Novel connecting joint of reinforced concrete beam and section steel column
By using steel plates to replace longitudinal steel bars in the connection nodes between reinforced concrete beams and steel columns, and welding outside the core area of the node, the problem of dense steel bars and insufficient welding space in traditional nodes is solved, the welding quality and construction efficiency are improved, and the welding efficiency is simplified. structure.
Patent Information
- Application Number
- CN202421003346.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The connection nodes between traditional reinforced concrete beams and steel columns are densely packed with steel bars in the core area of the beam and column nodes, and the welding space is insufficient, making welding quality difficult to ensure, and the labor is used and the construction period is long.
All longitudinal steel bars in the core area of the beam and column node are replaced by steel plates. The steel plate is welded with the steel column factory, and the steel bars are welded outside the core area of the node. Column cross-dividing plates, vertical connecting plates of steel columns, upper flange steel plates, and lower wings of beams are used. A connecting node structure composed of edge steel plate and beam web.
It solves the problem of dense steel bars and insufficient welding space in the node core area, improves welding quality and construction efficiency, simplifies the structure, and is suitable for most reinforced concrete beams and steel column connection nodes.
Smart Images
Figure CN222295322U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of civil engineering, in particular to a novel connection node between a reinforced concrete beam and a steel column. Background Art
[0002] Steel-reinforced concrete structures (or steel-framed concrete structures) are composed of hot-rolled or welded steel, tied longitudinal steel bars and horizontal stirrups, and poured concrete. In recent years, steel-reinforced concrete structures have been increasingly widely used in high-rise and super-high-rise buildings because they have the advantages of both steel and concrete structures, high bearing capacity, good earthquake resistance, and can reduce project costs, shorten construction periods, and save materials.
[0003] The node is the key part connecting the beam and the column. The internal force of the beam and the column is transmitted through the node. The safety and reliability of the node is the premise to ensure the safe operation of the structure. However, the connection node between the traditional reinforced concrete beam and the steel column has the defects of difficult to ensure welding quality, high labor cost and long construction period due to the dense steel bars in the core area of the beam-column node and insufficient welding space. Utility Model Content
[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a new connection node between a reinforced concrete beam and a steel column.
[0005] According to the new type of connection node between reinforced concrete beam and steel column provided by the utility model, the connection node is located at the intersection of the steel column and the reinforced concrete beam, and is used for connecting the steel column and the reinforced concrete beam, including a column diaphragm, a steel column vertical connection plate, a beam upper flange steel plate and a beam lower flange steel plate;
[0006] There are two column diaphragms, which are respectively located at the top and bottom of the connection node and are both welded to the steel sections of the steel columns;
[0007] The vertical connecting plate of the steel column is welded inside the steel column, and its two ends are respectively welded to the column longitudinal reinforcement of the steel column located at the upper and lower parts of the connection node;
[0008] The upper flange steel plate and the lower flange steel plate of the beam are both welded to the outside of the steel section, and are respectively welded to the top reinforcement and bottom reinforcement of the reinforced concrete beam;
[0009] The beam upper flange steel plate and the beam lower flange steel plate are respectively located in the same plane as the column transverse diaphragm located at the top of the connection node and the column transverse diaphragm located at the bottom of the connection node.
[0010] Preferably, it also includes a beam web steel plate, which is welded to the outside of the steel section, and the upper and lower sides of the beam web steel plate are respectively welded to the bottom of the beam upper flange steel plate and the top of the beam lower flange steel plate.
[0011] Preferably, the welding points of the vertical connecting plate of the steel column and the column longitudinal reinforcement, the welding points of the upper flange steel plate of the beam and the top reinforcement of the beam, and the welding points of the lower flange steel plate of the beam and the bottom reinforcement of the beam are all located outside the connection node.
[0012] Preferably, the length of the weld between the steel column vertical connection plate and the column longitudinal reinforcement is not less than five times the diameter of the column longitudinal reinforcement;
[0013] The length of the weld between the upper flange steel plate of the beam and the top reinforcement of the beam shall not be less than five times the diameter of the top reinforcement of the beam;
[0014] The length of the weld between the beam lower flange steel plate and the beam bottom reinforcement is not less than five times the diameter of the beam bottom reinforcement.
[0015] Preferably, the beam upper flange steel plate is a beam upper flange flat plate or a beam upper flange multi-fold plate. When the beam top reinforcement is single-row, the beam upper flange steel plate is an upper flange flat plate, and the beam upper flange flat plate is welded to the single-row beam top reinforcement.
[0016] When the beam top reinforcement includes multiple rows of different heights, the beam upper flange steel plate is a beam upper flange multi-fold plate, and the beam upper flange multi-fold plate includes multiple flat plates with different heights and arranged in sequence. The number of the flat plates is the same as the number of rows of beam top reinforcement, and the multiple flat plates are respectively welded to the multiple rows of beam top reinforcement.
