Prefabricated building steel column connecting structure

Abstract

The application provides a fabricated building steel column connecting structure for connecting a first steel column and a second steel column, comprising an external connecting component and an internal cable component, the external connecting component is sleeved on the outside of the connecting end of the first steel column and the second steel column, one end of the external connecting component is detachably connected with the first steel column, and the other end of the external connecting component is detachably connected with the second steel column; the internal cable component is arranged in the inside of the connecting end of the first steel column and the second steel column, one end of the internal cable component is clamped with the inside of the first steel column, and the other end of the internal cable component is clamped with the inside of the second steel column. The application has the beneficial effect of improving the connecting strength, so that the connecting end of the first steel column and the second steel column can bear larger load, can better meet the requirement of modern buildings on the structural bearing capacity, improves the integrity of the structure, avoids that the steel beam is locally stressed too much, reduces stress concentration, improves the bearing capacity and service life of the steel beam, reduces the vibration response of the structure, and greatly improves the stability of the structure in the earthquake.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology, and in particular relates to a prefabricated building steel column connection structure. Background Technology

[0002] With the development of the construction industry, prefabricated construction has become an important direction for promoting the sustainable development of the construction industry due to its advantages such as reducing on-site construction work, shortening the construction period, reducing noise pollution, and reducing the number of construction workers. In prefabricated building structures, steel column joint connections are a key link in ensuring the integrity and stability of the structure.

[0003] In existing technologies, steel column joint connections mainly employ fully welded connections, fully vertical bolted connections, and hybrid bolted-welded connections. These traditional connection structures are prone to stress concentration at the joints of the node components. For example, when rigid connection nodes of precast steel columns are subjected to vertical loads or horizontal seismic forces, localized high stresses can easily occur around the vertical bolt holes or at the weld edges. Under long-term loads, this may lead to fatigue failure, and under extreme conditions, even brittle fracture of the node. This makes the connection nodes of precast steel column structures prone to the phenomenon of "node failure preceding component failure" during earthquakes. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a prefabricated building steel column connection structure, which effectively solves the technical problems of stress concentration at the splicing points of node components in traditional connection structures, which may lead to fatigue failure under long-term loads, and even brittle fracture of nodes under extreme working conditions, thus overcoming the shortcomings of the prior art.

[0005] The technical solution adopted in this invention is: a prefabricated building steel column connection structure for connecting a first steel column and a second steel column, comprising:

[0006] An external connection component is sleeved on the outside of the connection end of the first steel column and the second steel column, with one end detachably connected to the first steel column and the other end detachably connected to the second steel column.

[0007] The internal cable assembly is located inside the connection end of the first steel column and the second steel column, with one end engaged with the inside of the first steel column and the other end engaged with the inside of the second steel column.

[0008] Furthermore, the first steel column is provided with a first flange on the outside of its connecting end, and the second steel column is provided with a second flange on the outside of its connecting end. The two ends of the external connecting assembly are detachably connected to the first flange and the second flange, respectively.

[0009] Furthermore, the external connection assembly includes a connecting cylinder, one end of which is provided with an upper wing plate, which is detachably connected to the first flange, and the other end of which is provided with a lower wing plate, which is detachably connected to the second flange.

[0010] Furthermore, a web is provided between the upper wing plate and the lower wing plate.

[0011] Furthermore, the internal cable assembly includes,

[0012] The first pull plate is installed inside the first steel column and engages with the interior of the first steel column.

[0013] The second pull plate is installed inside the second steel column and engages with the interior of the second steel column.

[0014] A steel cable is installed between the first and second tension plates.

[0015] Furthermore, the steel cable is provided with threaded joints at both ends, and the threaded joints are threadedly connected to the first pull plate and the second pull plate.

[0016] Furthermore, a tensioning assembly is provided between the connecting ends of the first steel column and the second steel column. One end of the tensioning assembly abuts against the end face of the first steel column, and the other end abuts against the end face of the second steel column.

[0017] Furthermore, the tensioning assembly includes,

[0018] The upper pressure plate abuts against the end face of the first steel column;

[0019] The lower pressure plate abuts against the end face of the second steel column;

[0020] A tension spring is disposed between the upper pressure plate and the lower pressure plate.

