaf plate, and a lower composite cavity, wherein the lower composite cavity is formed between the lower prefabricated outer leaf plate and the lower prefabricated inner leaf plate.

[0011] The floor slab is cast into shape on the lower composite shear wall;

[0012] The upper-layer composite shear wall includes an upper prefabricated outer leaf plate, an upper prefabricated inner leaf plate, and an upper composite cavity, wherein the upper composite cavity is formed between the upper prefabricated outer leaf plate and the upper prefabricated inner leaf plate.

[0013] At least the lower precast outer leaf slab and / or the lower precast inner leaf slab have internal structural reinforcement bars that extend through the floor slab and into the upper composite cavity, with the extended portion forming an alignment lap with the internal structural reinforcement bars of the upper precast outer leaf slab and / or the upper precast inner leaf slab.

[0014] Preferably, the lower prefabricated outer blade includes a first lower prefabricated outer blade and a second lower prefabricated outer blade, and the lower prefabricated inner blade includes a first lower prefabricated inner blade and a second lower prefabricated inner blade; the lower composite cavity includes a first lower composite cavity and a second lower composite cavity that are interconnected; the first lower prefabricated outer blade, the first lower prefabricated inner blade, and the first lower composite cavity form a first lower composite shear wall, and the second lower prefabricated outer blade, the second lower prefabricated inner blade, and the second lower composite cavity form a second lower composite shear wall.

[0015] Preferably, the lower composite shear wall further includes a first connecting bar, one end of which is embedded and fixed in the first lower prefabricated outer leaf plate of the first lower composite shear wall, and the other end extends into the second lower composite cavity of the second lower composite shear wall, and forms an effective overlap with the structural bars in the second lower prefabricated outer leaf plate and / or the second lower prefabricated inner leaf plate.

[0016] Preferably, the structural reinforcement bars of the first lower precast outer leaf plate and the first lower precast inner leaf plate of the first lower composite shear wall extend into the upper composite shear wall to form an aligned lap joint; the structural reinforcement bars of the second lower precast outer leaf plate and the second lower precast inner leaf plate of the second lower composite shear wall extend into the upper composite shear wall to form an aligned lap joint.

[0017] Preferably, the lower stacked shear wall and the upper stacked shear wall are straight walls, corner walls, or winged walls with corresponding shapes.

[0018] Preferably, the lower stacked shear wall is a corner wall, and the lower stacked shear wall further includes a first tie rod assembly;

[0019] At least one set of the first tie-up components is tied to the first lower precast inner leaf plate of the first lower composite shear wall and the second lower precast outer leaf plate of the second lower composite shear wall; and / or at least one set of the first tie-up components is tied to the second lower precast inner leaf plate of the second lower composite shear wall and the first lower precast outer leaf plate of the first lower composite shear wall;

[0020] The first tie rod assembly extends through the corner of the corner wall.

[0021] Preferably, at least one set of the first tie rods is attached to the second lower precast outer leaf plate and the second lower precast inner leaf plate of the second lower composite shear wall and is located near the corner; the first tie rods are positioned offset from the first connecting rib.

[0022] Preferably, the lower composite shear wall is a winged wall, and the second lower composite shear wall is vertically connected to the middle of the first lower composite shear wall; the lower composite shear wall further includes a second tie assembly; at least one set of the second tie assembly is tied to the second lower precast outer leaf plate and the second lower precast inner leaf plate of the second lower composite shear wall and is close to the connection node of the winged wall; the position of the second tie assembly is offset from the first connecting bar.

[0023] The technical effects achieved by the above-mentioned technical solution of this utility model are derived from one or more of the following combinations:

[0024] Firstly, the structural reinforcement bars of the lower precast outer leaf slab and / or lower precast inner leaf slab of the lower composite shear wall are exposed for lap splicing of the upper composite shear wall. Through the uniform specifications brought about by the integrated nature of factory prefabrication, the position of the exposed reinforcement bars can be precisely aligned with the structural reinforcement bars of the upper precast outer leaf slab and upper precast inner leaf slab of the upper composite shear wall. The traditional upper and lower insert reinforcement bars are replaced with exposed reinforcement bars, achieving full assembly without on-site binding, and solving the problem of reinforcement bar misalignment and affecting structural safety during reinforcement bar lap splicing.

