High-ductility beam-column joint connecting structure capable of being quickly disassembled and assembled

Abstract

The invention relates to the technical field of fabricated buildings, and particularly discloses a high-ductility beam-column joint connecting structure capable of being quickly disassembled and assembled, which comprises a T-shaped beam-column connecting piece, the beam-column connecting piece comprises a prefabricated beam and a prefabricated column, a square inserting groove is formed in the top of the prefabricated column, and a plurality of steel bars I extend out of the inserting groove; a plurality of second steel bars extend out of the two sides of the top of the prefabricated column, the prefabricated beam comprises a beam connecting part located in the middle and beam wing parts symmetrically arranged at the two ends of the beam connecting part, and the beam connecting part penetrates through the first steel bars and is inserted into the inserting grooves; the first steel connecting piece penetrates through the first steel bar and the second steel bar and is locked through a first nut, and the side face of the prefabricated column and the lower bottom face of the prefabricated beam are connected with a second steel connecting piece. The structure is simple, on-site rapid installation and disassembly can be achieved, turnover is convenient, the connecting part of the beam-column joint is formed by ECC pouring, and the characteristic of high ductility is achieved.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and more specifically, to a highly ductile beam-column joint connection structure that can be quickly assembled and disassembled. Background Technology

[0002] Currently, single-column canopy structures are widely used in railway and subway platforms both domestically and internationally. These structures consist of beams and columns, with the beam-column joint being a crucial connection point. A common construction method involves assembling precast beams and columns, followed by post-casting at the connection point to secure it. However, this method has several drawbacks: after casting, the cast-in-place area requires curing, setting, and formwork removal, which is cumbersome and time-consuming; furthermore, the cast-in-place structure cannot be disassembled for reuse. Summary of the Invention

[0003] In view of the above-mentioned technical problems in related technologies, the present invention provides a highly ductile beam-column joint connection structure that can be quickly assembled and disassembled, which can solve the above problems.

[0004] To achieve the above-mentioned technical objectives, the technical solution of the present invention is implemented as follows: A highly ductile beam-column joint connection structure that can be quickly assembled and disassembled includes a T-shaped beam-column connector. The beam-column connector includes a precast beam and a precast column. The top of the precast column has a square insertion groove with several reinforcing bars extending from the groove. Several reinforcing bars extend from both sides of the top of the precast column. The precast beam includes a beam connection part located in the middle and beam wings symmetrically located at both ends of the beam connection part. The beam connection part passes through the reinforcing bars and is inserted into the insertion groove. The height of the beam connection part is equal to the depth of the insertion groove. The upper end face of the beam-column connector is provided with a steel connector. The ends of the reinforcing bars are threaded. The steel connector passes through the reinforcing bars and the reinforcing bars and is locked with a nut. The side of the precast column and the bottom surface of the precast beam are connected with steel connectors. The connection parts of the precast beam and the precast column at the beam-column joint are all cast using ECC casting.

[0005] Furthermore, the precast column is provided with several cast-in-place steel bars 1, and steel bars 3 extend from two opposite sides of the precast column. The steel bars 3 are connected to the cast-in-place steel bars 1, and the ends of the steel bars 3 are threaded.

[0006] Furthermore, the precast beam is provided with several cast-in-place steel bars 2, steel bars 4 extend from the upper end face of the beam wing, and steel bars 5 extend from the lower end face of the beam wing. Steel bars 4 and 5 are both connected to the cast-in-place steel bars 2. A through hole 1 adapted to steel bar 1 is opened on the beam connection part. A boss is provided at the lower end of the beam connection part. The ends of steel bars 4 and 5 are both threaded structures.

[0007] Furthermore, the steel connector one is provided with an installation groove that matches the upper end of the beam-column connector. The installation groove is cross-shaped. The middle part of the steel connector one is provided with through holes two and three that match the first and second reinforcing bars respectively. The two ends of the steel connector one are provided with through holes four that match the fourth reinforcing bar. The fourth reinforcing bar passes through the through holes four and is locked in place by nuts two.

[0008] Furthermore, the steel connector 2 includes a first connecting block and a second connecting block. The first connecting block has a through hole 5 that matches the reinforcing bar 5. The reinforcing bar 5 passes through the through hole 5 and is locked in place by a nut 3. The second connecting block has a through hole 6 that matches the reinforcing bar 3. The reinforcing bar 3 passes through the through hole 6 and is locked in place by a nut 4. One end face of the first connecting block is in contact with the bottom surface of the beam wing. One end face of the second connecting block is in contact with the side of the precast column and the side of the boss.

