Combined structure overhanging steel corbel joint

Abstract

The utility model discloses a combined structure overhanging steel corbel node which comprises a combined structure internally provided with a steel framework and a steel corbel arranged on the steel framework and used for supporting a crane beam, and the steel framework is provided with a reinforcing assembly used for reinforcing the connecting node of the steel corbel and the steel framework. The reinforcing assembly comprises a plurality of first reinforcing pieces and a plurality of second reinforcing pieces, and the first reinforcing pieces are arranged at the joints of the tops of the corresponding steel corbels of the steel framework and extend towards the sides away from the steel corbels. According to the utility model, the steel crane beam is arranged on the combined structural member formed by combining the steel reinforced concrete column, the concrete filled steel tubular column and the steel reinforced concrete beam, a node method of arranging the steel crane beam on the steel reinforced concrete column, the concrete filled steel tubular column and the steel reinforced concrete beam is defined, and a new design concept and a new construction scheme are developed; reference is provided for similar engineering design and construction, and the method has great application and popularization prospects.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a composite structure cantilevered steel bracket node. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] With the rapid development of my country's construction industry, steel-concrete composite structures have been widely used, accumulating a wealth of engineering experience and research results. Composite structures are an independent structural form combining steel and concrete. Because the steel sections, in addition to reinforced concrete, work together with the steel reinforcement and concrete in a unified manner due to their inherent strength and ductility, composite structures possess advantages over traditional reinforced concrete structures, including greater load-bearing capacity, higher stiffness, and better seismic performance. Compared to steel structures, they offer better fire resistance, better local and overall structural stability, and savings in steel resources. Targeted promotion and application of this type of structure is of paramount importance for promoting the development of high-rise and multi-story buildings in my country, improving the overall seismic performance of structures, and increasing usable structural space.

[0004] Crane beams are beam structures that support the operation of bridge cranes. Crane rails run on the beams, allowing the crane to travel back and forth. Currently, the existing national standard atlases for crane beam design are: "Steel Crane Beams (6m~9m)" G520-1~2 and "Crane Rail Connections and Stops" 05G525. These atlases only specify the connections between the steel crane beam and steel columns and concrete columns, but do not specify the detailed installation details of the cantilevered steel bracket joints when the steel crane beam is fixed on steel-concrete composite columns, steel-tube concrete columns, or steel-concrete composite beams. Therefore, it is essential to study the detailed installation of these cantilevered steel bracket joints. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings by providing a combined structure cantilevered steel bracket node, which solves the connection problem of steel crane beams arranged on steel-concrete composite columns, steel-concrete composite columns, and steel-concrete composite beams.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a combined structure cantilevered steel bracket node, including a combined structure with an internal steel frame and a steel bracket installed on the steel frame for supporting a crane beam, wherein the steel frame is provided with a reinforcing component for reinforcing the connection node between the steel bracket and the steel frame;

[0007] The reinforcing assembly includes multiple first reinforcing members and multiple second reinforcing members. Each first reinforcing member is disposed at the top connection of the corresponding steel bracket of the steel frame and extends away from the steel bracket. Each second reinforcing member is disposed at the bottom connection of the corresponding steel bracket of the steel frame and extends away from the steel bracket.

[0008] Furthermore, the steel bracket includes an upper flange, a lower flange, and a web connecting the upper flange and the lower flange. A plurality of first stiffening ribs connected to the web are also provided between the upper flange and the lower flange.

[0009] Furthermore, the combined structure is a steel-concrete composite column, which is formed by a steel column, steel-concrete composite column longitudinal reinforcement and steel-concrete composite column stirrups as a skeleton, and is encased in concrete. Correspondingly, the steel bracket is welded to one flange of the steel column.

[0010] The reinforcing component includes multiple outer transverse diaphragms arranged vertically between the two flanges of the steel column, and at least one second stiffening rib connected to the web of the steel column is provided between two adjacent outer transverse diaphragms.

[0011] Furthermore, the upper flange of the steel bracket of the corresponding steel-concrete composite column is provided with a steel sleeve for connecting with the longitudinal reinforcement of the steel-concrete composite column, and the bottom of the lower flange of the steel bracket of the corresponding steel-concrete composite column is provided with a connecting steel plate for connecting with the longitudinal reinforcement of the steel-concrete composite column.

[0012] Furthermore, a connecting steel bar is provided between the first stiffening rib of the corresponding steel-concrete column and the flange of the steel column for connecting with the stirrups of the steel-concrete column.