[0017] Preferably, the beam lower flange steel plate is a beam lower flange flat plate or a beam lower flange multi-fold plate. When the beam bottom reinforcement is a single row, the beam lower flange steel plate is a beam lower flange flat plate, and the beam lower flange flat plate is welded to the single row beam bottom reinforcement.
[0018] When the beam bottom reinforcement includes multiple rows of different heights, the beam lower flange steel plate is a beam lower flange multi-fold plate, and the beam lower flange multi-fold plate includes multiple flat plates with different heights and arranged in sequence. The number of the flat plates is the same as the number of rows of beam bottom reinforcement, and the multiple flat plates are respectively welded to the multiple rows of beam bottom reinforcement.
[0019] Preferably, the folding plate slopes of the multi-folding plates on the upper flange of the beam and the multi-folding plates on the lower flange of the beam are both not greater than 1:1 and not less than 1:4.
[0020] Preferably, stiffening ribs are provided at the bending positions of the bottom of the multi-fold plate on the upper flange of the beam and the top of the multi-fold plate on the lower flange of the beam.
[0021] Preferably, there are multiple steel column vertical connection plates, and the multiple steel column vertical connection plates are welded to the multiple column longitudinal reinforcements in a one-to-one correspondence.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] The utility model has a simple structure. On the basis of the connection node between the traditional reinforced concrete beam and the steel column, all the longitudinal steel bars in the core area of the beam-column node are replaced by steel plates. The steel plates and the steel columns are welded in the factory, and the steel bars and steel plates in the core area of the beam-column node are welded outside the core area of the node. On the premise of ensuring reliable force transmission, the utility model solves the problems of dense steel bars in the core area of the node, insufficient welding space, difficulty in ensuring welding quality, high labor cost and long construction period. The utility model is suitable for most connection nodes between reinforced concrete beams and steel columns. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0025] Figure 1 It is a side view structural schematic diagram of the utility model;
[0026] Figure 2 for Figure 1 A cross-sectional view along the 1-1 direction;
[0027] Figure 3 for Figure 1 Cross-sectional view along direction 2-2.
[0028] The figure shows:
[0029] Steel column 1 Beam lower flange steel plate 7
[0030] Reinforced concrete beam 2 Beam web steel plate 8
[0031] Steel 3 Column longitudinal reinforcement 9
[0032] Column diaphragm 4 Beam top reinforcement 10
[0033] Vertical connection plate of steel column 5 Beam bottom reinforcement 11
[0034] Beam flange steel plate 6 Stiffening rib 12 DETAILED DESCRIPTION
[0035] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.
[0036] The utility model discloses a novel connection node between reinforced concrete beams and steel columns, in which all longitudinal steel bars in the core area of the beam-column node are replaced by steel plates, the steel plates are welded to the steel columns in a factory, and the steel bars in the core area of the beam-column node and the steel plates are welded outside the core area of the node. On the premise of ensuring reliable force transmission, the problem of dense steel bars in the core area of the node, insufficient welding space and difficulty in ensuring welding quality is solved.
[0037] According to the new type of connection node between reinforced concrete beam and steel column provided by the utility model, Figure 1-3 As shown, the connection node is located at the intersection of the steel column 1 and the reinforced concrete beam 2, and is used for connecting the steel column 1 and the reinforced concrete beam 2, and is characterized in that it includes a column diaphragm 4, a steel column vertical connection plate 5, a beam upper flange steel plate 6, a beam lower flange steel plate 7 and a beam web steel plate 8;
[0038] like Figure 1 As shown, there are two column diaphragms 4, which are respectively located at the top and bottom of the connection node, and are both welded to the steel section 3 of the steel column 1; the steel column vertical connection plate 5 is welded to the inside of the steel column 1, and its two ends are respectively welded to the column longitudinal reinforcement 9 of the steel column 1 located at the upper and lower parts of the connection node; the beam upper flange steel plate 6 and the beam lower flange steel plate 7 are both welded to the outside of the steel section 3, and are respectively welded to the beam top reinforcement 10 and the beam bottom reinforcement 11 of the reinforced concrete beam 2; the beam upper flange steel plate 6 and the beam lower flange steel plate 7 are respectively located in the same plane with the column diaphragm 4 located at the top of the connection node and the column diaphragm 4 located at the bottom of the connection node; the beam web steel plate 8 is welded to the outside of the steel section 3, and the upper and lower sides of the beam web steel plate 8 are respectively welded to the bottom of the beam upper flange steel plate 6 and the top of the beam lower flange steel plate 7.
