Slidable flexible connection joint for top-hung precast concrete wall panels

Abstract

The application relates to a slidable flexible connecting joint of an upper-hung prefabricated concrete wallboard, which is applied to the connection between prefabricated wallboards or between a prefabricated wallboard and a main body structure. The slidable flexible connecting joint comprises a connecting steel bar mounting component, a first fastening assembly, a second fastening assembly, a first mounting part and a second mounting part. The first fastening assembly comprises a first connecting piece and a first locking piece connected to the first connecting piece. The first connecting piece is arranged in a sliding hole and fixed to the prefabricated wallboard. The first mounting part slides relative to the first connecting piece through the sliding hole. The first locking piece is fastened to the first connecting piece and abuts against the first mounting part. The second fastening assembly comprises a second connecting piece and a second locking piece connected to the second connecting piece. The second connecting piece is embedded in the main body structure or the prefabricated wallboard of the next layer. The second connecting piece can be arranged in a mounting hole. The second locking piece is fastened to the second connecting piece and abuts against the second mounting part.

Description

Technical Field

[0001] This application relates to the field of installation and connection of precast wall panels, and more particularly to a sliding flexible connection node for an upper-mounted precast concrete wall panel. Background Technology

[0002] Precast concrete wall panels are suitable for exterior wall engineering in prefabricated buildings. As a green component of prefabricated buildings, they simplify the construction process, allow for flexible installation, and effectively adapt to deformation of the main structure. In terms of connection methods, wall panels and the main structure are divided into two main categories: line connections and point connections. Line connections are achieved by casting and effectively anchoring rows of reinforcing bars, forming a rigid fixation. Point connections are mainly achieved by connecting at several specific points. Point connections are usually designed as flexible connections, and flexible point connection technology can be further subdivided into complex connections and simple connections.

[0003] However, while complex connections can adapt to seismic deformation, they are cumbersome to construct, their performance is unstable, and they may even fail. Simple connections (such as grouting sleeve bolts) are easy to construct, but they lose the original purpose of flexible connections and cannot adapt to the horizontal deformation of the main structure. When facing an earthquake, they may aggravate the stress on the structure, causing unpredictable damage or even destruction to the main structure under seismic action. Summary of the Invention

[0004] This application discloses a sliding flexible connection node. When connecting precast wall panels to the main structure, the sliding flexible connection node and connecting steel bars are combined to effectively cope with earthquake deformation and ensure the safety of the building under extreme conditions such as earthquakes.

[0005] To achieve the above objectives, this application discloses a slidable flexible connection node. This slidable flexible connection node is applied to a building, which includes multiple layers of modular walls arranged along the height direction. Each layer of modular walls includes a main structure and precast wall panels. The slidable flexible connection node includes: an installation component comprising a first installation part and a second installation part perpendicular to each other; the first installation part abutting against a precast wall panel, and the second installation part abutting against the main structure, or the second installation part abutting against a precast wall panel or the main structure of the next layer; a sliding hole disposed in the first installation part; an installation hole disposed in the second installation part; and a first fastening assembly comprising a first connector and a first locking member movably connected to the first connector. The first connector passes through the sliding hole and is fixed to the precast wall panel. The first installation part slides relative to the first connector through the sliding hole, and the first locking member is fastened to the first connector. The second fastening assembly includes a second connector and a second locking member movably connected to the second connector. The second connector is embedded in the main structure or the precast wall panel of the next layer. The second connector can pass through the mounting hole. The second locking member is fastened to the second connector and abuts against the second mounting part. A sliding plate assembly is provided between the first locking member and the mounting member, and between the second locking member and the mounting member. The sliding plate assembly further includes a first sliding plate and a second sliding plate. The first sliding plate is disposed between the mounting member and the first locking member, and abuts against the first mounting part. Alternatively, the first sliding plate is disposed between the second locking member and the mounting member. The second sliding plate is disposed between the first sliding plate and the first locking member, and abuts against the first locking member.

[0006] In some embodiments, the slidable flexible connection node further includes: an insert, the insert including a hollow cavity insert embedded in the precast wall panel, the extension direction of the insert being perpendicular to the extension direction of the sliding hole; the first fastening assembly further includes a third locking member, the third locking member being located in the hollow cavity of the insert, the first connector passing through the precast wall panel and the sliding hole, and being fastened to the third locking member to connect the insert to the first mounting portion.

[0007] In some embodiments, the mounting hole is an oblong hole, and the second mounting part can slide relative to the second connector through the mounting hole.

[0008] In some embodiments, the first mounting part abuts against the precast wall panel, the first connector is disposed on the side of the precast wall panel, the sliding hole extends vertically in the in-plane of the precast wall panel, and the insert extends horizontally in the in-plane of the precast wall panel; the second mounting part abuts against the main structure, and the second connector is embedded in the side of the main structure.

[0009] In some embodiments, the first mounting part abuts against the precast wall panel, the first connector is disposed at the bottom of the precast wall panel, the sliding hole extends horizontally along the surface of the precast wall panel, and the insert extends vertically along the surface of the precast wall panel; the second mounting part abuts against the top of the precast wall panel of the next layer or the top of the main structure, and the second connector is embedded in the precast wall panel or the main structure of the next layer.

[0010] In some embodiments, when the side of the precast wall panel is open or the slidable flexible connection node at the bottom of the precast wall panel meets the preset conditions, the side of the precast wall panel is not provided with a slidable flexible connection node; or when the side of the precast wall panel is a precast wall column, the side of the precast wall panel is not provided with a slidable flexible connection node, and the side of the precast wall panel is connected to the main structure through a grouting sleeve.

[0011] In some embodiments, the connection between the precast wall panel and the main structure may be provided with connecting steel bars, which are located at the top of the precast wall panel of each layer of spliced ​​wall and connected to the main structure.

[0012] In some embodiments, the length of the sliding hole is related to the diameter of the first connector, the amount of interlayer deformation or harmful interlayer deformation of the precast wall panel, and the construction and installation deviation of the precast wall panel in the horizontal direction along the surface; or the width of the sliding hole is positively correlated with the diameter of the first connector; or the length of the mounting hole is related to the diameter of the second connector and the construction and installation deviation of the precast wall panel in the outward direction along the surface; or the width of the mounting hole is related to the diameter of the second connector and the construction and installation deviation of the precast wall panel in the horizontal direction along the surface.

[0013] In some embodiments, the length L1 of the sliding hole satisfies: L1≥D1+λ×Δ+2e1; or the width B1 of the sliding hole satisfies: B1≥D1+2; or the length L2 of the mounting hole satisfies: L2≥D2+2e2; or the length B2 of the mounting hole satisfies: B2≥D2+e1; where D1 is the diameter of the first connector, Δ is the size of the interlayer deformation or harmful interlayer deformation of the precast wall panel, λ is the magnification factor, e1 is the construction and installation deviation of the precast wall panel in the horizontal direction along the surface, D2 is the diameter of the second connector, and e2 is the construction and installation deviation of the precast wall panel in the outward direction along the surface of the precast wall panel.

