Prefabricated steel reinforced concrete column connecting joint
By adopting structures such as upper steel bones, lower steel bones, stiffener plates, connecting end plates and connectors in the precast concrete column connection node, combined with welding and nut thread connection technology, the construction difficulty of existing precast concrete column connection and The connection strength problem has achieved a fast and stable connection effect.
Patent Information
- Application Number
- CN202411821185.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-02-11
AI Technical Summary
When connecting existing precast concrete columns, there are problems such as difficult construction, slow connection strength formation, complex operation and long construction cycle.
Prefabricated steel concrete columns are used to connect nodes, including upper steel bones, lower steel bones, upper stiffener plates, upper connecting end plates, lower connecting end plates, connectors and cast-in-place concrete, and quickly position and fix them through welding and nut threaded connections.
It realizes the rapid connection and fixation of two steel bone columns in the vertical direction without special positioning, which reduces construction difficulty, improves construction efficiency, and enhances connection strength and structural stability.
Smart Images
Figure CN119411702A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of prefabricated assembled buildings in construction engineering technology, and in particular to a prefabricated steel concrete column connection node. Background Art
[0002] At present, the prefabricated structural columns in the field of prefabricated and assembled buildings in construction engineering technology are mainly divided into steel structural columns and prefabricated concrete columns. Prefabricated steel-concrete columns have the advantages of both steel structural columns and concrete columns. The commonly used cross-sections of medium-shaped steel in steel-concrete columns are cross-shaped, square tube-shaped and H-shaped.
[0003] The prefabricated steel structure columns in the related art have good integrity, are easy to connect, quickly form connection strength, and can achieve support-free connection. However, the prefabricated concrete columns in the related art have strong bearing capacity, but they are heavy, difficult to assemble and connect, and slowly form connection strength. They often require formwork and support, and have complex operations and long construction periods. Therefore, there is room for improvement. Summary of the invention
[0004] In order to reduce construction difficulty and improve work efficiency, the present application provides a prefabricated steel-concrete column connection node.
[0005] The prefabricated steel-concrete column connection node provided in this application adopts the following technical solution: A prefabricated steel-concrete column connection node, characterized in that it comprises: The upper steel frame and the lower steel frame are filled with cast-in concrete, and the upper steel frame and the lower steel frame are wrapped with cast-in concrete through a mold; An upper stiffening plate, wherein a plurality of upper stiffening plates are symmetrically arranged on the outer side wall of the upper steel frame and at the bottom end, the upper stiffening plates are fixedly connected to the upper steel frame by welding, and the top end of the upper stiffening plates is located in the externally poured concrete; An upper connecting end plate, the upper connecting end plate is horizontally arranged at the bottom end of the upper stiffening plate, the upper connecting end plate and the upper stiffening plate are fixed to each other by welding, a connecting hole for the lower steel frame to pass through is opened at the center of the upper connecting end plate, the connecting hole and the lower steel frame are adapted to each other, the lower steel frame passes through the connecting hole and is welded and fixed to the upper steel frame, and the upper stiffening plate and the side wall of the lower steel frame are welded and fixed to each other; A lower connecting end plate, the lower connecting end plate is fixedly arranged on the outer side wall of the lower steel frame by welding, the lower connecting end plate is aligned with the upper connecting end plate and the surfaces are flush, and the lower connecting end plate is fixed to the end wall of the cast-in-place concrete on the lower steel frame by pouring, and the lower steel frame protrudes from the lower connecting end plate; A connecting member, the connecting member is arranged between the upper connecting end plate and the lower connecting end plate, and the connecting member is used to connect and fix the upper connecting end plate and the lower connecting end plate; Cast-in-place concrete is fixed between two external cast-in-place concretes by pouring on site.
