Fully-assembled binding-free superposed shear wall system and construction method thereof

Abstract

The invention provides a full-assembly binding-free laminated shear wall system and a construction method thereof, and belongs to the field of assembly type buildings. The full-assembly binding-free laminated shear wall system comprises a lower laminated shear wall and an upper laminated shear wall; the lower laminated shear wall comprises a lower prefabricated outer acanthus, a lower prefabricated inner acanthus and a lower laminated cavity, and the lower laminated cavity is formed between the lower prefabricated outer acanthus and the lower prefabricated inner acanthus; the upper superimposed shear wall comprises an upper prefabricated outer acanthus, an upper prefabricated inner acanthus and an upper superimposed cavity, and the upper superimposed cavity is formed between the upper prefabricated outer acanthus and the upper prefabricated inner acanthus. And at least the structural ribs in the lower prefabricated outer acanthus and / or the lower prefabricated inner acanthus are exposed, the structural ribs are exposed and extend into the upper overlapping cavity, and the extending parts and the structural ribs in the upper prefabricated outer acanthus and / or the upper prefabricated inner acanthus form aligned effective lap joint.

Description

Technical Field

[0001] The present invention belongs to the field of prefabricated buildings, and in particular relates to a fully assembled binding-free composite shear wall system and a construction method thereof. Background Art

[0002] Existing composite walls in the field of prefabricated buildings generally include inner blades, outer blades and a composite layer in the middle; the inner blades and outer blades are tied together by tie bars, and are prefabricated in the factory and transported to the site for installation and pouring.

[0003] In the prior art, for the construction of upper and lower composite walls, the lower composite wall is first installed and the prefabricated bottom plate of the floor slab is laid on the inner and outer blades of the lower composite wall; the connecting reinforcement for overlapping with the upper composite wall is manually installed, and then the composite layer of the floor slab and the composite layer of the composite wall are cast as a whole; finally, the upper composite wall is installed and overlapped by the connecting reinforcement.

[0004] One problem is that when installing the connecting reinforcement, manual positioning and tying are required, which causes the connecting reinforcement to be misaligned with the structural reinforcement in the composite wall, posing a major safety hazard. This hazard exists in both L-shaped composite walls (corner walls) and T-shaped composite walls (wing walls).

[0005] For example, the practices outlined in the Shanghai Landmark Atlas' "Technical Specification for Prefabricated Integral Composite Shear Wall Structures" (DGTJ08-2266-2018) and the Jiangsu Landmark Atlas' "Technical Specification for Prefabricated Integral Composite Shear Wall Structures" (DB32T 4497-2023) use dowel bars for connections in both L-shaped composite walls (corner walls) and T-shaped composite walls (winged walls). This requires extensive reinforcement tying and additional reinforcement tying, as well as formwork support, at corner concealed columns. Furthermore, the connection between the upper and lower precast composite walls is heavily doweled and misaligned, resulting in low construction efficiency, high costs, and difficulty bridging the prefabrication and cast-in-place processes. This poses safety risks and significantly hinders the application and promotion of composite wall technology.

[0006] So how to realize the fully assembled and binding-free structure of the composite wall panels is a problem to be solved urgently by the present invention.

[0007] It should be noted that the information disclosed in the background technology section of the invention is only intended to deepen the understanding of the general background technology of the invention, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the Invention

[0008] One purpose of the present invention is to provide a fully assembled, binding-free composite shear wall system; The second object of the present invention is to provide a construction method for a fully assembled, binding-free composite shear wall system; To achieve one of the above objectives, the present invention first provides a fully assembled, binding-free composite shear wall system, comprising: a lower composite shear wall, the lower composite shear wall comprising a lower prefabricated outer blade plate, a lower prefabricated inner blade plate, and a lower composite cavity, wherein the lower composite cavity is formed between the lower prefabricated outer blade plate and the lower prefabricated inner blade plate; A floor slab, the floor slab being cast on the lower composite shear wall; An upper composite shear wall, the upper composite shear wall comprising an upper prefabricated outer blade plate, an upper prefabricated inner blade plate and an upper composite cavity, wherein the upper composite cavity is formed between the upper prefabricated outer blade plate and the upper prefabricated inner blade plate; At least the lower prefabricated outer blade and / or the lower prefabricated inner blade have internal structural reinforcement bars, which pass through the floor slab and extend into the upper overlapping cavity, and the extended portion forms a counter-joint with the internal structural reinforcement bars of the upper prefabricated outer blade and / or the upper prefabricated inner blade.

[0009] 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 superimposed cavity includes a first lower superimposed cavity and a second lower superimposed cavity that are interconnected; the first lower prefabricated outer blade, the first lower prefabricated inner blade and the first lower superimposed cavity form a first lower superimposed shear wall, and the second lower prefabricated outer blade, the second lower prefabricated inner blade and the second lower superimposed cavity form a second lower superimposed shear wall.

[0010] Preferably, the lower composite shear wall also includes a first connecting rib, one end of which is embedded and fixed in the first lower prefabricated outer blade 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 ribs in the second lower prefabricated outer blade and / or the second lower prefabricated inner blade.

[0011] Preferably, the structural reinforcement bars of the first lower prefabricated outer blade plate and the first lower prefabricated inner blade plate of the first lower composite shear wall extend into the upper composite shear wall to form a counter-joint; the structural reinforcement bars of the second lower prefabricated outer blade plate and the second lower prefabricated inner blade plate of the second lower composite shear wall extend into the upper composite shear wall to form a counter-joint.