[0014] In some embodiments, the length of the insert is related to the in-plane vertical construction deviation of the precast wall panel relative to the outer diameter of the third locking member; or the width of the insert is related to the outer diameter of the third locking member and the reserved gap between the third locking member and the insert; or the depth of the insert is related to the thickness of the third locking member and the reserved gap between the third locking member and the insert.

[0015] In some embodiments, the length l1 of the insert satisfies: l1≥c1+2e3+20; or the width b1 of the insert satisfies: b1≥c1+2i; or the depth b2 of the insert satisfies b2≥c2+i; where c1 is the outer diameter of the third locking member, i is the size of the reserved gap between the third locking member and the insert, e3 is the vertical construction deviation of the precast wall panel, and c2 is the thickness of the third locking member.

[0016] Compared with the prior art, the beneficial effects of this application are: The sliding flexible connection node provided in this application has construction flexibility and simple and reliable structural characteristics. Through the sliding connection node, the impact of lateral stiffness generated when the precast wall panel is connected to the main structure is effectively reduced, thereby ensuring that the overall structure can maintain stability and safety when facing external forces such as wind loads and earthquakes. It achieves coordinated deformation between the precast wall panel and the main structure, avoids stress concentration caused by construction errors, and further improves the overall performance and durability of the building structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram illustrating the connection between the prefabricated wall panel and the main structure, provided in an embodiment of this application. Figure 2 This is a structural schematic diagram of a prefabricated wall panel connecting to a lower layer of prefabricated wall panel, provided in an embodiment of this application. Figure 3 This is a structural schematic diagram of the prefabricated wall panel connection main structure provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the sliding flexible connection node provided in the embodiments of this application; Figure 5 A schematic diagram of the structure of a prefabricated wall panel without slidable flexible connection nodes on its side, as provided in an embodiment of this application. Figure 6 for Figure 4 A cross-sectional view of the sliding flexible connection node along the AA direction; Figure 7 for Figure 4 A cross-sectional view of the sliding flexible connection node along the BB direction; Figure 8 A schematic diagram of the slidable flexible connection node provided in this application embodiment connecting the main structure to the side of the precast wall panel; Figure 9 for Figure 8 A cross-sectional view of the sliding flexible connection node along the CC direction; Figure 10 for Figure 8 A cross-sectional view of the sliding flexible connection node along the DD direction.

[0019] Explanation of reference numerals in the attached figures: 01-Main structure; 02-Precast wall panel; 10-Sliding flexible connection node; 101-Installation component; 1011-First mounting part; 1011a-Sliding hole; 1012-Second mounting part; 1012a-Mounting hole; 102-First fastening assembly; 1021-First connector; 1022-First locking element; 1023-Third locking element; 103-Second fastening assembly; 1031-Second connector; 1032-Second locking element; 104-Sliding plate assembly; 1041-First sliding plate; 1042-Second sliding plate; 105-Embedded part; 201-Installation groove; 202-Sealing element; 203-Cover plate; 204-Connecting reinforcing bar. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In this application, the terms "upper," "lower," "top," "bottom," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0025] In the field of building construction, precast concrete wall panels are suitable for exterior wall engineering in prefabricated buildings. As a green component of prefabricated buildings, precast concrete wall panels offer advantages such as ease of construction, flexibility in installation, and adaptability to deformation of the main structure. Regarding connection methods, the connection between precast wall panels and the main structure can be divided into two categories: line connection and point connection.

[0026] Line connections involve casting and anchoring rows of reinforcing steel bars in place, ensuring the stability and reliability of the building. Point connections, on the other hand, achieve flexible connections by connecting at several points, enabling precast wall panels to better absorb energy and disperse stress under external forces such as earthquakes, thereby protecting the main structure from damage. Point connection technology can be further divided into two categories: complex connections and simple connections.

[0027] However, while complex connections possess seismic resistance potential, their intricate construction and processes often prevent them from achieving the desired results, and improper construction can even lead to connection failure. Simple connections, such as grouted sleeve bolts, simplify the construction process but sacrifice the advantages of flexible connections to some extent. This makes it difficult for wall panels to effectively absorb horizontal deformation during extreme events like earthquakes, potentially exacerbating the stress on the building and threatening its overall safety.

[0028] To address the aforementioned problems, the inventors investigated the limitations of existing precast wall panel connection methods and improved existing precast wall panel connection nodes, designing a precast wall panel connection method that can slide in both the vertical and horizontal directions. Based on this, this application discloses a sliding flexible connection node that can solve the problem of poor adaptive deformation capability in traditional precast wall panel connections.

[0029] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0030] Please see Figures 1 to 5 , Figure 1 This is a schematic diagram of the connection between the prefabricated wall panel 02 and the main structure 01 provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure connecting the precast wall panel 02 to the lower precast wall panel 02 provided in the embodiments of this application. Figure 3 This is a structural diagram of the prefabricated wall panel 02 connecting to the main structure 01 provided in the embodiments of this application. Figure 4 This is a schematic diagram of the structure of the sliding flexible connection node 10 provided in an embodiment of this application. Figure 5 This is a structural schematic diagram of the prefabricated wall panel 02 without a slidable flexible connection node 10 on its side, as provided in this embodiment of the application. This embodiment discloses a slidable flexible connection node 10, which is applied to a building. The building includes multiple layers of interlocking walls arranged along the height direction. Each layer of interlocking walls includes a main structure 01 and a prefabricated wall panel 02. The slidable flexible connection node 10 includes an installation component 101, comprising a first installation part 1011 and a second installation part 1012 that are perpendicular to each other. The first installation part 1011 is used to abut against the prefabricated wall panel 02. The second mounting part 1012 is used to abut against the main structure 01 or the second mounting part is used for the prefabricated wall panel 02 of the next layer or the main structure 01; a sliding hole 1011a is provided in the first mounting part 1011; a mounting hole 1012a is provided in the second mounting part 1012; a first fastening assembly 102 includes a first connector 1021 and a first locking member 1022 movably connected to the first connector 1021. The first connector 1021 passes through the sliding hole 1011a and is fixed to the prefabricated wall panel 02. The first mounting part 1011 slides relative to the first connector 1021 through the sliding hole 1011a, and the first locking member 1022 is fastened to the first connector 1021. The connector 1021 abuts against the sliding plate assembly 104; the second fastening assembly 103 includes a second connector 1031 and a second locking member 1032 movably connected to the second connector 1031. The second connector 1031 is embedded in the main structure 01 or the precast wall panel 02 of the next layer. The second connector 1031 can pass through the mounting hole 1012a. The second locking member 1032 is fastened to the second connector 1031 and abuts against the second mounting part 1012; the sliding plate assembly 104 is provided between the first locking member 1022 and the mounting member 101, and between the second locking member 1032 and the mounting member 101.

