Box column splicing joint

Abstract

The application relates to a box column splicing joint, belonging to the technical field of building engineering. The box column splicing joint comprises a first box column, a second box column and a sleeve connecting device. The lower end of the first box column is provided with first engaging members at four corners. The upper end of the second box column is provided with second engaging members at four corners. The sleeve connecting device comprises a hoop cable and four groups of corner engaging assemblies. The four groups of corner engaging assemblies are arranged in one-to-one correspondence with the four corners of the first box column and the second box column. The upper part of the corner engaging assembly is engaged with the first engaging member, and the lower part is engaged with the second engaging member. The hoop cable is circumferentially sleeved on the outer periphery of the first box column or the second box column and sequentially connected with the four groups of corner engaging assemblies. The hoop cable is in a pre-tightened state to press the four groups of corner engaging assemblies against the corners of the first box column and the corners of the second box column. The box column splicing joint realizes the splicing of the upper and lower box columns and has excellent bearing performance and high assembly characteristics.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and in particular relates to a box-type column splicing node. Background Technology

[0002] Prefabricated steel structures are a type of building structure based on standardized design, factory production, and assembly-based construction. Unlike traditional on-site welding or bolted connections, prefabricated steel structures break down buildings into several prefabricated components or units, which are fabricated in factories, transported to the construction site, and then assembled into a complete structure using reliable connection technologies. This structural system offers advantages such as high production efficiency, controllable quality, short construction cycles, and minimal environmental impact, aligning with the development trends of green building and building industrialization. It also has broad application prospects in rapid construction for public emergencies and urban renewal.

[0003] In prefabricated steel structures, components typically include main parts such as steel columns, steel beams, and supports, as well as enclosure components such as floor slabs and wall panels. Among these, box-type columns are a commonly used type of steel column, and the splicing between box-type column components is one of the key factors affecting the overall structural performance and construction efficiency. Currently, there are two main methods for splicing box-type column components: one is to splice the upper and lower box-type columns by welding. Although welding has advantages such as excellent load-bearing capacity and uniform and reliable force transmission, it has disadvantages such as large welding volume and low assembly degree; the other is to splice the upper and lower box-type columns by single-sided bolts. Although the single-sided bolt connection method has advantages such as convenient construction and high assembly degree, it requires drilling holes in the box-type column components, which weakens the load-bearing capacity of the box-type column components.

[0004] Therefore, how to provide a box column splicing node that combines excellent load-bearing performance and high prefabrication characteristics to achieve reliable connection between box columns and shorten the construction cycle of prefabricated steel structure buildings is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing box-type column splicing methods, this invention provides a box-type column splicing node. This node forms an outer sleeve connection device by connecting four sets of corner interlocking components connected by pre-tightened circumferential cables. This device interlocks with the first and second interlocking components at the splicing points of the first and second box-type columns, thereby achieving the splicing of the two box-type columns and possessing both excellent load-bearing performance and high degree of prefabrication.

[0006] This invention provides a box-type column splicing node, comprising: The first box-shaped column extends vertically, and the outer sides of the four corners at its lower end are respectively provided with first interlocking parts; The second box-shaped column extends vertically and is assembled below the first box-shaped column, with second interlocking parts provided on the outer sides of the four corners at its upper end; The outer connecting device includes a circumferential cable and four sets of corner engagement components; the four sets of corner engagement components are arranged one-to-one with the four corners of the first box-shaped column and the four corners of the second box-shaped column, the upper part of the corner engagement component engages with the first engagement member and the lower part engages with the second engagement member; the circumferential cable is sleeved around the outer periphery of the first box-shaped column and / or the second box-shaped column and sequentially connects the four sets of corner engagement components, the circumferential cable is in a pre-tightened state so that the four sets of corner engagement components are pressed against the corners of the first box-shaped column and the corners of the second box-shaped column.

[0007] In some embodiments, the first engaging member includes a plurality of first serrated portions arranged vertically, and the second engaging member includes a plurality of second serrated portions arranged vertically; the corner engaging assembly includes a corner connecting plate, the cross-section of which is L-shaped to match the corner shape of the first box-shaped column and the corner shape of the second box-shaped column, the upper part of the inner side of the corner connecting plate is provided with a third serrated portion that engages with the first serrated portions, and the lower part of the inner side is provided with a fourth serrated portion that engages with the second serrated portions; the circumferential cable is sleeved on the outside of the four corner connecting plates of the four sets of corner engaging assemblies to press the four corner connecting plates tightly against the corner of the first box-shaped column and the corner of the second box-shaped column.