[0012] Preferably, the lower composite shear wall and the upper composite shear wall are straight walls, corner walls or winged walls with corresponding shapes.

[0013] Preferably, the lower composite shear wall is a corner wall, and the lower composite shear wall further comprises a first tension assembly; At least one group of the first tensioning components is tensioned on the first lower prefabricated inner blade plate of the first lower composite shear wall and the second lower prefabricated outer blade plate of the second lower composite shear wall; and / or at least one group of the first tensioning components is tensioned on the second lower prefabricated inner blade plate of the second lower composite shear wall and the first lower prefabricated outer blade plate of the first lower composite shear wall; The first tensioning assembly runs through the corner of the corner wall.

[0014] Preferably, there is at least one group of the first tensioning components that tension the second lower prefabricated outer blade plate and the second lower prefabricated inner blade plate of the second lower composite shear wall and are close to the corner; the first tensioning components are offset from the first connecting ribs.

[0015] Preferably, the lower composite shear wall is a winged wall, and the second lower composite shear wall is vertically connected to the middle part of the first lower composite shear wall; the lower composite shear wall also includes a second tensioning assembly; at least one group of the second tensioning assemblies is tensioned on the second lower prefabricated outer blade plate and the second lower prefabricated inner blade plate of the second lower composite shear wall and is close to the winged wall connection node; the second tensioning assembly is offset from the first connecting rib.

[0016] The present invention also provides a construction method for a fully assembled, binding-free composite shear wall system, comprising the following steps: precast lower composite shear wall and precast parts of upper composite shear wall; Installing the lower composite shear wall, installing the prefabricated portion of the lower composite shear wall, and maintaining the structural reinforcement bars in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extending upward; Casting the floor slab, casting the floor slab on the lower composite shear wall, and keeping the structural reinforcement bars in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extending upward through the floor slab; Installing the upper composite shear wall, installing the prefabricated portion of the upper composite shear wall, keeping the structural reinforcement of the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extended in the upper composite cavity, and forming an aligned overlap with the structural reinforcement of the upper prefabricated outer blade plate and / or the upper prefabricated inner blade plate; Cast the upper superimposed cavity.

[0017] Preferably, the structural reinforcements in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extend inwards to form a certain slope and then extend upwards.

[0018] The technical effects produced by the above technical solutions of the present invention come from one or more of the following combinations: First, the structural reinforcement of the lower prefabricated outer blade and / or the lower prefabricated inner blade of the lower composite shear wall is extended for the overlap of the upper composite shear wall. The unified specifications and standards brought about by the integration of factory prefabrication make it possible to accurately align the position of the structural reinforcement of the upper prefabricated outer blade and the upper prefabricated inner blade of the upper composite shear wall; the traditional upper and lower inserted reinforcement is changed to extended reinforcement, and full assembly is achieved on site without binding, thus solving the problem of misalignment of steel bars during overlap and affecting structural safety.

[0019] Whether it is a straight, L-shaped or T-shaped node, it can be fully assembled and no steel bar binding is required on site, thereby improving efficiency and truly realizing the advantages of prefabrication.

[0020] Whether it is a straight-line, L-shaped or T-shaped node, the first connecting reinforcement can be pre-positioned in the factory and then combined with the lap reinforcement (which can replace the inserted reinforcement in the structure) to form a hidden column structure, thereby improving efficiency, truly realizing the advantages of assembly and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the nodes of the composite wall system in the present invention is expressed.

[0022] Figure 2 A schematic diagram of the L-shaped structure of the lower composite wall of the present invention is expressed.

[0023] Figure 3 The schematic diagram of the structure of the prefabricated part of the L-shaped lower composite shear wall in the present invention is expressed.

[0024] Figure 4 The schematic diagram of the installation of the first tension component in the L-shaped lower composite shear wall of the present invention is expressed.

[0025] Figure 5 The schematic diagram of the assembly of the L-shaped lower composite shear wall in the present invention is expressed.

[0026] Figure 6 The figure shows the assembly diagram of the L-shaped upper composite shear wall in the present invention.

[0027] Figure 7 A schematic diagram of the T-shaped structure of the lower composite wall of the present invention is expressed.

[0028] Figure 8 The schematic diagram of the installation of the second tension component in the T-shaped lower composite shear wall of the present invention is expressed.

[0029] Figure 9 The schematic diagram of the structure of the prefabricated part of the T-shaped lower composite shear wall in the present invention is expressed.

[0030] Figure 10 The schematic diagram of the assembly of the T-shaped lower composite shear wall in the present invention is expressed.

[0031] Figure 11 The schematic diagram of the assembly of the T-shaped upper composite shear wall in the present invention is expressed.

[0032] Figure 12 The figure shows the assembly diagram of the I-shaped lower composite shear wall in the present invention.

[0033] Figure 13 The figure shows the assembly diagram of the I-shaped upper composite shear wall in the present invention.

