An assembled steel-concrete composite structure and its rapid construction method

Abstract

The present invention discloses an assembled steel-concrete composite structure and a rapid construction method thereof, belonging to the technical field of steel-concrete composite structures. In the present invention, the steel structure and the concrete structure are reasonably assembled to respectively form steel-concrete columns and steel-concrete beams, effectively ensuring the stress and deformation capabilities of the composite structure. And a node connection structure that is mutually embedded is arranged at the butt joint of the steel-concrete column and the steel-concrete beam. During assembly, first, a pair of steel-concrete beams are embedded and positioned at the fitting groove of the steel-concrete column for preliminary positioning, and then node connectors are used to be clamped between two adjacent steel-concrete columns up and down. The inner butt joint column and the connecting plate are in interference fit with the connecting groove and the butt joint groove formed by the steel-concrete column and the steel-concrete beam respectively. A new form of steel-concrete composite node is constructed among the three, which not only effectively improves the connection integrity of the node core area and increases the bearing capacity of the node, but also through the design of the clamping points, realizes rapid and accurate assembly during assembly, and effectively improves the assembly effect.

Description

Technical Field

[0001] The present invention relates to the technical field of steel-concrete composite structures, and more specifically, to a prefabricated steel-concrete composite structure and a rapid construction method thereof. Background Art

[0002] A steel-concrete composite structure is a structure that combines a steel structure and a concrete structure, and has the advantages of both. A prefabricated steel-concrete composite structure is a steel-concrete composite structure produced in a factory, which is prefabricated in the factory first and then assembled on site. This prefabricated steel-concrete composite structure has been widely used in major construction industries at present.

[0003] Since the prefabricated structure adopts a factory production method, it provides technical and quality guarantees for processing structural components of different material combinations. Based on this, according to the seismic failure mechanisms of different structures and components, high-strength steel, ordinary steel, high-strength concrete, and ordinary concrete are combined with each other to form a composite structure system, giving play to the advantages of their respective materials, and finding a balance in various aspects such as safety, economy, efficiency, and environmental protection. This is an important means to break through the current development bottleneck of prefabricated structures. When using a prefabricated steel-concrete composite structure, it is necessary to splice steel-concrete foundation columns and crossbeams on site. However, the node connection part of the traditional steel-concrete composite structure is relatively complex. On the one hand, the complex structure makes the splicing method not convenient enough, reducing work efficiency. But if a simple splicing method is adopted, it is difficult to ensure the strength and stability of the node connection part, and there are certain drawbacks. Summary of the Invention

[0004] The purpose of the present invention is to solve existing practical problems. Compared with the prior art, a prefabricated steel-concrete composite structure and a rapid construction method thereof are provided. The steel structure and the concrete structure are reasonably assembled to respectively form a steel-concrete column and a steel-concrete beam, effectively ensuring the force-bearing and deformation capabilities of the composite structure. And a node connection structure that is mutually embedded is provided at the butt joint of the steel-concrete column and the steel-concrete beam. When assembling, first, a pair of steel-concrete beams are embedded and positioned at the fitting groove of the steel-concrete column for preliminary positioning, and then node connectors are clamped between two adjacent upper and lower steel-concrete columns. The inner butt joint column and the connecting plate are in interference fit with the connecting groove and the butt joint groove formed by the steel-concrete column and the steel-concrete beam respectively. A new form of steel-concrete composite node is constructed among the three, which not only effectively improves the connection integrity of the node core area and increases the bearing capacity of the node, but also through the design of the clamping points, realizes fast and accurate assembly during assembly, and effectively improves the assembly effect.