[0025] Whether it's a straight, L-shaped, or T-shaped node, it can be made fully assembled without on-site steel reinforcement binding, thereby improving efficiency and truly realizing the advantages of prefabricated construction.

[0026] Whether it's a straight, L-shaped, or T-shaped node, the first connecting bar can be pre-positioned in the factory and then used with lap bars (which can replace dowel bars in the structure) to form a concealed column structure, improving efficiency, truly realizing the advantages of prefabricated construction, and reducing costs. Attached Figure Description

[0027] Figure 1This diagram illustrates the nodes of the composite wall system in this invention.

[0028] Figure 2 This diagram illustrates the L-shaped structure of the lower composite wall described in this utility model.

[0029] Figure 3 This diagram illustrates the structure of the prefabricated L-shaped lower composite shear wall in this invention.

[0030] Figure 4 This diagram illustrates the installation of the first tie rod assembly in the L-shaped lower composite shear wall of this invention.

[0031] Figure 5 This diagram illustrates the assembly of the L-shaped lower composite shear wall in this invention.

[0032] Figure 6 This diagram illustrates the assembly of the L-shaped superimposed shear wall in this invention.

[0033] Figure 7 This diagram illustrates the T-shaped structure of the lower composite wall described in this utility model.

[0034] Figure 8 This diagram illustrates the installation of the second tie rod assembly in the T-shaped under-stacked shear wall of this invention.

[0035] Figure 9 This diagram illustrates the structure of the prefabricated T-shaped lower composite shear wall in this invention.

[0036] Figure 10 This diagram illustrates the assembly of the T-shaped lower composite shear wall in this invention.

[0037] Figure 11 This diagram illustrates the assembly of the T-shaped superimposed shear wall in this invention.

[0038] Figure 12 This diagram illustrates the assembly of the linear stacked shear wall in this invention.

[0039] Figure 13 This diagram illustrates the assembly of the linear stacked shear wall in this invention.

[0040] in:

[0041] 1. Lower composite shear wall; 10. Lower composite cavity; 10a. First lower composite cavity; 10b. Second lower composite cavity; 11. Lower precast outer leaf slab; 12. Lower precast inner leaf slab; 13. Structural reinforcement of lower composite shear wall; 130. Lap reinforcement; 1a. First lower composite shear wall; 1b. Second lower composite shear wall; 11a. First lower precast outer leaf slab; 12a. First lower precast inner leaf slab; 11b. Second lower precast outer leaf slab; 12b. Second lower precast inner leaf slab; 14. Tie bar; 15. First tie assembly; 16. Second tie assembly; 17. Third tie assembly; 18. Horizontal reinforcement of lower composite shear wall structure;

[0042] 2. Floor slab; 20. Cast-in-place composite layer; 21. Precast base slab;

[0043] 3. Upper composite shear wall; 30. Upper composite cavity; 30a. First upper composite cavity; 30b. Second upper composite cavity; 31. Upper precast outer leaf plate; 32. Upper precast inner leaf plate; 33. Longitudinal reinforcement of upper composite shear wall structure; 34. Transverse reinforcement of upper composite shear wall structure; 3a. First upper composite shear wall; 3b. Second upper composite shear wall;

[0044] 5. First connecting rib; 6. Hidden column structure. Detailed Implementation

[0045] The following description is provided to enable those skilled in the art to implement and use the present invention and to incorporate it into specific application contexts. Various modifications and uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to a wide range of embodiments. Therefore, the present invention is not limited to the embodiments given herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0046] In the following detailed description, numerous specific details are set forth to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that practice of the present invention is not necessarily limited to these specific details. In other words, well-known structures and devices are shown in block diagram form without detailed representation to avoid obscuring the present invention.

[0047] Readers should note all documents and references submitted concurrently with this specification and open to public inspection, the contents of which are incorporated herein by reference. Unless otherwise expressly stated, all features disclosed in this specification (including any appended claims, abstracts, and drawings) may be replaced by alternative features for the same, equivalent, or similar purposes. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a set of equivalent or similar features.

