A steel reinforced concrete column and steel reinforced concrete beam connecting structure

Abstract

The application relates to the technical field of building beam-column connecting structures, and particularly discloses a steel reinforced concrete column and steel reinforced concrete beam connecting structure which comprises a prefabricated column, four prefabricated beams, four locking inserts, a secondary locking frame and four outer sleeve frames. The prefabricated column comprises a column embedded part and a butt joint frame. The four outer sides of the butt joint frame are all fixed with energy absorption boxes. The prefabricated beam comprises a beam embedded part and a plug-in sleeve. The four prefabricated beams are all plugged into the butt joint frame through the plug-in sleeves. The locking inserts are used for correspondingly fixing the prefabricated beams. The secondary locking frame is vertically plugged into cooperation with the four locking inserts. The four outer sleeve frames are correspondingly sleeved on the peripheries of the plug-in sleeves of the four prefabricated beams. The prefabricated beam and the prefabricated column form a multiple fixed node structure design which is independent and combined as a whole, the strength and reliability of the node connection are enhanced, in addition, the structure design of internal rigid connection and peripheral flexible surrounding support is formed, and the direct impact of vibration energy on the internal rigid connection structure is effectively weakened.

Description

Technical Field

[0001] This invention relates to the field of building beam-column connection structure technology, and specifically proposes a connection structure between a steel-concrete column and a steel-concrete beam. Background Technology

[0002] Steel-concrete composite columns and beams refer to precast columns and beams with steel sections as the main internal metal skeleton, which are precast through concrete pouring. In building structures, compared with cast-in-place columns and beams, precast beams and columns require subsequent connection. Therefore, the connection node between beams and columns is a critical and weak point in the building structure. In order to maximize the strength and stability of the connection node, in current construction, the connection nodes of precast beams and columns are often fixed by steel bars or welded steel sections. The connection structure is basically a rigid connection, which is prone to internal force concentration at the connection node. When the beam-column structure is under stress, the force is transmitted between the connection structures. Especially when the main building is located in a seismically active zone, although the structural rigidity is sufficient to maintain small deformation, it greatly increases the risk of brittle failure at the connection node, which can lead to structural fracture and collapse in severe cases, reducing safety. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a steel-concrete composite column and steel-concrete composite beam connection structure, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention employs the following technical solution: a steel-concrete composite column and steel-concrete composite beam connection structure, comprising a precast column, four precast beams, four locking inserts, a secondary locking frame, and four outer frames; the precast column includes a column embedded part pre-embedded in concrete and a connecting frame fixed to the top of the column embedded part; the connecting frame has a square frame structure, and energy-absorbing boxes are fixed on all four outer sides of the connecting frame; the precast beam includes a beam embedded part pre-embedded in concrete and a plug-in cylinder fixed to the end of the beam embedded part; the four precast columns... Each precast beam is connected to one of the four energy-absorbing boxes via a plug-in tube, which is then inserted into the docking frame. The plug-in tube is fixed to the energy-absorbing box. Four locking plugs are used to fix the four precast beams. The locking plugs are inserted into the docking frame and the precast beams, and the locking plugs and the corresponding precast beams are fixed together on the docking frame. The secondary locking frame is vertically inserted into the four locking plugs and fixed at the top of the docking frame. The four outer frames are made of elastic metal and are fitted around the plug-in tubes of the four precast beams. The outer frames are fixed to the secondary locking frame and the plug-in tubes.

[0005] Preferably, the docking frame includes a reference frame with a square structure; an inner frame is fixed on each of the four inner sides of the reference frame, and an outer frame is fixed on each of the four outer sides; insertion windows are provided on the four sides of the reference frame; the insertion tube includes an insertion segment; the energy-absorbing box is embedded in the outer frame, avoiding the insertion window; the insertion segment is inserted into the insertion window and the inner frame.

[0006] Preferably, the plug-in tube is provided with a plurality of vertically fixed built-in plates inside the tube, and the interior of the plug-in tube is divided into a plurality of plug-in holes by adjacent built-in plates; the locking plug includes a vertically arranged plug plate, and a plurality of internal support locking blocks are fixed on the plug plate and are inserted into the plurality of plug-in holes in a one-to-one correspondence.

