Modular steel structure detachable connecting joint and steel structure detachable frame structure system
By using a modular steel structure with detachable connection nodes and a fully bolted assembly design, the high cost and non-detachability issues of existing steel structure welding construction are solved, achieving fast, stable, and detachable connection nodes that support flexible building adjustments and resource recycling.
Patent Information
- Application Number
- CN202522604802.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-09
AI Technical Summary
Existing steel structure connection nodes rely on welding during construction, resulting in high construction costs and high technical barriers. Furthermore, their non-removability leads to resource waste and environmental pollution, making it difficult to meet the needs of changes in building functions and spatial reconstruction.
The modular steel structure with detachable connection nodes is adopted. The vertical socket section of the hollow connection node body cooperates with the steel column. The operation channel is provided by the operation hole, realizing full bolt assembly, replacing on-site welding. The double-layer pipe wall structure formed by the inner and outer pipes improves rigidity and load-bearing capacity.
It enables rapid assembly and disassembly, lowers the technical threshold for construction, reduces resource waste, conforms to the concept of green building, improves the stability and disassembly of connection nodes, and supports changes in building function and spatial reconstruction.
Smart Images
Figure CN224931167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building steel structure technology, specifically to a modular steel structure detachable connection node and a steel structure detachable frame structure system. Background Technology
[0002] Currently, steel structures are widely used in the construction industry. With their significant advantages such as high strength, light weight, and short construction period, steel structures are widely used in various construction projects. However, as the construction industry's demands for sustainable development, flexible space utilization, and rapid construction continue to grow, existing steel structure connection node designs and structural systems have revealed many shortcomings in engineering applications.
[0003] In current practical engineering applications of steel structure joints, welding or a hybrid of bolted and welded connections are commonly used. Although welded connections can provide high joint stiffness and overall stability, they have significant drawbacks during engineering implementation. First, on-site welding operations have extremely stringent environmental requirements; humidity, temperature, and other environmental factors significantly affect weld quality. Furthermore, the welding process relies on specialized welding equipment and experienced technicians, increasing construction costs and technical barriers. Simultaneously, the high-temperature heat input generated during welding can easily lead to localized changes in the steel's properties, creating residual stress and thus reducing the overall performance of the structure. More importantly, welding is an irreversible, permanent connection; once completed, subsequent adjustments and disassembly of the joint become extremely difficult. This non-removability not only hinders building renovation and maintenance but also impedes the recycling and reuse of components, making it particularly detrimental in terms of resource conservation and environmental protection.
[0004] Existing steel frame systems are mostly fixed and integrated designs, making it difficult to flexibly disassemble and reassemble them according to changes in building function and spatial layout. When the building's use changes and the interior space needs to be replanned, traditional steel frames often cannot meet the needs of spatial reconstruction, requiring complete demolition and reconstruction, resulting in significant resource waste and construction waste, which runs counter to the current concepts of green building and sustainable development. Against the backdrop of increasingly diversified demands in the construction market and accelerated upgrades in building functions, there is an urgent need for a simpler, more efficient steel structure system with good disassembly and modular characteristics to solve the dilemmas of existing technologies in engineering applications and promote the construction industry towards a greener, more efficient, and intelligent direction. Utility Model Content
[0005] The purpose of this utility model is to provide a modular steel structure detachable connection node and a steel structure detachable frame structure system, so as to solve the technical problem of realizing the rapid assembly and disassembly of steel structure components.
[0006] Firstly, a modular steel structure detachable connection node is provided, comprising: a hollow connection node body, at least one end of which is provided with a vertical socket section; a first mounting hole, arranged on the side of the hollow connection node body and located within the vertical socket section; a second mounting hole, arranged on the side of the hollow connection node body and located outside the vertical socket section; and an operating hole, arranged on the side of the hollow connection node body and located within or outside the vertical socket section; in use, the vertical socket section is plugged into a corresponding socket end of a steel column, and the first mounting hole... After the socket connection, the first mounting hole is aligned with the steel column side mounting hole on the side of the steel column and connected by a bolt structure. The second mounting hole is aligned with the steel beam side mounting hole at the end of a steel beam and connected by a bolt structure. The operating hole forms an operating channel for bolting the first mounting hole with the steel column side mounting hole and bolting the second mounting hole with the steel beam side mounting hole. When the operating hole is located within the vertical socket section, the operating hole is aligned with the steel column side operating hole on the side of the steel column after the socket connection to form the operating channel.
[0007] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: the hollow connection node body is formed by welding and fixing an inner tube and an outer tube sleeved outside the inner tube; the length of the inner tube is greater than the length of the outer tube, and the part of the inner tube extending out of the outer tube forms the vertical socket section; the area where the inner tube and the outer tube overlap forms a double-wall structure, and the second mounting hole is arranged on the side of the double-wall structure.