[0008] In some embodiments, the corner engagement assembly further includes a corner protective sleeve whose inner surface is attached to the outer surface of the corner connecting plate, the corner protective sleeve having a channel for the circumferential cable to pass through.

[0009] In some embodiments, the outer surface of the corner of the corner connecting plate is arc-shaped, and the portion of the circumferential cable corresponding to the corner of the corner connecting plate in the corner protective sleeve is exposed outside the corner protective sleeve to contact the corner of the corner connecting plate.

[0010] In some embodiments, the corner connecting plate includes two mutually perpendicularly connected wing plate portions. The upper part of the inner side surface of each of the two wing plate portions is provided with a third serrated portion, and the lower part of the inner side surface of each of the two wing plate portions is provided with a force transmission protrusion. The inner side surface of the corner protective sleeve is provided with a receiving groove that matches the shape of the force transmission protrusion. The circumferential cable is exposed outside the corner protective sleeve at the receiving groove to contact the force transmission protrusion.

[0011] In some embodiments, the force-transmitting protrusion is semi-cylindrical, with the axis of the semi-cylindrical protrusion extending vertically and located in the middle of the wing section.

[0012] In some embodiments, the first engaging member includes a first angular base plate portion with an L-shaped cross-section, the inner side of the first angular base plate portion being fitted and connected to the corner of the first box-shaped post, and a first serrated portion being connected to the outer side of the first angular base plate portion; the second engaging member includes a second angular base plate portion with an L-shaped cross-section, the inner side of the second angular base plate portion being fitted and connected to the corner of the second box-shaped post, and a second serrated portion being connected to the outer side of the second angular base plate portion.

[0013] In some embodiments, the first sawtooth portion includes a first upward-sloping sawtooth portion and a first downward-sloping sawtooth portion, the third sawtooth portion includes a third upward-sloping sawtooth portion and a third downward-sloping sawtooth portion, the third upward-sloping sawtooth portion engaging with the first downward-sloping sawtooth portion, and the third downward-sloping sawtooth portion engaging with the first upward-sloping sawtooth portion; the second sawtooth portion includes a second upward-sloping sawtooth portion and a second downward-sloping sawtooth portion, and the fourth sawtooth portion includes a fourth upward-sloping sawtooth portion and a fourth downward-sloping sawtooth portion, the fourth upward-sloping sawtooth portion engaging with the second downward-sloping sawtooth portion, and the fourth downward-sloping sawtooth portion engaging with the second upward-sloping sawtooth portion.

[0014] In some embodiments, the circumferential cable includes a cable and a first connector and a second connector respectively provided at both ends of the cable, the first connector and the second connector being threaded together to make the cable circumferential.

[0015] In some embodiments, there are multiple circumferential cables, which are evenly distributed vertically within the corner engagement assembly.

