Fabricated beam-column joint adopting dry and wet combined connection

Abstract

The utility model discloses an assembly type beam-column joint adopting dry and wet combined connection. The assembly type beam-column joint comprises a prefabricated column and a prefabricated notched beam. The bottom of the core area is provided with a built-in positioning bearing table of an outward-extending column, the bearing table is in lap joint with the notch beam, the bearing table is formed by welding two horizontal steel plates with holes and two vertical steel plates, meanwhile, the bottom steel plate is welded with a longitudinal bar at the bottom of the beam end, and a first connecting point is in dry type connection; upper longitudinal bars at the two ends of the prefabricated notched beam are connected in a joint core area through an adjustable mechanical sleeve, high-toughness early strength concrete added with a cementing material and silicate rapid hardening cement is poured later, and wet connection of a second connecting point is formed; the prefabricated beam column longitudinal bars and the core area are provided with stirrups. The built-in positioning bearing table improves the bearing capacity of the joint, stress is reliable, the round holes in the plate can be used for positioning the longitudinal bars, and construction and installation are convenient; the beam longitudinal bars are connected through the mechanical sleeves, construction is easy and convenient, force transmission is clear, the stress performance is good, and the integrity and the assembly efficiency of the beam-column joint can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to an assembled beam-column node connected by a dry-wet method. Background Art

[0002] Prefabricated buildings are a type of construction that uses prefabricated components and is assembled on site. Compared with the original cast-in-place construction, the workload is greatly reduced, which is beneficial for saving resources, improving labor productivity and quality and safety levels.

[0003] Prefabricated beam-column joints are generally composed of prefabricated columns, prefabricated beams and post-cast concrete, and the connection methods are usually divided into dry connection and wet connection. Dry connection basically does not require pouring concrete, which reduces the workload and shortens the construction period, but the integrity and seismic performance of the joint are poor; wet connection nodes have good integrity, but the on-site workload is large, the difficulty is high, and the construction period is long. In summary, how to provide a prefabricated beam-column joint that is easy to construct and has good connection performance is an urgent problem to be solved in the field of prefabricated buildings. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an assembled beam-column node connected by a combination of dry and wet methods, wherein a built-in positioning support platform for the outwardly extending column is provided at the bottom of the core area, thereby improving the node bearing capacity and facilitating construction.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A prefabricated beam-column node connected by a dry-wet method, comprising a prefabricated notched beam, a prefabricated column, a prefabricated built-in positioning support platform, a first connection point, column longitudinal reinforcement, beam longitudinal reinforcement, and a second connection point;

[0007] The notch of the prefabricated notched beam is on the lower side and the protrusion is on the upper side. The prefabricated built-in positioning support platform is arranged on the prefabricated column. The prefabricated built-in positioning support platform extends to the outside in the core area of ​​the assembled beam-column node and overlaps with the prefabricated notched beam;

[0008] The longitudinal reinforcement of the bottom beam of the prefabricated notched beam extends outward from the beam cross section and is welded to the bottom steel plate of the prefabricated built-in positioning support platform to form a first connection point;

[0009] The upper longitudinal reinforcements of the two ends of the prefabricated notched beam are connected in the core area of ​​the assembled beam-column node through an adjustable mechanical sleeve to form a second connection point;

[0010] Pouring high-toughness early-strength concrete in the core area of ​​the assembled beam-column node and the extended section area of ​​the prefabricated built-in positioning support platform;

[0011] The first connection point is a dry connection, and the second connection point is a wet connection.

[0012] Preferably, the end of the beam longitudinal reinforcement is provided with an external thread for connecting to the adjustable mechanical sleeve.

[0013] Preferably, the prefabricated built-in positioning support platform is welded by two horizontal steel plates and two vertical steel plates, and the horizontal steel plates are provided with reserved holes for positioning and passing the column longitudinal reinforcement.

[0014] Preferably, the bottom surface of the extended section of the prefabricated notched beam overlaps the upper surface of the prefabricated built-in positioning support platform.

[0015] Preferably, the length of the upper overhanging section of the prefabricated notched beam is the same as the length of the overhanging column of the prefabricated built-in positioning support platform.