[0021] Furthermore, the tension spring is provided with an energy dissipation component on its outer periphery. The energy dissipation component includes an upper friction plate and a lower friction plate. The upper friction plate is disposed on the upper pressure plate, and the lower friction plate is disposed on the lower pressure plate. The upper and lower friction plates are arranged alternately.

[0022] Furthermore, a first steel beam and a second steel beam are respectively provided on both sides of the external connection component.

[0023] The advantages and positive effects of this invention are:

[0024] 1. By setting external connection components and internal cable components, the connection strength is improved, enabling the connection end of the first steel column and the second steel column to withstand greater loads, better meeting the requirements of modern buildings for structural bearing capacity, and suitable for building taller and more complex building structures.

[0025] 2. By setting up an elastic tensioning mechanism to keep the steel cables taut, the overall structure is improved, the stress state of the steel beam can be adjusted, excessive local stress on the steel beam is avoided, stress concentration is reduced, the load-bearing capacity of the nodes is further improved, and the load-bearing capacity and service life of the steel beam are increased.

[0026] 3. By setting up energy-dissipating components, the vibration energy under seismic action is effectively consumed, the vibration response of the structure is reduced, the stability of the structure during earthquakes is greatly improved, and the risk of the structure collapsing due to earthquake damage is reduced. Attached Figure Description

[0027] The above and other objects, features, and advantages of the present invention will become more apparent from the more detailed description of the embodiments of the invention in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same parts or steps.

[0028] Figure 1 This is an overall schematic diagram of a prefabricated building steel column connection structure according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of a tensioning component for a prefabricated building steel column connection structure according to an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the connection between a prefabricated building steel column connection structure and a steel beam according to an embodiment of the present invention.

[0031] In the diagram: 1. First steel column; 11. First flange; 2. Second steel column; 21. Second flange; 3. External connecting assembly; 31. Connecting cylinder; 32. Upper flange; 33. Lower flange; 34. Web plate; 4. Vertical connecting bolt; 5. Internal cable assembly; 51. First tension plate; 52. Second tension plate; 53. Steel cable; 6. Tensioning assembly; 61. Upper pressure plate; 62. Lower pressure plate; 63. Tensioning spring; 7. Energy dissipation assembly; 71. Upper friction plate; 72. Lower friction plate; 8. First steel beam; 9. Second steel beam; 10. Transverse connecting bolt. Detailed Implementation

[0032] This invention provides a prefabricated building steel column connection structure, and the embodiments of this invention will be described below with reference to the accompanying drawings.

[0033] In the description of the embodiments of this invention, it should be understood that the terms "top," "bottom," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0034] like Figure 1 As shown in the figure, an embodiment of the present invention provides a prefabricated building steel column connection structure, including an external connecting component 3 and an internal cable assembly 5, for connecting a first steel column 1 and a second steel column 2, with the first steel column 1 positioned above the second steel column 2. The external connecting component 3 is sleeved on the outside of the connection end between the first steel column 1 and the second steel column 2, with one end detachably connected to the first steel column 1 and the other end detachably connected to the second steel column 2. The internal cable assembly 5 is disposed inside the connection end between the first steel column 1 and the second steel column 2, with one end engaging with the inside of the first steel column 1 and the other end engaging with the inside of the second steel column 2. The connection strength is improved by providing connecting components both inside and outside the connection end between the first steel column 1 and the second steel column 2.

[0035] For ease of connection, a first flange 11 is welded to the outside of the connecting end of the first steel column 1, and a certain distance is provided between the first flange 11 and the end face of the first steel column 1. A second flange 21 is welded to the outside of the connecting end of the second steel column 2, and a certain distance is provided between the second flange 21 and the end face of the second steel column 2. The connecting ends of the first steel column 1 and the second steel column 2 can be respectively inserted into the external connecting assembly 3, so that the first flange 11 and the second flange 21 can be detachably connected to both ends of the external connecting assembly 3.

[0036] Specifically, the external connecting assembly 3 includes a connecting cylinder 31. One end of the connecting cylinder 31 is provided with an upper flange 32, which is detachably connected to the first flange 11. The other end of the connecting cylinder 31 is provided with a lower flange 33, which is detachably connected to the second flange 21. The shape of the connecting cylinder 31 is adapted to the shape of the first steel column 1 and the second steel column 2, and it is fitted onto the outside of the connection end of the first steel column 1 and the second steel column 2. The upper flange 32 is fixed to the upper end face of the connecting cylinder 31, and the lower flange 33 is fixed to the lower end face of the connecting cylinder 31. The upper flange 32 abuts against the first flange 11, and the lower flange 33 abuts against the second flange 21, and are fixedly connected by vertical connecting bolts 4.