[0006] By adopting the above technical scheme, when the steel column connection node is cast and prefabricated in the factory, the upper stiffening plate and the outer wall of the upper steel frame are welded and fixed to each other, and then the upper connection end plate is welded and fixed to the bottom end of the upper stiffening plate. At this time, there is a certain distance between the upper connection end plate and the bottom end of the upper steel frame, and the cast-in concrete and the cast-out concrete are poured inside and outside the upper steel frame; the lower connection end plate is fixed on the outer wall of the lower steel frame by welding, and the cast-in concrete and the cast-out concrete are poured inside and outside the lower steel frame; during on-site construction, the upper steel frame is vertically lifted to the top of the lower steel frame. After the upper steel frame is vertically lowered, the end of the lower steel frame protruding from the lower connection end plate can pass through the connection hole. At this time, the side wall of the lower steel frame is against the inner wall of the connection hole, and at the same time, the top end of the lower steel frame and the bottom end of the upper steel frame fit together, and the surfaces of the upper connection end plate and the lower connection end plate fit together; then the upper connection end plate and the lower connection are connected by connecting parts The end plate brackets are connected and fixed to each other, and a welding gun is used to penetrate between adjacent upper stiffening plates to weld and fix the lower steel frame to the upper steel frame, and weld and fix the upper stiffening plate to the side wall of the lower steel frame to each other; finally, cast-in-place concrete is poured on site, and the cast-in-place concrete is poured between the externally cast concrete, and the cast-in-place concrete seals the upper connecting end plate, the lower connecting end plate and the connecting parts; thereby, the two steel frame columns are quickly connected and fixed to each other in the vertical direction, and the connection can be successfully positioned without special positioning, with low construction difficulty, which is conducive to improving on-site construction efficiency. At the same time, the connection strength between the two steel frame columns is enhanced by connecting parts and welding technology, thereby enhancing the stability of the connection node structure, and at the same time ensuring the anti-corrosion and fire-proof performance and appearance of the component; the lower steel frame is extended upward by a certain length to facilitate the welding of the upper and lower steel frames, and at the same time it can also assist in positioning the upper and lower columns and improve assembly accuracy.
[0007] Preferably, the connecting member includes a screw and a nut, wherein a plurality of the screws are symmetrically arranged on the lower connecting end plate, and a bolt hole for the screws to pass through is provided on the upper connecting end plate, and the nut is threadedly connected to the screw, and the nut abuts against the surface of the upper connecting end plate; the screw is fixed to the poured concrete on the lower steel frame after casting.
[0008] By adopting the above technical solution, when the lower steel frame is inserted into the connecting hole, the screw rod passes through the bolt hole, and after the surfaces of the upper connecting end plate and the lower connecting end plate fit together, the nut is threadedly connected to the screw rod, and several nuts are simultaneously abutted against the surface of the upper connecting end plate, so that the upper connecting end plate and the lower connecting end plate are quickly and effectively connected and fixed.
[0009] Preferably, a beam connecting plate is further included, which is symmetrically arranged on the outer side wall of the lower steel frame, the side end of the beam connecting plate is welded and fixed to the lower steel frame, and the top end of the beam connecting plate is welded and fixed to the lower connecting end plate.
[0010] By adopting the above technical solution, the beam connecting plate is used to connect the crossbar on the side wall of the lower steel frame. At the same time, the beam connecting plate supports the bottom end of the lower connecting end plate, which can increase the stress level of the lower connecting end plate and ensure the bearing capacity of the component.
[0011] Preferably, a support plate is further included, which is fixed on the outer wall of the lower steel frame by welding, and the bottom end of the beam connecting plate is fixed to the surface of the support plate.
[0012] By adopting the above technical solution, the support plate is used to support the beam connection plate. After the beam connection plate is connected to the beam-column, the support plate effectively improves the stability and bearing capacity of the beam connection plate, which is beneficial to enhancing the strength and applicability of the steel column connection node.
[0013] Preferably, a load-bearing plate is provided in the lower steel frame, the load-bearing plate and the support plate are flush with each other, and the end wall of the load-bearing plate and the inner wall of the lower steel frame are fixed to each other by welding.
[0014] By adopting the above technical solution, the load-bearing plate is fixed to each other by welding inside the lower steel frame and between the inner wall of the lower steel frame. Since the load-bearing plate and the supporting plate are flush with each other, the lower steel frame is not easy to bend when the supporting plate is subjected to force, which is beneficial to improving the strength and service life of the lower steel frame.