[0034] in: 1. Lower composite shear wall; 10. Lower composite cavity; 10a. First lower composite cavity; 10b. Second lower composite cavity; 11. Lower precast outer blade; 12. Lower precast inner blade; 13. Lower composite shear wall structural reinforcement; 130. Lap reinforcement; 1a. First lower composite shear wall; 1b. Second lower composite shear wall; 11a. First lower precast outer blade; 12a. First lower precast inner blade; 11b. Second lower precast outer blade; 12b. Second lower precast inner blade; 14. Tension reinforcement; 15. First tension assembly; 16. Second tension assembly; 17. Third tension assembly; 18. Lower composite shear wall structural transverse reinforcement; 2. Floor slab; 20. Cast-in-place composite layer; 21. Precast base slab; 3. Upper composite shear wall; 30. Upper composite cavity; 30a. First upper composite cavity; 30b. Second upper composite cavity; 31. Upper precast outer blade; 32. Upper precast inner blade; 33. Upper composite shear wall longitudinal reinforcement; 34. Upper composite shear wall transverse reinforcement; 3a. First upper composite shear wall; 3b. Second upper composite shear wall; 5. The first connecting reinforcement; 6. Hidden column structure. DETAILED DESCRIPTION

[0035] The following description is provided to enable those skilled in the art to make and use the present invention and to incorporate it into a specific application context. 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. Thus, the present invention is not limited to the embodiments set forth herein, but should be accorded the broadest scope consistent with the principles and novel features disclosed herein.

[0036] In the following detailed description, many 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 the practice of the present invention need not be limited to these specific details. In other words, known structures and devices are shown in block diagram form without detailed display to avoid obscuring the present invention.

[0037] The reader's attention is drawn to all documents and materials filed concurrently with this specification and open to public inspection, and the contents of all such documents and materials are incorporated herein by reference. Unless otherwise expressly stated, all features disclosed in this specification (including any accompanying claims, abstracts, and drawings) may be replaced by alternative features serving the same, equivalent, or similar purpose. Therefore, unless expressly stated otherwise, each feature disclosed is merely an example of a group of equivalent or similar features.

[0038] Note that, where used, the terms left, right, front, back, top, bottom, forward, reverse, vertical, horizontal, clockwise, and counterclockwise are used for convenience only and do not imply any specific fixed direction. Instead, they are used to reflect the relative position and / or orientation of various 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.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical connections; direct connections or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] The term "and / or" indicates that it can be either an alternative relationship of "or" or a parallel relationship of "and".

[0041] Note that, where used, "further," "preferably," "further," and "more preferably" are simply prefaces for describing another embodiment based on the preceding embodiment. The contents of the "further," "preferably," "further," or "more preferably" combined with the preceding embodiment constitute a complete configuration of another embodiment. Multiple "further," "preferably," "more preferably," or "more preferably" clauses appended to the same embodiment can be arbitrarily combined to form yet another embodiment.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the various 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.

[0043] Application Overview: In a composite shear wall structure, when two walls are overlapped by steel bars, direct contact between the steel bars is not required. Instead, force transfer is achieved through the bonding strength and anchorage length of the concrete. The core of this overlap is to ensure that the steel bars have sufficient anchorage length and reliable connection structure in the concrete, rather than physical contact. The essence of the steel bar overlap of the composite wall is to transfer stress through concrete as an intermediary. When the overlap bars at the joints of the prefabricated wall panels are overlapped with the steel bars in the prefabricated panels, the two are arranged in parallel in the concrete but are not in direct contact. The tension or pressure is transferred from one steel bar to the other through the bonding strength of the concrete, and the form of the two being arranged in parallel in the concrete is defined as a counter-lap or effective overlap in this embodiment.

[0044] Structural embodiment: Please combine Figures 1 to 13 This embodiment provides a fully assembled, binding-free composite shear wall system. First, please refer to Figure 1 The system includes a lower composite shear wall 1 and an upper composite shear wall 3.

[0045] Among them, the lower composite shear wall 1 includes a lower prefabricated outer blade 11, a lower prefabricated inner blade 12 and a lower composite cavity 10, and the lower composite cavity 10 is formed between the lower prefabricated outer blade 11 and the lower prefabricated inner blade 12; the upper composite shear wall 3 includes an upper prefabricated outer blade 31, an upper prefabricated inner blade 32 and an upper composite cavity 30, and the upper composite cavity 30 is formed between the upper prefabricated outer blade 31 and the upper prefabricated inner blade 32.

[0046] like Figure 1 As described above, at least the structural reinforcement (collectively referred to as the lower composite shear wall structural reinforcement 13) in the lower prefabricated outer blade plate 11 and / or the lower prefabricated inner blade plate 12 is extended, and the structural reinforcement (lap reinforcement 130) is extended and extended into the upper composite cavity 30, and the extended portion forms a counter-lap joint with the structural reinforcement (collectively referred to as the upper composite shear wall structural longitudinal reinforcement 33) in the upper prefabricated outer blade plate 31 and / or the upper prefabricated inner blade plate 32.

[0047] The reinforcement is provided at the end of the lower prefabricated outer blade 11 and / or the lower prefabricated inner blade 12 , which is bent inward at a certain slope and then extends upward into the upper composite cavity 30 of the upper composite shear wall 3 .

[0048] The above technical solutions are necessary for the implementation of this embodiment and are described in detail below with reference to the accompanying drawings: As a preferred implementation of this embodiment, please refer to Figure 1 This embodiment further includes a floor slab 2, which is cast on the lower composite shear wall 1. Structural reinforcement bars in the lower precast outer blade 11 and / or lower precast inner blade 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.

[0049] As a preferred implementation of this embodiment, Figure 1 As shown, the ends of the lower precast outer blade 11 and the lower precast inner blade 12 are simultaneously reinforced with reinforcement (latching reinforcement 130, described later). These reinforcements bend inward at a certain slope and then extend upward into the upper composite cavity 30 of the upper composite shear wall 3. Because both the upper composite shear wall 3 and the lower composite shear wall 1 are prefabricated in the factory, the structural reinforcement within the panels is pre-aligned. Therefore, the overlapping reinforcement is achieved by the reinforcement, eliminating misalignment and achieving accurate pre-positioning, which is simple and convenient.