[0031] The sliding flexible connection node is used to connect the precast wall panel 02 to the main structure 01 or the next layer of precast wall panel 02. The precast wall panel 02 is standardized in the factory, which facilitates its installation on the main structure 01, reduces the workload during on-site construction, and shortens the construction cycle of the building. The bottom of the precast wall panel 02 is provided with a removable pad, which can be removed after the pouring is completed. The sides and bottom of the precast wall panel 02 are reserved with installation grooves 201 to accommodate the sliding flexible connection node 10.

[0032] When the slidable flexible connection node 10 is installed on the side of the precast wall panel 02, in any floor of the building, a portion of the slidable flexible connection node 10 is slidably connected to the side of the precast wall panel 02, and the other portion is slidably connected to the side of the main structure 01. The precast wall panel 02 is connected to the main structure 01 on the side of the precast wall panel 02, and the main structure 01 on the side can be a main structural column or a main structural wall panel, etc. When the side of the precast wall panel 02 is exposed or the bottom edge of the precast wall panel 02 is connected to meet the stress and deformation requirements, the side can be replaced by a grouting sleeve or other structure instead of the slidable flexible connection node 10.

[0033] The sliding flexible connection node 10 allows the precast wall panel 02 to slide vertically relative to the main structure 01 within its plane, accommodating installation errors that may occur during the installation of the precast wall panel 02. Furthermore, under extreme dynamic loads such as earthquakes, the sliding flexible connection node 10 allows for vertical relative sliding between the precast wall panel 02 and the main structure 01 within its plane, thereby mitigating the overall seismic response of the building and protecting its safety. The application of the sliding flexible connection node 10 between the precast wall panel 02 and the main structure 01 enhances the flexibility and precision of construction and installation, and further improves structural safety and seismic performance.

[0034] The fine-tuning function of the sliding flexible connection node 10 along the out-of-plane direction of the precast wall panel 02 mainly depends on the sequence of construction processes. If the sliding flexible connection node 10 at the bottom of the precast wall panel 02 is fixed first, and the precast wall panel 02 is fine-tuned along the out-of-plane direction through the sliding flexible connection node 10, the fine-tuning of the side sliding flexible connection node 10 relative to the main structure 01 can be eliminated, and a fixed connection can be adopted. If the side sliding flexible connection node 10 is installed first, the fine-tuning function of the sliding flexible connection node can be retained, allowing the sliding flexible connection node 10 to slide and connect with the main structure 01 to accommodate the installation error of the precast wall panel 02.

[0035] When the slidable flexible connection node 10 is installed at the bottom of the precast wall panel 02, the installation position of the precast wall panel 02 corresponds to different installation forms of the slidable flexible connection node 10 at the bottom of the precast wall panel 02: When the precast wall panel 02 needs to be installed in the middle layer of the building, the first installation form of the sliding flexible connection node 10 at the bottom of the precast wall panel 02 is: the precast wall panel 02 is installed outside the main structure 01, the sliding flexible connection node 10 is set at the bottom of the precast wall panel 02, and the sliding flexible connection node 10 is connected to the precast wall panel 02 of the next layer.

[0036] When the precast wall panel 02 needs to be installed in the middle layer of the building, the second installation form of the sliding flexible connection node 10 at the bottom of the precast wall panel 02 is: the precast wall panel 02 is installed below the main structure 01, and the sliding flexible connection node 10 at the bottom of the precast wall panel 02 is connected to the main structure 01.

[0037] When the precast wall panel 02 needs to be installed on the ground floor of the building, it is installed below the main structure 01, and the slidable flexible connection node 10 at the bottom of the precast wall panel 02 is connected to the main structure 01. In the intermediate or top floors of the building, a portion of the slidable flexible connection node 10 is slidably connected to the bottom of the precast wall panel 02, and the other portion is connected to the precast wall panel 02 or the main structure 01 of the next floor. In the ground floor of the building, the other portion of the slidable flexible connection node 10 is connected to the main structure 01 of this floor, where the main structure 01 can be the foundation slab of the ground floor.

[0038] When the slidable flexible connection node 10 is installed at the bottom of the precast wall panel 02, the sliding connection between the slidable flexible connection node 10 and the main structure 01 or the precast wall panel 02 of the next floor allows the precast wall panel 02 to be finely adjusted in position relative to the main structure 01 or the precast wall panel 02 of the next floor in the horizontal direction within the plane, in order to accommodate the installation errors generated during the installation of the precast wall panel 02. Moreover, under extreme dynamic loads such as earthquakes, the slidable flexible connection node 10 can allow relative sliding in the horizontal direction within the plane between the precast wall panel 02 and the precast wall panel 02 of the next floor or between the precast wall panel 02 and the main structure 01, thereby reducing the overall seismic response of the building and protecting the building safety.

[0039] When installing precast wall panels 02, a crane or specialized hoisting equipment is first used to lift the precast wall panels 02 to the installation position for joint treatment. Sealing elements 202 are installed at the joints between the precast wall panels 02 and the next layer of precast wall panels 02, or at the joints between the precast wall and the main structure 01. The sealing elements 202 can be sealant, foamed polyethylene rods, or other sealing materials that achieve a sealing effect; this embodiment does not limit the specific type. The sealing elements 202 achieve the purpose of waterproofing and moisture-proofing the building walls, preventing external moisture from penetrating the joints between the precast wall and the next layer of precast walls, or at the joints between the precast wall and the main structure 01, protecting the building wall structure from moisture erosion. The sealing elements 202 can also fill joint gaps, enhancing the overall sealing and sound insulation of the building walls.

[0040] After the overall installation process is completed, a cover plate 203 can be added to the mounting groove 201 of the prefabricated wall panel 02 for installing the sliding flexible connection node 10. The cover plate 203 can be set according to the size and shape of the mounting groove 201. The cover plate 203 should have a certain strength and rigidity to withstand possible external forces. The cover plate 203 can be fixed to the mounting groove 201 for installing the sliding flexible connection node 10 using special glue, screws or other fasteners. The cover plate 203 protects the sliding flexible connection node 10 in the mounting groove 201 from external damage and prevents external forces from affecting the overall performance of the sliding flexible connection node 10. The installation of the cover plate 203 improves the overall safety of the prefabricated wall panel 02 installation.