[0016] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: 1. The box-type column splicing node provided in some embodiments of the present invention, by setting first interlocking parts at the four corners of the lower end of the first box-type column and setting second interlocking parts at the four corners of the upper end of the second box-type column, after the first box-type column and the second box-type column are spliced ​​together, the four sets of corner interlocking components form an interlocking fit with the first interlocking parts and the second interlocking parts. Then, by applying pre-tightening force through the circumferentially sleeved circumferential cable, the four sets of corner interlocking components are firmly pressed into the corners of the splice of the first box-type column and the second box-type column, thereby realizing the rapid assembly connection of the first box-type column and the second box-type column spliced ​​together. No on-site welding operation is required, and no drilling is required for the box-type column components. Under the premise of ensuring the reliable load-bearing capacity of the node connection, a high degree of prefabricated connection is achieved, which is conducive to shortening the construction cycle of prefabricated steel structure buildings. 2. In some embodiments of the present invention, the corner connecting plate of the corner interlocking assembly engages with the first interlocking member and the second interlocking member through serrated interlocking, which increases the contact area and improves the uniformity of force transmission. At the same time, the circumferential cable is sleeved on the outside of the four sets of corner connecting plates, and its preload can be evenly transmitted to each corner connecting plate, ensuring that the corner connecting plate is tightly fitted with the corner of the first box column and the second box column, avoiding loosening or force transmission deviation, and effectively improving the load-bearing capacity and structural stability of the node. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of a box-type column splicing node provided in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a box-shaped column splicing node provided in an embodiment of the present invention after splicing the first box-shaped column and the second box-shaped column; Figure 3 This is a schematic diagram of the outer sleeve connection device in a box-type column splicing node provided in an embodiment of the present invention, in which the first joint and the second joint of the circumferential cable are in a connected state; Figure 4 This is a schematic diagram of the outer sleeve connection device in a box-type column splicing node provided in an embodiment of the present invention, in which the first and second joints of the circumferential cable are in an unconnected state; Figure 5 This is an exploded view of the corner interlocking component in a box-shaped column splicing node according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the corner protective sleeve in a box-type column splicing node provided by an embodiment of the present invention, which is connected by circumferential cables to four sets of corner interlocking components.

[0018] In the picture: 1. First box-type column; 2. Second box-type column; 3. First interlocking member; 4. Second interlocking member; 5. Outer sleeve connecting device; 31. First triangular base plate portion; 32. First serrated portion; 32a. First descending serrated portion; 32b. First ascending serrated portion; 41. Second triangular base plate portion; 42. Second serrated portion; 42a. Second descending serrated portion; 42b. Second ascending serrated portion; 51. Corner engagement assembly; 511. Corner connecting plate; 5111. Force transmission protrusion; 5112. Third serrated section; 5112a. Third upward serrated section; 5112b. Third downward serrated section; 5113. Fourth serrated section; 5113a. Fourth upward serrated section; 5113b. Fourth downward serrated section; 5114. Wing plate section; 512. Corner protective sleeve; 5121. Channel; 5122. Receiving groove; 52. Circumferential cable; 521. Cable; 522. First connector; 523. Second connector. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] The terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] As attached Figures 1-6As shown, in a schematic embodiment of the box-type column splicing node of the present invention, the box-type column splicing node includes a first box-type column 1, a second box-type column 2, and an outer sleeve connecting device 5; the first box-type column 1 extends vertically, and its lower four corners are respectively provided with first interlocking members 3; the second box-type column 2 extends vertically and splices below the first box-type column 1, and its upper four corners are respectively provided with second interlocking members 4; the outer sleeve connecting device 5 includes a circumferential cable 52 and four sets of corner interlocking components 51. The four sets of corner engagement components 51 are arranged one-to-one with the four corners of the first box-shaped post 1 and the four corners of the second box-shaped post 2. The upper part of the corner engagement component 51 engages with the first engagement member 3 and the lower part engages with the second engagement member 4. The circumferential cable 52 is sleeved around the outer periphery of the first box-shaped post 1 and the second box-shaped post 2 and is connected to the four sets of corner engagement components 51 in sequence. The circumferential cable 52 is in a pre-tightened state so that the four sets of corner engagement components 51 are pressed against the corners of the first box-shaped post 1 and the second box-shaped post 2.

[0024] The working principle of the above-mentioned box-type column splicing node is as follows: the first interlocking member 3 at the lower corner of the first box-type column 1 and the second interlocking member 4 at the upper corner of the second box-type column 2 respectively form an interlocking engagement with the four sets of corner interlocking components 51. Utilizing the contact friction and limiting effect of the interlocking structure, the horizontal relative displacement and vertical misalignment of the first box-type column 1 and the second box-type column 2 are restricted, laying the foundation for subsequent force transmission. At the same time, the circumferential cable 52 sleeved on the outer periphery of the first box-type column 1 and the second box-type column 2 is in a pre-tightened state, and its circumferential pre-tightening force is evenly transmitted to the four sets of corner interlocking components 51, forcing the corner interlocking components 51 to tightly press against the splicing of the first box-type column 1 and the second box-type column 2. The outer surface of the corner further increases the contact pressure of the interlocking parts and enhances the friction, thereby strengthening the connection stiffness and integrity of the node. When the node is subjected to vertical load, horizontal load or seismic action, the force between the first box column 1 and the second box column 2 is transmitted through the interlocking surfaces of the first interlocking member 3, the second interlocking member 4 and the corner interlocking component 51, and then transmitted to the circumferential cable 52 through the corner interlocking component 51. The tensile properties of the circumferential cable 52 are used to disperse the force, avoid local force concentration, ensure uniform force transmission, realize the synchronous force of the first box column 1 and the second box column 2, effectively resist structural deformation, and ensure the structural stability of the splicing node.