[0050] Furthermore, the upper composite shear wall 3 and the lower composite shear wall 1 can be in the shape of a straight line, a T-shaped wall, or an L-shaped wall. This embodiment is described using a T-shaped winged wall, an L-shaped corner wall, and a straight line wall as specific implementations.

[0051] For details, please refer to Figures 2 to 6 , or see Figures 7 to 11 The lower prefabricated outer blade 11 includes a first lower prefabricated outer blade 11a and a second lower prefabricated outer blade 11b, and the lower prefabricated inner blade 12 includes a first lower prefabricated inner blade 12a and a second lower prefabricated inner blade 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 prefabricated outer blade 11a, the first lower prefabricated inner blade 12a and the first lower composite cavity 10a form a first lower composite shear wall 1a, and the second lower prefabricated outer blade 11b, the second lower prefabricated inner blade 12b and the second lower composite cavity 10b form a second lower composite shear wall 1b. The first lower composite shear wall 1a and the second lower composite shear wall 1b can be combined into the above-mentioned T-shaped wing wall, L-shaped corner wall and I-shaped strip wall based on the requirements of common construction scenarios.

[0052] For corresponding reference, see Figure 1 and Figure 6 In conjunction with the structure of the upper composite shear wall, the upper precast outer blade 31 includes a first upper precast outer blade and a second upper precast outer blade, and the upper precast inner blade 32 includes a first upper precast inner blade and a second upper precast inner blade. The upper composite cavity 30 includes a first upper composite cavity 30a and a second upper composite cavity 30b that are interconnected. Specifically, the first upper precast outer blade, the first upper precast inner blade, and the first upper composite cavity 30a form the first upper composite shear wall 3a, while the second upper precast outer blade, the second upper precast inner blade, and the second upper composite cavity 30b form the second upper composite shear wall 3b.

[0053] 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 is described as if they are the same. However, those skilled in the art will also understand that they can be different. Therefore, this embodiment uses the lower composite shear wall 1 as the object for detailed structural description.

[0054] Further, please combine Figure 1 and Figure 5 The lower composite shear wall 1 further includes a first connecting rib 5, one end of which is embedded and fixed in the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a, and the other end of which extends into the second lower composite cavity 10b of the second lower composite shear wall 1b to form an overlap. The first connecting rib 5 serves as a structural rib connecting the connection node between the first lower composite shear wall 1a and the second lower composite shear wall 1b. It is in the form of a ring rib, forming a composite hidden column structure 6 (such as Figure 6 shown, or Figure 11 The number of the first connecting bars 5 is not limited and can be arranged in sequence along the wall height direction. They can also be combined with the structural reinforcement of the lower composite shear wall 1 (lap reinforcement 130) to form a steel cage structure (see Figure 5 or Figure 10 ), at this time the ring reinforcement becomes stirrups.

[0055] Similarly to the lower composite shear wall 1 , the upper composite shear wall 3 is also arranged with first connecting bars, and its structural manner is equivalent to the arrangement manner of the first connecting bars 5 in the lower composite shear wall 1 .

[0056] As a preferred implementation of this embodiment, please combine Figure 1 and Figure 5 The structural reinforcement bars in the first lower prefabricated outer blade 11a and the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a extend into the upper composite shear wall 3 to form a counter-joint; the structural reinforcement bars in the second lower prefabricated outer blade 11b and the second lower prefabricated inner blade 12b of the second lower composite shear wall 1b extend into the upper composite shear wall 3 to form a counter-joint.

[0057] Specifically, lap bars 130 are formed by extending the structural reinforcement (longitudinal reinforcement) from the first lower precast outer blade plate 11a and the first lower precast inner blade plate 12a. These bars align with the structural reinforcement. The precast portions of the upper composite shear wall 3 and the lower composite shear wall 1 are prefabricated to the same specifications in the factory, so the structural reinforcement is aligned during installation. Consequently, the lap bars 130 of the lower composite shear wall 1 align with the structural reinforcement (i.e., the structural longitudinal reinforcement 33) within the upper composite shear wall 3, effectively overlapping the lap bars.

[0058] Similarly, the first connecting reinforcement 5 serves as the structural reinforcement 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 is effectively overlapped with the structural reinforcement of the second lower composite shear wall 1b (i.e., the transverse reinforcement 18 of the lower composite shear wall structure); the setting and principle of the first connecting reinforcement 5 in the upper composite shear wall 3 are also the same.

[0059] As a preferred implementation of this embodiment, please refer to Figures 2 to 6 Combined with 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.

[0060] Among them, Figure 5 As shown, the lower composite shear wall 1 also includes a first tensioning component 15; at least one group of first tensioning components 15 is tensioned on the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a and the second lower prefabricated outer blade 11b of the second lower composite shear wall 1b; and / or at least one group of first tensioning components 15 is tensioned on the second lower prefabricated inner blade 12b of the second lower composite shear wall 1b and the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a; the first tensioning component 15 runs through the corner of the corner wall. Preferably, multiple groups of first tensioning components 15 are tensioned on the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a and the second lower prefabricated outer blade 11b of the second lower composite shear wall 1b, and multiple groups of first tensioning components 15 are arranged in sequence along the wall height direction; similarly, when the first tensioning components 15 are tensioned on the second lower prefabricated inner blade 12b of the second lower composite shear wall 1b and the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a, the settings shall refer to this.

