Steel reinforced concrete joint prefabricated and connected by reinforcing steel bars and section steel in factory
By setting variable height cross-section in the middle of the beam and steel section at the concrete node of the steel section and pre-fixing of the factory to connect the steel bars, the problem of difficult to guarantee the quality of welding connections in the prior art is solved, the concrete construction quality and welding efficiency are improved, and the on-site construction process is simplified.
Patent Information
- Application Number
- CN202421034127.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-13
AI Technical Summary
Welding connections of existing steel-shaped concrete structures are difficult to ensure quality, especially when there are many longitudinal ribs on the bottom surface, artificial backwelding is time-consuming and labor-intensive, and the narrow space in the steel makes it difficult to guarantee the pouring density.
Design a steel concrete node prefabricated connection of steel bars and steel factories, and set a variable height cross-section in the middle of the beam steel to provide a large pouring and adjustment space to avoid welding difficulties, and pre-fix the connecting steel bars in the factory to simplify on-site construction.
It improves the quality of concrete construction and welding efficiency, reduces the difficulty and workload of on-site operations, and ensures the compactness of the connection and the stability of the overall structure.
Smart Images
Figure CN222275777U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building structures, in particular to a steel-concrete node for prefabricated connection of steel bars and steel sections in a factory. Background Art
[0002] Steel-concrete structure, also known as steel-framed concrete structure or rigid reinforced concrete structure, is a structure in which steel (steel frame) is embedded in concrete. Common steel-concrete structures include steel-concrete beams, steel-concrete columns and steel-concrete walls. In order to form the above structures into a solid whole, it is often necessary to set a connection structure between them. In the prior art, the common connection structure between steel-concrete columns and steel-concrete beams is a welding structure, which has the following problems:
[0003] The steel connection plates of the steel columns in the steel concrete columns are welded to the longitudinal bars of the steel concrete beams one by one to form a welded structure. If there are many longitudinal bars on the bottom surface, a large amount of overhead welding is required, which makes on-site operations more difficult, and welding is time-consuming and labor-intensive, and the welding quality is difficult to guarantee.
[0004] In addition, the above structures all require partitions to be set at the positions corresponding to the connecting plates in the steel sections to transfer the tensile pressure of the steel bars. Since the partitions are close to the steel sections, there are narrow spaces in the steel sections that are difficult to cast and compact, and the construction quality is difficult to guarantee. Utility Model Content
[0005] The utility model provides a steel-concrete node prefabricated and connected by reinforcing bars and steel sections in a factory, which is used to solve the problems existing in the prior art.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A steel-concrete node prefabricated with steel bars and steel sections in a factory comprises a concrete column, a concrete beam, a column steel section and a beam steel section; the column steel section is buried in the concrete column, the end of the beam steel section is fixedly connected to the column steel section, and the beam body of the beam steel section is buried in the concrete beam; a gradient-shrinking variable height cross-section portion is provided in the middle of the beam steel section, an upper steel section flange for connecting steel bars is provided at the shrinking head end on the top side of the variable height cross-section portion, and a lower steel section flange for connecting steel bars is provided at the shrinking head end on the bottom side of the variable height cross-section portion.
[0008] Through the above technical solution, a variable height section is set at the steel bar welding point in the middle of the beam, which can provide a larger pouring space for the steel bars, thereby avoiding the situation where the steel bars and their corresponding partitions are difficult to pour and compact, and can also avoid the situation where the outer wall of the beam steel or the connecting steel plate hinders the welding of the column steel bars, thereby improving the quality of concrete construction. In addition, the variable height section of the above beam steel provides personnel with a larger construction space and steel bar adjustment space, which can improve the efficiency and quality of manual overhead welding of steel bars, thereby reducing the workload and difficulty of on-site operations.