[0037] Preferably, to improve the strength of the external connecting assembly 3, a web plate 34 is fixed between the upper wing plate 32 and the lower wing plate 33. The web plate 34 is perpendicular to the upper wing plate 32 and the lower wing plate 33.

[0038] Specifically, the internal cable assembly 5 includes a first pull plate 51, a second pull plate 52, and a steel cable 53. The first pull plate 51 is disposed inside the first steel column 1 and engages with the interior of the first steel column 1. The second pull plate 52 is disposed inside the second steel column 2 and engages with the interior of the second steel column 2. The steel cable 53 is disposed between the first pull plate 51 and the second pull plate 52. In this embodiment, a first groove is provided on the inner wall of the first steel column 1, and a protrusion-contact portion that mates with the first groove is provided on the edge of the first pull plate 51. A second groove is provided on the inner wall of the second steel column 2, and a protrusion-contact portion that mates with the second groove is provided on the edge of the second pull plate 52. The two ends of the steel cable 53 are respectively fixed to the first pull plate 51 and the second pull plate 52, and the steel cable 53 is parallel to the axial direction of the first steel column 1 and the second steel column 2.

[0039] Specifically, the steel cable 53 has threaded connectors at both ends, which are threadedly connected to the first pull plate 51 and the second pull plate 52. In this embodiment, the first pull plate 51 and the second pull plate 52 are respectively provided with threaded holes, and the two ends of the steel cable 53 are fixed with threaded connectors. The threaded connectors at both ends are threadedly connected to the corresponding threaded holes on the first pull plate 51 and the second pull plate 52, so that the two ends of the steel cable 53 are respectively fixed on the first pull plate 51 and the second pull plate 52.

[0040] Preferred, such as Figure 2 As shown, a gap is provided between the connecting ends of the first steel column 1 and the second steel column 2. A tensioning assembly 6 is installed within the gap. One end of the tensioning assembly 6 abuts against the end face of the first steel column 1, and the other end abuts against the end face of the second steel column 2. The tensioning assembly 6 includes an upper pressure plate 61, a lower pressure plate 62, and a tension spring 63. The upper pressure plate 61 abuts against the end face of the first steel column 1, and the lower pressure plate 62 abuts against the end face of the second steel column 2. The tension spring 63 is disposed between the upper pressure plate 61 and the lower pressure plate 62, with both ends connected to the upper pressure plate 61 and the lower pressure plate 62, respectively. Under the elastic force of the tension spring 63, the upper pressure plate 61 can abut against the lower end face of the first steel column 1, and the lower pressure plate 62 can abut against the upper end face of the second steel column 2. In this way, the steel cable 53 can always remain taut, which is beneficial for dispersing the stress at the connection between the first steel column 1 and the second steel column 2. When the vertical connecting bolt 4 is loosened, the steel cable 53 remains taut, which improves the stability of the connection between the first steel column 1 and the second steel column 2.

[0041] Preferably, the tension spring 63 is provided with an energy dissipation component 7 on its outer periphery. The energy dissipation component 7 includes an upper friction plate 71 and a lower friction plate 72. The upper friction plate 71 is disposed on the upper pressure plate 61, and the lower friction plate 72 is disposed on the lower pressure plate 62. The upper friction plate 71 and the lower friction plate 72 are staggered and can slide and rub against each other. In this embodiment, both the upper friction plate 71 and the lower friction plate 72 are made of metal sheets. The upper friction plate 71 is fixed to the bottom of the upper pressure plate 61 at intervals, and the lower friction plate 72 is fixed to the top of the lower pressure plate 62 at intervals. The upper friction plate 71 and the lower friction plate 72 generate friction through relative sliding to dissipate energy, further improving the energy dissipation capacity of the structure. Under moderate to strong earthquakes, the upper friction plate 71 and the lower friction plate 72 slide relative to each other, jointly absorbing and dissipating earthquake energy, significantly reducing the vibration response of the structure and preventing structural collapse.