[0008] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: a ring of ribs is welded at the interface where the inner tube and the outer tube are sleeved; the ribs are arranged around the outer wall of the inner tube and abut against the end of the outer tube to transmit the axial force of the steel column.
[0009] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: both the upper and lower ends of the inner tube extend out of the outer tube, forming an upper vertical socket section and a lower vertical socket section respectively; the first mounting hole and the operating hole are respectively provided on the side of the upper vertical socket section and the side of the lower vertical socket section.
[0010] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: the inner tube extends only from the lower end of the outer tube to form a lower vertical socket section; the lower vertical socket section is provided with the first mounting hole and the operation hole on its side; the upper end of the hollow connection node body is sealed.
[0011] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: the upper end of the hollow connection node body is also provided with a reserved short pipe with a size smaller than the inner tube, and the reserved short pipe is used to connect with the parapet wall column.
[0012] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: the horizontal cross-section of the hollow connection node body is rectangular; the hollow connection node body has at least two cylindrical surfaces respectively provided with the first mounting hole, the second mounting hole and the operation hole.
[0013] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: in the at least two cylindrical surfaces, the operating hole on any cylindrical surface is located at the center of the width of the cylindrical surface, there are multiple first mounting holes on any cylindrical surface and they are distributed around the corresponding operating hole, and there are multiple second mounting holes on any cylindrical surface and they are arranged above or below the corresponding operating hole.
[0014] As an optimization and / or instantiation of the above-mentioned modular steel structure detachable connection node, further: the bolt structure includes a bolt, an anti-loosening washer, and a self-locking nut; the self-locking nut is located inside the hollow connection node body.
[0015] Secondly, a detachable steel frame structure system is provided, comprising: multiple modular detachable steel structure connection nodes as described in the first aspect; multiple steel columns, each steel column having an end that mates with a vertical socket section corresponding to the modular detachable steel structure connection node, the side of each steel column having a steel column side mounting hole corresponding to a first mounting hole of the modular detachable steel structure connection node, the first mounting hole being aligned with the steel column side mounting hole and connected by a bolt structure; and multiple steel beams, each steel beam having an end plate, the end plate having a steel beam side mounting hole corresponding to a second mounting hole of the modular detachable steel structure connection node, the second mounting hole being aligned with the steel beam side mounting hole and connected by a bolt structure.
[0016] The beneficial effects of this utility model are as follows:
[0017] First, this utility model uses the vertical socket section of the hollow connecting node body to engage with the steel column. By utilizing the operating channel provided by the operating hole, the first and second mounting holes are connected to the steel column and steel beam respectively through bolt structure. This all-bolt assembly method completely replaces on-site welding, giving the node excellent disassembly, which facilitates the later renovation and maintenance of the building, as well as the recycling and reuse of components, and conforms to the concept of green building.
[0018] Secondly, the modular steel structure's detachable connection nodes avoid the high-temperature heat input generated by on-site welding, eliminate residual stress and local performance changes caused by welding, and ensure that the construction quality is not affected by environmental humidity and temperature. At the same time, the design of the operating holes cleverly solves the problem of difficult bolt installation inside the closed section, lowers the technical threshold for construction, and significantly improves assembly efficiency.
[0019] Third, in the optimal design of the hollow connection node body, the double-wall structure formed by the inner and outer tubes significantly improves the stiffness and load-bearing capacity of the node core area. Combined with the ribs at the interface between the inner and outer tubes, it can effectively transmit the axial force of the steel column, ensuring the overall stability and safety of the connection node.
[0020] Fourth, the steel structure frame system based on modular steel structure detachable connection nodes has a high degree of modularity. It can flexibly adjust the spatial layout according to changes in building function, meet the needs of spatial reconstruction, solve the problem of resource waste caused by the traditional steel structure that can only be completely demolished and rebuilt, and promote the development of the construction industry towards efficiency and intelligence.
[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages provided by the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice. Attached Figure Description
[0022] The accompanying drawings, which form part of this specification, are used to aid in understanding the present invention. The contents provided in the drawings and their related descriptions in this specification can be used to explain the present invention, but do not constitute an undue limitation on the present invention.
[0023] Figure 1 This is a structural schematic diagram of a steel structure detachable frame structure system according to an embodiment of this application.
[0024] Figure 2 for Figure 1 A schematic diagram of a partial assembly of a frame structure system with detachable steel structure.
[0025] Figure 3 for Figure 2 A structural schematic diagram of a modular steel structure with a detachable connection node (middle layer).
[0026] Figure 4 This is a structural diagram of the detachable connection node of the further improved modular steel structure.