[0009] Preferably, the beam steel includes a first horizontal beam plate, a first inclined plate, a second horizontal beam plate, a third horizontal beam plate, a second inclined plate and a fourth horizontal beam plate; the first horizontal beam plate, the first inclined plate and the second horizontal beam plate are all located at the top of the concrete beam, the end of the first horizontal beam plate is fixedly connected to the side wall of the column steel, the end of the first inclined plate is fixedly connected to the end of the first horizontal beam plate away from the column steel, the second horizontal beam plate is fixedly connected to the end of the first inclined plate away from the first horizontal beam plate, and the height of the first inclined plate head end is higher than the height of the first inclined plate end; the third horizontal beam plate, the second inclined plate and the fourth horizontal beam plate are all located at the bottom of the concrete beam, the end of the third horizontal beam plate is fixedly connected to the side wall of the column steel, the end of the second inclined plate is fixedly connected to the end of the third horizontal beam plate away from the column steel, and the fourth horizontal beam plate is fixedly connected to the end of the second inclined plate away from the third horizontal beam plate; the height of the first end of the second inclined plate is lower than the height of the end of the second inclined plate; the upper steel flange is located at the connection between the first horizontal beam plate and the first inclined plate, and the lower steel flange is located at the connection between the third horizontal beam plate and the second inclined plate.
[0010] Preferably, it also includes a first beam top surface steel bar, wherein a plurality of first beam top surface steel bars are respectively located on both sides of the beam steel, one end of the first beam top surface steel bar is buried in the concrete column, and the other end is buried in the concrete beam.
[0011] Preferably, it also includes a second beam top surface steel bar, a plurality of second beam top surface steel bars are located on the top side of the beam steel, the ends of the second beam top surface steel bars are fixedly connected to the connection between the first horizontal beam plate and the first inclined plate, and the second beam top surface steel bars are buried in the concrete beam.
[0012] Preferably, it also includes beam bottom surface steel bars, a plurality of beam bottom surface steel bars are horizontally arranged on the bottom side of the beam steel, and the ends of the beam bottom surface steel bars are fixedly connected to the connection between the third horizontal beam plate and the second inclined plate.
[0013] Preferably, it also includes an oblique steel rod, which is located on the top side of the beam steel, and the same end of the oblique steel rod is obliquely fixedly connected to the side wall of the column steel and the first horizontal beam plate.
[0014] Preferably, it also includes column reinforcement, and the end of the inclined steel rod connected to the column steel is vertically provided with a first reinforcement sleeve for connecting the column reinforcement, and the third horizontal beam slab is vertically provided with a second reinforcement sleeve for connecting the column reinforcement; the column reinforcement, the first reinforcement sleeve and the second reinforcement sleeve are all buried in the concrete column.
[0015] The beneficial effects of the utility model are:
[0016] 1. Compared with the existing technology, the variable height section of the middle part of the beam steel at the steel bar welding point can provide a larger pouring space for the steel bars, thereby avoiding the situation where the steel bars and their corresponding partitions are difficult to pour and compact, and can also avoid the situation where the outer wall of the beam steel or the connecting steel plate hinders the welding of the column steel bars, thereby improving the quality of concrete construction. In addition, the variable height section of the above-mentioned beam steel provides construction personnel with a larger construction space and steel bar adjustment space, which can improve the efficiency and quality of manual overhead welding of steel bars, thereby reducing the workload and difficulty of on-site operations.
[0017] 2. Compared with the existing technology, the beam steel adopts a variable height section at the reinforcement connection node (i.e., the connection between the third horizontal beam slab and the second inclined slab), which can avoid the third horizontal beam slab and its corresponding partition from forming a narrow space that is difficult to cast densely, and also avoid the second inclined slab blocking the column reinforcement from connecting to the second reinforcement sleeve, which is conducive to further improving the quality of concrete construction.
[0018] 3. Compared with the existing technology, the top steel bars and bottom steel bars of the second beam can be pre-fixed in the factory on the upper steel flange (i.e., the connection between the first horizontal beam plate and the first inclined plate) and the lower steel flange (i.e., the connection between the third horizontal beam plate and the second inclined plate) of the concrete beam, which is beneficial to ensure the overall connection quality and simplify the on-site construction process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the steel-concrete node after pouring in which the steel bars and steel sections are prefabricated in the factory in the embodiment of the utility model;
[0020] Figure 2 It is a top view of the steel-concrete node in which the steel bars and steel sections are prefabricated in the factory and connected in the embodiment of the utility model, after the inclined steel rods are removed after pouring;
[0021] Figure 3 It is a structural schematic diagram of a steel-concrete node in which reinforcing bars and steel sections are prefabricated in a factory before pouring in an embodiment of the utility model.