[0015] Preferably, it also includes a lower stiffening plate and lower stress-bearing steel bars, the side ends of the lower stiffening plate are fixed to the side walls of the lower steel frame by welding, the top end of the lower stiffening plate is fixed to the bottom wall of the support plate by welding, the lower stress-bearing steel bars are fixed in the poured concrete on the lower steel frame by pouring, and the lower stress-bearing steel bars and the side walls of the lower stiffening plate are fixed to each other by welding.
[0016] By adopting the above technical scheme, before pouring the steel frame column, the lower stiffening plate and the side wall of the lower steel frame are welded to each other, and the top of the lower stiffening plate and the bottom wall of the support plate are fixed by welding, and a number of lower stress-bearing steel bars are welded and fixed to the side wall of the lower stiffening plate. On the one hand, the lower stiffening plate improves the stability of the lower stress-bearing steel bars, and at the same time, the lower stiffening plate supports the support plate, further enhancing the bearing capacity of the beam connection plate, providing temporary strength for the prefabricated column before the connection is completed, ensuring the continuous progress of subsequent work, and preventing all connecting welds from being in the same plane, which not only ensures strength, but also makes the connection simpler.
[0017] Preferably, a plurality of connecting tubes are fixedly provided at the bottom end of the lower connecting end plate by welding, the lower stress-bearing steel bars at the top corners penetrate the supporting plate and are inserted into the connecting tubes, and the ends of the lower stress-bearing steel bars are fixed to the inner wall of the connecting tubes by threads.
[0018] By adopting the above technical solution, before pouring the steel column, the lower stress-bearing steel bar passes through the reserved hole on the support plate and enters the connecting tube, and the end of the stress-bearing steel bar and the inner wall of the connecting tube are fixed to each other by welding, causing the concentration of connection stress and improving the connection reliability.
[0019] Preferably, the surface of the beam connecting plate is provided with a plurality of air holes and steel bar reserved holes, the steel bar reserved holes are penetrated with reinforcing steel bars, a plurality of reinforcing steel bars are provided, and the reinforcing steel bars are fixed to the inner wall of the steel bar reserved holes by welding.
[0020] By adopting the above technical scheme, the air holes are conducive to the pouring of steel column. During pouring, the reinforcing steel bars are passed through the reserved holes for the steel bars, and the reinforcing steel bars and the inner walls of the reserved holes for the steel bars are fixed to each other by welding. The reinforcing steel bars connect the adjacent beam connecting plates, which is conducive to sharing the force of a single beam connecting plate and improving the connection strength between the beam connecting plates.
[0021] Preferably, upper stress-bearing steel bars are further included, and the upper stress-bearing steel bars are fixed in the cast-in-place concrete on the upper steel frame by pouring, and the upper stress-bearing steel bars and the side wall of the upper stiffening plate are fixed to each other by welding.
[0022] By adopting the above technical solution, when pouring the steel column, the upper stress-bearing steel bars and the side walls of the upper stiffening plate are fixed to each other by welding, which not only ensures the strength but also makes the connection simpler.
[0023] In summary, the present application includes at least one of the following beneficial technical effects: By setting the upper steel frame, the lower steel frame, the upper stiffening plate, the upper connection end plate, the lower connection end plate, the connectors and cast-in-place concrete, the two steel frame columns can be quickly connected and fixed to each other in the vertical direction. No special positioning is required, and the connection can be successfully positioned and completed. The construction difficulty is small, which is conducive to improving the efficiency of on-site construction. At the same time, the connectors and welding process are used to enhance the connection strength between the two steel frame columns, thereby enhancing the stability of the connection node structure, while ensuring the anti-corrosion and fireproof performance of the components and the appearance of the appearance; the lower steel frame is extended upward by a certain length to facilitate the welding of the upper and lower steel frames, and it can also assist in the positioning of the upper and lower columns to improve the assembly accuracy; By setting screws and nuts, when the lower steel frame is inserted into the connection hole, the screw passes through the bolt hole, and after the surfaces of the upper connection end plate and the lower connection end plate are fitted to each other, the nut is threadedly connected to the screw, and several nuts abut against the surface of the upper connection end plate at the same time, so that the upper connection end plate and the lower connection end plate are connected and fixed quickly and effectively; By arranging beam connection plates, support plates and load-bearing plates, the beam connection plates are used to connect the crossbars on the side walls of the lower steel frames, and at the same time, the beam connection plates support the bottom ends of the lower connection end plates, which can increase the stress degree of the lower connection end plates. The support plates effectively improve the stability and bearing capacity of the beam connection plates, which is beneficial to enhancing the strength and applicability of the steel frame column connection nodes. The load-bearing plates are fixed to each other by welding between the inner side walls of the lower steel frames. Since the load-bearing plates and the support plates are flush with each other, the lower steel frames are not prone to bending when the support plates are subjected to stress, which is beneficial to improving the strength and service life of the lower steel frames. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of a prefabricated steel-concrete column connection node provided in an embodiment of the present application.