[0048] Note that, where used, the markings left, right, front, back, top, bottom, front, back, vertical, horizontal, clockwise, and counterclockwise are used merely for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or orientation between different parts of an object. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] The term "and / or" indicates that it can be either an "or" choice or an "and" parallel relationship.

[0051] Note that, in practice, "further," "preferably," "even further," and "more preferably" are simply starting points for describing another embodiment based on the foregoing embodiments. The combination of the content following "further," "preferably," "even further," or "more preferably" with the foregoing embodiments constitutes the complete configuration of another embodiment. Any combination of several "further," "preferably," "even further," or "more preferably" settings following the same embodiment can form yet another embodiment.

[0052] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0053] Application Overview:

[0054] In composite shear wall structures, when two walls are lapped together by reinforcing bars, the reinforcing bars are not required to be in direct contact. Instead, force is transferred through the bond strength of the concrete and the anchorage length. The core of this lap joint is to ensure that the reinforcing bars have sufficient anchorage length and a reliable connection structure in the concrete, rather than physical contact. The lap joint of reinforcing bars in composite walls essentially transfers stress through concrete as an intermediary. When the lapped bars at the joint of precast wall panels lap with the reinforcing bars inside the precast panels, the two are arranged parallel to each other in the concrete but are not in direct contact. Tensile or compressive force is transferred from one reinforcing bar to another through the bond strength of the concrete. The parallel arrangement of the two in the concrete is defined in this embodiment as an aligned lap or an effective lap.

[0055] Structural Example:

[0056] Please combine Figures 1-13 This embodiment provides a fully assembled, tie-free composite shear wall system. Please refer to [link / reference]. Figure 1 The system includes a lower composite shear wall 1 and an upper composite shear wall 3.

[0057] The lower composite shear wall 1 includes a lower precast outer blade 11, a lower precast inner blade 12, and a lower composite cavity 10, which is formed between the lower precast outer blade 11 and the lower precast inner blade 12. The upper composite shear wall 3 includes an upper precast outer blade 31, an upper precast inner blade 32, and an upper composite cavity 30, which is formed between the upper precast outer blade 31 and the upper precast inner blade 32.

[0058] like Figure 1 The structural reinforcement bars (collectively referred to as the lower composite shear wall structural reinforcement bars 13) in at least the lower precast outer leaf plate 11 and / or the lower precast inner leaf plate 12 are exposed. The exposed structural reinforcement bars (lap reinforcement bars 130) extend into the upper composite cavity 30, and the extended portion forms an alignment lap with the structural reinforcement bars (collectively referred to as the upper composite shear wall structural longitudinal reinforcement bars 33) in the upper precast outer leaf plate 31 and / or the upper precast inner leaf plate 32.

[0059] The reinforcement is provided at the ends of the lower precast outer leaf plate 11 and / or the lower precast inner leaf plate 12, and is bent inward at a certain slope and then extended upward into the upper composite cavity 30 of the upper composite shear wall 3.

[0060] The above technical solutions constitute the necessity for the implementation of this embodiment, and will be described in detail below with reference to the accompanying drawings:

[0061] As a preferred embodiment of this example, please refer to Figure 1 This embodiment also includes a floor slab 2, which is cast onto the lower composite shear wall 1; the structural reinforcement bars of the lower precast outer leaf slab 11 and / or the lower precast inner leaf slab 12 pass through the floor slab 2 and extend into the upper composite cavity 30. Specifically, the floor slab 2 is formed between the lower composite shear wall 1 and the upper composite shear wall 3.

[0062] As a preferred embodiment of this example, Figure 1 As shown, the ends of the lower precast outer leaf plate 11 and the lower precast inner leaf plate 12 simultaneously produce reinforcing bars (lapped bars 130 described later), which bend inward at a certain slope and extend upward into the upper composite cavity 30 of the upper composite shear wall 3. Since both the upper composite shear wall 3 and the lower composite shear wall 1 are precast in the factory, the positions of the structural reinforcing bars in the slabs are pre-aligned. Therefore, the lapped joints are achieved by producing reinforcing bars, which avoids misalignment and achieves accurate pre-alignment, which is simple and convenient.