[0005] The object of the present invention can be achieved by the following technical solutions: An assembled steel-concrete composite structure includes a steel-concrete column and a steel-concrete beam that are perpendicularly connected to each other. The steel-concrete column includes a steel base column and a concrete base column cast in the middle of the steel base column. Embedding grooves are reserved at both the upper and lower ends of the steel base column and are located outside the concrete base column and are used for the butt joint installation of the steel-concrete beam. The steel-concrete beam includes a pair of horizontally distributed front and rear steel base beams and a concrete base beam cast between the two. On both sides of the concrete base beam, there are abutting parts integrally formed with the pair of steel base beams. A gap with the same thickness as the steel base column is reserved between the concrete base beam and the abutting parts. Insertion grooves that are connected to the embedding grooves and are used for the insertion installation of the pair of steel base beams are opened at both the left and right ends of the steel base column;

[0006] The upper and lower pair of the steel-concrete columns are butt-jointed with the steel-concrete beam through a node connecting piece. The node connecting piece includes an outer butt column. A connecting plate that extends vertically and is butt-jointed with the pair of steel base beams is embedded and installed on the outer butt column. The steel base column, the connecting plate, and the steel base beam are fixedly connected by screws.

[0007] Further, riveting parts and riveting grooves that match each other are respectively provided at the left and right ends of the pair of steel base beams. The riveting grooves penetrate up and down. The riveting parts and the riveting grooves have the same width size, and elastic gaskets with a narrow upper part and a wide lower part are embedded and installed on the left and right opposite inner walls of the riveting grooves.

[0008] Further, the height of the embedding groove is the same as the height of the steel base beam, and its width is greater than the overall width of the steel-concrete beam.

[0009] Further, after the pair of steel-concrete beams are butted in the embedding groove, a connecting groove that is embedded and butted with the connecting plate is formed between the butted steel-concrete column and the inner wall of the embedding groove.

[0010] Further, a butting groove is formed between the two abutting parts of the butted steel-concrete column. An inner butt column that extends vertically and is embedded and butted with the butting groove is embedded and installed at the middle position of the outer butt column. The inner butt column and the end of the connecting plate are flush with each other, and the bottom end of the connecting plate abuts against the upper end wall of the concrete base column.

[0011] Further, screw holes one that penetrate through the front and rear are opened at both the left and right ends of the steel-concrete column. Corresponding positions of the steel base beam, the abutting part, and the connecting plate are respectively provided with screw holes two and screw holes three that are connected inside and outside. The screws are connected between the screw holes one, screw holes two, and screw holes three on the same axis.

[0012] Further, the end of the node connecting piece at the outermost layer in the up and down direction is butted with a column end connecting piece that is also embedded and installed with a steel-concrete beam. The side end of the node connecting piece at the outermost layer in the left and right direction is butted and installed with a beam end connecting piece.

[0013] Further, the column end connector is consistent with the end structure of the steel-concrete column. The beam end connector includes a connection block adapted to a pair of insertion groove structures. A butt block embedded in the fitting groove is fixedly connected between the connection blocks. A docking groove is also formed between the butt block and the butt portion adjacent to one side thereof. Riveting blocks and riveting ports are respectively provided on the pair of symmetrically arranged connection blocks on the left and right. The connection block is consistent with the steel base beam structure, and the riveting block, the riveting port, the riveting portion and the riveting groove structure are consistent.

[0014] Further, a sealing plate is embedded and installed between a pair of vertically adjacent connection blocks in the left-right direction. The sealing plate is provided with an insertion groove for the end of the connection block to be embedded and installed.

[0015] The present invention also provides a rapid construction method for an assembled steel-concrete composite structure, which includes the following steps:

[0016] Step 1: Prefabricate and produce steel-concrete columns, steel-concrete beams, node connectors, column end connectors, sealing plates and beam end connectors in a factory.

[0017] Step 2: Transport all the prefabricated fittings that have passed the inspection to the construction site.

[0018] Step 3: Splice the steel-concrete column and the steel-concrete beam. Insert a pair of steel-concrete beams into the fitting groove of the steel-concrete column from the outside to the inside in sequence. The steel base beam is inserted into the insertion groove, and the butt portion abuts against the inner end wall of the steel base column. The riveting portions and the riveting grooves at the ends of the pair of steel base beams are in interference fit with each other, and the clamping connection between the pair of steel-concrete beams and the end of the steel-concrete column is completed.