[0025] The aforementioned box-type column splicing node achieves rapid assembly and connection of the first box-type column 1 and the second box-type column 2 by setting first interlocking parts 3 at the four corners of the lower end of the first box-type column 1 and second interlocking parts 4 at the four corners of the upper end of the second box-type column 2. After the first box-type column 1 and the second box-type column 2 are spliced ​​together, the four sets of corner interlocking components 51 form an interlocking fit with the first interlocking parts 3 and the second interlocking parts 4. Then, the circumferentially sleeved circumferential cable 52 applies a pre-tightening force to firmly press the four sets of corner interlocking components 51 into the corners of the splice of the first box-type column 1 and the second box-type column 2. This achieves rapid assembly and connection of the first box-type column 1 and the second box-type column 2 spliced ​​together without the need for on-site welding or drilling of the box-type column components. Under the premise of ensuring reliable load-bearing capacity of the node connection, a high degree of prefabricated connection is achieved, which is conducive to shortening the construction cycle of prefabricated steel structure buildings.

[0026] like Figures 1-4 As shown, the first engaging member 3 includes multiple vertically arranged first serrated portions 32, and the second engaging member 4 includes multiple vertically arranged second serrated portions 42; the corner engaging assembly 51 includes a corner connecting plate 511, the cross-section of the corner connecting plate 511 is L-shaped to match the corner shape of the first box-shaped column 1 and the corner of the second box-shaped column 2, the upper part of the inner side of the corner connecting plate 511 is provided with a third serrated portion 5112 that engages with the first serrated portion 32, and the lower part of the inner side is provided with a fourth serrated portion 5113 that engages with the second serrated portion 42; the circumferential cable 52 is sleeved on the outside of the four corner connecting plates 511 of the four sets of corner engaging assemblies 51 to press the four corner connecting plates 511 tightly against the corner of the first box-shaped column 1 and the corner of the second box-shaped column 2. In this embodiment, an L-shaped corner connecting plate 511 is used, which can tightly fit the outer side of the corner of the first box column 1 and the second box column 2, thereby realizing the relative displacement of the first box column 1 and the second box column 2. The third serrated part 5112 provided on the upper inner side of the corner connecting plate 511 engages with the first serrated part 32 of the first engaging member 3, and the fourth serrated part 5113 provided on the lower inner side engages with the second serrated part 42 of the second engaging member 4. This increases the contact area through serrated engagement and improves the uniformity of force transmission. At the same time, the circumferential cable 52 is sleeved on the outside of the four sets of corner connecting plates 511, and its preload can be evenly transmitted to each corner connecting plate 511, ensuring that the corner connecting plate 511 is tightly fitted with the corner of the first box column 1 and the second box column 2, avoiding loosening or force transmission deviation, and effectively improving the load-bearing capacity and structural stability of the node. It should be noted that the corner connecting plate 511 can be made of angle steel, and the third serrated part 5112 and the fourth serrated part 5113 can be obtained by processing steel plates and then welded to the inner side of the angle steel.

[0027] like Figures 3-6As shown, the corner engagement assembly 51 also includes a corner protective sleeve 512 whose inner surface is attached to the outer surface of the corner connecting plate 511. The corner protective sleeve 512 has a channel 5121 for the circumferential cable 52 to pass through. In this embodiment, by providing the corner protective sleeve 512, damage to the corner connecting plate 511 caused by external collisions, friction, or other external forces can be avoided. Moreover, by providing the channel 5121 in the corner protective sleeve 512, the circumferential cable 52 can be limited and guided, preventing the circumferential cable 52 from shifting or misaligning during pre-tensioning or use, and avoiding excessive wear between the circumferential cable 52 and the corner connecting plate 511. This ensures the stability of the circumferential cable 52 in the pre-tensioned state and ensures that it can continuously provide uniform clamping force to the corner engagement assembly 51. It should be noted that the corner protective sleeve 512 can be made of elastic materials such as rubber or thermoplastic elastomer, and the corner protective sleeve 512 can be installed on the outer side of the corner connecting plate 511 by adhesive.