[0022] Description of reference numerals:
[0023] 1. Concrete column; 11. "L" type steel bar; 2. Concrete beam; 3. Column steel; 31. Horizontal stiffening plate; 4. Beam steel; 41. First horizontal beam-slab; 441. Second steel bar sleeve; 42. First inclined plate; 43. Second horizontal beam-slab; 44. Third horizontal beam-slab; 45. Second inclined plate; 46. Fourth horizontal beam-slab; 47. Vertical stiffening plate; 5. First beam top surface steel bar; 6. Second beam top surface steel bar; 7. Beam bottom surface steel bar; 8. Inclined steel rod; 81. First steel bar sleeve; 9. Column steel bar. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0026] This embodiment discloses a steel-concrete node that is prefabricated and connected by reinforcing bars and steel sections in a factory, and is used to solve the problems existing in the prior art.
[0027] Reference Figure 1-Figure 3 In this embodiment, the steel-concrete node prefabricated with steel bars and steel sections in the factory includes a concrete column 1, a concrete beam 2, a column steel section 3 and a beam steel section 4.
[0028] Specifically, the column steel 3 is buried in the concrete column 1. The end of the beam steel 4 is fixedly connected to the column steel 3, and the beam body is buried in the concrete beam 2. A gradient-contracted variable height section is provided in the middle of the beam steel 4, and an upper steel flange for connecting the steel bar is provided at the shrinking head end of the top side of the variable height section, and a lower steel flange for connecting the steel bar is provided at the shrinking head end of the bottom side of the variable height section.
[0029] In this embodiment, the beam steel 4 and column steel 3 are all prefabricated parts in the factory, which are welded in sections in the factory and then spliced on the construction site.
[0030] Compared with the existing technology, a variable height section is set at the steel bar welding point in the middle of the beam steel 4, which can provide a larger pouring space for the steel bars, thereby avoiding the situation where the steel bars and their corresponding partitions are difficult to pour densely, and can also avoid the situation where the outer wall of the beam steel 4 or the connecting steel plate hinders the welding of the column steel bars, thereby improving the quality of concrete construction.
[0031] Preferably, the utility model further comprises a first beam top surface steel bar 5 , and a plurality of first beam top surface steel bars 5 are respectively located on both sides of the beam steel 4 , one end of the first beam top surface steel bar 5 is buried in the concrete column 1 , and the other end is buried in the concrete beam 2 .
[0032] Compared with the prior art, the spacing between the steel bars 5 on the top surface of the first beam and the steel section is larger, which is easy to pour and further improves the quality of concrete construction.
[0033] Preferably, a plurality of first beam top surface steel bars 5 are respectively welded to both sides of the beam steel 4 .
[0034] like Figure 1 As shown, in this embodiment, the inner wall of the column steel 3 is welded with a transverse stiffening plate 31, and the inner wall of the beam steel 4 is welded with a plurality of vertical stiffening plates 47 to improve the strength of the utility model. The utility model also includes a plurality of "L"-shaped steel bars 11, the "L" end of the "L"-shaped steel bar 11 is buried in the concrete column 1, and the other end is buried in the concrete beam 2 to improve the structural strength after pouring.
[0035] like Figure 2 As shown, the concrete column 1 is in the shape of a rectangular parallelepiped as a whole, and a plurality of column steel bars 9 are embedded in the concrete column 1. The plurality of column steel bars 9 are arranged around the column steel 3 to improve the load-bearing capacity of the utility model.
[0036] like Figure 1 and Figure 3As shown, the beam steel 4 includes a first horizontal beam plate 41, a first inclined plate 42, a second horizontal beam plate 43, a third horizontal beam plate 44, a second inclined plate 45 and a fourth horizontal beam plate 46. In this embodiment, the first horizontal beam plate 41, the first inclined plate 42 and the second horizontal beam plate 43 are all located at the top of the concrete beam 2, the end of the first horizontal beam plate 41 is welded to the side wall of the column steel 3, the end of the first inclined plate 42 is welded to the end of the first horizontal beam plate 41 away from the column steel 3, the second horizontal beam plate 43 is welded to the end of the first inclined plate 42 away from the first horizontal beam plate 41, and the height of the first end of the first inclined plate 42 is higher than the height of the bottom end thereof, that is, the first inclined plate 42 is inclined toward the bottom of the concrete beam 2. The third horizontal beam slab 44, the second inclined plate 45 and the fourth horizontal beam slab 46 are all located at the bottom of the concrete beam 2. The end of the third horizontal beam slab 44 is welded to the side wall of the column steel 3, the end of the second inclined plate 45 is welded to the end of the third horizontal beam slab 44 away from the column steel 3, and the fourth horizontal beam slab 46 is welded to the end of the second inclined plate 45 away from the third horizontal beam slab 44. The height of the first end of the second inclined plate 45 is lower than the height of its bottom end, that is, the second inclined plate 45 is inclined toward the top of the concrete beam 2.
