Semi-rigid joint prefabricated beam column machining and assembling method

Abstract

The embodiment of the invention provides a semi-rigid joint prefabricated beam column machining and assembling method, and relates to the technical field of building engineering construction. Comprising a concrete column, and end steel plates are symmetrically installed on the two sides of the concrete column. Rectangular end steel plates are pre-buried at the two ends of a concrete column before pouring, stiffening ribs and transverse steel plates are welded to one sides of the end steel plates to increase the bearing capacity of the joint, first threaded holes are reserved in the end steel plates, and steel bars in a concrete beam are connected with the transverse steel plates through welding. The transverse steel plates transmit stress to the stiffening ribs and the end steel plates, finally the stress is transmitted to the columns through deformation of the end plates, the node force transmission continuity is kept, through the semi-rigid node design, the ductile failure mode of strong columns and weak beams is achieved, the requirements of anti-seismic specifications for low multi-story buildings are met, hoisting anchoring points and a self-positioning structure are integrated, the single-node assembly time is shortened, and the construction efficiency is improved. The occupied time of the crane is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of construction engineering construction, and in particular, to a processing and assembly method for semi-rigid joint precast beam-columns. Background Art

[0002] Currently, the joint connections of domestic prefabricated houses mainly adopt two forms: "dry connection" and "wet connection". For the "wet connection" of joints, secondary concrete pouring or grouting is carried out after the effective connection of the joint steel bars of precast components. There are problems such as complex joint connection structures, great on-site construction difficulties, and difficult guarantee of construction quality. For the "dry connection" process of joints using bolt connections, embedded profiled steel welding, etc., there are generally disadvantages such as high requirements for installation accuracy and excessive steel consumption of precast components, resulting in poor economy. The above-mentioned prefabricated house structure systems are obviously not suitable for application in the industrial construction of low-rise and multi-storey houses. The semi-rigid joints are closer to the actual stress conditions of the structure, can truly reflect the internal force distribution and overall deformation of the structure, and effectively reduce the stress concentration phenomenon at the joints. Under the action of seismic loads, energy can be dissipated through relative deformation, and it has good energy dissipation capacity. In the prior art, fully prefabricated buildings usually adopt rigid joints or hinged joints, with complex temporary support systems, cumbersome installation procedures, low assembly efficiency, and multiple hoisting and adjustment are required. Summary of the Invention

[0003] In view of the above problems, the embodiments of the present application provide a processing and assembly method for semi-rigid joint precast beam-columns to solve the problems of existing precast beam-column processing and assembly devices.

[0004] The embodiments of the present application provide a processing method for semi-rigid joint precast beam-columns. It includes a concrete column, and end plates are symmetrically installed on both sides of the concrete column. Stiffeners are symmetrically welded on one side of the two end plates. A transverse steel plate is welded to the bottom ends of the two stiffeners. One side of the transverse steel plate is symmetrically welded to one side of the end plate. The two transverse steel plates are installed at the upper and lower ends of the concrete beam. First threaded holes are symmetrically opened on the outer walls of the concrete column, end plates, transverse steel plates, and concrete beam. A first bolt is threadedly connected inside the first threaded hole, and a nut is threadedly connected to one side of the first bolt. A second bolt is threadedly connected to the top of the transverse steel plate and the concrete beam.

[0005] Through the above solution, rectangular end plates are embedded at both ends before the concrete column is poured. Stiffeners and transverse steel plates are welded on one side of the end plates to increase the bearing capacity of the joints. First threaded holes are reserved on the end plates. The steel bars in the concrete beam are connected to the transverse steel plates by welding. Then, the first bolt on one side of the end plate is threadedly installed and fixed with the nut by threading. Then, the second bolt is threadedly fixed. When the beam is stressed, the load is transmitted to the transverse steel plate, and the transverse steel plate then transmits the force to the stiffeners and end plates. Finally, the force is transmitted to the column through the deformation of the end plate, maintaining the continuity of joint force transmission.

[0006] In some embodiments, a gasket is sleeved on the outer wall of the first bolt, and the gasket is located on the left side of the nut.

[0007] Through the above solution, the first bolt movably penetrates through the concrete column and is threadedly connected to the nut, and the first bolt also penetrates through the gasket. The gasket is used to increase the contact area and improve the firmness of the threaded installation.

[0008] In some embodiments, reinforcing steel plates are installed on the four sides of the outer wall of the concrete column. Second threaded holes are symmetrically arranged on the outer walls of the concrete column and the reinforcing steel plates, and the second threaded holes are threadedly connected with third bolts.