[0039] In a preferred embodiment, the welding points of the steel column vertical connection plate 5 and the column longitudinal reinforcement 9, the welding points of the beam upper flange steel plate 6 and the beam top reinforcement 10, and the welding points of the beam lower flange steel plate 7 and the beam bottom reinforcement 11 are all located outside the connection node. The weld length between the steel column vertical connection plate 5 and the column longitudinal reinforcement 9 is not less than five times the diameter of the column longitudinal reinforcement 9; the weld length between the beam upper flange steel plate 6 and the beam top reinforcement 10 is not less than five times the diameter of the beam top reinforcement 10; the weld length between the beam lower flange steel plate 7 and the beam bottom reinforcement 11 is not less than five times the diameter of the beam bottom reinforcement 11. There are multiple steel column vertical connection plates 5, and multiple steel column vertical connection plates 5 are welded to multiple column longitudinal reinforcements 9 in a one-to-one correspondence.
[0040] The beam flange steel plate 6 is a beam flange flat plate or a beam flange multi-fold plate. When the beam top reinforcement 10 is a single row, the beam flange steel plate 6 is an upper flange flat plate, and the beam flange flat plate is welded to the single row of beam top reinforcement 10; when the beam top reinforcement 10 includes multiple rows of different heights, the beam flange steel plate 6 is a beam flange multi-fold plate, and the beam flange multi-fold plate includes multiple flat plates with different heights and arranged in sequence, the number of the flat plates is the same as the number of rows of the beam top reinforcement 10, and the multiple flat plates are respectively welded to the multiple rows of beam top reinforcement 10.
[0041] The beam lower flange steel plate 7 is a beam lower flange flat plate or a beam lower flange multi-fold plate. When the beam bottom reinforcement 11 is a single row, the beam lower flange steel plate 7 is a beam lower flange flat plate, and the beam lower flange flat plate is welded to the single row of beam bottom reinforcement 11; when the beam bottom reinforcement 11 includes multiple rows of different heights, the beam lower flange steel plate 7 is a beam lower flange multi-fold plate, and the beam lower flange multi-fold plate includes multiple flat plates of different heights and arranged in sequence, and the number of the flat plates is the same as the number of rows of the beam bottom reinforcement 11, and the multiple flat plates are respectively welded to the multiple rows of beam bottom reinforcement 11. The folding plate slopes of the beam upper flange multi-fold plate and the beam lower flange multi-fold plate are not greater than 1:1, and are not less than 1:4. The bottom of the beam upper flange multi-fold plate and the top of the beam lower flange multi-fold plate are both provided with stiffening ribs 12 at the bends.
[0042] Example 1
[0043] This embodiment is a preferred embodiment of the above basic embodiment, and provides a new type of connection node between reinforced concrete beams and steel columns, which is composed of steel columns 1, reinforced concrete beams 2, steel sections 3, column transverse diaphragms 4, steel column vertical connection plates 5, beam upper flange steel plates 6, beam lower flange steel plates 7, beam web steel plates 8, column longitudinal reinforcements 9, beam top reinforcements 10, beam bottom reinforcements 11, and stiffening ribs 12. The column transverse plate 4, steel column vertical connection plates 5, beam upper flange steel plates 6, beam lower flange steel plates 7, and beam web steel plates 8 are welded to the steel columns 1 in the factory, and the column longitudinal reinforcements 9, beam top reinforcements 10, and beam bottom reinforcements 11 are respectively welded on site to the steel column vertical connection plates 5, beam upper flange steel plates 6, and beam lower flange steel plates 7 outside the core area of the node, using arc welding technology and double-sided welding, and the weld length is not less than 5 times the diameter of the steel bars.
[0044] The upper flange steel plate 6 of the beam can be made into a flat plate 13, a single folded plate 14, and a double folded plate 15 according to the top reinforcement 10 of the beam; the lower flange steel plate 7 of the beam can be made into a flat plate 16, a single folded plate 17, and a double folded plate 18 according to the number of rows of the bottom reinforcement 11 of the beam. The folding plate slope of the upper flange steel plate 6 of the beam made into a single folded plate 13, a double folded plate 14 and the lower flange steel plate 7 made into a single folded plate 17, a double folded plate 18 shall not be greater than 1:1, nor less than 1:4. The upper flange single folded plate 14, a double folded plate 15 of the beam and the lower flange single folded plate 17, a double folded plate 18 of the beam need to be provided with stiffening ribs 12 at the bending part to balance the vertical force of the steel plate.
[0045] The utility model has no longitudinal reinforcement in the core area of the node between the reinforced concrete beam and the steel column, so the construction is more convenient. The connecting plate is welded in the factory, so the welding quality is guaranteed, the force transmission is more reliable, and there is no overhead welding between the steel bars and the steel plates on site, so the operation is convenient, the welding quality is guaranteed, the force transmission is more reliable, and the construction period is saved.
[0046] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0047] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.