[0019] Step 4: Lock the combined structure of multiple spliced steel-concrete columns and steel-concrete beams by using node connectors. Insert the node connectors into the end of the steel-concrete column where a pair of steel-concrete beams are pre-installed. The inner docking column and the connecting plate are respectively embedded in the docking groove and the connecting groove formed by the steel-concrete column and the steel-concrete beam. Then, use screws to pass through the first screw hole, the third screw hole and the second screw hole in sequence for locking, and complete the fixed connection between the upper and lower pairs of steel-concrete columns. A pair of adjacent steel-concrete beams are distributed in the up-down direction of the connection part of the upper and lower pairs of steel-concrete columns.

[0020] Step 5: After the assembly of multiple groups of steel-concrete columns and steel-concrete beams is completed, use the combined structure of node connectors, column end connectors and beam end connectors to install the steel-concrete columns and steel-concrete beams at the edge in the same way. Finally, use the sealing plate to nest and seal the adjacent pair of beam end connectors exposed outside, and the overall assembly of the steel-concrete composite structure can be completed.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) In this solution, the steel structure and the concrete structure are reasonably assembled to form steel-concrete columns and steel-concrete beams respectively, effectively ensuring the stress and deformation capabilities of the composite structure. And at the joints between the steel-concrete columns and the steel-concrete beams, a node connection structure that is mutually embedded is set. During assembly, first, a pair of steel-concrete beams are embedded and positioned at the fitting grooves of the steel-concrete columns for preliminary positioning. Then, an outer docking column with an inner docking column and a connecting plate is used to connect two adjacent steel-concrete columns up and down. The inner docking column and the connecting plate are in interference fit with the connecting grooves and docking grooves formed by the steel-concrete columns and the steel-concrete beams respectively. A new form of steel-concrete composite node is constructed among the three, which not only effectively improves the connection integrity of the node core area and increases the bearing capacity of the node, but also through the design of the clamping points, during assembly, only need to align the clamping points for clamping, achieving fast and accurate assembly and effectively improving the assembly effect.

[0023] (2) This solution also adds column end connectors and beam end connectors that are consistent with the end structures of the steel-concrete columns and the steel-concrete beams, used to assemble the node connection components of the steel-concrete columns and the steel-concrete beams at the edges in the same way, realizing the overall edge sealing treatment after the assembly of the steel-concrete columns and the steel-concrete beams is completed. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention after assembly;

[0025] Figure 2 It is a schematic diagram of the structure of the steel-concrete column of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the steel-concrete beam of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the present invention when a pair of steel-concrete beams are assembled onto the steel-concrete column successively front and back;

[0028] Figure 5 It is a cross-sectional view of the present invention when one of the steel-concrete beams is assembled from top to bottom onto another steel-concrete beam;

[0029] Figure 6 It is a partial enlarged view of the present invention after a pair of steel-concrete beams are assembled on the steel-concrete column;

[0030] Figure 7 It is a schematic diagram of the structure of the node connection component of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the present invention when the node connection component is assembled onto the assembled steel-concrete column and steel-concrete beam;

[0032] Figure 9 It is a partial enlarged view of the present invention when the steel-concrete columns with the upper and lower groups of assembled steel-concrete beams are assembled using the node connection components;

[0033] Figure 10 This is a schematic structural diagram of the present invention for assembling and connecting a reinforced concrete column and a reinforced concrete beam at the edge using a node connector, a column end connector, a beam end connector, and a docking plate;

[0034] Figure 11 This is a partially enlarged view of the present invention for assembling the beam end connector and the end of the reinforced concrete beam into the column end connector;

[0035] Figure 12 This is a partial schematic diagram of the present invention for assembling and connecting a reinforced concrete column and a reinforced concrete beam at the edge using a node connector, a column end connector, a beam end connector, and a docking plate;

[0036] Figure 13 This is a schematic structural diagram of the present invention after the assembly and connection of a reinforced concrete column and a reinforced concrete beam at the edge using a node connector, a column end connector, a beam end connector, and a docking plate are completed.