[0016] Beneficial effects: The built-in positioning support platform of the utility model is in contact with the prefabricated beam and welded to the bottom longitudinal reinforcement. The longitudinal reinforcement of the beam is connected in the core area by an adjustable mechanical sleeve. Compared with the traditional connection method, this composite connection method not only improves the node bearing capacity, but also facilitates construction, reduces on-site workload, and improves construction efficiency; and the post-cast high-toughness early-strength concrete enhances the integrity and seismic resistance of the node compared to only using dry connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the assembled node provided by the utility model;

[0018] Figure 2 A schematic diagram of the structure of the core area of ​​the assembled node provided by the utility model;

[0019] Figure 3 This is a structural schematic diagram of the built-in positioning support platform of the assembled node provided by the utility model;

[0020] Reference numerals:

[0021] 1. Prefabricated notched beam; 2. Prefabricated column; 3. Prefabricated built-in positioning support platform; 4. First connection point; 5. Column longitudinal reinforcement; 6. Beam longitudinal reinforcement; 7. Second connection point; 8. Horizontal steel plate; 9. Vertical steel plate; 10. Reserved hole. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Please refer to Figure 1-3 As shown, a prefabricated beam-column node connected by a combination of dry and wet methods comprises a prefabricated notched beam 1, a prefabricated column 2, a prefabricated built-in positioning support platform 3, a first connection point 4, a column longitudinal reinforcement 5, a beam longitudinal reinforcement 6, and a second connection point 7;

[0024] The notch of the prefabricated notched beam 1 is on the lower side and the protrusion is on the upper side. The prefabricated built-in positioning support platform 3 is arranged on the prefabricated column 2. The prefabricated built-in positioning support platform 3 extends to the outside in the core area of ​​the assembled beam-column node and overlaps with the prefabricated notched beam 1;

[0025] The longitudinal reinforcement 6 at the bottom of the prefabricated notched beam 1 extends outward from the beam cross section and is welded to the bottom steel plate of the prefabricated built-in positioning support platform 3 to form a first connection point 4;

[0026] The upper beam longitudinal reinforcements 6 at both ends of the prefabricated notched beam 1 are connected by an adjustable mechanical sleeve in the core area of ​​the assembled beam-column node to form a second connection point 7; the ends of the beam longitudinal reinforcements 6 are provided with external threads for connection with the adjustable mechanical sleeve.

[0027] The prefabricated built-in positioning support platform 3 is welded by two horizontal steel plates 8 and two vertical steel plates 9. The horizontal steel plates 8 are provided with reserved holes 10 for positioning and passing the column longitudinal reinforcement 5. The bottom surface of the extended section of the prefabricated notched beam 1 overlaps the upper surface of the prefabricated built-in positioning support platform 3. The length of the upper extended section of the prefabricated notched beam 1 is the same as the length of the extended column of the prefabricated built-in positioning support platform 3.

[0028] Formwork is provided in the core area of ​​the assembled beam-column node and the extended section area of ​​the prefabricated built-in positioning support platform 3, and high-toughness early-strength concrete with cementitious materials and silicate cement is poured later, so that the node reaches sufficient strength to become a whole after 48 hours of curing. This not only improves the node bearing capacity, enhances the integrity and seismic performance of the node, but also facilitates construction, reduces on-site workload, and improves construction efficiency.

[0029] The first connection point 4 is a dry connection, and the second connection point 7 is a wet connection.

[0030] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prefabricated beam-column joint connected by a dry and wet method, characterized in that: It includes a prefabricated notched beam, a prefabricated column, a prefabricated built-in positioning support platform, a first connection point, a column longitudinal reinforcement, a beam longitudinal reinforcement and a second connection point; The notch of the prefabricated notched beam is on the lower side and the protrusion is on the upper side. The prefabricated built-in positioning support platform is arranged on the prefabricated column. The prefabricated built-in positioning support platform extends to the outside in the core area of ​​the assembled beam-column node and overlaps with the prefabricated notched beam; The longitudinal reinforcement of the bottom beam of the prefabricated notched beam extends outward from the beam cross section and is welded to the bottom steel plate of the prefabricated built-in positioning support platform to form a first connection point; The upper longitudinal beam reinforcements at both ends of the prefabricated notched beam are connected in the core area of ​​the assembled beam-column node through an adjustable mechanical sleeve to form a second connection point; Pouring high-toughness early-strength concrete in the core area of ​​the assembled beam-column node and the extended section area of ​​the prefabricated built-in positioning support platform; The first connection point is a dry connection, and the second connection point is a wet connection.

2. The assembled beam-column node of claim 1, characterized in that: The end of the beam longitudinal reinforcement is provided with an external thread for connecting with the adjustable mechanical sleeve.

3. The assembled beam-column node of claim 2, characterized in that: The prefabricated built-in positioning support platform is formed by welding two horizontal steel plates and two vertical steel plates. The horizontal steel plates are provided with reserved holes for positioning and passing the column longitudinal reinforcement.

4. The assembled beam-column node of claim 3, characterized in that: The bottom surface of the extended section of the prefabricated notched beam is overlapped with the upper surface of the prefabricated built-in positioning support platform.

5. The assembled beam-column node of claim 4, characterized in that: The length of the upper outward extension section of the prefabricated notched beam is the same as the length of the outward extension column of the prefabricated built-in positioning support platform.

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