[0027] Figure 5 for Figure 2 A schematic diagram of a modular steel structure with a detachable connection node (upper layer).
[0028] The markings in the diagram are: foundation 1, embedded part 2, steel column 3, steel beam 4, modular steel structure detachable connection node 5, hollow connection node body 51, inner pipe 511, outer pipe 512, first mounting hole 513, second mounting hole 514, operating hole 515, reserved short pipe 516, and rib plate 517. Detailed Implementation
[0029] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:
[0030] The technical solutions and features provided in the various sections, including the following description, can be combined with each other without conflict. Furthermore, where possible, these technical solutions, features, and related combinations can be given specific technical subject matter and protected by relevant patents.
[0031] The embodiments of the present invention described below are generally only some embodiments and not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of patent protection.
[0032] The terms "comprising," "including," "having," and any variations thereof in this specification, the corresponding claims, and related sections are intended to cover non-exclusive inclusion. Other related terms and units can be reasonably interpreted based on the relevant content provided in this specification.
[0033] Combination Figure 1 and Figure 2 This utility model provides a detachable steel frame structure system, which is mainly assembled from multiple modular detachable steel connection nodes 5, multiple steel columns 3, and multiple steel beams 4. Each steel column 3 has a socket end designed to mate with the vertical socket section of the modular detachable steel connection node 5. The side of each steel column 3 has mounting holes corresponding to the first mounting holes 513 of the modular detachable steel connection node 5. Each steel beam 4 has an end plate with mounting holes corresponding to the second mounting holes 514 of the modular detachable steel connection node 5. During assembly, the first mounting holes 513 are aligned with the steel column mounting holes and connected by bolts, and the second mounting holes 514 are aligned with the steel beam mounting holes and connected by bolts. The bolt structure includes bolts, anti-loosening washers, and self-locking nuts, with the self-locking nuts located inside the hollow connection node body 51.
[0034] like Figure 3 and Figure 4 As shown, as an implementation method applied to intermediate floors, the modular steel structure detachable connection node 5 includes a hollow connection node body 51. This hollow connection node body 51 is welded and fixed by an inner tube 511 and an outer tube 512 sleeved outside the inner tube 511. The length of the inner tube 511 is greater than the length of the outer tube 512, and both the upper and lower ends of the inner tube 511 extend beyond the outer tube 512, forming an upper vertical socket section and a lower vertical socket section respectively. A double-walled structure is formed in the area where the inner tube 511 and the outer tube 512 overlap. A second mounting hole 514 is arranged on the side of this double-walled structure for connecting the steel beam 4. A first mounting hole 513 and an operating hole 515 are correspondingly provided on the side of both the upper and lower vertical socket sections. To effectively transmit the axial force of the steel column 3, a ring of ribs 517 (e.g., ...) is welded at the interface where the inner tube 511 and the outer tube 512 are sleeved. Figure 4 As shown, the rib 517 surrounds the outer wall of the inner tube 511 and abuts against the end of the outer tube 512. The horizontal cross-sectional shape of the hollow connecting node body 51 is rectangular, and each of its four cylindrical surfaces is provided with a first mounting hole 513, a second mounting hole 514, and an operating hole 515. Among them, the operating hole 515 is located at the center of the width of the cylindrical surface, there are multiple first mounting holes 513 distributed around the corresponding operating hole 515, and there are multiple second mounting holes 514 arranged above or below the corresponding operating hole 515.
[0035] like Figure 5 As shown, in one implementation for the top floor, the inner tube 511 of the hollow connecting node body 51 extends only from the lower end of the outer tube 512, forming a lower vertical socket section. A first mounting hole 513 and an operating hole 515 are correspondingly provided on the side of this lower vertical socket section. The upper end of the hollow connecting node body 51 is sealed, and a reserved short tube 516, smaller than the inner tube 511, is provided on this seal. This reserved short tube 516 is used to connect to the parapet wall column. In this embodiment, the second mounting hole 514 is still arranged on the side of the double-walled structure formed by the overlap of the inner tube 511 and the outer tube 512, and is used to connect the top-floor steel beam 4.
[0036] The specific connection and operation principle is as follows: During use, the vertical socket section of the hollow connecting node body 51 is socketed with the corresponding socket end of the steel column 3. When the vertical socket section is inserted into the steel column 3 or the steel column 3 is fitted into the vertical socket section, the operating hole 515 (when located inside the vertical socket section) will align with the operating hole on the side of the steel column 3, thus forming an operating channel connecting the inside and outside of the node. Using this operating channel, construction personnel can insert tools into the hollow connecting node body 51 and, in conjunction with external tools, complete the bolt tightening operations of the first mounting hole 513 with the mounting hole on the side of the steel column, and the bolt tightening operations of the second mounting hole 514 with the mounting hole on the end plate of the steel beam 4. This design ensures convenient installation and removal of self-locking nuts even inside a closed tubular section, achieving a fully bolted connection and avoiding on-site welding.