[0007] Preferably, the secondary lock frame includes a top frame fixed to the top of the docking frame and four locking plates vertically fixed to the bottom of the top frame. The four locking plates are vertically inserted into the plug plates of the four locking plugs.

[0008] Preferably, the plug-in tube further includes an outer section; multiple insertion slots are fixed on the four side walls of the outer section; the outer frame includes four side panels correspondingly distributed around the outer section, and multiple connecting plates are fixed on the side panels and are inserted into the multiple insertion slots on the side walls of adjacent outer sections.

[0009] Preferably, the built-in frame includes two vertical plates and two horizontal plates fixed between the two sets of vertical plates. Each set of horizontal plates has two horizontal plates. The two vertical plates and the two horizontal plates in each set form a locking frame opening. The two vertical plates and the two adjacent horizontal plates in the two sets form a supporting frame opening. The supporting frame opening is aligned with the edge of the insertion window, and the insertion segment is inserted into the supporting frame opening. Two locking tongue blocks are fixed on the energy-absorbing box, passing through the reference frame and extending into the two locking frame openings respectively. Two sets of locking plates extending into the two locking frame openings are fixed on the plug-in plate. Each set of locking plates includes two, and the two locking plates are inserted and locked into the gaps between the locking tongue blocks and the upper and lower ends of the locking frame openings respectively.

[0010] Preferably, four corner tubes are fixed at the bottom of the top frame; the outer perimeter of the base frame forms a corner area between adjacent outer frames; the four corner tubes are inserted into the four corner areas one by one; and the corner tubes are fixedly connected to the two adjacent outer frames.

[0011] Preferably, a flange is fixed on the outer wall of the plug-in cylinder to divide it into a plug-in section and an outer section, and the flange is fixed on the energy-absorbing box; an opening is provided between the plug-in slot and the flange at one end, and the connecting plug-in is inserted into the plug-in slot from the opening.

[0012] Preferably, the column pre-embedded component includes a top plate and four positioning columns fixed to the top of the top plate in a rectangular arrangement, and the docking frame is fixed to the top plate; the four positioning columns are correspondingly attached to the inner sides of the four corners of the reference frame and are clamped between two adjacent built-in frames.

[0013] The above technical solution has the following advantages or beneficial effects: This invention provides a connection structure between steel-concrete columns and steel-concrete beams. The precast beams are rigidly fixed to the connecting frame via locking inserts. An indirect flexible connection is formed between the precast beams and the connecting frame via energy-absorbing boxes. The secondary locking frame indirectly achieves a rigid series connection between the four precast beams through its interlocking with the locking inserts, and enhances the lateral tensile force on the precast beams. The outer frame is fitted around the precast beams and fixed to the secondary locking frame, further forming an overall series connection while enhancing the lateral tensile force on the precast beams. The precast beams and precast columns form an independent yet integrated combination. The multi-fixed node structure design enhances the strength and reliability of the node connections. In addition, the structure design between each precast beam and precast column forms an internal rigid connection and an external flexible surrounding support. With the internal rigid connection forming a support connection skeleton to ensure the support strength and stability, when the building experiences vibration, the energy-absorbing box can absorb and dissipate the lateral vibration energy, while the outer frame can absorb and dissipate the vibration energy located on the sides of the precast beam. This can effectively weaken the direct impact of vibration energy on the internal rigid connection structure, so as to avoid the breakage and damage of the node connection structure, thereby protecting the safety of the main structure of the precast beam and precast column.

[0014] In addition, the node connection structure of columns and beams is distributed on the precast columns and beams, and with the multi-module combination design of locking plugs, secondary locking frames and outer frames, the precast beams and precast columns can be quickly fixed and connected for installation, which improves the efficiency and convenience of installation and construction. Attached Figure Description

[0015] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0016] Figure 1 This is a schematic diagram of the connection state of a steel-concrete column and steel-concrete beam connection structure provided by the present invention (including the concrete structure).

[0017] Figure 2 This is a schematic diagram of the connection state of a steel-concrete column and steel-concrete beam connection structure provided by the present invention (excluding the concrete structure).

[0018] Figure 3 This is a top view showing the connection between four precast beams and precast columns.