Claims
1. A new type of connection node between a reinforced concrete beam and a steel column, the connection node is located at the intersection of the steel column (1) and the reinforced concrete beam (2), and is used for connecting the steel column (1) and the reinforced concrete beam (2), characterized in that: It comprises a column diaphragm (4), a steel column vertical connection plate (5), a beam upper flange steel plate (6) and a beam lower flange steel plate (7); There are two column diaphragms (4), which are respectively located at the top and bottom of the connection node and are both welded to the steel section (3) of the steel section column (1); The steel column vertical connection plate (5) is welded inside the steel column (1), and its two ends are respectively welded to the column longitudinal reinforcement (9) of the steel column (1) located at the upper and lower parts of the connection node; The upper beam flange steel plate (6) and the lower beam flange steel plate (7) are both welded to the outside of the section steel (3), and are respectively welded to the top beam reinforcement (10) and the bottom beam reinforcement (11) of the reinforced concrete beam (2); The beam upper flange steel plate (6) and the beam lower flange steel plate (7) are respectively located in the same plane as the column transverse diaphragm (4) located at the top of the connection node and the column transverse diaphragm (4) located at the bottom of the connection node.
2. The new type of connection node between reinforced concrete beam and steel column according to claim 1 is characterized in that: It also includes a beam web steel plate (8), which is welded to the outside of the steel section (3), and the upper and lower sides of the beam web steel plate (8) are respectively welded to the bottom of the beam upper flange steel plate (6) and the top of the beam lower flange steel plate (7).
3. The new type of connection node between reinforced concrete beam and steel column according to claim 1 is characterized in that: The welding points of the steel column vertical connection plate (5) and the column longitudinal reinforcement (9), the welding points of the beam upper flange steel plate (6) and the beam top reinforcement (10), and the welding points of the beam lower flange steel plate (7) and the beam bottom reinforcement (11) are all located outside the connection node.
4. The new type of connection node between reinforced concrete beam and steel column according to claim 1 is characterized in that: The length of the weld between the steel column vertical connection plate (5) and the column longitudinal reinforcement (9) is not less than five times the diameter of the column longitudinal reinforcement (9); The length of the weld between the upper flange steel plate (6) of the beam and the top reinforcement (10) of the beam is not less than five times the diameter of the top reinforcement (10) of the beam; The length of the weld between the beam lower flange steel plate (7) and the beam bottom reinforcement (11) is not less than five times the diameter of the beam bottom reinforcement (11).
5. The new type of connection node between reinforced concrete beam and steel column according to claim 1 is characterized in that: The beam upper flange steel plate (6) is a beam upper flange flat plate or a beam upper flange multi-fold plate. When the beam top reinforcement (10) is a single row, the beam upper flange steel plate (6) is an upper flange flat plate. The beam upper flange flat plate is welded to the single row beam top reinforcement (10). When the beam top reinforcement (10) includes multiple rows of different heights, the beam upper flange steel plate (6) is a beam upper flange multi-fold plate, and the beam upper flange multi-fold plate includes multiple flat plates of different heights and arranged in sequence, the number of the flat plates is the same as the number of rows of the beam top reinforcement (10), and the multiple flat plates are respectively welded to the multiple rows of beam top reinforcement (10).
6. The new type of connection node between reinforced concrete beam and steel column according to claim 5 is characterized in that: The beam lower flange steel plate (7) is a beam lower flange flat plate or a beam lower flange multi-fold plate. When the beam bottom reinforcement (11) is a single row, the beam lower flange steel plate (7) is a beam lower flange flat plate, and the beam lower flange flat plate is welded to the single row beam bottom reinforcement (11); When the beam bottom reinforcement (11) includes multiple rows of different heights, the beam bottom flange steel plate (7) is a beam bottom flange multi-fold plate, and the beam bottom flange multi-fold plate includes multiple flat plates of different heights and arranged in sequence, the number of the flat plates is the same as the number of rows of the beam bottom reinforcement (11), and the multiple flat plates are respectively welded to the multiple rows of beam bottom reinforcement (11).
7. The novel connection node between reinforced concrete beam and steel column according to claim 6 is characterized in that: The folding plate slopes of the multiple folding plates on the upper flange of the beam and the multiple folding plates on the lower flange of the beam are both not greater than 1:1 and not less than 1:
4.
8. The novel connection node between reinforced concrete beam and steel column according to claim 6 is characterized in that: The bottom of the multi-fold plate on the upper flange of the beam and the top of the multi-fold plate on the lower flange of the beam are both provided with stiffening ribs (12) at the bending positions.
9. The novel connection node between reinforced concrete beam and steel column according to claim 1 is characterized in that: The number of the steel column vertical connection plates (5) is multiple, and the multiple steel column vertical connection plates (5) are welded to the multiple column longitudinal bars (9) in a one-to-one correspondence.