Partial composite beam-superposed composite column three-dimensional assembly type connecting joint

Abstract

The utility model relates to a partial composite beam-superposed composite column three-dimensional assembly type connecting joint which comprises a superposed composite column, a main beam and a secondary beam. The overlapped combination column comprises a steel pipe, and reserved pipes are arranged on the two faces, corresponding to the main beam, of the steel pipe. Each of the main beam and the secondary beam comprises an internal stress assembly and an external stress assembly, the internal stress assembly comprises H-shaped steel, and the external stress assembly is arranged between an upper flange and a lower flange of the H-shaped steel; the end, facing the laminated combination column, of a web of the H-shaped steel of the secondary beam protrudes and is provided with an open hole. The utility model has the beneficial effects that the prefabricated superposed combination column and the partial combination beam with the steel joint are adopted and can be quickly mounted after being transported to a site, the connection between beam and column members is convenient, quick, firm and reliable, the workload of on-site molding, mounting and welding is reduced, and only later concrete spraying construction is required after mounting and connecting, so that the construction efficiency is greatly improved. On the premise of ensuring the quality, the on-site construction procedure is simplified, and the construction time is saved.

Description

Technical Field

[0001] The utility model relates to the field of assembled buildings, and in particular comprises a three-dimensional assembled connection node of a partial composite beam and a composite column. Background Art

[0002] Prefabricated buildings refer to buildings that are made by processing prefabricated components and accessories such as floor slabs, wall panels, stairs, balconies, etc. in factories, transporting them to construction sites, and assembling and installing them on site through reliable connection methods. Compared with traditional buildings, prefabricated buildings have the advantages of improved construction efficiency, energy conservation and environmental protection, and fast construction speed. However, in prefabricated buildings, the connection nodes between various prefabricated components are one of the key technologies, and their reliability directly affects the seismic performance and stability of the building.

[0003] At present, the prefabricated building technology started late, and the connection nodes generally have the problem of difficult to ensure the construction quality. At the same time, in high-rise and large-span structures where prefabricated technology is widely used, fire protection is difficult, and higher requirements are placed on the fire resistance of the connection nodes. There is an urgent need to improve the bearing capacity and seismic performance of the connection nodes, simplify the construction process, and improve construction efficiency and quality. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a three-dimensional assembled connection node of a partial composite beam-composite composite column.

[0005] The three-dimensional assembled connection node of the partial composite beam and the composite column comprises: a composite column, a main beam and a secondary beam; the composite column comprises a steel pipe, and reserved pipes are arranged on two sides of the steel pipe corresponding to the main beam;

[0006] The main beam and the secondary beam both include an internal stress component and an external stress component, the internal stress component includes an H-shaped steel, and the external stress component is arranged between the upper flange and the lower flange of the H-shaped steel; the web of the H-shaped steel of the secondary beam protrudes toward one end of the composite column and is provided with an opening;

[0007] The connector is in the shape of a Chinese character "J", with ear plates at both ends; each main beam is fixed to the opposite sides of the composite column through a connector; a single-sided bolt runs through the middle of the connector, and the single-sided bolt is inserted into the reserved pipe for fixing; the ear plates at the ends of the two connectors are attached to the two sides of the protruding ends of the secondary beam web, and the connector ear plates and the web are connected through high-strength bolts;

[0008] Core concrete and external concrete are poured inside and outside the steel pipe respectively, and beam concrete is poured between the upper flange and lower flange of the H-shaped steel of the main beam and secondary beam.

[0009] Preferably, the steel pipe and the core concrete form the core firmware of the composite column; the composite column also includes peripheral firmware, which includes column longitudinal reinforcement and column stirrups. Several column longitudinal reinforcements are arranged around the steel pipe along the length direction of the composite column, and several layers of column stirrups are arranged around the four column longitudinal reinforcements.

[0010] Preferably, several column stirrups are distributed along the length direction of the column longitudinal reinforcement, and the height of the column stirrups is staggered with the setting position of the reserved tube on the core hardware for inserting single-sided bolts. The column longitudinal reinforcement and column stirrups are integrated with the steel pipe through external concrete.

[0011] Preferably, the external stress component includes beam longitudinal reinforcement and tie rods, the beam longitudinal reinforcement is parallel to the length direction of the corresponding main beam or secondary beam, several beam longitudinal reinforcements are arranged between the upper flange and the lower flange, and several tie rods are arranged between the beam longitudinal reinforcements; the external stress component is cast inside the beam concrete.

[0012] Preferably, the beam concrete of the main beam is poured between the upper flange and the lower flange at a certain range away from the composite column, and there is a gap between the beam concrete and the composite column for installing single-sided bolts; after the main beam and the secondary beam are connected to the composite column through connecting parts, later concrete is poured in the gap between the beam concrete and the composite column.