[0037] Description of the reference numerals in the figure:

[0038] 1, Reinforced concrete column; 11, Steel base column; 12, Concrete base column; 13, Fitting groove; 14, Insertion groove; 15, First screw hole; 2, Reinforced concrete beam; 21, Steel base beam; 22, Concrete base beam; 23, Contact portion; 24, Riveting portion; 25, Riveting groove; 251, Elastic gasket; 26, Second screw hole; 3, Node connector; 31, Outer docking column; 32, Inner docking column; 33, Connection plate; 34, Third screw hole; 4, Column end connector; 5, Edge sealing plate; 6, Screw; 7, Connection groove; 8, Docking groove; 9, Beam end connector; 91, Connection block; 92, Contact block; 93, Riveting block; 94, Riveting opening. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1: The present invention discloses an assembled reinforced concrete composite structure. Please refer to Figures 1-4 , including a reinforced concrete column 1 and a reinforced concrete beam 2 that are perpendicularly connected to each other. The reinforced concrete column 1 includes a steel base column 11 and a concrete base column 12 cast in the middle of the steel base column 11. Fitting grooves 13 for the docking and installation of the reinforced concrete beam 2 are reserved at both the upper and lower ends of the steel base column 11 outside the concrete base column 12;

[0041] The steel-concrete beam 2 includes a pair of steel base beams 21 horizontally distributed front and back and a concrete base beam 22 cast between them. On both sides of the concrete base beam 22, there are abutting parts 23 integrally formed with the pair of steel base beams 21. A gap with the same thickness as the steel base column 11 is reserved between the concrete base beam 22 and the abutting parts 23. Insertion grooves 14 communicating with the fitting grooves 13 and used for inserting and installing the pair of steel base beams 21 are opened at both the left and right ends of the steel base column 11. The height of the fitting groove 13 is the same as the height of the steel base beam 21, and its width is greater than the overall width of the steel-concrete beam 2.

[0042] Please refer to Figures 3-6 , riveting parts 24 and riveting grooves 25 that match each other are respectively provided at the left and right ends of the pair of steel base beams 21. The riveting grooves 25 penetrate up and down. The widths of the riveting parts 24 and the riveting grooves 25 are the same, and elastic gaskets 251 with a narrow upper part and a wide lower part are embedded and installed on the left and right opposite inner walls of the riveting grooves 25;

[0043] When the steel-concrete column 1 and the steel-concrete beam 2 are butt-jointed and installed, first, one of the steel-concrete beams 2 is embedded in the fitting groove 13 at the end of the steel-concrete column 1, and the steel base beam 21 is embedded in the insertion groove 14 on one side of the steel-concrete column 1. At this time, the bottom end of the abutting part 23 abuts against the concrete base column 12, and the side end abuts against the inner wall of the fitting groove 13. The end of the concrete base beam 22 abuts against the outer end wall of the steel base column 11, completing the preliminary butt-joint of one steel-concrete beam 2 and the steel-concrete column 1. Then, the other steel-concrete beam 2 is installed from the outside towards the fitting groove 13, the steel base beam 21 is embedded in the insertion groove 14 on the other side of the steel-concrete column 1, and the pair of riveting parts 24 are respectively embedded in the riveting grooves 25. The riveting parts 24 and the riveting grooves 25 are riveted from the outside to the inside, realizing the fitting butt-joint of the ends of the two steel-concrete beams 2 in the fitting groove 13 of the steel-concrete column 1, and realizing the preliminary butt-joint installation between the steel-concrete column 1 and the pair of steel-concrete beams 2.

