A prefabricated concrete frame beam-column corbel connection node

Abstract

This application discloses a prefabricated concrete frame beam-column corbel connection node, relating to the field of civil engineering technology. It includes columns and beams, with multiple corbels arranged from top to bottom on one side of the column. Multiple beams are correspondingly attached to the corbels and remain in contact with the column. The connection between the beams and the column is secured using steel structural components. By using steel structural components to securely connect the columns and beams, this application eliminates the need for on-site anchoring of beam and column reinforcement before pouring, as required in traditional prefabricated concrete structures. It also eliminates the need for temporary supports and formwork, effectively reducing material costs and shortening the construction period. Furthermore, the steel structural components provide reinforcement, with the corbels resisting shear forces and the steel components resisting bending moments, resulting in higher overall structural stability.

Description

Technical Field

[0001] This application relates to the field of civil engineering technology, specifically to a prefabricated concrete frame beam-column corbel connection node. Background Technology

[0002] Concrete beams and columns are fundamental structural components of buildings, playing a crucial role in supporting and transferring loads. Beams are typically arranged transversely to connect columns, forming a frame structure that constitutes the spatial framework of the entire building. This frame structure exhibits excellent integrity and stability in bearing both horizontal and vertical loads. Beams and columns work together to bear the loads of the floors and roof, transferring them to the foundation and ensuring the building's safety and stability. The design of concrete beams and columns not only relates to the structure's load-bearing capacity but also involves performance indicators such as deformation resistance, crack resistance, and durability.

[0003] Currently, precast columns and composite beams are used in prefabricated concrete structures. The beam-column connection nodes are generally constructed using post-cast concrete, and temporary supports and formwork need to be set up on site. This results in problems such as high material costs, large on-site workload, and long construction period for this system. Utility Model Content

[0004] The main purpose of this application is to provide a prefabricated concrete frame beam-column corbel connection node, which aims to solve the technical problems of high material costs, large on-site workload, and long construction period in traditional prefabricated concrete structures that use precast columns and composite beams and whose beam-column connection nodes are generally constructed by post-cast concrete.

[0005] The technical solution adopted in this application is as follows:

[0006] A prefabricated concrete frame beam-column corbel connection node includes a column and a beam. Multiple corbels are provided on one side of the column from top to bottom. Multiple beams are correspondingly attached to the corbels and are all kept in contact with the column. The connection between the beam and the column is fastened with steel structural components.

[0007] Furthermore, the crossbeam includes a top beam located at the top of the column and several non-top beams located below the top beam, and the steel structural members include ordinary steel structural members for connecting the top beam and the column and reinforced steel structural members for connecting the non-top beams and the column.

[0008] Furthermore, the ordinary steel structural member includes an L-shaped steel plate connected to the top surface of the top beam and the side surface of the column, and a single steel plate connected to the bottom surface of the top beam and the bottom surface of the corbel.

[0009] Furthermore, the reinforced steel structural member includes a pair of double shear-resistant steel plates located on both sides of the column and the non-top beam and connected to each other.

[0010] Furthermore, the steel structural components are bolted to the columns and beams.

[0011] Furthermore, bolt sleeves for connecting the bolts are pre-embedded inside the column and the beam.

[0012] Furthermore, the crossbeam is provided with a right-angle notch for overlapping the corbel.

[0013] Furthermore, all the steel structural components are made of galvanized steel sheets.

[0014] Furthermore, the column can be a rectangular column, a square column, an L-shaped column, or a T-shaped column.

[0015] Furthermore, the columns, beams, and corbels are all equipped with steel cages.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The present application proposes a prefabricated concrete frame beam-column corbel connection node. By fastening the columns and beams with steel structural components, it eliminates the need for on-site anchoring of beam and column reinforcement before pouring, as is required in traditional prefabricated concrete structures. This also eliminates the need for temporary supports and formwork, effectively reducing the cost of building materials and shortening the construction period. Furthermore, the steel structural components provide reinforcement, with the corbels resisting shear forces and the steel components resisting bending moments, resulting in higher overall building stability. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the prefabricated concrete frame beam-column corbel connection node using T-shaped columns in an embodiment of this application;

[0019] Figure 2 for Figure 1 Internal structure diagram;

[0020] Figure 3 This is a structural schematic diagram of the prefabricated concrete frame beam-column corbel connection node using rectangular columns, as described in an embodiment of this application.