[0037] like Figure 2 and Figure 3 As shown, the utility model further comprises a plurality of second beam top surface steel bars 6 and a plurality of beam bottom surface steel bars 7. The plurality of second beam top surface steel bars 6 are located on the top side of the beam steel 4 and are evenly spaced from each other. The ends of the second beam top surface steel bars 6 are welded to the upper steel flanges of the variable height cross section in the beam steel 4. The plurality of beam bottom surface steel bars 7 are horizontally arranged on the bottom side of the beam steel 4 and are evenly spaced from each other. The ends of the beam bottom surface steel bars 7 are welded to the lower steel flanges of the variable height cross section in the beam steel 4. The rear side of the lower steel flange has a large construction space and steel bar adjustment space, which can facilitate manual overhead welding, so as to improve the welding efficiency and quality of the steel bars, thereby reducing the workload and difficulty of on-site operations.
[0038] It should be explained that the upper steel flange refers to the connection between the first horizontal beam plate 41 and the first inclined plate 42 in the beam steel 4, and the lower steel flange refers to the connection between the third horizontal beam plate 44 and the second inclined plate 45 in the beam steel 4. In order to reduce the workload of on-site construction, the second beam top surface steel bar 6 and the beam bottom surface steel bar 7 can be pre-welded to the beam steel 4 in the factory.
[0039] Compared with the prior art, the beam steel 4 in the concrete beam 2 adopts a variable height cross section at the welding node, which avoids the steel bar and its corresponding casting partition forming a narrow space that is difficult to cast and compact, and also avoids the casting connection plate blocking the connection of the column steel bar 9, which is conducive to improving the quality of concrete construction. In addition, the steel bars on the top and bottom surfaces of the concrete beam 2 are pre-welded to the corresponding steel flanges of the steel concrete beam 2 in the factory, which can ensure the connection quality of the structure, simplify the on-site construction process, and improve construction efficiency.
[0040] In this embodiment, if Figure 1 and Figure 3 As shown, the utility model further includes an inclined steel rod 8, which is located at the top side of the beam steel 4, and the same end of the inclined steel rod 8 is obliquely welded to the side wall of the column steel 3 and the first horizontal beam plate 41 to improve the strength of the utility model. The end of the inclined steel rod 8 connected to the column steel 3 is vertically provided with a first steel sleeve 81, and the third horizontal beam plate 44 is vertically provided with a second steel sleeve 441. The first steel sleeve 81 and the second steel sleeve 441 are both used to connect the column steel bars 9.
[0041] It should be noted that in other embodiments, the above-mentioned inclined steel rod 8 may not be used.
[0042] Specifically, the first steel sleeve 81 or the second steel sleeve 441 is welded in advance in the factory, the column steel bars 9 are arranged with relatively small two-level diameter steel bars at a larger spacing, and a triangular partition is set at the corresponding sleeve position. The column steel bars 9 outside the column steel 3 are arranged in a centralized manner, passing through the first steel sleeve 81 or the second steel sleeve 441, and then poured, so that the column steel bars 9, the first steel sleeve 81 and the second steel sleeve 441 are all buried in the concrete column 1.
[0043] In this embodiment, before pouring, a steel cage can be set around the column steel 3 and the beam steel 4.
[0044] Compared with the prior art, the utility model reduces the number of steel bar welding and sleeve connection, reduces the welding workload, arranges the steel bars more centrally outside the steel section, and can be pre-welded by the factory, so that the steel bar anchorage and force are more reliable.
[0045] The working principle of the embodiment of the utility model is:
[0046] All column steels 3 and beam steels 4 are prefabricated, segmented and partially reinforced with welded steel bars in the factory, and then transported to the construction site for assembly. Among them, the beam steel 4 adopts a variable height section to be welded with the column steel 3 and the inclined steel rod 8 to form a solid steel node.
[0047] During construction on site, the column steel 3 and beam steel 4 are first assembled and the steel flanges are welded, and then the column reinforcement 9 and beam reinforcement are installed. Then, the first beam top reinforcement 5 is centrally arranged, and then, after setting up the triangular partition and casting formwork, casting is carried out to finally form the utility model.