[0044] Please refer to Figure 6 , after the pair of steel-concrete beams 2 are butted in the fitting groove 13, a connection groove 7 for fitting and butting with the connecting plate 33 is formed between the mutually butted steel-concrete column 1 and the inner wall of the fitting groove 13, and a butting groove 8 is formed between the two abutting parts 23 of the mutually butted steel-concrete column 1;

[0045] Please refer to Figures 7-8 , the upper and lower pair of steel-concrete columns 1 are butt-jointed with the steel-concrete beam 2 through the node connecting piece 3. The node connecting piece 3 includes an outer butt-joint column 31 with the same outer dimension as the steel base column 11, and a connecting plate 33 extending up and down and butt-jointed with the pair of steel base beams 21 is embedded and installed on the outer butt-joint column 31;

[0046] Please refer to Figure 9, at the middle position of the outer docking column 31, an inner docking column 32 that extends up and down and is embedded and docked with the docking groove 8 is installed. The end of the inner docking column 32 and the connecting plate 33 are flush with each other, and the bottom end of the connecting plate 33 abuts against the upper end wall of the concrete base column 12. When the node connector 3 is inserted into the end of the steel-concrete column 1 where a pair of steel-concrete beams 2 are pre-installed, the inner docking column 32 and the connecting plate 33 are respectively embedded in the docking groove 8 and the connecting groove 7, effectively playing a limiting role at the node of the pair of steel-concrete beams 2. Then, the screw 6 is used to mechanically connect the node parts of the steel-concrete column 1, the steel-concrete beam 2, and the node connector 3 to complete the positioning. Then, the node connector 3 is used to connect the steel-concrete columns 1 with steel-concrete beams 2 above and below. A pair of adjacent steel-concrete beams 2 are distributed in the up and down directions of the connecting part, enhancing the connection strength between the column and the beam;

[0047] On both the left and right ends of the steel-concrete column 1, screw holes one 15 that penetrate through from front to back are opened. At the corresponding positions of the steel base beam 21, the abutting part 23, and the connecting plate 33, screw holes two 26 and screw holes three 34 that communicate inside and outside are respectively opened. The screw 6 is connected between the screw hole one 15, the screw hole two 26, and the screw hole three 34 on the same axis. After the node connector 3, the steel-concrete column 1, and the steel-concrete beam 2 are nested with each other, the same group of screw hole one 15, screw hole two 26, and screw hole three 34 are in the same axis and communicate with each other. The steel base column 11, the connecting plate 33, and the steel base beam 21 are fixedly connected by the screw 6.

[0048] Embodiment 2: Please refer to Figure 10 , at the end of the node connector 3 on the outermost layer in the up and down direction, a column end connector 4 that is also embedded and installed with a steel-concrete beam 2 is docked. At the side end of the node connector 3 on the outermost layer in the left and right direction, a beam end connector 9 is docked and installed;

[0049] Please refer to Figure 11 , the column end connector 4 has the same structure as the end of the steel-concrete column 1. The beam end connector 9 includes a connecting block 91 that is adapted to the structure of a pair of insertion slots 14. Between the connecting blocks 91, an abutting block 92 that is embedded in the fitting groove 13 is fixedly connected. The abutting block 92 and the abutting part 23 on the adjacent side thereof also form a docking groove 8. On the left and right symmetric pair of connecting blocks 91, a riveting block 93 and a riveting port 94 are respectively provided. The connecting block 91 has the same structure as the steel base beam 21. The riveting block 93, the riveting port 94, the riveting part 24, and the riveting groove 25 have the same structure. Between the upper and lower adjacent pair of connecting blocks 91 in the left and right direction, a sealing plate 5 is embedded and installed. The sealing plate 5 is provided with an embedding groove for the end of the connecting block 91 to be embedded and installed;

[0050] Please refer to Figures 9-13, after multiple groups of reinforced concrete columns 1 and reinforced concrete beams 2 are assembled, then use the node connector 3, column end connector 4, and beam end connector 9 to cooperate with the structure to install the reinforced concrete column 1 and the reinforced concrete beam 2 at the edge in the same way. Finally, use the edge sealing plate 5 to nest and seal the adjacent pair of beam end connectors 9 exposed outside, and the overall assembly of the reinforced concrete composite structure can be completed, realizing the overall edge sealing treatment after the assembly of the reinforced concrete column 1 and the reinforced concrete beam 2 is completed.