[0028] like Figure 5 and Figure 6 As shown, the outer surface of the corner of the corner connecting plate 511 is arc-shaped. The portion of the circumferential cable 52 corresponding to the corner of the corner connecting plate 511 in the corner protective sleeve 512 is exposed outside the corner protective sleeve 512 to contact the corner of the corner connecting plate 511. In this embodiment, by exposing the portion of the circumferential cable 52 corresponding to the corner of the corner connecting plate 511 in the corner protective sleeve 512 outside the protective sleeve, the circumferential cable 52 directly contacts the corner of the corner connecting plate 511 to transmit preload to the corner connecting plate 511. This ensures that the four sets of corner engagement components 51 can synchronously and evenly press against the four corners of the first box-shaped post 1 and the second box-shaped post 2, limiting the relative displacement of the first box-shaped post 1 and the second box-shaped post 2, and ensuring the reliability of the connection. Meanwhile, designing the outer side of the corner of the corner connecting plate 511 as an arc surface can avoid large frictional wear between the circumferential cable 52 and the corner of the corner connecting plate 511, which is beneficial to extending the life of the corner engagement assembly 51.

[0029] like Figure 5 and Figure 6As shown, the corner connecting plate 511 includes two mutually perpendicularly connected wing plate portions 5114. The upper part of the inner side of each of the two wing plate portions 5114 is provided with a third serrated portion 5112, and the lower part of the inner side is provided with a fourth serrated portion 5113. The outer side of each of the two wing plate portions 5114 is provided with a force transmission protrusion 5111. The inner side of the corner protective sleeve 512 is provided with a receiving groove 5122 that matches the shape of the force transmission protrusion 5111. The circumferential cable 52 is exposed outside the corner protective sleeve 512 at the receiving groove 5122 to contact the force transmission protrusion 5111. By providing force-transmitting protrusions 5111 on the two wing portions 5114 of the corner connecting plate 511 and making the circumferential cable 52 contact the force-transmitting protrusions 5111, force can be applied to the wing portions 5114 of the corner connecting plate 511 through the force-transmitting protrusions 5111, ensuring that the corner connecting plate 511 is firmly connected to the first box column 1 and the second box column 2.

[0030] like Figure 5 As shown, the force-transmitting protrusion 5111 is preferably semi-cylindrical, with the axis of the semi-cylinder extending vertically and located in the middle of the wing plate portion 5114. By using a semi-cylindrical force-transmitting protrusion 5111, it is possible to ensure that the preload of the circumferential cable 52 is evenly transmitted to the corner connecting plate 511.

[0031] like Figure 2 As shown, the first engaging member 3 includes a first angular base plate portion 31 with an L-shaped cross-section. The inner side of the first angular base plate portion 31 is fitted and connected to the corner of the first box-shaped column 1, and the first serrated portion 32 is connected to the outer side of the first angular base plate portion 31. The second engaging member 4 includes a second angular base plate portion 41 with an L-shaped cross-section. The inner side of the second angular base plate portion 41 is fitted and connected to the corner of the second box-shaped column 2, and the second serrated portion 42 is connected to the outer side of the second angular base plate portion 41. The first angular base plate portion 31 and the second angular base plate portion 41 provide a stable mounting base for the first serrated portion 32 and the second serrated portion 42. It should be noted that the first triangular base plate portion 31 and the first serrated portion 32 can be integrated, that is, processed from the same steel plate, and the first serrated portion 32 is formed by processing serrations on the steel plate; similarly, the second triangular base plate portion 41 and the second serrated portion 42 can also be integrated, that is, processed from the same steel plate, and the second serrated portion 42 is formed by processing serrations on the steel plate.