[0019] Figure 4 It is a three-dimensional sectional view of the plug-in tube assembled with the docking frame through the locking plug.

[0020] Figure 5 It is a 3D structural diagram of the precast column (excluding the concrete structure).

[0021] Figure 6 This is a three-dimensional structural diagram of the column embedded parts.

[0022] Figure 7 This is a three-dimensional sectional view of the energy-absorbing box.

[0023] Figure 8 It is a three-dimensional sectional view of a precast beam (excluding the concrete structure).

[0024] Figure 9 This is a 3D structural diagram of the locking plug.

[0025] Figure 10 This is a three-dimensional structural diagram of the secondary lock frame.

[0026] Figure 11 It is a 3D structural diagram of the outer frame.

[0027] In the diagram: 1. Precast column; 2. Column embedded part; 21. Steel column; 22. Top slab; 23. Positioning column; 24. Column keel; 3. Connecting frame; 31. Reference frame; 311. Insertion window; 312. Through hole; 32. Internal frame; 321. Vertical plate; 322. Horizontal plate; 323. Support frame opening; 324. Locking frame opening; 33. External frame; 34. Energy absorption box; 341. Locking tongue block; 35. Corner area; 4. Precast beam; 5. Beam embedded part Components; 51. Steel beam; 52. End plate; 53. Beam keel; 6. Insert tube; 61. Internal plate; 62. Insert hole; 63. Flange; 64. Insert section; 65. External section; 66. Insert plate groove; 7. Locking plug; 71. Insert plate; 711. Insert groove; 72. Positioning plate; 73. Internal support locking block; 8. Secondary lock frame; 81. Top frame; 82. Locking insert plate; 83. Corner tube; 9. Outer frame; 91. Side panel; 92. Connecting insert plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a steel-concrete composite column and steel-concrete composite beam connection structure is described. It should be noted that the steel-concrete composite column and steel-concrete composite beam mentioned here are precast concrete components with steel as the internal skeleton, referred to as precast column 1 and precast beam 4 respectively. The precast column 1 is the central column and needs to be connected to four precast beams 4. The connection structure includes the connection part pre-installed in the precast column 1 and the precast beam 4, and also includes four locking plugs 7, a secondary locking frame 8 and four outer frames 9 that are used to fix the connection part of the precast beam 4 to the connection part of the precast column 1. The four precast beams 4 can be installed in a cross structure on the four side walls of the precast column 1 through the connection structure. Figure 1 The diagram shown illustrates the connection state of both precast column 1 and precast beam 4, which both contain concrete structures. Figure 2 The diagram shown is a connection diagram of precast column 1 and precast beam 4, where the concrete structure is not displayed.

[0031] like Figure 5 and Figure 6 As shown, the precast column 1 includes a column pre-embedded part 2 embedded in concrete; the column pre-embedded part 2 includes a square cylindrical steel column 21, the top of the steel column 21 is horizontally welded with a square top plate 22, and the bottom of the top plate 22 is welded with a column keel 24. The column keel 24 is a steel skeleton made of longitudinal steel bars and stirrups. The column keel 24 shown in the figure is a structural schematic diagram and does not represent the actual structural composition. The column keel 24 is a square cage structure and is fitted around the steel column 21. The top of the top plate 22 is vertically welded with four positioning columns 23. The four positioning columns 23 are rectangularly distributed relative to the four corners of the column keel 24. The positioning columns 23 are tube column structures with square cross sections and built-in round holes. The four longitudinal steel bars in the column keel 24 pass vertically through the four positioning columns 23, which improves the strength of the positioning columns 23 and facilitates the subsequent connection of the metal skeleton of the building components installed on the top of the precast column 1 into a whole. The top plate 22 and the positioning column 23 in the column embedded part 2 are exposed in the concrete.