[0025] Figure 2 This is a partial diagram of a prefabricated steel-concrete column connection node provided in an embodiment of the present application.
[0026] Figure 3 It is a cross-sectional view of a prefabricated steel-concrete column connection node provided in an embodiment of the present application.
[0027] Figure 4 It is a schematic diagram for illustrating the upper steel frame in the embodiment of the present application.
[0028] Figure 5 It is a schematic diagram for illustrating the lower steel frame in the embodiment of the present application.
[0029] Explanation of the reference numerals: 11, upper steel frame; 12, lower steel frame; 21, cast-in-place concrete; 22, cast-out concrete; 31, upper stiffening plate; 311, welding hole; 32, lower stiffening plate; 321, lower stress-bearing steel bar; 41, upper connecting end plate; 411, connecting hole; 412, bolt hole; 42, lower connecting end plate; 5, connecting piece; 51, screw rod; 52, nut; 6, cast-in-place concrete; 7, beam connecting plate; 71, support plate; 72, stress-bearing plate; 8, connecting tube; 91, air vent; 92, reserved hole for steel bar; 921, reinforcing steel bar; 10, upper stress-bearing steel bar. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-5 This application is described in further detail.
[0031] The present application embodiment discloses a prefabricated steel-concrete column connection node, which is suitable for connecting two prefabricated concrete steel frame columns. Figure 1 and Figure 2 It includes an upper steel frame 11 and a lower steel frame 12. The steel frame is not limited to a box shape and an I shape. The interior of the upper steel frame 11 and the lower steel frame 12 are filled with cast-in concrete 21. The outside of the upper steel frame 11 and the lower steel frame 12 are wrapped with cast-in concrete 22 through a mold. The ends of the upper steel frame 11 and the lower steel frame 12 protrude from the cast-in concrete 22.
[0032] Reference Figures 2 to 4 , and also includes an upper stiffening plate 31 and an upper stress-bearing steel bar 10. A plurality of upper stiffening plates 31 are symmetrically arranged on the outer side wall of the upper steel frame 11 and at the bottom end. The length direction of the upper stiffening plates 31 is arranged along the length direction of the upper steel frame 11. In the embodiment of the present application, two upper stiffening plates 31 are symmetrically arranged on each side wall of the upper steel frame 11. There is a certain spacing between adjacent upper stiffening plates 31. The upper stiffening plates 31 are welded and fixedly connected to the upper steel frame 11. The top of the upper stiffening plate 31 is located in the externally cast concrete 22. The upper stress-bearing steel bar 10 is fixed in the externally cast concrete 22 on the upper steel frame 11 by pouring. The length direction of the upper stress-bearing steel bar 10 is arranged along the length direction of the upper steel frame 11. The upper stress-bearing steel bars 10 are tied together by ties. When the steel frame column is poured, the upper stress-bearing steel bar 10 and the side wall of the upper stiffening plate 31 are fixed to each other by welding, which not only ensures strength but also makes the connection simpler.