[0032] like Figures 1-4As shown, the first sawtooth portion 32 includes a first upward sawtooth portion 32b inclined upward and a first downward sawtooth portion 32a inclined downward; the third sawtooth portion 5112 includes a third upward sawtooth portion 5112a inclined upward and a third downward sawtooth portion 5112b inclined downward; the third upward sawtooth portion 5112a engages with the first downward sawtooth portion 32a, and the third downward sawtooth portion 5112b engages with the first upward sawtooth portion 32b; the second sawtooth portion 42 includes a second upward sawtooth portion 42b inclined upward and a second downward sawtooth portion 42a inclined downward; the fourth sawtooth portion 5113 includes a fourth upward sawtooth portion 5113a inclined upward and a fourth downward sawtooth portion 5113b inclined downward; the fourth upward sawtooth portion 5113a engages with the second downward sawtooth portion 42a, and the fourth downward sawtooth portion 5113b engages with the second upward sawtooth portion 42b. This embodiment, by employing a bidirectional sawtooth interlocking design, significantly improves the pull-out and shear resistance of the joint, effectively solving the problems of uneven force distribution and easy loosening in unidirectional sawtooth interlocking, and also facilitating the reliable transmission of internal forces between the first box-type column 1 and the second box-type column 2. It should be noted that, to facilitate the processing of sawtooth portions in different directions, the first upward sawtooth portion 32b, the first downward sawtooth portion 32a, the second upward sawtooth portion 42b, and the second downward sawtooth portion 42a can be processed from steel plates, and after forming, welded to the first box-type column 1 and the second box-type column 2 respectively.

[0033] like Figure 3 and Figure 4 As shown, the circumferential cable 52 includes a cable 521 and a first connector 522 and a second connector 523 respectively located at both ends of the cable 521. The first connector 522 and the second connector 523 are threaded together to make the cable 521 form a ring. In this embodiment, the first connector 522 and the second connector 523 are threaded together, which can quickly splice the cable 521 to form a ring structure, facilitating on-site construction and assembly.

[0034] like Figure 3 and Figure 4 As shown, there are multiple circumferential cables 52, which are evenly distributed vertically within the corner engagement assembly 51. These multiple vertically evenly distributed circumferential cables 52 ensure a secure connection between the corner engagement assembly 51 and the first box-shaped post 1 and the second box-shaped post 2.

[0035] Furthermore, it should be noted that the specific assembly process of the aforementioned box-type column splicing node is as follows: In the factory, the first interlocking part 3 and the second interlocking part 4 are welded to the lower end of the first box-type column 1 and the upper end of the second box-type column 2, respectively; In the factory, the cable 521 of the circumferential cable 52 is passed sequentially through the holes 5121 of the four corner protective sleeves 512, connecting the four corner protective sleeves 512, and the four corner connecting plates 511 are respectively glued to the inner side of the corresponding four corner protective sleeves 512 to form four sets of corner interlocking components 51, completing the assembly of the outer sleeve connecting device 5; At the construction site, the lower end of the first box-type column 1 and the... After the upper end of the second box-shaped column 2 is assembled, the outer connecting device 5 is fitted onto the joint of the first box-shaped column 1 and the second box-shaped column 2, so that the four sets of corner interlocking components 51 are respectively attached to the four corners of the joint of the first box-shaped column 1 and the second box-shaped column 2. The first joint 522 and the second joint 523 at both ends of the cable 521 are connected, so that the cable 521 is formed into a ring and pre-tightened, thereby applying pressure to the four sets of corner interlocking components 51 through the circumferential cable 52, so that the corner interlocking components 51 are tightly pressed against the outer side of the corner of the joint of the first box-shaped column 1 and the second box-shaped column 2, thus completing the splicing of the first box-shaped column 1 and the second box-shaped column 2.

[0036] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A box-type column splicing node, characterized in that, include: The first box-shaped column extends vertically, and the outer sides of the four corners at its lower end are respectively provided with first interlocking parts; The second box-shaped column extends vertically and is assembled below the first box-shaped column, and the outer sides of the four corners at its upper end are respectively provided with second interlocking parts; The outer connecting device includes a circumferential cable and four sets of corner engagement components; the four sets of corner engagement components are arranged one-to-one with the four corners of the first box-shaped column and the four corners of the second box-shaped column, the upper part of the corner engagement component engages with the first engagement member and the lower part engages with the second engagement member; the circumferential cable is sleeved around the outer periphery of the first box-shaped column and / or the second box-shaped column and sequentially connects the four sets of corner engagement components, the circumferential cable is in a pre-tightened state so that the four sets of corner engagement components are pressed against the corners of the first box-shaped column and the corners of the second box-shaped column.