[0009] Through the above solution, after installing the reinforcing steel plates on the four sides on the outer walls of the four sides of the concrete column, the third bolts are screwed to fix the reinforcing steel plates on the outer walls of the concrete column. Then, the reinforcing steel plates on the four sides are welded so that the reinforcing steel plates on the four sides are fixed around the outer wall of the concrete column. After the precast column is poured, the column is surrounded by the reinforcing steel plates at the position of the positioning bolt holes to improve the shear resistance of the concrete in the core area of the beam-column structure.

[0010] In some embodiments, an installation groove is formed on the outer wall of the concrete column. An installation plate is installed inside the installation groove. A fourth bolt is threadedly connected to one side of the installation plate. A connecting rod is hingedly installed on one side of the installation plate, and a support rod is installed at the bottom end of the outer wall of one side of the connecting rod.

[0011] Through the above solution, the installation plate is movably inserted into the installation groove, and the fourth bolt is screwed to fix the installation plate in the installation groove. Then, when the concrete column is supported on both sides by the connecting rod and the support rod, the stability of the concrete column is improved, and the bolt connection enables disassembly in the later stage.

[0012] In some embodiments, a screw rod is threadedly connected to the top of the connecting rod. A first bevel gear is installed on the outer wall of the bottom end of the screw rod. A second bevel gear is meshed with the outer wall of the first bevel gear. A rotating shaft is fixedly installed on one side of the second bevel gear, and the rotating shaft is sleeved on one side of the outer wall of the support rod.

[0013] Through the above solution, when the concrete column is supported on both sides by the connecting rod and the support rod, by screwing the rotating shaft, the second bevel gear is driven to rotate, and the second bevel gear drives the first bevel gear to rotate through meshing, and then drives the screw rod to rotate, so that the connecting rod moves in a threaded manner on the outer wall of the screw rod, and the connecting rod moves upward from the top end of the support rod to increase the overall length. By screwing, the angle can be adjusted to make the support more stable.

[0014] In some embodiments, an installation pile is installed at the bottom end of the support rod.

[0015] After embedding the installation pile into the soil through the above solution, the contact area of the support rod is increased to improve the support firmness and stability of the support rod.

[0016] The beneficial effects of the present invention are as follows: 1. Before pouring the concrete column, rectangular end steel plates are embedded at both ends. Stiffeners and transverse steel plates are welded on one side of the end steel plates to increase the bearing capacity of the joint. First threaded holes are reserved on the end steel plates, and the steel bars in the concrete beam are connected to the transverse steel plates by welding. When the beam is stressed, the load is transmitted to the transverse steel plates, and then the transverse steel plates transmit the stress to the stiffeners and end steel plates. Finally, the end plates deform and transmit the force to the column, maintaining the continuity of force transmission at the joint. Through the semi-rigid joint design, the ductile failure mode of "strong column and weak beam" is realized, meeting the requirements of the seismic code for low-rise and multi-story buildings. The integrated hoisting anchoring point and self-positioning structure shorten the assembly time of a single joint, reduce the crane occupation time by more than [X], reduce the temporary high-altitude support, and reduce the risk of overturning through the self-stabilizing design of the structure, reducing the accident rate.

[0017] 2. After installing the four-sided reinforcing steel plates on the four outer walls of the concrete column, turn the third bolt to fix the four-sided reinforcing steel plates on the outer wall of the concrete column, and then weld the four-sided reinforcing steel plates so that the fixing rings of the four-sided reinforcing steel plates are on the outer wall of the concrete column. After the precast column is poured, surround the column with reinforcing steel plates at the position of the positioning bolt holes to improve the shear bearing capacity of the concrete in the core area of the beam-column structure.

[0018] 3. When supporting both sides of the concrete column through the connecting rod and the support rod, turn the rotating shaft to drive the second bevel gear to rotate, and the second bevel gear meshes with and drives the first bevel gear to rotate, and then drives the screw rod to rotate, so that the connecting rod moves in a threaded manner on the outer wall of the screw rod, and the connecting rod moves upward from the top of the support rod to increase the overall length, and adjust the angle by turning to make the support more stable.

[0019] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically gives the specific implementation manners of the present application. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0021] Figure 1Schematic diagram of the processing of a semi-rigid joint precast beam-column in some embodiments of the present application.

[0022] Figure 2 Schematic diagram of the local structure of a concrete column and an end steel plate in some embodiments of the present application.

[0023] Figure 3 Schematic diagram of the structure of a stiffening steel plate in some embodiments of the present application.

[0024] Figure 4 Schematic diagram of the structure of a connecting rod and a support rod in some embodiments of the present application.

[0025] Figure 5 Schematic diagram of the local sectional structure of a connecting rod and a support rod in some embodiments of the present application.