[0063] Furthermore, the shapes of the upper composite shear wall 3 and the lower composite shear wall 1 can be straight, T-shaped, or L-shaped. This embodiment describes a T-shaped winged wall, an L-shaped corner wall, and a straight strip wall as specific implementation methods.

[0064] For details, please refer to Figures 2-6 Or refer to Figures 7-11 The lower precast outer leaf slab 11 includes a first lower precast outer leaf slab 11a and a second lower precast outer leaf slab 11b, and the lower precast inner leaf slab 12 includes a first lower precast inner leaf slab 12a and a second lower precast inner leaf slab 12b. The lower composite cavity 10 includes a first lower composite cavity 10a and a second lower composite cavity 10b that are interconnected. Specifically, the first lower precast outer leaf slab 11a, the first lower precast inner leaf slab 12a, and the first lower composite cavity 10a form a first lower composite shear wall 1a, and the second lower precast outer leaf slab 11b, the second lower precast inner leaf slab 12b, and the second lower composite cavity 10b form a second lower composite shear wall 1b. Based on common construction scenario requirements, the first lower composite shear wall 1a and the second lower composite shear wall 1b can be combined to form the aforementioned T-shaped winged wall, L-shaped corner wall, and straight strip wall.

[0065] For the corresponding information, please refer to [link / reference]. Figure 1 and Figure 6 In conjunction with the structure of the superimposed shear wall, the upper prefabricated outer leaf plate 31 includes a first upper prefabricated outer leaf plate and a second upper prefabricated outer leaf plate, and the upper prefabricated inner leaf plate 32 includes a first upper prefabricated inner leaf plate and a second upper prefabricated inner leaf plate. The superimposed cavity 30 includes a first superimposed cavity 30a and a second superimposed cavity 30b that are interconnected. Specifically, the first upper prefabricated outer leaf plate, the first upper prefabricated inner leaf plate, and the first superimposed cavity 30a form the first superimposed shear wall 3a, and the second upper prefabricated outer leaf plate, the second upper prefabricated inner leaf plate, and the second superimposed cavity 30b form the second superimposed shear wall 3b.

[0066] In this embodiment, the structural types of the upper composite shear wall 3 and the lower composite shear wall 1 can be the same or different in the same implementation scenario. This embodiment describes them as being the same, but those skilled in the art will understand that they can be different in the following description. Therefore, this embodiment focuses on the lower composite shear wall 1 for detailed structural description.

[0067] Furthermore, please combine Figure 1 and Figure 5The lower composite shear wall 1 also includes a first connecting bar 5. One end of the first connecting bar 5 is embedded and fixed in the first lower precast outer leaf plate 11a of the first lower composite shear wall 1a, and the other end extends into the second lower composite cavity 10b of the second lower composite shear wall 1b to form an overlap. The first connecting bar 5 serves as a connecting structural bar at the connection node between the first lower composite shear wall 1a and the second lower composite shear wall 1b. Its form is a ring bar, forming a composite hidden column structure 6 at the connection node (e.g., Figure 6 As shown, or Figure 11 (The area indicated by the red dotted line). The number of the first connecting bars 5 is not limited; they can be arranged sequentially along the wall height, or they can be combined with the structural outriggers (lapped bars 130) of the lower composite shear wall 1 to form a steel cage structure (see [reference]). Figure 5 or Figure 10 At this point, the ring reinforcement becomes the stirrup.

[0068] Similarly, the first connecting bar is also arranged in the upper composite shear wall 3, and its structural method is the same as that of the first connecting bar 5 in the lower composite shear wall 1.

[0069] As a preferred embodiment of this example, please refer to... Figure 1 and Figure 5 The structural reinforcement bars of the first lower precast outer leaf plate 11a and the first lower precast inner leaf plate 12a of the first lower composite shear wall 1a extend into the upper composite shear wall 3 to form an aligned lap joint; the structural reinforcement bars of the second lower precast outer leaf plate 11b and the second lower precast inner leaf plate 12b of the second lower composite shear wall 1b extend into the upper composite shear wall 3 to form an aligned lap joint.