[0009] The beneficial effects of the present invention are as follows: The structure of this application includes four precast components: precast beam, precast column, steel connector one, and steel connector two. The structure is simple, can be quickly installed and disassembled on site, and is easy to recycle. Moreover, the connection part of the beam-column joint is cast by ECC, which has the characteristics of high ductility. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a front view of a highly ductile beam-column joint connection structure that can be quickly assembled and disassembled according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the precast column described in an embodiment of the present invention; Figure 3 This is a partial cross-sectional view of the precast column described in an embodiment of the present invention; Figure 4 This is a schematic diagram of the precast beam structure described in an embodiment of the present invention; Figure 5 This is a partial cross-sectional view of the precast beam described in an embodiment of the present invention; Figure 6 This is a structural schematic diagram of the steel connector according to an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the steel connector two described in an embodiment of the present invention.

[0012] In the picture: 100. Precast beam; 110. Beam connection; 111. Through hole one; 112. Boss; 120. Beam wing; 121. Reinforcing bar four; 122. Reinforcing bar five; 200. Precast column; 210. Insert groove; 220. Reinforcing bar one; 230. Reinforcing bar two; 240. Nut one; 250. Reinforcing bar three; 300. Steel connector one; 310. Mounting groove; 320. Through hole two; 330. Through hole three; 340. Through hole four; 400. Steel connector two; 410. First connecting block; 411. Through hole five; 420. Second connecting block; 421. Through hole six. Detailed Implementation

[0013] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0014] The present invention discloses a highly ductile beam-column joint connection structure that can be quickly assembled and disassembled, the structure of which is as follows: Figures 1 to 7 As shown, it mainly includes four major components: precast beam 100, precast column 200, steel connector 1 300, and steel connector 2 400. Example:

[0015] Preparation of precast components: Precast column 200: The connection point with the precast beam 100 is constructed using ECC casting, exhibiting high ductility. A square insertion slot 210 is formed at the center of the column top, with several protruding reinforcing bars 220 pre-embedded within the slot. Reinforcing bars 230 protrude from both sides of the top. Reinforcing bars 350 symmetrically protrude from both sides of the column body, and the ends of all reinforcing bars are threaded (e.g., ...). Figure 2 , Figure 3 ).

[0016] Precast beam 100: The connection point with the precast column 200 is also cast using ECC, including the middle beam connection 110 and the two end beam wings 120. The beam connection 110 has a through hole 111 and a boss 112 at the lower end; the beam wings 120 have reinforcing bars 121 extending from the upper end and 122 extending from the lower end, with each reinforcing bar having a threaded end (e.g., ...). Figure 4 , Figure 5 ).

[0017] Steel connector 300: Cross-shaped, with through holes 320 and 330 in the middle, and through holes 340 at both ends. The bottom has a mounting groove 310 that matches the upper end of the beam-column connector (e.g., ...). Figure 6 ).

[0018] Steel connector 2 400: includes a first connecting block 410 and a second connecting block 420, respectively provided with through hole 5 411 and through hole 6 421 (e.g. Figure 7 ).

[0019] Assembly steps: Step 1: Install steel connector two The second connecting block 420 is attached to the side of the precast column 200 and the side of the boss 112, so that the steel bar 250 passes through the through hole 421 and is locked with the nut 4.

[0020] Step 2: Preliminary connection of beams and columns Align the beam connection part 110 of the precast beam 100 with the insertion groove 210 at the top of the precast column 200, so that the first reinforcing bar 220 passes through the through hole 111 on the beam connection part 110, and the beam connection part 110 is fully inserted into the insertion groove 210 until the upper surface of the beam connection part 110 is flush with the top surface of the precast column 200. At the same time, let the fifth reinforcing bar 122 pass through the fifth through hole 411 and lock it with the nut 3.

[0021] Step 3: Install the steel connectors Align the mounting groove 310 of steel connector 300 with the upper surface of the beam-column connection node, so that reinforcing bars 220 and 230 pass through through holes 320 and 330 respectively, and reinforcing bar 121 passes through through hole 340. Then tighten nuts 240 and 2 respectively at the threaded ends of reinforcing bars 220, 230 and 121, so that steel connector 300 is tightly pressed into the upper part of the node.