[0026] Explanation of reference numerals: 1. Concrete column; 2. End steel plate; 3. Stiffening rib; 4. Transverse steel plate; 5. Concrete beam; 6. First threaded hole; 7. First bolt; 8. Gasket; 9. Nut; 10. Second bolt; 11. Stiffening steel plate; 12. Second threaded hole; 13. Third bolt; 14. Installation groove; 15. Installation plate; 16. Fourth bolt; 17. Connecting rod; 18. Screw rod; 19. First bevel gear; 20. Second bevel gear; 21. Rotating shaft; 22. Support rod; 23. Installation pile. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0028] The terms "including" and "having" and any variations thereof in the specification, claims, and drawings of the present application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the existence of a plurality. Unless otherwise specified, "a plurality" means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups).

[0029] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the present application. For example, in the description of the present application, the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0030] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of a mechanical structure may refer to a physical connection, such as a fixed connection, a detachable connection, or an integral connection. The "connection" or "coupling" of a circuit structure may refer to not only a physical connection but also an electrical connection or a signal connection. For example, it may be a direct connection, that is, a physical connection, or it may be indirectly connected through at least one intermediate element, as long as the circuit is connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] To facilitate the understanding of the technical solutions of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0032] The embodiments of the present application provide a method for processing a semi-rigid joint precast beam-column. As Figures 1-5 shown, it includes a concrete column 1, end plates 2 are symmetrically installed on both sides of the concrete column 1, stiffeners 3 are symmetrically welded to one side of the two end plates 2, a transverse plate 4 is welded to the bottom ends of the two stiffeners 3, one side of the transverse plate 4 is symmetrically welded to one side of the end plate 2, the two transverse plates 4 are installed at the upper and lower ends of a concrete beam 5, first threaded holes 6 are symmetrically opened on the outer walls of the concrete column 1, the end plates 2, the transverse plate 4, and the concrete beam 5, first bolts 7 are threadedly connected inside the first threaded holes 6, nuts 9 are threadedly connected to one side of the first bolts 7, and second bolts 10 are threadedly connected to the top ends of the transverse plate 4 and the concrete beam 5.

[0033] Before the concrete column 1 is poured, rectangular end steel plates 2 are embedded at both ends. Stiffening ribs 3 and transverse steel plates 4 are welded to one side of the end steel plate 2 to increase the bearing capacity of the joint. First threaded holes 6 are reserved on the end steel plate 2. The steel bars in the concrete beam 5 are connected to the transverse steel plate 4 by welding. The first bolt 7 on one side of the end steel plate 2 is threadedly installed and threadedly fixed to the nut 9, and then the second bolt 10 is threadedly fixed. When the beam is stressed, the load is transmitted to the transverse steel plate 4, and the transverse steel plate 4 then transmits the force to the stiffening ribs 3 and the end steel plate 2. Finally, the end plate deforms and transmits it to the column, maintaining the continuity of force transmission at the joint. When assembling the concrete beam 5 and the concrete column 1 connected by bolts, the concrete column 1 needs to be temporarily fixed. The concrete beam 5 is lifted by a crane. After aligning the first threaded hole 6 reserved on the end steel plate 2 with the first threaded hole 6 of the concrete column 1, the concrete beam 5 is temporarily fixed. After installing the bolts at both ends of the concrete beam 5, the temporary fixation of the concrete beam 5 and the temporary fixation of the concrete column 1 are removed.

[0034] In the technical solution of the embodiment of the present application, a gasket 8 is sleeved on the outer wall of the first bolt 7, and the gasket 8 is located on the left side of the nut 9.

[0035] The first bolt 7 movably penetrates through the concrete column 1 and is threadedly connected to the nut 9, and the first bolt 7 also penetrates through the gasket 8. The contact area is increased through the gasket 8 to improve the firmness of the threaded installation.

[0036] In the technical solution of the embodiment of the present application, strengthening steel plates 11 are installed on the four sides of the outer wall of the concrete column 1. Second threaded holes 12 are symmetrically arranged on the outer walls of the concrete column 1 and the strengthening steel plates 11, and third bolts 13 are threadedly connected to the second threaded holes 12.

[0037] After installing the strengthening steel plates 11 on the four sides on the outer walls of the four sides of the concrete column 1, the third bolts 13 are screwed to fix the strengthening steel plates 11 on the outer walls of the four sides of the concrete column 1. Then the strengthening steel plates 11 on the four sides are welded so that the strengthening steel plates 11 on the four sides are fixed around the outer wall of the concrete column 1. After the precast column is poured, the column is surrounded by strengthening steel plates at the position of the positioning bolt holes to improve the shear bearing capacity of the concrete in the core area of the beam-column structure.