[0033] Reference Figures 2 to 4 , and also includes an upper connection end plate 41, which is horizontally arranged at the bottom end of the upper stiffening plate 31, and there is a certain distance between the upper connection end plate 41 and the upper steel frame 11. The upper connection end plate 41 and the upper stiffening plate 31 are fixed to each other by welding. A connection hole 411 for the lower steel frame 12 to pass through is opened at the center of the upper connection end plate 41, and the connection hole 411 is adapted to the lower steel frame 12. When the steel frame column connection node is cast and prefabricated in the factory, the upper stiffening plate 31 and the outer wall of the upper steel frame 11 are welded and fixed to each other, and then the upper connection end plate 41 is welded and fixed to the bottom end of the upper stiffening plate 31. At this time, there is a certain distance between the upper connection end plate 41 and the bottom end of the upper steel frame 11, and the cast-in concrete 21 and the cast-out concrete 22 are cast inside and outside the upper steel frame 11.
[0034] Reference Figure 2 and Figure 5, and further includes a lower connection end plate 42, which is fixedly arranged on the outer side wall of the lower steel frame 12 by welding, and the lower connection end plate 42 is fixed to the end wall of the externally cast concrete 22 on the lower steel frame 12 by pouring, and the lower steel frame 12 protrudes from the lower connection end plate 42. When the steel frame column connection node is cast and prefabricated in the factory, the lower connection end plate 42 is fixedly arranged on the outer side wall of the lower steel frame 12 by welding, and the internally cast concrete 21 and the externally cast concrete 22 are poured inside and outside the lower steel frame 12.
[0035] Reference Figures 1 to 3 , and also includes a connecting member 5 and cast-in-place concrete 6. The connecting member 5 is arranged between the upper connecting end plate 41 and the lower connecting end plate 42, and the cast-in-place concrete 6 is arranged between the two external cast concretes 22. During on-site construction, the upper steel frame 11 is vertically lifted above the lower steel frame 12. After the upper steel frame 11 is vertically lowered, the end of the lower steel frame 12 protruding from the lower connecting end plate 42 can pass through the connecting hole 411. At this time, the side wall of the lower steel frame 12 is against the inner wall of the connecting hole 411, and at the same time, the top end of the lower steel frame 12 and the bottom end of the upper steel frame 11 are in contact with each other, and the surfaces of the upper connecting end plate 41 and the lower connecting end plate 42 are in contact with each other. At this time, the upper connecting end plate 41 and the lower connecting end plate 42 brackets are connected and fixed to each other by using the connecting piece 5, and the lower steel frame 12 and the upper steel frame 11 are welded and fixed by using a welding gun through the adjacent upper stiffening plates 31. The end wall of the upper stiffening plate 31 is provided with a welding hole 311, and the upper stiffening plate 31 and the side wall of the lower steel frame 12 are welded and fixed to each other; finally, cast-in-place concrete 6 is poured on site, and the cast-in-place concrete 6 is poured between the external cast concrete 22, and the cast-in-place concrete 6 seals the upper connecting end plate 41, the lower connecting end plate 42 and the connecting piece 5; thereby quickly connecting and fixing the two steel frame columns to each other in the vertical direction, and extending the lower steel frame 12 upward by a certain length, which is convenient for welding the upper and lower steel frames 12, and can also assist in positioning the upper and lower columns. No special positioning is required, and the connection can be successfully positioned and completed, and the construction difficulty is small. The connecting piece 5 and the welding process are used to enhance the connection strength between the two steel frame columns, thereby enhancing the stability of the connection node structure, while ensuring the anti-corrosion and fire-proof performance of the component and the appearance of the appearance.
[0036] Reference Figure 2 and Figure 3The connecting member 5 includes a screw 51 and a nut 52. A plurality of screws 51 are symmetrically arranged on the lower connecting end plate 42. In the embodiment of the present application, 12 screws 51 are symmetrically arranged on the lower connecting end plate 42 around the lower steel frame 12. The upper connecting end plate 41 is provided with a bolt hole 412 for the screw 51 to pass through, and the nut 52 is threadedly connected to the screw 51. When connecting two steel frame columns, when the lower steel frame 12 is inserted into the connecting hole 411, the screw 51 passes through the bolt hole 412. After the surfaces of the upper connecting end plate 41 and the lower connecting end plate 42 are fitted to each other, the nut 52 is threadedly connected to the screw 51. A plurality of nuts 52 are simultaneously in contact with the surface of the upper connecting end plate 41, so that the upper connecting end plate 41 and the lower connecting end plate 42 are quickly and effectively connected and fixed.