[0032] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a docking frame 3 is fixed on the top plate 22 to connect with four precast beams 4; the docking frame 3 has a square frame structure; the docking frame 3 includes a reference frame 31 with a square structure; an inner frame 32 is welded to each of the four inner sides of the reference frame 31, and an outer frame 33 is welded to each of the four outer sides; the inner frame 32 and the outer frame 33 are aligned with the upper and lower ends of the reference frame 31, that is, the upper and lower ends of the docking frame 3 are planar structures; the bottom end of the docking frame 3 can be fixed to the top plate 22 by welding or by locking with high-strength bolts; four positioning posts 23 are correspondingly attached to the inner sides of the four corners of the reference frame 31 and are clamped between two adjacent inner frames 32; insertion windows 311 are opened on the four sides of the reference frame 31 for insertion. Window 311 is located within the outer frame 33; the side plates of two adjacent outer frames 33 form a corner area 35 of a right-angle plate structure; the inner frame 32 includes two vertical plates 321 and two horizontal plates 322 welded between the two sets of vertical plates 321, with two horizontal plates 322 in each set. The two vertical plates 321 and the two horizontal plates 322 in each set form a locking frame opening 324, and the two vertical plates 321 and the two adjacent horizontal plates 322 in the two sets form a supporting frame opening 323; the reference frame 31 has through holes 312 that pass through each locking frame opening 324, and the supporting frame opening 323 is aligned with the edge of the insertion window 311; energy-absorbing boxes 34 are embedded in each of the four outer frames 33, and buffer cavities are evenly distributed inside the energy-absorbing boxes 34, as can be seen in detail. Figure 7 As shown, the energy-absorbing box 34 is attached to the outer wall of the reference frame 31. Two locking tongue blocks 341 are welded on the energy-absorbing box 34, which pass through the two insertion holes 312 and extend into the slot frame opening 324. The middle of the energy-absorbing box 34 is a square window aligned with the insertion window 311. In addition, in this embodiment, the energy-absorbing box 34 is made of alloy spring steel.

[0033] like Figure 2 , Figure 3 and Figure 8 As shown, the precast beam 4 includes precast beam components 5 embedded in concrete; the precast beam components 5 include a steel beam 51 with an I-beam as the internal frame, an end plate 52 welded to one end of the steel beam 51, and a beam joist 53 welded to one side of the end plate 52. The beam joist 53 is also a steel joist composed of main steel bars and stirrups, forming a square cage structure. The steel beam 51 is located inside the cage of the beam joist 53; a square tube-shaped plug-in cylinder 6 is welded to the other side of the end plate 52. It should be noted that the beam embedded part 5 extends through the concrete structure of the precast beam 4 to both ends. If both ends of the precast beam 4 are connected to the precast column 1, which serves as the central column, the structures of the two ends of the beam embedded part 5 can be the same. If the precast column 1 connected to one end of the precast beam 4 is a side column, the structures of the two ends of the beam embedded part 5 can be different. In this invention, the connection structure is a connection design between the precast beam 4 and the precast column 1, which serves as the central column. Therefore, the precast beam 4 shown in the attached drawings only shows the structural composition of one end.

[0034] like Figure 2 , Figure 4 and Figure 8 As shown, a square flange 63 is welded to the outer wall of the plug-in cylinder 6. The plug-in cylinder 6 is divided into an outer section 65 and a plug-in section 64 by the flange 63. The outer section 65 is welded to the end plate 52. The plug-in section 64 passes through the square window of the energy-absorbing box 34 and the plug-in window 311 of the reference frame 31 and is inserted into the support frame opening 323. The square window, the plug-in window 311 and the support frame opening 323 together provide external support for the plug-in section 64, ensuring that the precast column 1 can provide a relatively sufficient lap surface for the precast beam 4. Multiple screw pins corresponding to the mounting holes on the flange 63 are welded on the energy-absorbing box 34. The flange 63 is tightly attached to the energy-absorbing box 34, and the flange 63 is locked and fixed to the energy-absorbing box 34 by the cooperation of the nut and the screw pin.