[0042] Specifically, such as Figure 3 As shown, a first steel beam 8 and a second steel beam 9 are respectively provided on both sides of the external connecting component 3. In this embodiment, the first steel beam 8 is located on the left side of the external connecting component 3, and the second steel beam 9 is located on the right side of the external connecting component 3. The first steel beam 8 is connected to the upper wing plate 32 and the lower wing plate 33 by transverse connecting bolts 10, and the second steel beam 9 is connected to the upper wing plate 32 and the lower wing plate 33 by transverse connecting bolts 10, thereby realizing the connection between the steel column, the steel beam and the external connecting component 3.

[0043] The advantages and positive effects of this invention are:

[0044] 1. By setting external connection components and internal cable components, the connection strength is improved, enabling the connection end of the first steel column and the second steel column to withstand greater loads, better meeting the requirements of modern buildings for structural bearing capacity, and suitable for building taller and more complex building structures.

[0045] 2. By setting up an elastic tensioning mechanism to keep the steel cables taut, the overall structure is improved, the stress state of the steel beam can be adjusted, excessive local stress on the steel beam is avoided, stress concentration is reduced, the load-bearing capacity of the nodes is further improved, and the load-bearing capacity and service life of the steel beam are increased.

[0046] 3. By setting up energy-dissipating components, the vibration energy under seismic action is effectively consumed, the vibration response of the structure is reduced, the stability of the structure during earthquakes is greatly improved, and the risk of the structure collapsing due to earthquake damage is reduced.

[0047] The embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0048] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A prefabricated building steel column connection structure for connecting a first steel column and a second steel column, characterized in that: include, An external connection component is sleeved on the outside of the connection end of the first steel column and the second steel column, with one end detachably connected to the first steel column and the other end detachably connected to the second steel column. The internal cable assembly is located inside the connection end of the first steel column and the second steel column, with one end engaged with the inside of the first steel column and the other end engaged with the inside of the second steel column.

2. The prefabricated building steel column connection structure according to claim 1, characterized in that: The first steel column has a first flange on the outside of its connecting end, and the second steel column has a second flange on the outside of its connecting end. The two ends of the external connecting assembly are detachably connected to the first flange and the second flange, respectively.

3. The prefabricated building steel column connection structure according to claim 2, characterized in that: The external connection assembly includes a connecting cylinder, one end of which is provided with an upper wing plate, which is detachably connected to the first flange, and the other end of which is provided with a lower wing plate, which is detachably connected to the second flange.

4. The prefabricated building steel column connection structure according to claim 3, characterized in that: A web is provided between the upper wing plate and the lower wing plate.

5. A prefabricated building steel column connection structure according to any one of claims 1-4, characterized in that: The internal cable assembly includes, The first pull plate is installed inside the first steel column and engages with the interior of the first steel column. The second pull plate is installed inside the second steel column and engages with the interior of the second steel column. A steel cable is installed between the first and second tension plates.

6. The prefabricated building steel column connection structure according to claim 5, characterized in that: The steel cable is provided with threaded joints at both ends, and the threaded joints are threadedly connected to the first pull plate and the second pull plate.

7. A prefabricated building steel column connection structure according to any one of claims 1-4 and 6, characterized in that: A tensioning assembly is provided between the connecting ends of the first steel column and the second steel column. One end of the tensioning assembly abuts against the end face of the first steel column, and the other end abuts against the end face of the second steel column.

8. A prefabricated building steel column connection structure according to claim 7, characterized in that: The tensioning assembly includes, The upper pressure plate abuts against the end face of the first steel column; The lower pressure plate abuts against the end face of the second steel column; A tension spring is disposed between the upper pressure plate and the lower pressure plate.

9. A prefabricated building steel column connection structure according to claim 8, characterized in that: The tension spring is provided with an energy dissipation component on its outer periphery. The energy dissipation component includes an upper friction plate and a lower friction plate. The upper friction plate is disposed on the upper pressure plate, and the lower friction plate is disposed on the lower pressure plate. The upper and lower friction plates are arranged alternately.

10. A prefabricated building steel column connection structure according to any one of claims 1-4, 6 and 8-9, characterized in that: The external connection component is provided with a first steel beam and a second steel beam on both sides respectively.

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