[0013] Preferably, the beam concrete of the secondary beam is cast between the upper flange and the lower flange, and the web of the secondary beam protrudes from the beam concrete toward one end of the composite column. After the main beam and the secondary beam are connected by connecting pieces and the composite column, later concrete is cast between the beam concrete and the composite column, and the later concrete wraps the protruding end of the web of the secondary beam and the ear plate of the connecting piece.

[0014] Preferably, beam concrete is also poured on the outer surfaces of the upper flange and the lower flange.

[0015] Preferably, the cross-sectional shape of the steel pipe is rectangular, the column longitudinal reinforcements are arranged in a rectangular shape around the steel pipe, and the column stirrups are rectangular.

[0016] The beneficial effects of the utility model are:

[0017] 1) The utility model adopts prefabricated composite columns and partial composite beams with steel joints, which can be quickly installed after being transported to the site. The connection between the beam and column components is convenient, fast, and reliable, which reduces the workload of on-site mold making, installation and welding. After installation and connection, only the subsequent spraying of concrete construction is required. Under the premise of ensuring quality, the on-site construction process is simplified and construction time is saved.

[0018] 2) The external concrete of the composite column can effectively protect the internal steel pipe, column longitudinal reinforcement and column stirrups under fire. At the same time, some composite beams can still effectively bear stress under fire. The externally wrapped beam concrete delays the temperature increase of the H-shaped steel beam, improves the fire resistance of the connection node, and enhances the safety of the structure.

[0019] 3) The connection nodes of the utility model require no or very little welding work. By pre-reserving bolt holes on the composite columns and steel joints, processing and installation are convenient, avoiding the influence of welding residual stress and welds on the quality of the connection nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional assembled connection node structure of a partial composite beam-composite composite column;

[0021] Figure 2 It is a schematic diagram of the connection between the composite column and the main beam;

[0022] Figure 3 This is a schematic diagram of the internal structure of the composite column;

[0023] Figure 4 This is the decomposition diagram of the composite column;

[0024] Figure 5 A schematic diagram of the combination of the main beam and the connecting member;

[0025] Figure 6 Schematic diagram of the internal structure of the main beam;

[0026] Figure 7 Schematic diagram of the splitting of the main beam;

[0027] Figure 8 It is a schematic diagram of a single-sided bolt;

[0028] Fig. 9 It is a schematic diagram of the connection between the composite column and the main beam and the secondary beam;

[0029] Fig.10 This is a schematic diagram of the internal structure of the secondary beam;

[0030] Fig.11 The schematic diagram of the splitting of the secondary beam is shown in Figure 1.

[0031] Fig.12 Schematic diagram of high-strength bolts.

[0032] Explanation of the accompanying drawings: composite column 1, main beam 2, secondary beam 3, connector 4, core fastener 11, peripheral fastener 12, reserved pipe 13, internal stress component 21, external stress component 22, through hole 41, single-sided bolt 42, high-strength bolt 43, steel pipe 111, core concrete 112, external concrete 113, column longitudinal reinforcement 121, column stirrups 122, H-shaped steel 211, beam concrete 212, upper flange 213, lower flange 214, web 215, beam longitudinal reinforcement 221, tie rod 222, screw 421, steel washer 422, sleeve 423, tapered ball 424. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0034] Embodiment 1

[0035] As an example, Figures 1 to 5 , Figures 8 to 10 , Fig.12 As shown, this partial composite beam-composite composite column three-dimensional assembled connection node includes: a composite column 1, a main beam 2 and a secondary beam 3;

[0036] The composite column 1 includes a steel tube 111 and a peripheral fixture 12. The steel tube 111 is provided with reserved tubes 13 on both sides corresponding to the main beam 2. The peripheral fixture 12 includes column longitudinal reinforcement 121 and column stirrups 122. Several column longitudinal reinforcements 121 are arranged around the steel tube 111 along the length direction of the composite column 1. Several layers of column stirrups 122 are arranged around four column longitudinal reinforcements 121 and distributed along the length direction of the column longitudinal reinforcements 121. The plane where the column stirrups 122 are located is arranged perpendicular to the column longitudinal reinforcements 121. The height of the column stirrups 122 is staggered from the setting position of the reserved tubes 13 on the core fixture 11.

[0037] In this embodiment, the cross-sectional shape of the steel pipe 111 is rectangular, four column longitudinal reinforcements 121 are arranged on the periphery of the steel pipe 111, and the corresponding column stirrups 122 are rectangular.