[0037] Reference Figure 2 and Figure 5 The beam connection plate 7 is symmetrically arranged on the outer side wall of the lower steel frame 12. The beam connection plate 7 is used to connect the crossbar on the side wall of the lower steel frame 12. At the same time, the side end of the beam connection plate 7 is welded and fixed to the lower steel frame 12, and the top of the beam connection plate 7 is welded and fixed to the lower connection end plate 42. The beam connection plate 7 passes through the cast-in-place concrete 22 on the lower steel frame 2. The beam connection plate 7 is used to connect with the beam column on the side wall of the lower steel frame 2. The beam connection plate 7 supports the bottom end of the lower connection end plate 42, which can improve the force level of the lower connection end plate 42 and ensure the bearing capacity of the component.
[0038] Reference Figure 2 and Figure 3 , including a support plate 71 and a force plate 72. The support plate 71 is fixedly arranged on the outer wall of the lower steel frame 12 by welding. The support plate 71 is arranged horizontally, and the bottom end of the beam connecting plate 7 is fixed to the surface of the support plate 71. The support plate 71 is used to support the beam connecting plate 7. After the beam connecting plate 7 is connected to the beam column, the support plate 71 effectively improves the stability and bearing capacity of the beam connecting plate 7, which is beneficial to enhancing the strength and applicability of the steel frame column connection node. The force plate 72 is fixed to each other between the inner wall of the lower steel frame 12 by welding. The force plate 72 and the support plate 71 are flush with each other, so that the lower steel frame 12 is not easy to bend when the support plate 71 is stressed, which is beneficial to improving the strength and service life of the lower steel frame 12.
[0039] Reference Figure 2 and Figure 5, including a lower stiffening plate 32 and a lower stress-bearing steel bar 321. The length direction of the lower stiffening plate 32 is arranged along the length direction of the lower steel frame 12. The side end of the lower stiffening plate 32 is fixed to the side wall of the lower steel frame 12 by welding, and the top of the lower stiffening plate 32 is fixed to the bottom wall of the support plate 71 by welding. The lower stress-bearing steel bar 321 is fixed in the cast-in-place concrete 22 on the lower steel frame 12 by pouring, and the lower stress-bearing steel bar 321 and the side wall of the lower stiffening plate 32 are fixed to each other by welding. The length direction of the lower stress-bearing steel bar 321 is arranged along the length direction of the lower steel frame 12. Before casting the steel frame column, the lower stiffening plate 32 is welded to the side wall of the lower steel frame 12, and the top of the lower stiffening plate 32 is welded to the bottom wall of the support plate 71, and finally the lower stress-bearing steel bar 321 and the side wall of the lower stiffening plate 32 are fixed to each other by welding. On the one hand, the lower stiffening plate 32 improves the stability of the lower stress-bearing steel bar 321 and facilitates mold casting. At the same time, the lower stiffening plate 32 supports the support plate 71, further enhancing the bearing capacity of the beam connecting plate 7, providing temporary strength for the prefabricated column before the connection is completed, ensuring the continuous progress of subsequent work, and preventing all connecting welds from being in the same plane, which not only ensures strength but also makes the connection simpler.
[0040] Reference Figure 4 and Figure 5 The bottom end of the lower connecting end plate 42 is fixed with several connecting tubes 8 by welding. Before the steel column is cast, the lower stress-bearing steel bar 321 located at the top corner passes through the reserved hole on the support plate 71 and is introduced into the connecting tube 8, and the end of the stress-bearing steel bar and the inner wall of the connecting tube 8 are fixed to each other by threads, causing the concentration of connection stress and improving the connection reliability; the bottom end of the upper stress-bearing steel bar 10 is also connected with the connecting tube 8 through a steel plate, and the steel plate welded on the connecting tube 8 is welded and fixed to the adjacent stiffening plate 31, and the lower stress-bearing steel bar 321 and the lower stress-bearing steel bar 321 are conveniently positioned through the connecting tube 81.