[0061] See also Figure 5 Because the first lower composite shear wall 1a and the second lower composite shear wall 1b are connected by first connecting bars 5, the inner and outer plate tension bars 14 are not installed at the first connecting bars 5 to prevent structural position conflicts. Furthermore, to prevent mold expansion, at least one set of first tensioning assemblies 15 is positioned near the corners of the second lower precast outer plate 11b and the second lower precast inner plate 12b of the second lower composite shear wall 1b; these first tensioning assemblies 15 are offset from the first connecting bars 5. Preferably, multiple sets of first tensioning assemblies 15 are spaced and arranged sequentially along the wall height.

[0062] As another preferred implementation of this embodiment, please refer to Figures 7 to 11 Combined with 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 with a T-shaped structure. One end of the first connecting rib 5 is buried and fixed in the first lower prefabricated outer blade 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. Due to the first connecting rib 5 provided in the first lower composite shear wall 1a and the second lower composite shear wall 1b, in order to prevent structural position conflicts, the tensioning ribs 14 of the inner and outer blades are not provided at the first connecting rib 5. For further information, please refer to Figure 10 To prevent mold expansion, the lower composite shear wall 1 also includes second tensioning assemblies 16. At least one set of second tensioning assemblies 16 is positioned to tension the second lower precast outer blade 11b and second lower precast inner blade 12b of the second lower composite shear wall 1b, near the wing wall connection node. The second tensioning assemblies 16 are offset from the first connecting rib 5. Preferably, multiple sets of second tensioning assemblies 16 are spaced and arranged sequentially along the height of the wall.

[0063] As a preferred implementation of this embodiment, please refer to Figure 12 and Figure 13 Combined with Figure 1 , the lower composite shear wall 1 and the upper composite shear wall 3 are I-shaped walls, and the lower composite shear wall 1 is taken as an example for description. The lower composite shear wall 1 is an I-shaped wall (i.e., a strip wall), and the second lower composite shear wall 1b is horizontally 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 an I-shaped structure. At this time, one end of the first connecting reinforcement 5 can be embedded and fixed in the first lower prefabricated outer blade 11a or the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a, or fixed (tied or welded) on the tension reinforcement 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 embodiment in the prefabrication stage, when the tie bars 14 are installed, they are generally tied to the steel mesh, so their position has a certain relative relationship with the steel mesh, and the first connecting bar 5, whether embedded and fixed in the first lower prefabricated outer blade 11a or the first lower prefabricated inner blade 12a, or fixed (tied or welded) on the tie bars 14; its position can accurately achieve horizontal overlap with the steel bars in the second lower composite shear wall 1b.

[0064] Furthermore, to prevent mold expansion, the lower composite shear wall 1 also includes third tensioning assemblies 17. At least one set of third tensioning assemblies 17 is positioned to tension the second lower precast outer blade 11b and second lower precast inner blade 12b of the second lower composite shear wall 1b, near the wing wall connection node. The third tensioning assemblies 17 are offset from the first connecting rib 5. Preferably, multiple sets of third tensioning assemblies 17 are spaced and arranged sequentially along the height of the wall.

[0065] From the above, it can be seen that 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 can be a T-shaped winged wall, and the upper composite shear wall 3 can be an L-shaped corner wall or a straight wall; it only needs to meet the original purpose of forming a counter-lap joint between the reinforcement of the lower composite shear wall 1 and the structural reinforcement of the upper composite shear wall 3.

[0066] It should be noted that in common sense, the steel structure in the inner and outer blades of the composite wall is a steel mesh, including steel bars arranged in a crisscross pattern. In this embodiment, the effective overlap of the upper and lower composite walls is formed by the longitudinal steel bars arranged along the wall height (such as Figure 6 、 Figure 11 and Figure 13 The upper composite shear wall structural longitudinal reinforcement 33 in the embodiment is referred to as the structural reinforcement that forms an effective overlap with the lap reinforcement 130. In this embodiment, the horizontal composite shear wall is effectively overlapped with the horizontally arranged transverse reinforcement. Therefore, the structural reinforcement that forms an effective overlap with the first connecting reinforcement 5 is referred to as the transverse reinforcement (such as Figure 1 The upper composite shear wall structure transverse reinforcement 34).

[0067] It is worth mentioning that the first connecting bars 5 of this embodiment are arranged along the wall height intervals and are prefabricated and fixed in the factory. The first connecting bars 5 of each layer also correspond to the transverse steel bars in the steel mesh of the wall (i.e. Figure 1 The middle and upper composite shear wall structure transverse reinforcement 34) forms an effective overlap of the two composite walls in the transverse direction, whether it is a straight wall, a corner wall or a wing wall.

[0068] Method Example: Please combine Figures 1 to 13 This embodiment provides a construction method for a composite shear wall system, which mainly includes the following steps: S1 prefabricated lower composite shear wall 1 and prefabricated parts of upper composite shear wall 3.

[0069] It should be noted that in this embodiment, the upper composite shear wall 3 and the lower composite shear wall 1 have the same structural type within the same implementation scenario, and the concepts of "upper" and "lower" are relative. In a two-story structure, the upper composite shear wall 3 and the lower composite shear wall 1 form a spatially upper and lower structure. In a three-story structure, the upper composite shear wall 3 on the second floor also serves as the lower composite shear wall 1 on the third floor. Therefore, the detailed structural description will focus on the lower composite shear wall 1.