[0035] like Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9As shown, the plug-in cylinder 6 has multiple vertically welded built-in plates 61 inside, which are evenly distributed. The interior of the plug-in cylinder 6 is divided into multiple plug-in holes 62 by adjacent built-in plates 61. Four locking plugs 7 are used to fix the four precast beams 4. Each locking plug 7 includes a vertically arranged plug plate 71. One side of the plug plate 71 has plug grooves 711 extending to both the upper and lower ends. The other side of the plug plate 71 has multiple internal support locking blocks 73 welded to each other, which correspond to and cooperate with the multiple plug holes 62 within the same plug-in cylinder 6. The locking plugs 7 are installed from within the frame of the docking frame 3. Multiple internal support locking blocks 73 are inserted one-to-one into multiple insertion holes 62. The internal support locking blocks 73 provide internal support for the insertion cylinder 6 and improve the strength of the connection between the precast beam 4 and the precast column 1. Two sets of locking plates 72 are also welded to the same side of the plug plate 71 on which the internal support locking blocks 73 are fixed. The two sets of locking plates 72 are located above and below the internal support locking blocks 73. The two sets of locking plates 72 are correspondingly matched with two locking frame openings 324. Each set of locking plates 72 includes two. When the internal support locking blocks 73 are inserted into the insertion holes 62, the two sets of locking plates 72 extend towards the two locking frames. The two locking plates 72 are inserted into and locked into the gaps between the locking tongue block 341 and the upper and lower ends of the locking frame opening 324 in the frame opening 324. Bolt holes are continuously and vertically drilled on the four horizontal plates 322 of the inner frame 32, the two locking tongue blocks 341 of the energy-absorbing box 34, the four locking plates 72, part of the inner support locking block 73, the plug-in cylinder 6, and the top plate 22. When the energy-absorbing box 34 is close to the reference frame 31, the plug-in plate 71 is close to the horizontal plate 322, and the plug-in cylinder 6 is close to the plug-in plate 71, all the bolt holes are vertically aligned. For locking, additional bolts can be used. Long, high-strength bolts pass vertically through bolt holes, with the bottom end of the bolt passing through the top plate 22 and welded to it. The upper end of the bolt is locked with a nut. The energy-absorbing box 34 and the plug-in tube 6 can be simultaneously locked and fixed to the docking frame 3 by the locking plug 7 in conjunction with the bolts, which facilitates quick and easy installation. The locking plug 7 is connected to the two slots of the slot frame 324 by two sets of slot plates 72, and the inner support locking block 73 is inserted into the plug-in tube 6. The locking plug 7 is equivalent to an isosceles triangular support frame that indirectly installs the plug-in tube 6 onto the docking frame 3, which improves the installation stability and strength of the precast beam 4.

[0036] like Figure 2 , Figure 4 and Figure 10As shown, after the four precast beams 4 are locked and fixed in sequence by the locking plug 7, they can be further connected and fixed by the auxiliary locking frame 8 and the docking frame 3. The auxiliary locking frame 8 includes a top frame 81 with a square frame structure. Four locking plates 82 and four corner tubes 83 are vertically welded to the bottom of the top frame 81. The four locking plates 82 and four corner tubes 83 are evenly distributed around the center of the top frame 81. The locking plates 82 are vertically inserted into the insertion slots 711 of the plug plate 71. During installation, the four locking plates... The four plug-in plates 71 are installed one-to-one with the four corner tubes 83, which are plugged into the four corner areas 35 respectively. The corner tubes 83 are close to the two adjacent outer frames 33. The top frame 81 is locked to the top of the docking frame 3 with high-strength bolts, and the bottom of the corner tubes 83 is locked to the top plate 22 with high-strength bolts. The secondary locking frame 8 indirectly realizes the integral series fixation between the four precast beams 4 and the precast column 1 through the plug-in cooperation with the four locking plugs 7, and strengthens the lateral tension of each precast beam 4.