[0051] Embodiment 3: The present invention also proposes a quick construction method for an assembled reinforced concrete composite structure, including the following steps:

[0052] Step 1: Precast and produce the reinforced concrete column 1, reinforced concrete beam 2, node connector 3, column end connector 4, edge sealing plate 5, and beam end connector 9 in the factory.

[0053] Step 2: Transport all the precast fittings that have passed the inspection to the construction site.

[0054] Step 3: The splicing between the reinforced concrete column 1 and the reinforced concrete beam 2. Insert a pair of reinforced concrete beams 2 into the fitting groove 13 of the reinforced concrete column 1 from the outside to the inside in sequence. The steel base beam 21 is inserted into the insertion groove 14, and the abutting portion 23 abuts against the inner end wall of the steel base column 11. The riveting portions 24 and riveting grooves 25 at the ends of the pair of steel base beams 21 are in interference fit with each other, completing the clamping between the pair of reinforced concrete beams 2 and the ends of the reinforced concrete column 1.

[0055] Step 4: Lock the combined structure of multiple groups of spliced reinforced concrete columns 1 and reinforced concrete beams 2 by using the node connector 3. Insert the node connector 3 into the end of the reinforced concrete column 1 where a pair of reinforced concrete beams 2 are pre-installed. The inner docking column 32 and the connecting plate 33 are respectively embedded in the docking groove 8 and the connecting groove 7 formed by the reinforced concrete column 1 and the reinforced concrete beam 2, and then use the screw 6 to pass through the first screw hole 15, the third screw hole 34, and the second screw hole 26 in sequence for locking, completing the fixed connection between the upper and lower pairs of reinforced concrete columns 1. The adjacent pair of reinforced concrete beams 2 are distributed in the up and down directions of the connection part of the upper and lower pairs of reinforced concrete columns 1.

[0056] Step 5: After multiple groups of reinforced concrete columns 1 and reinforced concrete beams 2 are assembled, then use the combined structure of the node connector 3, column end connector 4, and beam end connector 9 to install the reinforced concrete column 1 and the reinforced concrete beam 2 at the edge in the same way. Finally, use the edge sealing plate 5 to nest and seal the adjacent pair of beam end connectors 9 exposed outside, and the overall assembly of the reinforced concrete composite structure can be completed.

[0057] Among them, in the first step, the prefabrication process of the steel-concrete column 1 mainly includes: using channel steel as the main body to fabricate the hollow steel base column 11, placing a concrete formwork inside the steel base column 11, injecting concrete into the gap between the steel base column 11 and the concrete formwork, waiting for the concrete to completely solidify, a concrete base column 12 is formed inside the steel base column 11, and fitting grooves 13 for the docking and installation of the steel-concrete beam 2 are reserved at both the upper and lower ends of the steel base column 11 and are located outside the concrete base column 12, completing the prefabrication of the steel-concrete base column, and inserting grooves 14 for the embedding of the steel-concrete beam 2 are opened on both sides of the fitting groove 13, and screw holes one 15 for the penetration of the screw 6 are opened on both sides of the end of the steel base column 11 in the direction perpendicular to the inserting groove 14;

[0058] The prefabrication process of the steel-concrete beam 2 mainly includes: also using channel steel as the main body to fabricate two steel base beams 21 connected to each other through a pair of abutting parts 23, placing a concrete formwork outside the pair of steel base beams 21, a casting groove is formed between the concrete formwork and the pair of steel base beams 21, injecting concrete into the casting groove, waiting for the concrete to completely solidify, a concrete base beam 22 is formed between the pair of steel base beams 21, a gap consistent with the width of the steel base column 11 is reserved between the abutting part 23 and the concrete base beam 22, riveting parts 24 and riveting grooves 25 that match each other are respectively arranged at both the left and right ends of the steel base beam 21, and screw holes two 26 corresponding to the positions of the screw holes one 15 are opened on the end walls of the steel base beam 21 and the abutting part 23;