[0041] Please see Figure 6 , Figure 6 for Figure 4A cross-sectional view of the slidable flexible connection node 10 along the AA direction. In some embodiments, each slidable flexible connection node 10 includes: a mounting member 101, including a first mounting portion 1011 and a second mounting portion 1012 perpendicular to each other, the first mounting portion 1011 abutting against the precast wall panel 02, and the second mounting portion 1012 abutting against the main structure 01, or the second mounting portion abutting against the precast wall panel 02 or the main structure 01 of the next layer; a sliding hole 1011a disposed in the first mounting portion 1011; a mounting hole 1012a disposed in the second mounting portion 1012; and a first fastening assembly 102, including a first connector 1021 and a first locking member 1022 connected to the first connector 1021. 21 is inserted through the sliding hole 1011a and fixed to the precast wall panel 02. The first mounting part 1011 slides relative to the first connector 1021 through the sliding hole 1011a. The first locking member 1022 is fastened to the first connector 1021 and abuts against the first mounting part 1011. The second fastening assembly 103 includes a second connector 1031 and a second locking member 1032 connected to the second connector 1031. The second connector 1031 is embedded in the main structure 01 or the precast wall panel 02 of the next layer. The second connector 1031 can be inserted through the mounting hole 1012a. The second locking member 1032 is fastened to the second connector 1031 and abuts against the second mounting part 1012.

[0042] The slidable flexible connection node 10 includes a mounting member 101, which has a first mounting portion 1011 and a second mounting portion 1012 that are perpendicular to each other. The specifications of the mounting member 101 can be determined by a combination of the dimensions of the first fastener, the second fastener, the sliding hole 1011a, and the mounting hole 1012a. The mounting member 101 can be a structure with two mutually perpendicular mounting portions, such as angle steel or channel steel; this embodiment does not limit this.

[0043] The first mounting part 1011 abuts against the precast wall panel 02. When the precast wall panel 02 needs to be installed on an intermediate floor of the building, the second mounting part 1012 abuts against the main structure 01 or the precast wall panel 02 on the next floor. When the precast wall panel 02 needs to be installed on the ground floor of the building, the second mounting part 1012 abuts against the main structure 01. This makes the precast wall panel 02 and the main structure 01 or the precast wall panel 02 on the next floor perpendicular to each other and connected together by the mounting member 101, realizing the slidable installation of the precast wall panel 02.

[0044] A sliding hole 1011a is provided in the first mounting part 1011. The sliding hole 1011a can be an elongated hole, and the sliding hole 1011a can be adjusted according to the specific implementation. This embodiment does not limit this. The extension of the sliding hole 1011a provides space for the sliding between the precast wall panel 02 and the main structure 01 or the precast wall panel 02 of the next layer. This ensures that there is a certain deformation space between the precast wall panel 02 and the main structure 01 in the event of an earthquake or other situation, preventing damage to the precast wall panel 02 and the main structure 01 caused by rigid connection.

[0045] The mounting hole 1012a can be constructed as a round hole or an oblong hole. The mounting hole 1012a is provided in the second mounting part 1012, and the number of mounting holes 1012a can be set according to the specific installation situation of the prefabricated wall panel 02; this embodiment does not limit this. Setting the mounting hole 1012a as an oblong hole provides space for sliding between the prefabricated wall panel 02 and the main structure 01 or the next layer of prefabricated wall panel 02 in the vertical direction relative to the sliding hole 1011a. Setting the mounting hole 1012a as an oblong hole provides a certain installation movement position during the installation of the prefabricated wall panel 02, facilitating adjustment of the position of the prefabricated wall panel 02 during installation, and achieving more precise and simpler installation.

[0046] During the installation of precast wall panel 02, if the slidable flexible connection node 10 at the bottom of the precast wall panel 02 is installed first, and the mounting hole 1012a of the slidable flexible connection node 10 at the bottom of the precast wall panel 02 is set as an elongated hole for installation adjustment of the precast wall panel 02 along the out-of-plane direction of the precast wall panel 02, and then the slidable flexible connection node 10 on the side of the precast wall panel 02 is installed, then the connection between the slidable flexible connection node 10 on the side of the precast wall panel 02 and the main structure 01 can be replaced by a pre-embedded anchor bar instead of the pre-embedded second connector 1031, and the mounting hole 1012a of the slidable flexible connection node 10 on the side of the precast wall panel 02 can be set as a round hole.

[0047] The first fastening assembly 102 includes a first connector 1021 and a first locking member 1022 sleeved on the outside of the first connector 1021. The first connector 1021 and the first locking member 1022 are locked together by threads. The first connector 1021 passes through the sliding hole 1011a and fixes the precast wall panel 02. The number of first fastening assemblies 102 corresponds to the number of sliding holes 1011a. The first locking member 1022 is fastened to the first connector 1021 and abuts against the first mounting part 1011. The fastening cooperation between the first locking member 1022 and the first connector 1021 can slide and fix the first mounting part 1011 on the precast wall panel 02, preventing the mounting component 101 from falling off the precast wall panel 02.

[0048] The second fastening assembly 103 includes a second connector 1031 and a second locking member 1032 sleeved on the outside of the second connector 1031. The second connector 1031 and the second locking member 1032 are locked together by threads. There may be two second connectors 1031 and two locking members 1032, and the number of mounting holes 1012a corresponds to the number of second connectors 1031.

[0049] The second connector 1031 is embedded in the main structure 01 or the precast wall panel 02 of the next layer, forming a more stable connection between the second connector 1031 and the precast wall panel 02 or the main structure 01. The second connector 1031 passes through the mounting hole 1012a, and the second locking member 1032 is fastened to the second connector 1031 and abuts against the second mounting part 1012. The fastening fit between the second locking member 1032 and the second connector 1031 can fix the second mounting part 1012 to the main structure 01 or the precast wall panel 02 of the next layer, preventing the mounting parts from shaking or falling off under external force.

[0050] Please see Figure 7 , Figure 7 for Figure 4 A cross-sectional view of the slidable flexible connection node 10 along the BB direction. In some embodiments, the slidable flexible connection node 10 further includes a sliding plate assembly 104, which is provided between the first locking member 1022 and the mounting member 101, and between the second locking member 1032 and the mounting member 101.

[0051] A sliding plate assembly 104 is disposed between the first locking member 1022, the second locking member 1032, and the mounting member 101 to distribute the pressure exerted on the mounting member 101 when the first locking member 1022 or the second locking member 1032 is tightened. When the first locking member 1022 or the second locking member 1032 is tightened, a downward force is applied to the mounting member 101. Without the sliding plate assembly 104, this force may concentrate on the contact surface between the first locking member 1022 or the second locking member 1032 and the mounting member 101, leading to stress concentration and potential damage. The presence of the sliding plate assembly 104 disperses the force exerted by the first locking member 1022 or the second locking member 1032 over a larger area, thereby reducing stress concentration.