[0038] The steel pipe 111 is poured with core concrete 112 and external concrete 113 inside and outside respectively, and the steel pipe 111 and the core concrete 112 form the core component 11 of the composite column 1. The column longitudinal reinforcement 121 and the column stirrup 122 are integrated with the steel pipe 111 through the external concrete 113.

[0039] The external concrete 113 of the composite column 1 can effectively protect the internal steel pipe 111, column longitudinal reinforcement 121 and column stirrups 122 under fire.

[0040] The main beam 2 and the secondary beam 3 both include an internal stress component 21 and an external stress component 22. The internal stress component 21 includes an H-shaped steel 211. The H-shaped steel 211 includes an upper flange 213, a lower flange 214 and a web 215. The upper flange 213 is arranged parallel to the lower flange 214. The web 215 is arranged perpendicular to the upper flange 213 and the lower flange 214, respectively, and the web 215 is fixed at the middle position of the upper flange 213 and the lower flange 214, respectively.

[0041] The upper flange 213, the lower flange 214 and the web 215 of the main beam 2 are of equal length, and the web 215 of the H-shaped steel 211 of the secondary beam 3 protrudes between the upper flange 213 and the lower flange 214 at one end toward the composite column 1, and is provided with three openings, such as Fig.10 shown.

[0042] like Figure 1 to Figure 2 , Figure 5 As shown, the connector 4 is in a "X" shape, with ear plates at both ends; each main beam 2 is fixed to the opposite sides of the composite column 1 through a connector 4; one side of the middle of the connector 4 is welded and fixedly connected to the end of the stress component 21 in the main beam 2, and the other side is clamped on the outside of the composite column 1, and two ear plates protrude from the middle of the side of the composite column 1. A plurality of through holes are opened in the middle of the connector 4 for passing through a single-sided bolt 42, which is inserted into the reserved pipe 13 for fixing, and the reserved pipe 13 passes through the external concrete 113, so that the single-sided bolt 42 can be inserted into the steel pipe 111 and fixed to the core concrete 112.

[0043] like Figure 1 and Fig. 9 As shown, the ear plates at the ends of the two symmetrical connectors 4 are attached to the two sides of the protruding ends of the web 215 of the secondary beam 3, and the ear plates of the connector 4 are also provided with three openings, corresponding to the openings at the ends of the web 215 of the secondary beam 3. The ear plates of the connector 4 and the web 215 are connected through high-strength bolts 43, and the secondary beam 3 is fixed between the two symmetrical connectors 4, thus realizing the indirect fixation of the secondary beam 3 and the composite column 1. The connection between the beam and column components is convenient, fast, and reliable, and no or only a small amount of welding work is required. Bolt holes can be reserved in advance on the composite column 1, the connector 4, and the web 215 of the secondary beam 3, which is convenient for processing and installation, and avoids the influence of welding residual stress and welds on the quality of the connection nodes.

[0044] like Figure 8 As shown, the single-side bolt 42 includes a screw rod 421, a steel washer 422, a sleeve 423 and a conical ball 424, and the sleeve 423 is sleeved on the threaded section; Fig.12 As shown, the high-strength bolt 43 includes a bolt 431 and a nut 432 .

[0045] Embodiment 2

[0046] As another example, Figures 6 to 12 As shown, this embodiment 2 proposes a more specific partial composite beam-composite composite column three-dimensional assembled connection node based on the embodiment 1. The main beam 2 and the secondary beam 3 also include an external stress component 22, and the external stress component 22 is arranged between the upper flange 213 and the lower flange 214 of the H-shaped steel 211.

[0047] The external stress component 22 includes a beam longitudinal reinforcement 221 and a tie rod 222. The beam longitudinal reinforcement 221 is parallel to the length direction of the corresponding main beam 2 or secondary beam 3. Several beam longitudinal reinforcements 221 are arranged between the upper flange 213 and the lower flange 214, and the length of the beam longitudinal reinforcement 221 matches the length of the upper flange 213 and the lower flange 214. Several tie rods 222 are arranged between the beam longitudinal reinforcements 221. The plurality of tie rods 222 are evenly distributed along the length direction of the beam longitudinal reinforcement 221. The tie rods 222 connect the upper flange 213 and the lower flange 214 of the H-shaped steel beam 211 along a direction perpendicular to the beam longitudinal reinforcement 221.

[0048] Beam concrete 212 is poured between the upper flange 213 and the lower flange 214 of the H-shaped steel 211 of the main beam 2 and the secondary beam 3, and the external stress component 22 is poured inside the beam concrete 212. The H-shaped steel beam 211, the beam longitudinal reinforcement 221, and the tie rod 222 are all integrated by the beam concrete 212, specifically:

[0049] The beam concrete 212 of the main beam 2 is cast between the upper flange 213 and the lower flange 214 at a certain range away from the composite column 1. There is a gap between the beam concrete 212 and the composite column 1, which is used to reserve space for installing the single-sided bolts 42; after the main beam 2 and the secondary beam 3 are connected to the composite column 1 through the connecting piece 4, the later concrete is cast in the gap between the beam concrete 212 and the composite column 1.