[0070] Specifically, the structural reinforcement bars of the first lower precast outer leaf slab 11a and the first lower precast inner leaf slab 12a form lap reinforcement bars 130, which are formed by the structural reinforcement bars (longitudinal reinforcement bars) of the first lower precast outer leaf slab 11a and the first lower precast inner leaf slab 12a, thus aligning with the position of the structural reinforcement bars. The precast portions of the upper composite shear wall 3 and the lower composite shear wall 1 are precast to uniform specifications in the factory, so the structural reinforcement bars are aligned during installation. Consequently, the lap reinforcement bars 130 of the lower composite shear wall 1 are effectively lapped with the structural reinforcement bars (i.e., the longitudinal reinforcement bars 33 of the upper composite shear wall) within the slab of the upper composite shear wall 3.

[0071] Similarly, the first connecting bar 5 serves as the connecting structural bar at the connection node between the first lower composite shear wall 1a and the second lower composite shear wall 1b. Its position is also prefabricated and determined in the factory, and it is effectively lapped with the structural bars of the second lower composite shear wall 1b (i.e., the horizontal bars of the lower composite shear wall structure 18). The setting and principle of the first connecting bar 5 in the upper composite shear wall 3 are the same.

[0072] As a preferred embodiment of this example, please refer to Figures 2-6 and combined Figure 1 The upper composite shear wall 3 and the lower composite shear wall 1 are corner walls, and the lower composite shear wall 1 is described in detail.

[0073] Among them, such as Figure 5 As shown, the lower composite shear wall 1 also includes a first tie assembly 15; at least one set of first tie assemblies 15 are tied to the first lower precast inner leaf plate 12a of the first lower composite shear wall 1a and the second lower precast outer leaf plate 11b of the second lower composite shear wall 1b; and / or at least one set of first tie assemblies 15 are tied to the second lower precast inner leaf plate 12b of the second lower composite shear wall 1b and the first lower precast outer leaf plate 11a of the first lower composite shear wall 1a; the first tie assembly 15 passes through the corner of the corner wall. Preferably, multiple sets of first tie rods 15 are tied to the first lower precast inner leaf plate 12a of the first lower composite shear wall 1a and the second lower precast outer leaf plate 11b of the second lower composite shear wall 1b, with the multiple sets of first tie rods 15 arranged at intervals along the wall height direction; similarly, the arrangement is the same when the first tie rods 15 are tied to the second lower precast inner leaf plate 12b of the second lower composite shear wall 1b and the first lower precast outer leaf plate 11a of the first lower composite shear wall 1a.

[0074] Please see Figure 5 Since the first connecting rib 5 is provided in the first lower composite shear wall 1a and the second lower composite shear wall 1b, the tie ribs 14 for the inner and outer leaf plates are not provided at the first connecting rib 5 to prevent structural position conflicts. Furthermore, to prevent formwork bulging, at least one set of first tie assemblies 15 is provided to tie the second lower precast outer leaf plate 11b and the second lower precast inner leaf plate 12b of the second lower composite shear wall 1b and near the corner; the positions of the first tie assemblies 15 are offset from the first connecting rib 5. Preferably, multiple sets of first tie assemblies 15 are arranged sequentially with spacing along the wall height direction.

[0075] As another preferred embodiment of this invention, please refer to Figures 7-11 and combined Figure 1 The lower composite shear wall 1 is a winged wall, and the second lower composite shear wall 1b is vertically connected to the middle of the first lower composite shear wall 1a. The first lower composite shear wall 1a and the second lower composite shear wall 1b are connected by a T-shaped structure. One end of the first connecting bar 5 is embedded and fixed in the first lower prefabricated outer leaf plate 11a of the first lower composite shear wall 1a, and the other end extends into the second lower composite cavity 10b of the second lower composite shear wall 1b to form an effective overlap. Because the first connecting bar 5 is provided in the first lower composite shear wall 1a and the second lower composite shear wall 1b, the tie bars 14 of the inner and outer leaf plates are not provided at the first connecting bar 5 to prevent structural position conflicts. For further details, please refer to [link to relevant documentation]. Figure 10To prevent formwork bulging, the lower composite shear wall 1 also includes a second tie assembly 16. At least one set of second tie assemblies 16 is tied to the second lower precast outer leaf plate 11b and the second lower precast inner leaf plate 12b of the second lower composite shear wall 1b and is close to the wing wall connection node; the second tie assemblies 16 are staggered from the first connecting rib 5. Preferably, multiple sets of second tie assemblies 16 are arranged sequentially with spacing along the wall height direction.