[0052] When the sliding plate assembly 104 slides in the corresponding sliding hole 1011a or mounting hole 1012a, it can buffer the first locking member 1022 or the second locking member 1032, so that there will be no excessive friction between the first locking member 1022 or the second locking member 1032 and the mounting member 101, which would prevent the precast wall panel 02 from sliding relative to the main structure 01.

[0053] Optionally, the sliding plate assembly 104 may include components that can achieve a buffering effect, such as a polytetrafluoroethylene plate or a rubber sliding plate assembly 104. This embodiment does not limit this.

[0054] Optionally, the thickness of the sliding plate assembly 104 can generally be 1.5~3.0mm, which can be selected according to the construction site and the specific conditions of the precast wall panel 02.

[0055] In some embodiments, the sliding plate assembly 104 further includes: a first sliding plate 1041 disposed between the mounting member 101 and the first locking member 1022, the first sliding plate 1041 abutting against the first mounting portion 1011, and / or the first sliding plate 1041 disposed between the second locking member 1032 and the mounting member 101; and a second sliding plate 1042 disposed between the first sliding plate 1041 and the first locking member 1022, the second sliding plate 1042 abutting against the first locking member 1022.

[0056] When the precast wall panel 02 deforms, the first sliding plate 1041 and the second sliding plate 1042 allow relative displacement between the first mounting part 1011 and the mounting member 101, thereby achieving the effect of sliding connection.

[0057] Thus, the sliding flexible connection node provided in this application embodiment has construction flexibility and simple and reliable structural characteristics. Through the sliding flexible connection node, the impact of lateral stiffness generated when the precast wall panel 02 is connected to the main structure 01 is effectively reduced, thereby ensuring that the overall structure can maintain stability and safety when facing external forces such as wind loads and earthquakes. This achieves coordinated deformation between the precast wall panel 02 and the main structure 01, avoids stress concentration caused by construction errors, and further improves the overall performance and durability of the building structure.

[0058] like Figure 6 As shown, in some embodiments, the slidable flexible connection node 10 further includes: an insert 105, the insert 105 including a hollow cavity, the insert 105 being embedded in the prefabricated wall panel 02, the extension direction of the insert 105 being perpendicular to the extension direction of the sliding hole 1011a; the first fastening assembly 102 further includes a third locking member 1023, the third locking member 1023 being located in the hollow cavity of the insert 105, the first connecting member 1021 passing through the prefabricated wall panel 02 and one end of the sliding hole 1011a, and being fastened to the third locking member 1023 to connect the insert 105 to the first mounting part 1011.

[0059] The insert 105 is embedded inside the precast wall panel 02. The extending direction of the insert 105 is perpendicular to the extending direction of the sliding hole 1011a, allowing the first fastening assembly 102 to slide within the insert 105 along its extending direction, thus providing more flexible adjustment space. Optionally, anchor bars can be provided on the outside of the slide rail, and these anchor bars are also embedded inside the precast wall panel 02, thereby improving the connection strength between the insert 105 and the precast wall panel 02.

[0060] The first fastening assembly 102 also includes a third locking member 1023, which is housed inside the insert 105. The first connector 1021 passes through a sliding hole 1011a on the precast wall panel 02 and connects to the third locking member 1023 located in the insert 105. The third locking member 1023 provides a fastening force, and the combination of the insert 105 and the third locking member 1023 makes the sliding flexible connection node more stable, ensuring that the connection between the first connector 1021 and the insert 105 can withstand greater external forces.

[0061] The first connector 1021 can drive the third locking member 1023 to slide within the insert 105 along the extension direction of the insert 105, thereby allowing a certain degree of relative movement between the precast wall panel 02 and the main structure 01 or the precast wall panel 02 of the next floor, so as to absorb the structural deformation caused by external forces or allow slight displacement. In the event of natural disasters such as earthquakes, the damage of vibration to the overall structure of the building can be reduced.

[0062] In some embodiments, the mounting hole 1012a is an elongated hole, and the second mounting part 1012 can slide relative to the second connector 1031 through the mounting hole 1012a.

[0063] The mounting hole 1012a can be constructed as an elongated oval hole. The mounting hole 1012a is located in the second mounting portion 1012, and its extension direction is perpendicular to the extension direction of the sliding hole 1011a. The mounting hole 1012a provides space for sliding between the precast wall panel 02 and the main structure 01 or the precast wall panel 02 of the next layer, perpendicular to the sliding hole 1011a. The mounting hole 1012a can provide a certain installation movement position during the installation of the precast wall panel 02, facilitating adjustment of the precast wall panel 02's position during installation and achieving more precise and easier installation.

[0064] Please see Figure 8 , Figure 9 and Figure 10 , Figure 8 This is a schematic diagram of the sliding flexible connection node 10 connected to the main body structure 01 on the side, as provided in an embodiment of this application. Figure 9 for Figure 8 A cross-sectional view of the sliding flexible connection node 10 along the CC direction. Figure 10 for Figure 8 A cross-sectional view of the slidable flexible connection node 10 along the DD direction. In some embodiments, the first mounting part 1011 abuts against the precast wall panel 02, the first connector 1021 is disposed on the side of the precast wall panel 02, the sliding hole 1011a extends vertically in the in-plane of the precast wall panel 02, and the insert 105 extends horizontally in the in-plane of the precast wall panel 02; the second mounting part 1012 abuts against the main structure 01, the second connector 1031 is embedded in the side of the main structure 01, and the mounting hole 1012a extends out-of-plane of the precast wall panel 02.

[0065] In any floor of the building, when the slidable flexible connection node 10 is installed on the side of the precast wall panel 02, the first connector 1021 is disposed on the side of the precast wall panel 02, the sliding hole 1011a extends vertically in-plane along the precast wall panel, and the extension direction of the insert 105 is perpendicular to the extension direction of the sliding hole 1011a, and the insert 105 extends horizontally in-plane along the precast wall panel 02. The sliding hole 1011a installed on the slidable flexible connection node 10 on the side of the precast wall panel 02 allows vertical sliding between the precast wall panel 02 and the main structure 01. The horizontal extension of the insert 105 in-plane allows horizontal sliding between the precast wall panel 02 and the main structure 01. This allows for better adaptive deformation to cope with damage to the building caused by earthquakes and other events.

[0066] The second mounting part 1012 abuts against the side of the main structure 01, and the second connector 1031 is embedded in the main structure 01. The mounting hole 1012a is set as an elongated hole and extends in the outward direction of the precast wall panel 02 to allow the precast wall panel 02 and the main structure 01 to slide in the outward direction of the precast wall panel 02, so as to achieve the purpose of adjustable inner and outer installation positions when installing the precast wall panel 02.