[0041] Reference Figure 5 There are several air holes 91 and steel bar reserved holes 92 on the surface of the beam connection plate 7. Reinforcing steel bars 921 are inserted into the steel bar reserved holes 92. When the steel column is prefabricated and cast, the air holes 91 provide air flow, which is beneficial to the casting of the steel column. The reinforcing steel bars 921 and the inner walls of the steel bar reserved holes 92 are fixed to each other by welding. The reinforcing steel bars 921 connect the adjacent beam connection plates 7. There are several reinforcing steel bars 921, which is beneficial to sharing the force of a single beam connection plate 7, and further improves the connection strength between the beam connection plates 7.
[0042] The implementation principle of a prefabricated steel concrete column connection node in the embodiment of the present application is as follows: the connection node is suitable for connecting two independent prefabricated concrete steel frame columns. During on-site construction, the upper steel frame 11 is vertically lifted to the top of the lower steel frame 12. After the upper steel frame 11 is vertically lowered, the end of the lower steel frame 12 protruding from the lower connection end plate 42 can pass through the connection hole 411. At this time, the side wall of the lower steel frame 12 abuts against the inner wall of the connection hole 411, and at the same time, the top end of the lower steel frame 12 and the bottom end of the upper steel frame 11 fit each other, and the surfaces of the upper connection end plate 41 and the lower connection end plate 42 fit each other. Then, the nut 52 is threadedly connected to the screw rod 51, and several nuts 52 abut against the surface of the upper connection end plate 41 at the same time, so as to quickly and effectively connect and fix the upper connection end plate 41 and the lower connection end plate 42. The welding gun is used to pass through the adjacent upper stiffening plates 31 to weld and fix the lower steel frame 12 and the upper steel frame 11, and the upper stiffening plates 31 and the side walls of the lower steel frame 12 are welded and fixed to each other; finally, cast-in-place concrete 6 is poured on site, and the cast-in-place concrete 6 is poured between the externally cast concrete 22, and the cast-in-place concrete 6 seals the upper connection end plate 41, the lower connection end plate 42 and the connector 5. Thus, the two steel frame columns are quickly connected and fixed to each other in the vertical direction, and no special positioning is required. The protruding lower steel frame 12 can be inserted into the connection hole 411 to smoothly position and complete the connection. The construction difficulty is small, which is conducive to improving the on-site construction efficiency and assembly accuracy. At the same time, the connector 5 and the welding process are used to enhance the connection strength between the two steel frame columns, thereby enhancing the stability of the connection node structure, while ensuring the anti-corrosion and fireproof performance of the component and the appearance.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A prefabricated steel-concrete column connection node, characterized in that: include: An upper steel frame (11) and a lower steel frame (12), wherein the interior of the upper steel frame (11) and the lower steel frame (12) are filled with cast-in concrete (21), and the exterior of the upper steel frame (11) and the lower steel frame (12) are wrapped with cast-in concrete (22) through a mold; An upper stiffening plate (31), wherein a plurality of upper stiffening plates (31) are symmetrically arranged on the outer side wall of the upper steel frame (11) and located at the bottom end, the upper stiffening plates (31) are fixedly connected to the upper steel frame (11) by welding, and the top end of the upper stiffening plates (31) is located in the externally poured concrete (22); An upper connecting end plate (41), the upper connecting end plate (41) being horizontally arranged at the bottom end of the upper stiffening plate (31), the upper connecting end plate (41) and the upper stiffening plate (31) being fixed to each other by welding, a connecting hole (411) for the lower steel frame (12) to pass through being opened at the center of the upper connecting end plate (41), the connecting hole (411) and the lower steel frame (12) being adapted to each other, the lower steel frame (12) passing through the connecting hole (411) and being welded to the upper steel frame (11), and the upper stiffening plate (31) and the side wall of the lower steel frame (12) being welded to each other; A lower connecting end plate (42), the lower connecting end plate (42) being fixedly arranged on the outer side wall of the lower steel frame (12) by welding, the lower connecting end plate (42) being aligned with the upper connecting end plate (41) and having surfaces flush with each other, and the lower connecting end plate (42) being fixedly arranged on the end wall of the cast-in-place concrete (22) on the lower steel frame (12) by pouring, and the lower steel frame (12) protruding from the lower connecting end plate (42); A connecting member (5), the connecting member (5) being arranged between the upper connecting end plate (41) and the lower connecting end plate (42), the connecting member (5) being used to connect and fix the upper connecting end plate (41) and the lower connecting end plate (42); Cast-in-place concrete (6), wherein the cast-in-place concrete (6) is fixed between two externally cast concretes (22) by means of on-site pouring.