2. The box-type column splicing node according to claim 1, characterized in that, The first engaging member includes a plurality of first serrated portions arranged vertically, and the second engaging member includes a plurality of second serrated portions arranged vertically. The corner engaging assembly includes a corner connecting plate, the corner connecting plate having an L-shaped cross-section to match the corner shape of the first box-shaped column and the corner of the second box-shaped column. The upper part of the inner side of the corner connecting plate is provided with a third serrated portion that engages with the first serrated portions, and the lower part of the inner side is provided with a fourth serrated portion that engages with the second serrated portions. The circumferential cable is sleeved on the outside of the four corner connecting plates of the four sets of corner engaging assemblies to press the four corner connecting plates tightly against the corners of the first box-shaped column and the corners of the second box-shaped column.

3. The box-type column splicing node according to claim 2, characterized in that, The corner engagement assembly also includes a corner protective sleeve whose inner surface is attached to the outer surface of the corner connecting plate, and the corner protective sleeve has a channel for the circumferential cable to pass through.

4. The box-type column splicing node according to claim 3, characterized in that, The outer surface of the corner of the corner connecting plate is arc-shaped, and the portion of the circumferential cable corresponding to the corner of the corner connecting plate is exposed outside the corner protective sleeve to contact the corner of the corner connecting plate.

5. The box-type column splicing node according to claim 3 or 4, characterized in that, The corner connecting plate includes two mutually perpendicularly connected wing plate portions. The upper part of the inner side surface of each of the two wing plate portions is provided with the third serration portion, and the lower part of the inner side surface of each of the two wing plate portions is provided with the fourth serration portion. The outer side surface of each of the two wing plate portions is provided with a force transmission protrusion. The inner side surface of the corner protective sleeve is provided with a receiving groove that matches the shape of the force transmission protrusion. The circumferential cable is exposed outside the corner protective sleeve at the receiving groove to contact the force transmission protrusion.

6. The box-type column splicing node according to claim 5, characterized in that, The force-transmitting protrusion is semi-cylindrical, with the axis of the semi-cylindrical extending vertically and located in the middle of the wing plate portion.

7. The box-type column splicing node according to claim 2, characterized in that, The first engaging member includes a first angular base plate portion with an L-shaped cross-section, the inner side of the first angular base plate portion being fitted and connected to the corner of the first box-shaped column, and the first serrated portion being connected to the outer side of the first angular base plate portion; the second engaging member includes a second angular base plate portion with an L-shaped cross-section, the inner side of the second angular base plate portion being fitted and connected to the corner of the second box-shaped column, and the second serrated portion being connected to the outer side of the second angular base plate portion.

8. The box-type column splicing node according to claim 2 or 7, characterized in that, The first sawtooth portion includes a first upward-sloping sawtooth portion and a first downward-sloping sawtooth portion, the third sawtooth portion includes a third upward-sloping sawtooth portion and a third downward-sloping sawtooth portion, the third upward-sloping sawtooth portion engaging with the first downward-sloping sawtooth portion, and the third downward-sloping sawtooth portion engaging with the first upward-sloping sawtooth portion; the second sawtooth portion includes a second upward-sloping sawtooth portion and a second downward-sloping sawtooth portion, the fourth sawtooth portion includes a fourth upward-sloping sawtooth portion and a fourth downward-sloping sawtooth portion, the fourth upward-sloping sawtooth portion engaging with the second downward-sloping sawtooth portion, and the fourth downward-sloping sawtooth portion engaging with the second upward-sloping sawtooth portion.

9. The box-type column splicing node according to claim 1, characterized in that, The circumferential cable includes a cable and a first connector and a second connector respectively provided at both ends of the cable. The first connector and the second connector are threaded together to make the cable form a ring.

10. The box-type column splicing node according to claim 1, characterized in that, The circumferential cables consist of multiple strands, which are evenly distributed vertically within the corner engagement assembly.

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