[0067] Please see the return Figure 4 and Figure 7 In some embodiments, the first mounting part 1011 abuts against the insert 105, the first connecting member 1021 is disposed at the bottom of the precast wall panel 02, the sliding hole 1011a extends horizontally in the in-plane direction of the precast wall panel 02, and the insert 105 extends vertically in the in-plane direction of the precast wall panel 02; the second mounting part 1012 abuts against the top of the precast wall panel 02 of the next layer or the top of the main structure 01, the second connecting member 1031 is embedded in the precast wall panel 02 of the next layer or the main structure 01, and the mounting hole 1012a extends out-of-plane direction of the precast wall panel 02.

[0068] When the slidable flexible connection node 10 is installed on the bottom of the precast wall panel 02 via the insert 105, the first connector 1021 is disposed on the bottom of the precast wall panel 02, the sliding hole 1011a extends horizontally in the in-plane direction of the precast wall panel 02, and the extension direction of the insert 105 is perpendicular to the extension direction of the sliding hole 1011a, and the insert 105 extends vertically in the in-plane direction of the precast wall panel 02. The sliding hole 1011a installed on the slidable flexible connection node 10 at the bottom of the precast wall panel 02 allows for horizontal sliding between the precast wall panel 02 and the main structure 01. The vertical extension of the insert 105 in the in-plane allows for vertical sliding between the precast wall panel 02 and the main structure 01. This allows for better adaptive deformation to cope with situations such as earthquakes that could affect the building.

[0069] When the precast wall panel 02 needs to be installed on the middle floor of the building, the second mounting part 1012 abuts against the top of the main structure 01 or the top of the precast wall panel 02 on the next floor. The second connector 1031 is embedded in the main structure 01 or the precast wall panel 02 on the next floor. The mounting hole 1012a is set as an elongated hole and extends in the outward direction of the precast wall panel 02 to allow the precast wall panel 02 to slide in the outward direction with the main structure 01 or the precast wall panel 02 on the next floor, so as to achieve the purpose of adjustable inner and outer installation position when installing the precast wall panel 02.

[0070] When the precast wall panel 02 needs to be installed on the ground floor of the building, the second mounting part 1012 abuts against the top of the main structure 01, the second connector 1031 is embedded in the main structure 01, and the mounting hole 1012a extends in the outward direction of the precast wall panel 02 to allow the precast wall panel 02 and the main structure 01 to slide in the outward direction, so as to achieve the purpose of adjustable inner and outer installation position when installing the precast wall panel 02.

[0071] In some embodiments, a connecting steel bar 204 is provided on the top of the prefabricated wall panel 02. The connecting steel bar 204 is provided on the top of the prefabricated wall panel 02 of each layer of spliced ​​wall and is connected to the main structure 01.

[0072] Different installation methods can be used between the top of the precast wall panel 02 and the main structure 01: When the precast wall panel 02 is installed outside the main structure 01, the connecting steel bars 204 between the precast wall panel 02 and the main structure 01 are installed in an out-of-plane direction, such as... Figure 1 As shown; when the precast wall panel 02 is installed below the main structure 01, the connecting steel bars 204 between the precast wall panel 02 and the main structure 01 are installed in a vertical direction, as shown. Figure 2 As shown.

[0073] The connecting steel bars 204 between the precast wall panel 02 and the main structure 01 ensure the stability, safety, and durability of the overall building structure. The connecting steel bars 204 between the top of the precast wall panel 02 and the main structure 01 need to have sufficient rigidity and stability in the vertical direction to resist the horizontal loads caused by changes in the external environment (such as wind, seismic waves, etc.).

[0074] Optionally, high-strength steel bars can be used as connecting steel bars 204. The diameter, quantity, and anchorage depth of the steel bars are determined by calculation to ensure that the connecting steel bars 204 can maintain the stability of the overall building structure under the influence of external forces. For example, special types of steel bars such as ribbed steel bars or threaded steel bars can be used to enhance the anchorage effect, and structural measures such as reinforcing bars or steel plates can be set at the connection points to improve the local bearing capacity.

[0075] In some embodiments, the length of the sliding hole 1011a is related to the diameter of the first connector 1021, the amount of interlayer deformation or harmful interlayer deformation of the precast wall panel 02, and the construction and installation deviation of the precast wall panel 02 in the horizontal direction; or the width of the sliding hole 1011a is positively correlated with the diameter of the first connector 1021; or the length of the mounting hole 1012a is related to the diameter of the second connector 1031 and the construction and installation deviation of the precast wall panel 02 in the direction perpendicular to the precast wall panel 02; or the width of the mounting hole 1012a is related to the diameter of the second connector 1031 and the construction and installation deviation of the precast wall panel 02 in the horizontal direction.

[0076] The length of the sliding hole 1011a is related to the diameter of the first connector 1021, and the diameter of the first connector 1021 is the basic parameter for determining the length of the sliding hole 1011a. The length of the sliding hole 1011a determines the sliding space of the first mounting part 1011 relative to the first connector 1021 through the sliding hole 1011a.

[0077] Meanwhile, the length of the sliding hole 1011a is related to the interlayer deformation or harmful interlayer deformation of the precast wall panel 02. The precast wall panel 02 may be affected by various factors and deform during use. The length design of the sliding hole 1011a and the mounting hole 1012a also needs to take into account the deformation coefficient of the wall to ensure that the connectors can still maintain a stable connection when the wall deforms.

[0078] Furthermore, the length of the sliding hole 1011a is related to the construction and installation deviation of the precast wall panel 02 in the horizontal direction along the surface, and installation deviations during construction are unavoidable. The length design of the sliding hole 1011a needs to have a certain degree of tolerance to cope with the impact of construction and installation deviations on the sliding flexible connection node 10.

[0079] Therefore, the length of the sliding hole 1011a needs to take into account three parameters: the diameter of the first connector 1021, the amount of interlayer deformation or harmful interlayer deformation of the precast wall panel 02, and the construction and installation deviation of the precast wall panel 02 in the horizontal direction along the surface.

[0080] The width of the sliding hole 1011a is positively correlated with the diameter of the first connector 1021, and the diameter of the first connector 1021 is the basic parameter for determining the width of the sliding hole 1011a. The width of the sliding hole 1011a should generally be slightly larger than the diameter of the first connector 1021 to ensure that the first connector 1021 can pass smoothly through the sliding hole 1011a and has a certain amount of sliding adjustment space.

[0081] The length of the mounting hole 1012a is related to the diameter of the second connector 1031, and the diameter of the second connector 1031 is the basic parameter for determining the size of the mounting hole 1012a. The length of the mounting hole 1012a determines the sliding space of the second mounting part 1012 relative to the second connector 1031 through the mounting hole 1012a.