[0021] Figure 4 for Figure 3 Internal structure diagram;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 for Figure 4 Enlarged view at point B in the middle;

[0024] Figure 7 for Figure 4 Enlarged view of point C in the middle.

[0025] Explanation of the labels in the attached drawings:

[0026] 100-Column, 200-Corner, 300-Beam, 400-L-shaped steel plate, 500-Single steel plate, 600-Double shear steel plate, 700-Bolt sleeve, 800-Bolt, 900-Reinforcing cage. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] See attached document Figure 1 and Figure 3 As shown in the figure, this application embodiment provides a prefabricated concrete frame beam-column corbel connection node, including a column 100 and a crossbeam 300. Multiple corbels 200 are provided on one side of the column 100 from top to bottom. Multiple crossbeams 300 overlap the corbels 200 one by one and keep them in contact with the column 100. The connection between the crossbeams 300 and the column 100 is fastened with steel structural components.

[0032] Currently, precast columns and composite beams are used in prefabricated concrete structures. Since the beam-column connection nodes are generally constructed using post-cast concrete, temporary supports and formwork need to be set up on site. Therefore, it is urgent to solve the problems of high material costs, large on-site workload, and long construction period in this system.

[0033] Based on the above implementation method, by using steel structural components to fasten the columns 100 and beams 300, it is not only unnecessary to anchor the beam and column reinforcement on-site before pouring, as is required in traditional precast concrete structures, but also eliminates the need for temporary supports and formwork, effectively reducing the cost of building materials and shortening the construction cycle. Furthermore, the steel structural components provide reinforcement, with the corbels 200 resisting shear force and the steel structural components resisting bending moment, resulting in higher overall building stability.

[0034] In the above embodiments, the column 100 can be a general long column form, such as a rectangular column, a square column, an L-shaped column, or a T-shaped column. In this embodiment, a rectangular column and a T-shaped column are used as examples. It is easy to understand that the column 100, the beam 300, and the corbel 200 are all internally reinforced with steel cages 900 and then formed by concrete pouring.

[0035] In one embodiment, such as Figure 1 and Figure 3As shown, the end of the crossbeam 300 that overlaps with the corbel 200 has a pre-fabricated right-angle notch. During installation, the crossbeam 300 can be directly overlapped with the corbel 200 through the right-angle notch and then fastened with steel structural components.

[0036] In the above embodiment, by prefabricating a right-angle notch in the crossbeam 300, the right-angle notch can serve as a limiting and positioning tool, avoiding the need to repeatedly adjust the position of the crossbeam 300 to match the position of the bracket 200 during installation. This facilitates the rapid connection between the crossbeam 300 and the bracket 200, and to a certain extent, helps to shorten the construction period.

[0037] Based on the design of the multi-layer beam 300 structure, it is understandable that multiple sets of beams 300 are arranged from top to bottom along the column 100. The beam 300 at the top layer naturally experiences a relatively low load, while all beams 300 below the top layer experience a significantly higher load than the top beam 300. Therefore, to ensure the connection stability between the beams 300 and the column 100, in one embodiment, such as... Figure 1 and Figure 3 As shown, the crossbeam 300 includes a top beam located at the top of the column 100 and several non-top beams located below the top beam. It is clear that the load on the top beam is less than the load on the non-top beams. Therefore, the steel structural members include ordinary steel structural members for connecting the top beam and the column 100 and reinforced steel structural members for connecting the non-top beams and the column 100.

[0038] In the above embodiments, by designing different steel structural components for the connection between the top beam and non-top beam and the column 100, it is understandable that there will be differences in material usage and material cost between ordinary steel structural components and reinforced steel structural components. Therefore, fixing the top beam with a relatively small load using ordinary steel structure can save costs to a certain extent.

[0039] As a specific example, such as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the ordinary steel structural component includes an L-shaped steel plate 400 connected to the top surface of the top beam and the side of the column 100, and a single steel plate 500 connected to the bottom surface of the top beam and the bottom surface of the corbel 200. Bolt 800 sleeves are prefabricated inside the top beam and the column 100, and the L-shaped steel plate 400 has prefabricated through holes. During installation, after the L-shaped steel plate 400 is fitted to the column 100 and the top beam, the bolts 800 are screwed into the bolt 800 sleeves through the through holes, thereby fixing the L-shaped steel plate 400 to the column 100 and the top beam. Similarly, bolt 800 sleeves are pre-embedded inside the bracket 200, and through holes are machined at the four corners of the single steel plate 500. During installation, after the single steel plate is attached to the bottom surface of the bracket 200 and the bottom surface of the top beam, the bolt 800 is screwed into the bolt 800 sleeve through the through hole, thereby fixing the single steel plate 500 to the bracket 200 and the crossbeam 300.