[0037] like Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 11 As shown, the four outer frames 9 are made of alloy spring steel, which has high tensile strength and excellent elastic plastic deformation capacity. The four outer frames 9 are fitted one-to-one around the outer sections 65 of the four precast beams 4. The plug-in cylinder 6 has multiple evenly distributed insert plate slots 66 welded on the four side walls of the outer section 65. The outer frame 9 includes four side panels 91 corresponding to the outer perimeter of the outer section 65. Multiple connecting plates 9 are welded on the side panels 91, which can be inserted into the multiple insert plate slots 66 on the side walls of adjacent outer sections 65. 2. The insert plate groove 66 extends axially along the insert cylinder 6, and an opening is provided between the insert plate groove 66 and the end connected to the flange 63. During construction, before the precast beam 4 is inserted, the outer frame 9 can be pre-inserted onto the outer section 65 from the opening, and each connecting insert plate 92 is inserted into the corresponding insert plate groove 66. After the secondary locking frame 8 is fixedly installed, the outer frame 9 can be locked and fixed to the top frame 81 and the two adjacent corner cylinders 83 by high-strength bolts, and each connecting insert plate 92 can be locked into the corresponding insert plate groove 66 by high-strength bolts. For the longer precast beam 4, which is installed on the precast column 1 at one end, it presents the characteristics of a cantilever beam structure. The outer frame 9 is fixed to the periphery of the insert cylinder 6, which enhances the lateral tension on the periphery of the precast beam 4. The fixed connection between the outer frame 9 and the secondary locking frame 8 also indirectly enhances the overall integrity of the four precast beams 4 connected in series.

[0038] It should be noted that, in order to facilitate actual docking and installation, all mounting holes in the connection structure can be appropriately enlarged, and some bolt holes can be designed as oblong holes.

[0039] During construction, the precast beam 4 (with an outer frame 9 pre-fitted onto it) can be hoisted using an existing crane. The insertion section 64 of the precast beam 4 is aligned with the square window of the energy-absorbing box 34, and then slowly moved horizontally to insert the insertion section 64 until the flange 63 is tightly attached to the energy-absorbing box 34. Then, the locking plug 7 is inserted from inside the docking frame 3 to lock the insertion cylinder 6 onto the docking frame 3. Subsequently, the flange 63 is locked onto the energy-absorbing box 34. Then, the remaining precast beams 4 are hoisted in sequence and locked in sequence. After the four precast beams 4 have been inserted and locked in sequence, the four precast beams 4 are further indirectly locked onto the docking frame 3 through the secondary locking frame 8. Then, the four outer frames 9 are locked and fixed onto the precast beams 4 and the secondary locking frame 8 in sequence. Finally, the formwork can be supported and poured between the four precast beams 4, and the precast columns 1 and all exposed metal structures in the precast beams 4 can be poured into the concrete.

[0040] This invention provides a connection structure between steel-concrete columns and steel-concrete beams. Compared with the existing rigid butt joint connection method between precast beams 4 and precast columns 1, the above connection structure has the following advantages.

[0041] The precast beam 4 is rigidly fixed to the docking frame 3 via locking plug 7. The precast beam 4 is indirectly and flexibly connected to the docking frame 3 via energy-absorbing box 34. The secondary locking frame 8 indirectly achieves rigid series connection between the four precast beams 4 through its interlocking with the locking plug 7, and enhances the lateral tensile force on the precast beams 4. The outer frame 9 is fitted around the precast beams 4 and fixed to the secondary locking frame 8, further forming an overall series connection while enhancing the lateral tensile force on the precast beams 4. The precast beams 4 and the precast columns 1 form a multi-fixed node structure design that combines independent and integrated elements, enhancing the node connection. In addition to ensuring the strength and reliability of the connection, a structural design is formed between each precast beam 4 and precast column 1, consisting of an internal rigid connection and an external flexible surrounding support. While the internal rigid connection forms a support frame to ensure support strength and stability, when the building experiences vibration, the energy-absorbing box 34 can absorb and dissipate lateral vibration energy, while the outer frame 9 can absorb and dissipate vibration energy located laterally around the precast beam 4. This effectively weakens the direct impact of vibration energy on the internal rigid connection structure, preventing breakage and damage to the node connection structure, thereby protecting the safety of the main structure of the precast beam 4 and precast column 1. Here, both the energy-absorbing box 34 and the outer frame 9 are made of alloy spring steel, which has high elasticity and can produce various plastic deformations such as torsion, compression, and bending. This plastic deformation is recoverable, and vibration energy is absorbed and dissipated through the reciprocating deformation of the material, acting as a shock absorber.