[0050] The beam concrete 212 of the secondary beam 3 is cast between the upper flange 213 and the lower flange 214, so the web 215 of the secondary beam 3 protrudes from the beam concrete 212 toward one end of the composite column 1. After the main beam 2 and the secondary beam 3 are connected to the composite column 1 through the connector 4, later concrete is cast between the beam concrete 212 and the composite column 1, and the later concrete wraps the protruding end of the web 215 of the secondary beam 3 and the ear plate of the connector 4.

[0051] The main beam 2 and the secondary beam 3 cast with beam concrete 212 can still effectively bear stress under fire. The beam concrete 212 is also cast on the outer surfaces of the upper flange 213 and the lower flange 214, which delays the temperature increase of the H-shaped steel 211, improves the fire resistance of the connection node, and enhances the safety of the structure.

[0052] Prefabricated composite columns 1, secondary beams 3 and main beams 2 with connectors 4 are used, which can be quickly installed after being transported to the site. After installation and connection, only the subsequent concrete construction is required. Under the premise of ensuring quality, the on-site construction process is simplified and construction time is saved.

Claims

1. A three-dimensional assembled connection node of a partially composite beam and a composite column, characterized in that: include: Composite columns, main beams and secondary beams; the composite columns include steel pipes, and reserved pipes are arranged on both sides of the steel pipes corresponding to the main beams; The main beam and the secondary beam both include an internal stress component and an external stress component, the internal stress component includes an H-shaped steel, and the external stress component is arranged between the upper flange and the lower flange of the H-shaped steel; the web of the H-shaped steel of the secondary beam protrudes toward one end of the composite column and is provided with an opening; The connector is in the shape of a Chinese character "J", with ear plates at both ends; each main beam is fixed to the opposite sides of the composite column through a connector; a single-sided bolt runs through the middle of the connector, and the single-sided bolt is inserted into the reserved pipe for fixing; the ear plates at the ends of the two connectors are attached to the two sides of the protruding ends of the secondary beam web, and the connector ear plates and the web are connected through high-strength bolts; Core concrete and external concrete are poured inside and outside the steel pipe respectively, and beam concrete is poured between the upper flange and lower flange of the H-shaped steel of the main beam and secondary beam.

2. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 1 is characterized in that: The steel pipe and core concrete form the core fasteners of the composite column; the composite column also includes peripheral fasteners, which include column longitudinal reinforcement and column stirrups. Several column longitudinal reinforcements are arranged around the steel pipe along the length direction of the composite column, and several layers of column stirrups are arranged around the four column longitudinal reinforcements.

3. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 2 is characterized in that: Several column stirrups are distributed along the length direction of the column longitudinal reinforcement, and the height of the column stirrups is staggered with the setting position of the reserved pipe on the core hardware for the insertion of single-sided bolts. The column longitudinal reinforcement and column stirrups are integrated with the steel pipe through external concrete.

4. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 1 is characterized in that: The external stress component includes beam longitudinal reinforcement and tie rods. The beam longitudinal reinforcement is parallel to the length direction of the corresponding main beam or secondary beam. Several beam longitudinal reinforcements are arranged between the upper flange and the lower flange, and several tie rods are arranged between the beam longitudinal reinforcements. The external stress component is cast inside the beam concrete.

5. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 1 is characterized in that: The beam concrete of the main beam is poured between the upper flange and the lower flange at a certain range away from the composite column. There is a gap between the beam concrete and the composite column for installing single-sided bolts. After the main beam and the secondary beam are connected with the composite column through connectors, later concrete is poured in the gap between the beam concrete and the composite column.

6. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 1 is characterized in that: The beam concrete of the secondary beam is poured between the upper flange and the lower flange, and the web of the secondary beam protrudes from the beam concrete toward one end of the composite column. After the main beam and the secondary beam are connected by connectors and the composite column, later concrete is poured between the beam concrete and the composite column, and the later concrete wraps the protruding end of the web of the secondary beam and the ear plate of the connector.

7. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 1 is characterized in that: Beam concrete is also poured on the outer surfaces of the upper and lower flanges.

8. The three-dimensional assembled connection node of partial composite beam-composite composite column according to claim 2 is characterized in that: The cross-section of the steel pipe is rectangular, the column longitudinal reinforcement is arranged around the steel pipe to form a rectangular shape, and the column stirrups are rectangular.

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