[0082] Meanwhile, the length of the mounting hole 1012a is related to the construction and installation deviation of the precast wall panel 02 in the vertical direction, and installation deviations during construction are unavoidable. The length design of the mounting hole 1012a needs to have a certain degree of tolerance to cope with the impact of construction and installation deviations on the sliding flexible connection node 10.

[0083] Therefore, the length of the mounting hole 1012a needs to take into account the diameter of the second connector 1031 and the construction and installation deviation of the precast wall panel 02 in the vertical direction.

[0084] The width of the mounting hole 1012a should generally be slightly larger than the diameter of the second connector 1031 to ensure that the second connector 1031 can pass smoothly through the mounting hole 1012a and has a certain amount of sliding adjustment space.

[0085] Meanwhile, the width of the mounting hole 1012a is related to the construction and installation deviation of the precast wall panel 02 in the horizontal direction along the surface, and installation deviations during construction are unavoidable. The width design of the mounting hole 1012a needs to have a certain degree of tolerance to cope with the impact of construction and installation deviations on the sliding flexible connection node 10.

[0086] Therefore, the width of the mounting hole 1012a needs to take into account both the diameter of the second connector 1031 and the construction and installation deviation of the precast wall panel 02 in the horizontal direction.

[0087] In some embodiments, the length L1 of the sliding hole 1011a satisfies: L1≥D1+λxΔ+2e1, where D1 is the diameter of the first connector 1021, Δ is the size of the interlayer deformation or harmful interlayer deformation of the precast wall panel 02, λ is the amplification factor, and e1 is the construction and installation deviation of the precast wall panel 02 in the horizontal direction along the surface; or the width B1 of the sliding hole 1011a satisfies: B1≥D1+2, where D2 is the diameter of the second connector 1031; the length L2 of the mounting hole 1012a satisfies: L2≥D2+2e2; the length B2 of the mounting hole 1012a satisfies: B2≥D2+e1, and e2 is the construction and installation deviation of the precast wall panel 02 in the direction perpendicular to the precast wall panel 02.

[0088] The maximum inter-story deformation or harmful inter-story deformation Δ is determined based on the horizontal wind load and seismic action of the main structure 01. The length of the sliding hole 1011a on the wall panel bottom edge connecting installation component 101 is determined based on the maximum inter-story deformation or harmful deformation Δ: L1≥D1+λxΔ+2e1, where D1 is the diameter of the first connecting component 1021, generally taken as 6~12mm, Δ is the maximum inter-story deformation or harmful inter-story deformation, λ is the amplification factor, which can be taken as 1.0~1.2, and e1 is the horizontal construction and installation deviation within the wall panel surface. The width B1 of the sliding hole 1011a is ≥D1+2.

[0089] The length L2 of the mounting hole 1012a is greater than or equal to D2+2e2, and the width B2 is greater than or equal to D2+e1, where D2 is the diameter of the second connector 1031 embedded in the precast wall panel 02 of the main structure 01 or the next layer, and e2 is the construction and installation deviation of the precast wall panel 02 in the direction perpendicular to the precast wall panel 02.

[0090] Calculations can ensure that the sliding hole 1011a and the mounting hole 1012a maintain sufficient strength and stability when subjected to external forces, avoiding excessive stress concentration or damage.

[0091] In some embodiments, the length of the insert 105 is related to the outer diameter of the third locking member 1023 and the construction deviation in the vertical direction of the precast wall panel 02; or the width of the insert 105 is positively correlated with the outer diameter of the third locking member 1023. The depth of the insert 105 is related to the thickness of the third locking member 1023 and the reserved gap between the third locking member 1023 and the insert 105.

[0092] The length design of the insert 105 needs to comprehensively consider the outer diameter of the third locking member 1023 and the vertical construction deviation of the precast wall panel 02. Specifically, the insert 105 should be long enough to accommodate the third locking member 1023 and ensure that the third locking member 1023 can still move freely within the insert 105 and maintain a stable connection even when there is a vertical construction deviation in the precast wall panel 02. Simultaneously, the length of the insert 105 is related to the vertical construction and installation deviation of the precast wall panel 02, and installation deviations during construction are unavoidable. The length design of the insert 105 needs to have a certain degree of tolerance to cope with the impact of construction and installation deviations on the sliding flexible connection node 10. The width of the insert 105 is positively correlated with the outer diameter of the third locking member 1023. To ensure that the third locking member 1023 can be smoothly inserted into the insert 105 and remain stable, the width of the insert 105 should be at least equal to or slightly greater than the width or maximum outer diameter of the third locking member 1023.

[0093] The width of the insert 105 is related to the reserved gap between the insert 105 and the third locking member 1023. This ensures that the third locking member 1023 will not be difficult to install due to excessive tightness in the fit with the insert 105, nor will the connection be unstable due to excessive looseness in the fit between the third locking member 1023 and the insert 105.

[0094] The depth of the insert 105 is related to the thickness of the third locking member 1023. In order to ensure that the third locking member 1023 can be smoothly inserted into the insert 105 and remain stable, the depth of the insert 105 should be at least equal to or slightly greater than the thickness of the third locking member 1023.

[0095] The depth of the insert 105 is related to the reserved gap between the insert 105 and the third locking member 1023. This ensures that the third locking member 1023 will not be difficult to install due to excessive tightness in the fit with the insert 105, nor will the connection be unstable due to excessive looseness in the fit between the third locking member 1023 and the insert 105.

[0096] In some embodiments, the length l1 of the insert 105 satisfies: l1≥c1+2e3+20; or the width b1 of the insert 105 satisfies: b1≥c1+2i; or the depth b2 of the insert 105 satisfies b2≥c2+i; wherein, c1 is the planar dimension of the third locking member 1023, i is the size of the reserved gap between the third locking member 1023 and the insert 105, e3 is the vertical construction deviation of the prefabricated wall panel 02, and c2 is the thickness of the third locking member 1023.

[0097] The length l1 of the embedded part 105 extending outward from the surface of the precast wall panel 02 within the sliding flexible connection node 10 installed at the bottom of the precast wall panel 02 is ≥ c1 + 2e3 + 20, and the width b1 is ≥ c1 + 2i. c1 is the planar dimension of the third locking part 1023, i is the size of the reserved gap between the third locking part 1023 and the embedded part 105, generally 2~3mm, e3 is the vertical construction deviation of the precast wall panel 02, and the depth b2 is ≥ c2 + i, where c2 is the thickness of the third locking part 1023. The dimensions and thickness of the third locking part 1023 can be determined according to the diameter specifications of the first connecting part 1021.

[0098] Calculations ensure that the third locking member 1023 will not be difficult to install due to excessive tightness in the fit with the insert 105, nor will the connection be unstable due to excessive looseness in the fit between the third locking member 1023 and the insert 105.