[0070] The term "prefabricated portion" generally refers to a prefabricated structure that is prefabricated and formed in a factory. Specifically, the prefabricated portion of the lower composite shear wall 1 includes a lower prefabricated outer blade 11, a lower prefabricated inner blade 12, and a lower composite cavity 10. The lower composite cavity 10 is formed between the lower prefabricated outer blade 11 and the lower prefabricated inner blade 12. Structural reinforcement is provided inside the lower prefabricated outer blade 11 and the lower prefabricated inner blade 12; the two are connected by tension bars 14. The prefabricated portion of the upper composite shear wall 3 is similar to this. This is common knowledge about composite walls and will not be elaborated on.

[0071] During the prefabrication stage, at least the structural reinforcements in the lower prefabricated outer blade 11 and / or the lower prefabricated inner blade 12 (collectively referred to as the lower composite shear wall structural reinforcements 13) are extended (hereinafter referred to as lap reinforcements 130). The length of the structural reinforcements (i.e., lap reinforcements 130) is long enough to pass through the floor slab 2 and extend into the upper composite cavity 30. The extended portion forms a lap joint with the structural reinforcements in the upper prefabricated outer blade 31 and / or the upper prefabricated inner blade 32 (collectively referred to as the upper composite shear wall structural longitudinal reinforcements 33) (please refer to the following). Figure 1 and Figure 11 ).

[0072] Please combine Figure 1 The reinforcement is provided at the end of the lower prefabricated outer blade 11 and / or the lower prefabricated inner blade 12, which bends inward at a certain slope and then extends upward into the upper composite cavity 30 of the upper composite shear wall 3.

[0073] Furthermore, the upper composite shear wall 3 and the lower composite shear wall 1 can be in the shape of a straight line, a T-shaped wall, or an L-shaped wall. This embodiment is described using T-shaped winged walls, L-shaped corner walls, and straight line walls as specific implementations.

[0074] For details, please refer to Figures 2 to 6 , or see Figures 7 to 11The lower prefabricated outer blade 11 includes a first lower prefabricated outer blade 11a and a second lower prefabricated outer blade 11b, and the lower prefabricated inner blade 12 includes a first lower prefabricated inner blade 12a and a second lower prefabricated inner blade 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 prefabricated outer blade 11a, the first lower prefabricated inner blade 12a, and the first lower composite cavity 10a form a first lower composite shear wall 1a, and the second lower prefabricated outer blade 11b, the second lower prefabricated inner blade 12b, and the second lower composite cavity 10b form a second lower composite shear wall 1b.

[0075] Further, please combine Figure 1 and Figure 5 The lower composite shear wall 1 further includes a first connecting rib 5, one end of which is embedded and fixed in the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a, and the other end of which extends into the second lower composite cavity 10b of the second lower composite shear wall 1b to form an overlap. The first connecting rib 5 serves as a structural rib connecting the connection node between the first lower composite shear wall 1a and the second lower composite shear wall 1b. It is in the form of a ring rib, forming a composite hidden column structure 6 (such as Figure 6 shown, or Figure 11 The number of the first connecting bars 5 is not limited and can be arranged in sequence along the wall height direction. They can also be combined with the structural reinforcement of the lower composite shear wall 1 (lap reinforcement 130) to form a steel cage structure (see Figure 5 or Figure 10 ), at this time the ring reinforcement becomes stirrups.

[0076] During factory prefabrication, the first lower prefabricated outer blade 11a and the first lower prefabricated inner blade 12a are connected by tension bars 14; the second lower prefabricated outer blade 11b and the second lower prefabricated inner blade 12b are also connected by tension bars 14. The first connecting bar 5 has one end embedded and fixed in the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a, and the other end extends into the second lower composite cavity of the second lower composite shear wall 1b, forming an overlap. To prevent structural position conflicts, tension bars 14 are omitted in the second lower composite shear wall 1b at the location corresponding to the first connecting bar 5, facilitating the insertion of the first connecting bar 5 into the second lower composite cavity 10b of the second lower composite shear wall 1b.

[0077] Furthermore, taking the corner wall as an example, in the section where the tie bars 14 are omitted, first tie assemblies 15 are installed to prevent mold expansion. During the prefabrication stage, tie holes can be reserved at the required locations. Furthermore, several density testing holes can be opened along the height of the first and second lower composite walls to test the density of the cast in the composite cavity later.

[0078] As a preferred embodiment of this first embodiment, the precast portions of the first and second lower composite walls are cast using a steel mesh mold. Taking the casting of the first lower composite wall as an example, the first lower precast outer blade 11a is cast on the casting mold platform. The structural reinforcement of the first lower precast outer blade 11a is arranged, and then the tie bars 14 are arranged. The steel mesh mold is then laid directly on the tie bars 14, and the first lower precast inner blade 12a is cast. This allows the casting of the inner and outer blades to be completed without flipping the structure.

[0079] As a preferred embodiment in the prefabrication stage, when the tie bars 14 are installed, they are generally tied to the steel mesh, so their position has a certain relative relationship with the steel mesh, and the first connecting bar 5, whether embedded and fixed in the first lower prefabricated outer blade 11a or the first lower prefabricated inner blade 12a, or fixed (tied or welded) on the tie bars 14; its position can accurately achieve horizontal overlap with the steel bars in the second lower composite shear wall 1b.

[0080] S2 installs the lower composite shear wall 1.

[0081] Specifically, a prefabricated portion formed by the lower prefabricated outer blade plate 11 and the lower prefabricated inner blade plate 12 is installed. The prefabricated portion is formed into an L-shape, a T-shape, or a straight shape.