[0042] In addition, the node connection structure of the columns and beams is distributed on the precast columns 1 and precast beams 4, and with the multi-module combination design of locking plugs 7, secondary locking frames 8 and outer frames 9, the precast beams 4 and precast columns 1 can be quickly fixed and installed, which improves the efficiency and convenience of installation and construction.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A connection structure between a steel-concrete composite column and a steel-concrete composite beam, characterized in that, include: The precast column includes a column pre-embedded part embedded in concrete and a docking frame fixed to the top of the column pre-embedded part; the docking frame has a square frame structure and energy-absorbing boxes are fixed on the four outer sides of the docking frame. Four precast beams; the precast beams include beam embeddings embedded in concrete and plug-in tubes fixed to the ends of the beam embeddings; all four precast beams pass through the four energy-absorbing boxes through the plug-in tubes and are plugged into the docking frame, and the plug-in tubes are fixed to the energy-absorbing boxes; Four locking plugs are used to fix the four precast beams respectively; the locking plugs are inserted into the precast beams from inside the docking frame, and the locking plugs and the corresponding precast beams are fixed together on the docking frame; The secondary lock frame is vertically inserted into and fixed to the top of the docking frame with four locking plugs. And four outer frames, made of elastic metal, are fitted one-to-one around the plug-in tubes of the four precast beams; the outer frames are fixed to the secondary lock frame and the plug-in tubes.

2. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 1, characterized in that: The docking frame includes a reference frame with a square structure; an inner frame is fixed on each of the four inner sides of the reference frame, and an outer frame is fixed on each of the four outer sides; insertion windows are provided on the four sides of the reference frame; the insertion tube includes an insertion segment; the energy-absorbing box is embedded in the outer frame, avoiding the insertion window; the insertion segment is inserted into the insertion window and the inner frame.

3. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 2, characterized in that: The plug-in tube is provided with multiple vertically fixed built-in plates inside the tube, and the interior of the plug-in tube is divided into multiple plug-in holes by adjacent built-in plates; the locking plug includes a vertically arranged plug plate, and multiple inner support locking blocks are fixed on the plug plate and are inserted into the multiple plug-in holes one by one.

4. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 3, characterized in that: The secondary locking frame includes a top frame fixed to the top of the docking frame and four locking plates vertically fixed to the bottom of the top frame. The four locking plates are vertically inserted into the insertion plates of four locking plugs.

5. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 4, characterized in that: The plug-in tube also includes an outer section; multiple insertion slots are fixed on the four side walls of the outer section; the outer frame includes four side panels correspondingly distributed around the outer section, and multiple connecting plates are fixed on the side panels and are inserted into the multiple insertion slots on the side walls of adjacent outer sections.

6. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 3, characterized in that: The built-in frame includes two vertical plates and two horizontal plates fixed between the two sets of vertical plates. Each set of horizontal plates has two horizontal plates. The two vertical plates and the two horizontal plates in each set form a locking frame opening. The two vertical plates and the two adjacent horizontal plates in the two sets form a supporting frame opening. The supporting frame opening is aligned with the edge of the insertion window, and the insertion section is inserted into the supporting frame opening. Two locking tongue blocks are fixed on the energy-absorbing box, passing through the reference frame and extending into the two locking frame openings respectively. Two sets of locking plates are fixed on the plug-in plate, extending into the two locking frame openings respectively. Each set of locking plates includes two, and the two locking plates are inserted and locked into the gaps between the locking tongue blocks and the upper and lower ends of the locking frame openings respectively.

7. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 5, characterized in that: Four corner tubes are fixed at the bottom of the top frame; the outer perimeter of the base frame forms a corner area between adjacent outer frames; the four corner tubes are inserted into the four corner areas one by one; and the corner tubes are fixedly connected to the two adjacent outer frames.

8. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 5, characterized in that: A flange is fixed on the outer wall of the plug-in tube, dividing it into a plug-in section and an outer section. The flange is fixed on the energy-absorbing box. An opening is provided between the plug-in slot and the flange at one end, and the connecting plug-in plate is inserted into the plug-in slot from the opening.

9. The connection structure between a steel-concrete composite column and a steel-concrete composite beam according to claim 2, characterized in that: The column pre-embedded component includes a top plate and four positioning columns fixed at the top of the top plate in a rectangular arrangement, and the docking frame is fixed on the top plate; the four positioning columns are correspondingly attached to the inner sides of the four corners of the reference frame and are clamped between two adjacent built-in frames.

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