2. A prefabricated steel-concrete column connection node according to claim 1, characterized in that: The connecting member (5) comprises a screw rod (51) and a nut (52). A plurality of the screw rods (51) are symmetrically arranged on the lower connecting end plate (42). The upper connecting end plate (41) is provided with a bolt hole (412) for the screw rods (51) to pass through. The nut (52) is threadedly connected to the screw rod (51). The nut (52) and the surface of the upper connecting end plate (41) are in contact with each other. After pouring, the screw rod (51) is fixed to the externally cast concrete (22) on the lower steel frame (12).
3. The prefabricated steel-concrete column connection node according to claim 1, characterized in that: It also includes a beam connection plate (7), which is symmetrically arranged on the outer side wall of the lower steel frame (12), the side end of the beam connection plate (7) is welded and fixed to the lower steel frame (12), and the top end of the beam connection plate (7) is welded and fixed to the lower connection end plate (42).
4. A prefabricated steel-concrete column connection node according to claim 3, characterized in that: It also includes a support plate (71), which is fixedly arranged on the outer wall of the lower steel frame (12) by welding, and the bottom end of the beam connecting plate (7) and the surface of the support plate (71) are fixed to each other.
5. The prefabricated steel-concrete column connection node according to claim 4, characterized in that: A force-bearing plate (72) is arranged inside the lower steel frame (12); the force-bearing plate (72) and the support plate (71) are flush with each other; and the end wall of the force-bearing plate (72) and the inner side wall of the lower steel frame (12) are fixed to each other by welding.
6. The prefabricated steel-concrete column connection node according to claim 4, characterized in that: It also includes a lower stiffening plate (32) and lower stress-bearing steel bars (321), the side ends of the lower stiffening plate (32) being fixed to the side walls of the lower steel frame (12) by welding, the top end of the lower stiffening plate (32) being fixed to the bottom wall of the support plate (71) by welding, the lower stress-bearing steel bars (321) being fixed in the cast-in-place concrete (22) on the lower steel frame (12) by pouring, and the lower stress-bearing steel bars (321) being fixed to the side walls of the lower stiffening plate (32) by threads.
7. The prefabricated steel-concrete column connection node according to claim 6, characterized in that: A plurality of connecting tubes (8) are fixedly provided at the bottom end of the lower connecting end plate (42) by welding, the lower stress-bearing steel bars (321) located at the top corners penetrate the support plate (71) and are inserted into the connecting tubes (8), and the ends of the lower stress-bearing steel bars (321) and the inner wall of the connecting tubes (8) are fixed to each other by welding.
8. The prefabricated steel-concrete column connection node according to claim 3, characterized in that: A plurality of air holes (91) and steel bar reserved holes (92) are provided on the surface of the beam connection plate (7), and reinforcing steel bars (921) are provided in the steel bar reserved holes (92). A plurality of reinforcing steel bars (921) are provided, and the reinforcing steel bars (921) and the inner wall of the steel bar reserved holes (92) are fixed to each other by welding.
9. The prefabricated steel-concrete column connection node according to claim 1, characterized in that: It also includes upper stress-bearing steel bars (10), which are fixed in the cast-in-place concrete (22) on the upper steel frame (11) by pouring, and the upper stress-bearing steel bars (10) and the side wall of the upper stiffening plate (31) are fixed to each other by welding.