[0059] The prefabrication process of the node connector 3 mainly includes: also using channel steel as the main body to fabricate an outer docking column 31 with an inner docking column 32 and a connecting plate 33, and screw holes three 34 corresponding to the positions of the screw holes one 15 are opened on the end walls at both the upper and lower ends of the connecting plate 33;

[0060] The prefabrication processes of the column end connector 4, the edge sealing plate 5, and the beam end connector 9 mainly include: the column end connector 4 and the beam end connector 9 are respectively consistent with the end structures of the steel-concrete column 1 and the steel-concrete beam 2, the edge sealing plate 5 is a rectangular plate made of channel steel, and an inserting groove for the embedding of the beam end connector 9 is opened on the rectangular plate.

[0061] The above; only the preferred specific embodiments of the present invention; but the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention; according to the technical solution of the present invention and its improved conceptions, making equivalent substitutions or changes; should be covered by the protection scope of the present invention.

Claims

1. An assembled steel-concrete composite structure, comprising a steel-concrete column (1) and a steel-concrete beam (2) vertically connected to each other, characterized in that: The steel-concrete column (1) comprises a steel base column (11) and a concrete base column (12) cast in the middle of the steel base column (11); the upper and lower ends of the steel base column (11) are reserved with an inserting groove (13) located outside the concrete base column (12) and used for butting and installing the steel-concrete beam (2); the steel-concrete beam (2) comprises a pair of steel base beams (21) distributed horizontally in front and back and a concrete base beam (22) cast between the two; both sides of the concrete base beam (22) are provided with abutment portions (23) integrally formed with the pair of steel base beams (21); a gap having the same thickness as that of the steel base column (11) is reserved between the concrete base beam (22) and the abutment portion (23); and the left and right ends of the steel base column (11) are provided with insertion grooves (14) connected with the inserting grooves (13) and used for inserting and installing the pair of steel base beams (21); The upper and lower pairs of steel-concrete columns (1) are connected to the steel-concrete beam (2) via a node connection piece (3), wherein the node connection piece (3) comprises an outer connection column (31), and a connection plate (33) extending up and down and connected to the pair of steel base beams (21) is embedded and installed on the outer connection column (31), and the steel base column (11) is fixedly connected to the connection plate (33) and the steel base beam (21) via screws (6); The height of the engaging groove (13) is consistent with the height of the steel base beam (21), and its width is greater than the overall width of the steel-concrete beam (2). After a pair of the steel-concrete beams (2) are docked in the engaging groove (13), a connecting groove (7) that is engaged and docked with the connecting plate (33) is formed between the mutually docked steel-concrete columns (1) and the inner wall of the engaging groove (13), and a docking groove (8) is formed between the two abutting portions (23) of the mutually docked steel-concrete columns (1). An inner docking column (32) that extends up and down and is embedded and docked with the docking groove (8) is embedded and installed in the middle of the outer docking column (31). The inner docking column (32) and the end portions of the connecting plate (33) are arranged flush with each other, and the bottom end of the connecting plate (33) is in contact with the upper end wall of the concrete base column (12); The left and right ends of the steel-concrete column (1) are each provided with a screw hole (15) penetrating from front to back, and the corresponding positions of the steel base beam (21), the abutment portion (23) and the connecting plate (33) are respectively provided with a screw hole (26) and a screw hole (34) communicating with each other inside and outside, and the screw (6) is connected between the screw hole (15), the screw hole (26) and the screw hole (34) on the same axis; During assembly, first, a pair of steel-concrete beams are embedded and positioned in the fitting grooves of the steel-concrete columns for preliminary positioning. Between the two upper and lower adjacent steel-concrete columns connected by outer docking columns with inner docking columns and connecting plates, the inner docking columns and connecting plates are interference fit with the connecting grooves and docking grooves formed by the steel-concrete columns and steel-concrete beams respectively. A new form of steel-concrete composite node is constructed between the three, which not only effectively improves the connection integrity of the core area of ​​the node, but also increases the bearing capacity of the node.