[0040] Understandably, L-shaped steel plates 400 and single steel plates 500 are used to fix the top and bottom surfaces of the top beam to the column 100, respectively. The bracket 200 resists shear force, and the L-shaped steel plates 400 and single steel plates 500 resist bending moment, making the connection between the entire top beam and the column 100 more solid and stable.

[0041] Meanwhile, in another specific example, such as Figure 2 , Figure 4 and Figure 7 As shown, the reinforced steel structure includes a pair of double shear steel plates 600 located on both sides of the column 100 and the non-top beam. At least two bolt sleeves 800 are pre-embedded inside the non-top beam and at least two bolt sleeves 800 are pre-embedded inside the column 100. The bolt sleeves 800 extend to the side of the double shear steel plates 600. The four corners of the double shear steel plates 600 are provided with through holes coaxial with the bolt sleeves 800. Bolts 800 are passed through the bolt sleeves 800 and through the through holes on both sides of the double shear steel plates 600. Then, nuts are used to lock the bolts 800 at both ends, thereby fixing the double shear steel plates 600 to the column 100 and the beam 300 respectively.

[0042] In the above embodiment, the double shear steel plate 600 is thicker and has a larger total area than the L-shaped steel plate 400 and the single steel plate 500, so as to ensure that the non-top beam and the column 100 can withstand a larger bending moment after being fixed, making the connection between the non-top beam and the column 100 more firm and stable.

[0043] In the above embodiments, all steel structural components are made of galvanized steel sheets.

[0044] As is easy to understand, galvanized steel sheets have a zinc layer on their surface, which can delay the corrosion of the base steel sheet. Under normal conditions, the service life can reach 20-50 years. Moreover, hot-dip galvanizing has a better protective effect, and the cost is only 1 / 3 to 1 / 2 of that of stainless steel. It supports bending, stamping, welding and other processes, and has stable mechanical properties.

[0045] In summary, the prefabricated concrete frame beam-column corbel connection node provided in this application, by using steel structural components to securely connect the columns and beams, eliminates the need for on-site anchoring of beam and column reinforcement before pouring, as required in traditional prefabricated concrete structures. This also eliminates the need for temporary supports and formwork, effectively reducing material costs and shortening the construction period. Furthermore, the steel structural components enhance the overall structural stability, with the corbels resisting shear forces and the steel components resisting bending moments. Additionally, the design of both standard and reinforced steel structural components for connections between the top beam and non-top beams and columns, depending on the load borne by the beams, further contributes to material savings and cost reduction.

[0046] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fabricated concrete frame beam-column corbel connection joint, characterized in that, It includes columns and beams. One side of the column is provided with multiple brackets from top to bottom. Multiple beams are attached to the brackets one by one and keep them in contact with the column. The ends of the beams and the column are fastened together with steel structural components. The crossbeam includes a top beam located at the top of the column and several non-top beams located below the top beam. The steel structural members include ordinary steel structural members for connecting the top beam and the column and reinforced steel structural members for connecting the non-top beams and the column. The ordinary steel structural component includes an L-shaped steel plate connected to the top surface of the top beam and the side surface of the column, and a single steel plate connected to the bottom surface of the top beam and the bottom surface of the corbel. The reinforced steel structural member includes a pair of double shear-resistant steel plates located on both sides of the column and the non-top beam and connected to each other.

2. The fabricated concrete frame beam-column corbel connection joint of claim 1, wherein, The steel structural components are bolted to the columns and beams.

3. The fabricated concrete frame beam-column corbel connection joint of claim 2, wherein, Bolt sleeves for connecting the bolts are pre-embedded inside the column and the beam.

4. The fabricated concrete frame beam-column corbel connection joint of claim 1, wherein, The crossbeam is provided with a right-angle notch for overlapping the corbel.

5. The fabricated concrete frame beam-column corbel connection node of claim 1, wherein, All steel structural components are made of galvanized steel sheets.

6. The fabricated concrete frame beam-column corbel connection node of claim 1, wherein, The columns can be rectangular, square, L-shaped, or T-shaped.

7. The fabricated concrete frame beam-column corbel connection node of claim 1, wherein, The columns, beams, and corbels are all equipped with steel cages.

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