[0076] As a preferred embodiment of this example, please refer to Figure 12 and Figure 13 and combined Figure 1 The lower composite shear wall 1 and the upper composite shear wall 3 are straight walls. The description will focus on the lower composite shear wall 1 as an example. The lower composite shear wall 1 is a straight wall (i.e., a strip wall), and the second lower composite shear wall 1b is laterally connected to one side of the first lower composite shear wall 1a. The first lower composite shear wall 1a and the second lower composite shear wall 1b are connected in a straight structure. One end of the first connecting reinforcement 5 can be embedded and fixed in the first lower precast outer leaf plate 11a or the first lower precast inner leaf plate 12a of the first lower composite shear wall 1a, or fixed (tied or welded) to the tie rod 14 of the first lower composite shear wall 1a; the other end extends into the second lower composite cavity 10b of the second lower composite shear wall 1b to form an effective overlap. As a preferred implementation method in the prefabrication stage, when the tie bar 14 is installed, it is generally tied to the steel mesh, so its position has a definite relative relationship with the steel mesh. Whether the first connecting bar 5 is embedded and fixed in the first lower prefabricated outer leaf plate 11a or the first lower prefabricated inner leaf plate 12a, or fixed (tied or welded) to the tie bar 14, its position can accurately achieve horizontal alignment and lap with the steel bars in the second lower composite shear wall 1b.

[0077] Furthermore, to prevent formwork bulging, the lower composite shear wall 1 also includes a third tie assembly 17. At least one set of third tie assemblies 17 is tied to the second lower precast outer leaf plate 11b and the second lower precast inner leaf plate 12b of the second lower composite shear wall 1b and is close to the wing wall connection node; the third tie assembly 17 is staggered from the first connecting rib 5. Preferably, multiple sets of third tie assemblies 17 are arranged sequentially with spacing along the wall height direction.

[0078] As can be seen from the above, the shapes of the upper composite shear wall 3 and the lower composite shear wall 1 can be the same or different in the same wall system. For example, the lower composite shear wall 1 is a T-shaped winged wall, and the upper composite shear wall 3 can be an L-shaped corner wall or a straight wall. As long as the initial purpose of the reinforcement of the lower composite shear wall 1 and the structural reinforcement of the upper composite shear wall 3 are aligned and overlapped, it is acceptable.

[0079] It should be noted that, in common understanding, the steel structure in the inner and outer leaf plates of a composite wall is a steel mesh, including longitudinally and transversely arranged reinforcing bars. However, in this embodiment, the effective overlap of the upper and lower composite walls is formed by longitudinal reinforcing bars arranged along the wall height (such as...). Figure 6 , Figure 11 and Figure 13 In the context of the upper composite shear wall structure, the longitudinal reinforcement 33), therefore, the structural reinforcement that forms an effective lap with the lapped reinforcement 130 refers to this longitudinal reinforcement; while in this embodiment, the effective lap of the horizontal composite shear wall is formed by the transverse reinforcement arranged horizontally, therefore, the structural reinforcement that forms an effective lap with the first connecting reinforcement 5 refers to this transverse reinforcement (such as...). Figure 1 (34) Horizontal reinforcement bars in the superimposed shear wall structure.

[0080] It is worth mentioning that the first connecting bar 5 in this embodiment is arranged at intervals along the height of the wall and is prefabricated and fixed in the factory. The first connecting bar 5 of each layer also corresponds to the transverse reinforcing bars in the steel mesh of the wall (i.e., Figure 1 The upper and middle composite shear wall structure has horizontal reinforcement 34, thus forming an effective overlap of two composite walls in the transverse direction, whether it is a straight wall, a corner wall or a winged wall.