[0099] The construction method for sliding flexible connection nodes is as follows: Step S1: First, determine the specifications of the embedded angle steel, connecting bolts, and the size of the reserved elongated holes on the angle steel based on the form of the main structure 01, horizontal wind load, seismic action, etc.

[0100] Step S2: Install the sealant 202 at the joint between the precast wall panel 02 and the main structure 01 or the precast wall panel 02 of the next floor.

[0101] Step S3: The precast wall panel 02 is hoisted to the pre-installation position on site, and the pre-reserved connecting steel bar 204 at the top of the precast wall panel 02 is anchored into the main structure 01. After the main structure 01 is poured, the pre-set pad at the bottom of the precast wall panel 02 is removed.

[0102] Step S4: Fix the first mounting part 1011 of the sliding flexible connection node 10 to the precast wall panel 02. After the installation positioning of the precast wall panel 02 in the outward direction is to the allowable construction accuracy, fix the first fastening component 102 and the second fastening component 103 of the sliding flexible connection node 10.

[0103] Step S5: Waterproof sealing is applied to the joints between the precast wall panel 02 and the main structure 01 or the precast wall panel 02 of the next floor.

[0104] Step S6: Finally, a cover plate 203 is installed at the installation groove 201 reserved in the precast wall panel 02.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A sliding flexible connection node for an upper-mounted precast concrete wall panel, characterized in that, The slidable flexible connection node is applied to a building, the building comprising multiple layers of interlocking walls arranged along the height direction, each layer of the interlocking wall comprising a main structure and prefabricated wall panels, and the slidable flexible connection node comprising: The mounting component includes a first mounting part and a second mounting part that are perpendicular to each other. The first mounting part is used to abut against the precast wall panel, and the second mounting part is used to abut against the main structure or to abut against the precast wall panel or main structure of the next layer. A sliding hole is provided in the first mounting portion; A mounting hole is provided in the second mounting portion; The first fastening assembly includes a first connector and a first locking member movably connected to the first connector. The first connector passes through the sliding hole and is fixed to the precast wall panel. The first connector slides relative to the first mounting part through the sliding hole. The first locking member is fastened to the first connector. The second fastening assembly includes a second connector and a second locking member movably connected to the second connector. The second connector is embedded in the main structure or the precast wall panel of the next layer. The second connector can pass through the mounting hole. The second locking member is fastened to the second connector and abuts against the second mounting part. A sliding plate assembly is provided, wherein the sliding plate assembly is disposed between the first locking member and the mounting member, and / or the sliding plate assembly is disposed between the second locking member and the mounting member. The sliding plate assembly further includes a first sliding plate and a second sliding plate, wherein the first sliding plate is disposed between the mounting member and the first locking member and abuts against the first mounting portion, and / or the first sliding plate is disposed between the second locking member and the mounting member, and the second sliding plate is disposed between the first sliding plate and the first locking member and abuts against the first locking member.

2. The slidable flexible connection node according to claim 1, characterized in that, The slidable flexible connection node also includes: An insert, comprising a hollow cavity, is embedded in the precast wall panel, wherein the extending direction of the insert is perpendicular to the extending direction of the sliding hole; The first fastening assembly further includes a third locking member located in the hollow cavity of the insert. The first connector passes through the precast wall panel and the sliding hole and is fastened to the third locking member to connect the insert to the first mounting part.

3. The slidable flexible connection node according to claim 2, characterized in that, The first mounting part abuts against the precast wall panel, the first connecting member is disposed on the side of the precast wall panel, the sliding hole extends vertically in the in-plane of the precast wall panel, and the insert extends horizontally in the in-plane of the precast wall panel. The second mounting part abuts against the main structure, and the second connector is embedded in the side of the main structure.

4. The slidable flexible connection node according to claim 2, characterized in that, The first mounting part abuts against the insert, the first connecting member is disposed at the bottom of the precast wall panel, the sliding hole extends horizontally in the in-plane direction of the precast wall panel, and the insert extends vertically in the in-plane direction of the precast wall panel. The second mounting part abuts against the top of the precast wall panel or the top of the main structure of the next layer, and the second connector is embedded in the precast wall panel or the main structure of the next layer.

5. The slidable flexible connection node according to claim 4, characterized in that, When the side of the precast wall panel is open or the sliding flexible connection node at the bottom of the precast wall panel meets the preset conditions, the side of the precast wall panel is not provided with the sliding flexible connection node. or When the side of the precast wall panel is a precast wall column, the side of the precast wall panel is not provided with the sliding flexible connection node, and the side of the precast wall panel is connected to the main structure through a grouting sleeve.

6. The slidable flexible connection node according to any one of claims 1 to 5, characterized in that, The length of the sliding hole is related to the diameter of the first connector, the interlayer deformation or harmful interlayer deformation of the precast wall panel, and the construction and installation deviation of the precast wall panel in the horizontal direction; or The width of the sliding hole is positively correlated with the diameter of the first connector; or The length of the mounting hole is related to the diameter of the second connector and the construction and installation deviation of the precast wall panel in the out-of-plane direction of the precast wall panel; or The width of the mounting hole is related to the diameter of the second connector and the horizontal construction and installation deviation of the precast wall panel along its surface.

7. The slidable flexible connection node according to any one of claims 1 to 5, characterized in that, The length L1 of the sliding hole satisfies: L1≥D1+λ×Δ+2e1; or The width B1 of the sliding hole satisfies: B1 ≥ D1 + 2; or The length L2 of the mounting hole satisfies: L2≥D2+2e2; or The length B2 of the mounting hole satisfies: B2≥D2+e1; Wherein, D1 is the diameter of the first connector, Δ is the size of the interlayer deformation or harmful interlayer deformation of the precast wall panel, λ is the amplification factor, e1 is the construction and installation deviation of the precast wall panel in the horizontal direction along the surface, D2 is the diameter of the second connector, and e2 is the construction and installation deviation of the precast wall panel in the outward direction along the surface of the precast wall panel.

8. The slidable flexible connection node according to any one of claims 2 to 5, characterized in that, The length of the insert is related to the in-plane vertical construction deviation of the precast wall panel, which is related to the outer diameter of the third locking member; or The width of the insert is related to the outer diameter of the third locking member and the reserved gap between the third locking member and the insert; or The depth of the insert is related to the thickness of the third locking member and the reserved gap between the third locking member and the insert.

9. The slidable flexible connection node according to any one of claims 2 to 5, characterized in that, The length l1 of the insert satisfies: l1≥c1+2e3+20; or The width b1 of the insert satisfies: b1 ≥ c1 + 2i; or The depth b2 of the embedding satisfies b2≥c2+i; Wherein, c1 is the outer diameter of the third locking member, i is the size of the reserved gap between the third locking member and the embedded member, e3 is the vertical construction deviation of the precast wall panel, and c2 is the thickness of the third locking member.

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