[0082] The first connecting reinforcement 5 of the first lower composite wall is inserted into the second lower composite cavity 10b of the second lower composite shear wall 1b, and can be combined with the structural reinforcement (lap reinforcement 130) of the lower composite shear wall to form a steel cage structure.

[0083] When the lower composite shear wall 1 is a corner wall, at least one group of first tensioning components 15 is tensioned against the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a and the second lower prefabricated outer blade 11b of the second lower composite shear wall 1b; and / or at least one group of first tensioning components 15 is tensioned against the second lower prefabricated inner blade 12b of the second lower composite shear wall 1b and the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a; the first tensioning components 15 pass through the corner of the corner wall. Preferably, multiple groups of first tensioning components 15 are tensioned on the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a and the second lower prefabricated outer blade 11b of the second lower composite shear wall 1b, and multiple groups of first tensioning components 15 are arranged in sequence along the wall height direction; similarly, when the first tensioning components 15 are tensioned on the second lower prefabricated inner blade 12b of the second lower composite shear wall 1b and the first lower prefabricated outer blade 11a of the first lower composite shear wall 1a, the settings shall refer to this.

[0084] See also Figure 5Because the first lower composite shear wall 1a and the second lower composite shear wall 1b are connected by first connecting bars 5, the inner and outer plate tension bars 14 are not installed at the first connecting bars 5 to prevent structural position conflicts. Furthermore, to prevent mold expansion, at least one set of first tensioning assemblies 15 is positioned near the corners of the second lower precast outer plate 11b and the second lower precast inner plate 12b of the second lower composite shear wall 1b; these first tensioning assemblies 15 are offset from the first connecting bars 5. Preferably, multiple sets of first tensioning assemblies 15 are spaced and arranged sequentially along the wall height.

[0085] As another preferred implementation of this embodiment, please refer to Figures 7 to 11 Combined with 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 with a T-shaped structure. One end of the first connecting rib 5 is embedded and fixed in the first lower prefabricated outer blade 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 a overlap. Due to the first connecting rib 5 provided in the first lower composite shear wall 1a and the second lower composite shear wall 1b, in order to prevent structural position conflicts, the tensioning ribs 14 of the inner and outer blades are not provided at the first connecting rib 5. For further information, please refer to Figure 10 To prevent mold expansion, the lower composite shear wall 1 also includes second tensioning assemblies 16. At least one set of second tensioning assemblies 16 is positioned to tension the second lower precast outer blade 11b and second lower precast inner blade 12b of the second lower composite shear wall 1b, near the wing wall connection node. The second tensioning assemblies 16 are offset from the first connecting rib 5. Preferably, multiple sets of second tensioning assemblies 16 are spaced and arranged sequentially along the height of the wall.

[0086] As a preferred implementation of this embodiment, please refer to Figure 12 and Figure 13 Combined with Figure 1The lower composite shear wall 1 and the upper composite shear wall 3 are I-shaped walls, and the lower composite shear wall 1 is taken as an example for description. The lower composite shear wall 1 is an I-shaped wall (i.e., a strip wall), and the second lower composite shear wall 1b is horizontally 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 an I-shaped structure. At this time, one end of the first connecting bar 5 can be embedded and fixed in the first lower prefabricated outer blade 11a or the first lower prefabricated inner blade 12a of the first lower composite shear wall 1a, or fixed (tied or welded) on the tension bar 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. Furthermore, in order to prevent mold expansion, the lower composite shear wall 1 also includes a third tension component 17. At least one set of third tensioning assemblies 17 is positioned to tension the second lower precast outer blade 11b and the second lower precast inner blade 12b of the second lower composite shear wall 1b, near the wing wall connection node; the third tensioning assemblies 17 are offset from the first connecting rib 5. Preferably, multiple sets of third tensioning assemblies 17 are spaced and arranged sequentially along the height of the wall.

[0087] From the above, it can be seen that 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 can be a T-shaped winged wall, and the upper composite shear wall 3 can be an L-shaped corner wall or a straight wall; it only needs to meet the original purpose of forming a counter-lap joint between the reinforcement of the lower composite shear wall 1 and the structural reinforcement of the upper composite shear wall 3.

[0088] S3 pours and forms floor slab 2.

[0089] Specifically, the floor slab 2 is cast on the lower composite shear wall 1, and the structural reinforcements in the lower prefabricated outer blade 11 and / or the lower prefabricated inner blade 12 (collectively referred to as lower composite shear wall structural reinforcements 13) are maintained to extend upward through the floor slab 2.

[0090] For further information, see Figure 1 Floor slab 2 is a composite floor slab, comprising a precast base slab 21 and a cast-in-place composite layer 20. The precast base slab 21 is laid on the first lower precast inner blade 12a of the first lower composite shear wall 1a, or on the second lower precast inner blade 12b. The composite cavity of the lower composite shear wall 1 and the cast-in-place composite layer 20 of the floor slab 2 are then cast integrally. At this point, the lap reinforcement 130 of the lower composite wall should extend upward through the cast layer.

[0091] S4 installs the composite shear wall 3.

[0092] The structure of the upper composite shear wall 3 will not be described here in detail. Its structure is the same as that of the lower composite shear wall 1. 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. It only needs to meet the original purpose of forming a counter-lap joint between the reinforcement of the lower composite shear wall 1 and the structural reinforcement of the upper composite shear wall 3.