[0081] Furthermore, the present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A fully assembled and tied no-tie composite shear wall system, characterized in that, include: The lower composite shear wall includes a lower prefabricated outer leaf plate, a lower prefabricated inner leaf plate, and a lower composite cavity, wherein the lower composite cavity is formed between the lower prefabricated outer leaf plate and the lower prefabricated inner leaf plate. The upper-layer composite shear wall includes an upper prefabricated outer leaf plate, an upper prefabricated inner leaf plate, and an upper composite cavity, wherein the upper composite cavity is formed between the upper prefabricated outer leaf plate and the upper prefabricated inner leaf plate. At least the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate have internal structural ribs extending out, the structural ribs extending out into the upper overlapping cavity, and the extended portion forming an alignment and overlap with the internal structural ribs of the upper prefabricated outer blade plate and / or the upper prefabricated inner blade plate.

2. The fully assembled tie-encased composite shear wall system of claim 1, wherein: It also includes a floor slab, which is cast into the lower composite shear wall; the structural reinforcement bars of the lower precast outer leaf slab and / or the lower precast inner leaf slab pass through the floor slab and extend into the upper composite cavity.

3. The fully assembled tie-encased composite shear wall system of claim 1, wherein: The lower prefabricated outer leaf plate includes a first lower prefabricated outer leaf plate and a second lower prefabricated outer leaf plate; the lower prefabricated inner leaf plate includes a first lower prefabricated inner leaf plate and a second lower prefabricated inner leaf plate; the lower composite cavity includes a first lower composite cavity and a second lower composite cavity that are interconnected; the first lower prefabricated outer leaf plate, the first lower prefabricated inner leaf plate and the first lower composite cavity form a first lower composite shear wall; the second lower prefabricated outer leaf plate, the second lower prefabricated inner leaf plate and the second lower composite cavity form a second lower composite shear wall.

4. The fully assembled tie-encased composite shear wall system according to claim 3, wherein: The lower composite shear wall also includes a first connecting bar, one end of which is embedded and fixed in the first lower prefabricated outer leaf plate of the first lower composite shear wall, and the other end extends into the second lower composite cavity of the second lower composite shear wall, and forms an effective overlap with the structural bars in the second lower prefabricated outer leaf plate and / or the second lower prefabricated inner leaf plate.

5. The fully assembled tie-encased wall system of claim 4, wherein: The structural reinforcement bars of the first lower precast outer leaf plate and the first lower precast inner leaf plate of the first lower composite shear wall extend into the upper composite shear wall to form an aligned lap joint; the structural reinforcement bars of the second lower precast outer leaf plate and the second lower precast inner leaf plate of the second lower composite shear wall extend into the upper composite shear wall to form an aligned lap joint.

6. The fully assembled tie-encased wall system of claim 4 or 5, wherein: The lower stacked shear wall and the upper stacked shear wall are straight walls, corner walls, or winged walls with corresponding shapes.

7. The fully assembled, tie-free composite shear wall system as described in claim 6, characterized in that: The lower stacked shear wall is a corner wall, and the lower stacked shear wall also includes a first tie rod assembly; At least one set of the first tie-up components is tied to the first lower precast inner leaf plate of the first lower composite shear wall and the second lower precast outer leaf plate of the second lower composite shear wall; and / or at least one set of the first tie-up components is tied to the second lower precast inner leaf plate of the second lower composite shear wall and the first lower precast outer leaf plate of the first lower composite shear wall; The first tie rod assembly extends through the corner of the corner wall.

8. The fully assembled, tie-free composite shear wall system as described in claim 7, characterized in that: At least one set of the first tie rods is attached to the second lower precast outer leaf plate and the second lower precast inner leaf plate of the second lower composite shear wall and is located near the corner; the first tie rods are positioned off-center from the first connecting rib.

9. The fully assembled, tie-free composite shear wall system as described in claim 6, characterized in that: The lower composite shear wall is a winged wall, and the second lower composite shear wall is vertically connected to the middle of the first lower composite shear wall; the lower composite shear wall also includes a second tie assembly; at least one set of the second tie assembly is tied to the second lower precast outer leaf plate and the second lower precast inner leaf plate of the second lower composite shear wall and is close to the connection node of the winged wall; the position of the second tie assembly is offset from the first connecting bar.

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