[0048] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A steel-concrete node prefabricated with steel bars and steel sections in a factory, characterized in that: The invention comprises a concrete column (1), a concrete beam (2), a column steel (3) and a beam steel (4); the column steel (3) is embedded in the concrete column (1), the end of the beam steel (4) is fixedly connected to the column steel (3), and the beam body of the beam steel (4) is embedded in the concrete beam (2); a gradient-shrinking variable height cross-section portion is provided in the middle of the beam steel (4), an upper steel flange for connecting steel bars is provided at the shrinking head end on the top side of the variable height cross-section portion, and a lower steel flange for connecting steel bars is provided at the shrinking head end on the bottom side of the variable height cross-section portion.
2. A steel-concrete node prefabricated with steel bars and steel sections in a factory according to claim 1, characterized in that: The beam steel (4) comprises a first horizontal beam plate (41), a first inclined plate (42), a second horizontal beam plate (43), a third horizontal beam plate (44), a second inclined plate (45) and a fourth horizontal beam plate (46); the first horizontal beam plate (41), the first inclined plate (42) and the second horizontal beam plate (43) are all located at the top of the concrete beam (2), the end of the first horizontal beam plate (41) is fixedly connected to the side wall of the column steel (3), the end of the first inclined plate (42) is fixedly connected to an end of the first horizontal beam plate (41) away from the column steel (3), the second horizontal beam plate (43) is fixedly connected to an end of the first inclined plate (42) away from the first horizontal beam plate (41), and the height of the first end of the first inclined plate (42) is higher than the height of the end of the first inclined plate (42); The third horizontal beam plate (44), the second inclined plate (45) and the fourth horizontal beam plate (46) are all located at the bottom of the concrete beam (2); the end of the third horizontal beam plate (44) is fixedly connected to the side wall of the column steel (3); the end of the second inclined plate (45) is fixedly connected to the end of the third horizontal beam plate (44) away from the column steel (3); the fourth horizontal beam plate (46) is fixedly connected to the end of the second inclined plate (45) away from the third horizontal beam plate (44); the height of the first end of the second inclined plate (45) is lower than the height of the end of the second inclined plate (45); the upper steel flange is located at the connection between the first horizontal beam plate (41) and the first inclined plate (42); the lower steel flange is located at the connection between the third horizontal beam plate (44) and the second inclined plate (45).
3. A steel-concrete node prefabricated with steel bars and steel sections in a factory according to claim 1, characterized in that: It also includes a first beam top surface steel bar (5), wherein a plurality of the first beam top surface steel bars (5) are respectively located on both sides of the beam steel (4), and one end of the first beam top surface steel bar (5) is embedded in the concrete column (1), and the other end is embedded in the concrete beam (2).
4. A steel-concrete node prefabricated with steel bars and steel sections in a factory according to claim 2, characterized in that: It also includes a second beam top surface steel bar (6), a plurality of the second beam top surface steel bars (6) are located on the top side of the beam steel (4), the ends of the second beam top surface steel bars (6) are fixedly connected to the connection between the first horizontal beam plate (41) and the first inclined plate (42), and the second beam top surface steel bars (6) are buried in the concrete beam (2).
5. The steel-concrete node prefabricated with steel bars and steel sections in a factory according to claim 2, characterized in that: It also includes beam bottom surface steel bars (7), a plurality of beam bottom surface steel bars (7) are horizontally arranged on the bottom side of the beam steel (4), and the ends of the beam bottom surface steel bars (7) are fixedly connected to the connection between the third horizontal beam plate (44) and the second inclined plate (45).
6. A steel-concrete node prefabricated with steel bars and steel sections in a factory according to claim 2, characterized in that: It also includes an oblique steel rod (8), which is located on the top side of the beam steel (4), and the same end of the oblique steel rod (8) is obliquely fixedly connected to the side wall of the column steel (3) and the first horizontal beam plate (41).
7. A steel-concrete node prefabricated with steel bars and steel sections in a factory according to claim 6, characterized in that: It also includes column reinforcement (9), the inclined steel rod (8) is connected to the end of the column steel (3) and is vertically provided with a first reinforcement sleeve (81) for connecting the column reinforcement (9), and the third horizontal beam plate (44) is vertically provided with a second reinforcement sleeve (441) for connecting the column reinforcement (9); the column reinforcement (9), the first reinforcement sleeve (81) and the second reinforcement sleeve (441) are all buried in the concrete column (1).