[0093] For details, please refer to Figure 11 Combined with Figure 11 , install the prefabricated part formed by the upper prefabricated outer blade plate 31 and the upper prefabricated inner blade plate 32, keep the structural reinforcement in the lower prefabricated outer blade plate 11 and / or the lower prefabricated inner blade plate 12 (collectively referred to as the lower composite shear wall structural reinforcement 13) extending into the upper composite cavity 30, and form a aligned overlap with the structural reinforcement in the upper prefabricated outer blade plate 31 and / or the upper prefabricated inner blade plate 32 (collectively referred to as the upper composite shear wall structural longitudinal reinforcement 33).

[0094] S5 pouring the upper superimposed cavity 30.

[0095] Specifically, if the upper floor slab 2 is laid, it is equivalent to the installation method of the floor slab 2 in S3, and after the installation is completed, it can be cast into shape.

[0096] Furthermore, the present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person 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 determined by the scope defined in the appended claims.

Claims

1. The fully assembled and binding-free composite shear wall system is characterized by: include: a lower composite shear wall, the lower composite shear wall comprising a lower prefabricated outer blade plate, a lower prefabricated inner blade plate, and a lower composite cavity, wherein the lower composite cavity is formed between the lower prefabricated outer blade plate and the lower prefabricated inner blade plate; An upper composite shear wall, the upper composite shear wall comprising an upper prefabricated outer blade plate, an upper prefabricated inner blade plate and an upper composite cavity, wherein the upper composite cavity is formed between the upper prefabricated outer blade plate and the upper prefabricated inner blade plate; At least the lower prefabricated outer blade and / or the lower prefabricated inner blade have internal structural reinforcement, and the structural reinforcement extends into the upper overlapping cavity, and the extended portion forms a counter-joint with the internal structural reinforcement of the upper prefabricated outer blade and / or the upper prefabricated inner blade.

2. The fully assembled, binding-free composite shear wall system according to claim 1, characterized in that: It also includes a floor slab, which is cast on the lower composite shear wall; the structural reinforcement in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate passes through the floor slab and extends into the upper composite cavity.

3. The fully assembled, binding-free composite shear wall system according to claim 1, characterized in that: 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 superimposed cavity includes a first lower superimposed cavity and a second lower superimposed cavity that are interconnected; the first lower prefabricated outer blade, the first lower prefabricated inner blade and the first lower superimposed cavity form a first lower superimposed shear wall, and the second lower prefabricated outer blade, the second lower prefabricated inner blade and the second lower superimposed cavity form a second lower superimposed shear wall.

4. The fully assembled, binding-free composite shear wall system according to claim 3 is characterized in that: The lower composite shear wall also includes a first connecting rib, one end of which is embedded and fixed in the first lower prefabricated outer blade 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 ribs in the second lower prefabricated outer blade and / or the second lower prefabricated inner blade.

5. The fully assembled, binding-free composite shear wall system according to claim 4 is characterized in that: The structural reinforcement bars of the first lower prefabricated outer blade plate and the first lower prefabricated inner blade plate of the first lower composite shear wall extend into the upper composite shear wall to form a lap joint; the structural reinforcement bars of the second lower prefabricated outer blade plate and the second lower prefabricated inner blade plate of the second lower composite shear wall extend into the upper composite shear wall to form a lap joint.

6. The fully assembled, binding-free composite shear wall system according to any one of claims 3 to 5, characterized in that: The lower composite shear wall and the upper composite shear wall are straight-line walls, corner walls or winged walls with corresponding shapes.

7. The fully assembled, binding-free composite shear wall system according to claim 6, characterized in that: The lower composite shear wall is a corner wall, and the lower composite shear wall further includes a first tension assembly; At least one group of the first tensioning components is tensioned on the first lower prefabricated inner blade plate of the first lower composite shear wall and the second lower prefabricated outer blade plate of the second lower composite shear wall; and / or at least one group of the first tensioning components is tensioned on the second lower prefabricated inner blade plate of the second lower composite shear wall and the first lower prefabricated outer blade plate of the first lower composite shear wall; The first tensioning assembly runs through the corner of the corner wall.

8. The fully assembled, binding-free composite shear wall system according to claim 7, characterized in that: At least one set of the first tensioning components is arranged to tension the second lower prefabricated outer blade plate and the second lower prefabricated inner blade plate of the second lower composite shear wall and is close to the corner; the first tensioning components are offset from the first connecting ribs.

9. The fully assembled, binding-free composite shear wall system according to 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 part of the first lower composite shear wall; the lower composite shear wall also includes a second tensioning assembly; at least one group of the second tensioning assemblies is tensioned on the second lower prefabricated outer blade plate and the second lower prefabricated inner blade plate of the second lower composite shear wall and is close to the winged wall connection node; the second tensioning assembly is offset from the first connecting rib.

10. The construction method of the composite shear wall system according to any one of claims 1 to 9, characterized in that: The following steps are involved: precast lower composite shear wall and precast parts of upper composite shear wall; Installing the lower composite shear wall, installing the prefabricated portion of the lower composite shear wall, and maintaining the structural reinforcement bars in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extending upward; Casting the floor slab, casting the floor slab on the lower composite shear wall, and keeping the structural reinforcement bars in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extending upward through the floor slab; Installing the upper composite shear wall, installing the prefabricated portion of the upper composite shear wall, keeping the structural reinforcement of the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extended in the upper composite cavity, and forming an aligned overlap with the structural reinforcement of the upper prefabricated outer blade plate and / or the upper prefabricated inner blade plate; Cast the upper superimposed cavity.

11. The construction method of the composite shear wall system according to claim 10, characterized in that: The structural reinforcements in the lower prefabricated outer blade plate and / or the lower prefabricated inner blade plate extend inwards to form a certain slope and then extend upwards.

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