[0037] It should be noted that, according to Figures 1-2 As shown, a pre-embedded part 2 with the same structure and function as the hollow connection node body 51 is embedded in the foundation 1, which is used to connect with the steel column 3 above.
[0038] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the foregoing content of this specification without inventive effort should fall within the scope of this utility model.
Claims
1. A modular steel structure detachable connection node, characterized in that: include: A hollow connecting node body, wherein at least one end of the hollow connecting node body is provided with a vertical socket section; The first mounting hole is arranged on the side of the hollow connecting node body and located inside the vertical socket section; The second mounting hole is arranged on the side of the hollow connecting node body and is located outside the vertical socket section; The operating hole is arranged on the side of the hollow connecting node body and is located inside or outside the vertical socket section; In use, the vertical socket section is socketed and connected to the corresponding socket end of a steel column. After the socket connection, the first mounting hole is aligned with the steel column side mounting hole on the side of the steel column and connected by a bolt structure. The second mounting hole is aligned with the steel beam side mounting hole at the end of a steel beam and connected by a bolt structure. The operating hole forms an operating channel for bolting the first mounting hole to the mounting hole on the side of the steel column and for bolting the second mounting hole to the mounting hole on the side of the steel beam. When the operating hole is located within the vertical socket section, the operating hole is aligned with the operating hole on the side of the steel column after the socket connection to form the operating channel.
2. The modular steel structure detachable connection node as described in claim 1, characterized in that: The hollow connecting node body is formed by welding and fixing an inner tube and an outer tube sleeved outside the inner tube; the length of the inner tube is greater than the length of the outer tube, and the part of the inner tube extending out of the outer tube forms the vertical socket section; the area where the inner tube and the outer tube overlap forms a double-wall structure, and the second mounting hole is arranged on the side of the double-wall structure.
3. The modular steel structure detachable connection node as described in claim 2, characterized in that: A ring of ribs is welded at the interface where the inner tube and the outer tube are sleeved; the ribs are arranged around the outer wall of the inner tube and abut against the end of the outer tube to transmit the axial force of the steel column.
4. The modular steel structure detachable connection node as described in claim 2, characterized in that: The inner tube extends out of the outer tube at both the upper and lower ends, forming an upper vertical socket section and a lower vertical socket section respectively; the first mounting hole and the operating hole are respectively provided on the side of the upper vertical socket section and the side of the lower vertical socket section.
5. The modular steel structure detachable connection node as described in claim 2, characterized in that: The inner tube extends only from the lower end of the outer tube, forming a lower vertical socket section; the first mounting hole and the operating hole are correspondingly provided on the side of the lower vertical socket section; the upper end of the hollow connecting node body is sealed.
6. The modular steel structure detachable connection node as described in claim 5, characterized in that: The upper end of the hollow connecting node body is also provided with a reserved short pipe with a size smaller than the inner tube, which is used to connect with the parapet wall column.
7. The modular steel structure detachable connection node as described in any one of claims 1-6, characterized in that: The horizontal cross-section of the hollow connecting node body is rectangular; the hollow connecting node body has at least two cylindrical surfaces respectively provided with the first mounting hole, the second mounting hole and the operation hole.
8. The modular steel structure detachable connection node as described in claim 7, characterized in that: In the at least two cylindrical surfaces, the operating hole on any cylindrical surface is located at the center of the width of the cylindrical surface, there are multiple first mounting holes on any cylindrical surface and they are distributed around the corresponding operating hole, and there are multiple second mounting holes on any cylindrical surface and they are arranged above or below the corresponding operating hole.
9. The modular steel structure detachable connection node as described in any one of claims 1-6, characterized in that: The bolt structure includes a bolt, a locking washer, and a self-locking nut; the self-locking nut is located inside the hollow connecting node body.
10. A steel-framed structural system with detachable design, characterized in that: include: Multiple modular steel structure detachable connection nodes as described in any one of claims 1-9; Multiple steel columns, each steel column having a socket end that mates with a vertical socket section corresponding to the detachable connection node of the modular steel structure. The side of the steel column has a steel column side mounting hole corresponding to the first mounting hole of the detachable connection node of the modular steel structure. The first mounting hole is aligned with the steel column side mounting hole on the side of the steel column and connected by a bolt structure. Multiple steel beams, each with an end plate at its end. The end plate has a steel beam side mounting hole corresponding to the second mounting hole of the modular steel structure detachable connection node. The second mounting hole is aligned with the steel beam side mounting hole and connected by a bolt structure.