[0038] In the technical solution of the embodiment of the present application, an installation groove 14 is opened on the outer wall of the concrete column 1. An installation plate 15 is installed inside the installation groove 14. A fourth bolt 16 is threadedly connected to one side of the installation plate 15. One side of the installation plate 15 is hingedly installed with a connecting rod 17, and a support rod 22 is installed at the bottom of the outer wall on one side of the connecting rod 17.

[0039] The installation plate 15 is movably embedded in the installation groove 14, and the fourth bolt 16 is screwed to fix the installation plate 15 in the installation groove 14. Then, when the concrete column 1 is supported by the connecting rod 17 and the support rod 22, the stability of the concrete column 1 is improved, and the bolt connection enables disassembly in the later stage.

[0040] In the technical solution of the embodiment of the present application, a screw rod 18 is threadedly connected to the top of the connecting rod 17. An outer wall of the bottom end of the screw rod 18 is provided with a first bevel gear 19. An outer wall of the first bevel gear 19 is meshed with a second bevel gear 20. A rotating shaft 21 is fixedly installed on one side of the second bevel gear 20. The rotating shaft 21 is sleeved on an outer wall of one side of the support rod 22.

[0041] When the two sides of the concrete column 1 are supported by the connecting rod 17 and the support rod 22, by turning the rotating shaft 21, the second bevel gear 20 is driven to rotate. The second bevel gear 20 meshes to drive the first bevel gear 19 to rotate, and then drives the screw rod 18 to rotate, so that the connecting rod 17 moves in a threaded manner on the outer wall of the screw rod 18. The connecting rod 17 moves upward from the top end of the support rod 22 to increase the overall length. By turning to adjust the angle, the support is made more stable.

[0042] In the technical solution of the embodiment of the present application, an installation pile 23 is provided at the bottom end of the support rod 22.

[0043] After the installation pile 23 is movably embedded in the soil, the contact area of the support rod 22 is increased, and the support firmness and stability of the support rod 22 are improved.

[0044] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0045] As described above, the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A semi-rigid node prefabricated beam-column processing, characterized in that: The invention comprises a concrete column (1), wherein end steel plates (2) are symmetrically installed on both sides of the concrete column (1), stiffening ribs (3) are symmetrically welded to one side of the two end steel plates (2), transverse steel plates (4) are welded to the bottom ends of the two stiffening ribs (3), one side of the transverse steel plate (4) is symmetrically welded to one side of the end steel plate (2), the two transverse steel plates (4) are installed at the upper and lower ends of a concrete beam (5), the outer walls of the concrete column (1), the end steel plates (2), the transverse steel plates (4), and the concrete beam (5) are symmetrically provided with first threaded holes (6), the first threaded holes (6) are threadedly connected to the insides of the first threaded holes (6), a nut (9) is threadedly connected to one side of the first bolt (7), and the top ends of the transverse steel plates (4) and the concrete beam (5) are threadedly connected to second bolts (10).

2. The semi-rigid node prefabricated beam-column processing according to claim 1 is characterized in that: A gasket (8) is sleeved on the outer wall of the first bolt (7), and the gasket (8) is located on the left side of the nut (9).

3. The semi-rigid node prefabricated beam-column processing according to claim 1 is characterized in that: Reinforced steel plates (11) are installed on four sides of the outer wall of the concrete column (1), and second threaded holes (12) are symmetrically arranged on the outer walls of the concrete column (1) and the reinforced steel plates (11), and third bolts (13) are threadedly connected to the second threaded holes (12).

4. The semi-rigid node prefabricated beam-column processing according to claim 1 is characterized in that: The outer wall of the concrete column (1) is provided with a mounting groove (14), a mounting plate (15) is installed inside the mounting groove (14), a fourth bolt (16) is threadedly connected to one side of the mounting plate (15), a connecting rod (17) is hingedly installed on one side of the mounting plate (15), and a support rod (22) is arranged and installed at the bottom end of the outer wall of one side of the connecting rod (17).

5. The semi-rigid node prefabricated beam-column processing according to claim 4 is characterized in that: The top of the connecting rod (17) is threadedly connected to a screw rod (18); a first bevel gear (19) is mounted on the outer wall of the bottom end of the screw rod (18); a second bevel gear (20) is meshingly connected to the outer wall of the first bevel gear (19); a rotating shaft (21) is fixedly mounted on one side of the second bevel gear (20); and the rotating shaft (21) is sleeved on one side of the outer wall of the support rod (22).

6. The semi-rigid node prefabricated beam-column processing according to claim 4 is characterized in that: A mounting pile (23) is arranged and mounted on the bottom end of the support rod (22).

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