[0022] Use and disassembly: This structure requires no on-site pouring during construction; node assembly can be completed solely through bolt connections, making it suitable for rapid construction scenarios such as railway and subway platform canopies. When disassembly or relocation is required, simply loosen the nuts in reverse order and remove steel connector 300, precast beam 100, steel connector 400, and precast column 200 in sequence, enabling rapid disassembly and reuse.

[0023] In summary, this application has the following structural features: Quick assembly and disassembly: Fully modular connection, no maintenance required, high construction efficiency.

[0024] High ductility: The beam-column joint connection uses ECC material, which has good seismic performance.

[0025] Reusable: Nodes can be repeatedly disassembled and reassembled, suitable for temporary or movable structures.

[0026] Reliable connection: Multi-directional constraints are achieved through upper and lower double steel connectors, and the stiffness and bearing capacity of the nodes meet the engineering requirements.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highly ductile beam-column joint connection structure that can be quickly assembled and disassembled, comprising T-shaped beam-column connectors, characterized in that, The beam-column connector includes a precast beam (100) and a precast column (200). A square insertion slot (210) is provided at the top of the precast column (200), from which several reinforcing bars (220) extend. Several reinforcing bars (230) extend from both sides of the top of the precast column (200). The precast beam (100) includes a beam connection portion (110) located in the middle and beam wings (120) symmetrically located at both ends of the beam connection portion (110). The beam connection portion (110) passes through the reinforcing bars (220) and is inserted into the insertion slot (210). The height of (110) is equal to the groove depth of the insertion groove (210). The upper end face of the beam-column connector is provided with a steel connector (300). The ends of the first reinforcing bar (220) and the second reinforcing bar (230) are threaded. The first steel connector (300) passes through the first reinforcing bar (220) and the second reinforcing bar (230) and is locked by a nut (240). The side of the precast column (200) and the bottom surface of the precast beam (100) are connected with a steel connector (400). The connection parts of the precast beam (100) and the precast column (200) at the beam-column joint are all cast using ECC casting.

2. The highly ductile beam-column joint connection structure with quick assembly and disassembly according to claim 1, characterized in that, The precast column (200) is provided with several cast-in-place steel bars 1. Steel bars 3 (250) extend from two opposite sides of the precast column (200). The steel bars 3 (250) are connected to the cast-in-place steel bars 1. The end of the steel bars 3 (250) is a threaded structure.

3. The highly ductile beam-column joint connection structure that can be quickly assembled and disassembled according to claim 2, characterized in that, The precast beam (100) is provided with several cast-in-place steel bars II. A steel bar IV (121) extends from the upper end face of the beam wing (120), and a steel bar V (122) extends from the lower end face of the beam wing (120). Both the steel bar IV (121) and the steel bar V (122) are connected to the cast-in-place steel bars II. A through hole I (111) adapted to the steel bar I (220) is opened on the beam connecting part (110). A boss (112) is provided at the lower end of the beam connecting part (110). The ends of the steel bar IV (121) and the steel bar V (122) are both threaded.

4. The highly ductile beam-column joint connection structure with quick assembly and disassembly according to claim 3, characterized in that, The first steel connector (300) is provided with an installation groove (310) that is adapted to the upper end of the beam-column connector. The installation groove (310) is cross-shaped. The middle part of the first steel connector (300) is provided with a through hole (320) and a through hole (330) that are adapted to the first reinforcing bar (220) and the second reinforcing bar (230) respectively. The two ends of the first steel connector (300) are provided with a through hole (340) that is adapted to the fourth reinforcing bar (121). The fourth reinforcing bar (121) passes through the through hole (340) and is locked and connected by a nut.

5. The highly ductile beam-column joint connection structure with quick assembly and disassembly according to claim 3, characterized in that, The steel connector 2 (400) includes a first connecting block (410) and a second connecting block (420). The first connecting block (410) has a through hole 5 (411) adapted to the steel bar 5 (122). The steel bar 5 (122) passes through the through hole 5 (411) and is locked by a nut 3. The second connecting block (420) has a through hole 6 (421) adapted to the steel bar 3 (250). The steel bar 3 (250) passes through the through hole 6 (421) and is locked by a nut 4. One end face of the first connecting block (410) is in contact with the bottom surface of the beam wing (120). One end face of the second connecting block (420) is in contact with the side of the precast column (200) and the side of the boss (112).

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