2. The assembled steel-concrete composite structure according to claim 1, characterized in that: The left and right ends of the pair of steel base beams (21) are respectively provided with mutually matching rivet portions (24) and rivet grooves (25); the rivet grooves (25) are connected vertically; the rivet portions (24) and the rivet grooves (25) are of the same width; and elastic gaskets (251) which are narrow at the top and wide at the bottom are embedded and installed on the left and right opposite inner walls of the rivet grooves (25).

3. The assembled steel-concrete composite structure according to claim 1, characterized in that: The ends of the node connectors (3) located in the outermost layer in the vertical direction are butt-jointed with column end connectors (4) which are similarly embedded and installed with the steel-concrete beam (2), and the side ends of the node connectors (3) located in the outermost layer in the horizontal direction are butt-jointed with beam end connectors (9).

4. The assembled steel-concrete composite structure according to claim 3 is characterized in that: The column end connector (4) is consistent with the structure of the end of the steel-concrete column (1), and the beam end connector (9) includes a connecting block (91) adapted to a pair of insertion grooves (14) structure, and an abutting block (92) embedded in the insertion groove (13) is fixedly connected between the connecting blocks (91), and a butt joint (8) is also formed between the abutting block (92) and the abutting portion (23) adjacent to one side thereof, and a rivet block (93) and a rivet joint (94) are respectively provided on the pair of left-right symmetrical connecting blocks (91), and the connecting block (91) is consistent with the structure of the steel base beam (21), and the rivet block (93) and the rivet joint (94) are consistent with the structure of the rivet portion (24) and the rivet groove (25).

5. The assembled steel-concrete composite structure according to claim 4 is characterized in that: An edge sealing plate (5) is embedded and installed between a pair of upper and lower adjacent connecting blocks (91) in the left-right direction, and an embedding groove for embedding and installing the end of the connecting block (91) is provided on the edge sealing plate (5).

6. A quick construction method for an assembled steel-concrete composite structure, using an assembled steel-concrete composite structure as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Prefabricate the steel-concrete columns (1), steel-concrete beams (2), node connectors (3), column end connectors (4), edge banding plates (5), and beam end connectors (9) in a factory; Step 2: Transport all prefabricated assemblies that have passed the inspection to the construction site; Step 3: splicing the steel-concrete column (1) and the steel-concrete beam (2), embedding the pair of steel-concrete beams (2) in the embedding grooves (13) of the steel-concrete column (1) from the outside to the inside, inserting the steel base beam (21) into the insertion groove (14), the abutting portion (23) abutting against the inner end wall of the steel base column (11), and the riveting portions (24) and the riveting grooves (25) at the ends of the pair of steel base beams (21) are interference-fitted with each other, thereby completing the clamping connection between the pair of steel-concrete beams (2) and the ends of the steel-concrete column (1); Step 4: The assembled structure of multiple groups of steel-concrete columns (1) and steel-concrete beams (2) are locked by using a node connector (3). The node connector (3) is inserted into the end of the steel-concrete column (1) on which a pair of steel-concrete beams (2) are pre-installed. The inner docking column (32) and the connecting plate (33) are embedded in the docking groove (8) and the connecting groove (7) formed by the steel-concrete column (1) and the steel-concrete beam (2) one by one. Then, the screw (6) is passed through the screw hole 1 (15), the screw hole 3 (34), and the screw hole 2 (26) in sequence to lock the structure. The fixed connection between the upper and lower pairs of steel-concrete columns (1) is completed. The adjacent pair of steel-concrete beams (2) are distributed in the upper and lower directions of the connection part of the upper and lower pairs of steel-concrete columns (1). Step 5: After the assembly of the multiple groups of steel-concrete columns (1) and steel-concrete beams (2) is completed, the steel-concrete columns (1) and the steel-concrete beams (2) at the edges are installed in the same manner using the node connectors (3), the column end connectors (4), and the beam end connectors (9) combined structure. Finally, the adjacent pair of beam end connectors (9) exposed to the outside are nested and edge-sealed using the edge-sealing plates (5), thereby completing the overall assembly of the steel-concrete composite structure.

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