[0013] Furthermore, the combined structure is a steel-concrete composite column, which is formed by pouring concrete into the steel pipe as a frame. The reinforcing components also include multiple inner transverse diaphragms disposed inside the steel pipe and curved welded steel plates for connecting the steel pipe with the upper flange and lower flange of the steel bracket. Concrete pouring holes are provided on the inner transverse diaphragms.

[0014] Furthermore, the combined structure is a steel-concrete composite beam, which is composed of steel beams, longitudinal steel beam bars, steel beam stirrups, steel beam web bars and fixing bars as a skeleton, and is encased in concrete. Correspondingly, the steel brackets are welded to the web of the steel beam.

[0015] The thickness and width of the upper flange of the steel beam are both greater than the thickness and width of the lower flange, and a short square steel tube column that is not penetrated by the longitudinal reinforcement of the steel beam is provided on the upper flange of the steel beam.

[0016] The reinforcing assembly also includes a third stiffening rib disposed on the side of the web of the steel beam away from the corresponding steel bracket, and a plurality of fourth stiffening ribs disposed on the third stiffening rib and perpendicular to the third stiffening rib.

[0017] The beneficial effects of this utility model are reflected in:

[0018] This utility model proposes to arrange steel crane beams on a composite structural member consisting of steel-concrete composite columns, steel-concrete composite columns, and steel-concrete composite beams. It clarifies the node construction method for the cantilevered steel brackets on the steel crane beams arranged on the steel-concrete composite columns, steel-concrete composite columns, and steel-concrete composite beams, opening up new design concepts and construction schemes, providing a reference for the design and construction of similar projects, and has great prospects for promotion and application. Attached Figure Description

[0019] Figure 1 This is a plan view of the crane beam layout of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention (AA section).

[0021] Figure 3 This is a cross-sectional view of the present invention.

[0022] Figure 4 This is a schematic diagram showing the connection between the steel-concrete composite column and the steel bracket of this utility model;

[0023] Figure 5 This is a cross-sectional view of the present invention.

[0024] Figure 6 This is a cross-sectional view of the present invention.

[0025] Figure 7 This is a schematic diagram of the connection between the steel-concrete composite column and the steel corbel in one embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the installation of the inner transverse partition of this utility model;

[0027] Figure 9 This is a schematic diagram of the connection between the steel-concrete composite column and the steel corbel in another embodiment of the present invention;

[0028] Figure 10 This is a cross-sectional view of the EE of this utility model;

[0029] Figure 11 This is a cross-sectional view of the FF section of this utility model;

[0030] Figure 12 This is a schematic diagram showing the connection between the steel-concrete composite beam and the steel bracket of this utility model;

[0031] Figure 13 This is a schematic diagram showing the installation of the third and fourth stiffening ribs of this utility model.

[0032] In the picture:

[0033] 1. Steel-concrete composite column; 11. Steel column; 12. Longitudinal reinforcement of steel-concrete composite column; 13. Stirrups of steel-concrete composite column;

[0034] 2. Concrete-filled steel tubular columns;

[0035] 3. Steel-concrete composite beam; 31. Steel beam; 32. Longitudinal reinforcement of steel beam; 33. Stirrups of steel beam; 34. Web reinforcement of steel beam; 35. Fixed reinforcement; 36. Short square steel tube column;

[0036] 4. Steel bracket; 41. Upper flange of steel bracket; 42. Lower flange of steel bracket; 43. Web of steel bracket; 44. First stiffening rib;

[0037] 5. Reinforcing components; 51. Outer diaphragm; 52. Second stiffening rib; 53. Inner diaphragm; 54. Curved welded steel plate; 55. Third stiffening rib; 56. Fourth stiffening rib;

[0038] 6. Connect the steel plates; 7. Connect the reinforcing bars. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0040] Please see Figure 1-13 This utility model discloses a combined structure cantilevered steel bracket node, including a combined structure with an internal steel frame and a steel bracket 4 installed on the steel frame for supporting a crane beam. The steel frame is provided with a reinforcing component 5 for reinforcing the connection node between the steel bracket 4 and the steel frame.

[0041] The reinforcing component 5 includes multiple first reinforcing members and multiple second reinforcing members. Each first reinforcing member is disposed at the top connection of the corresponding steel bracket 4 of the steel frame and extends away from the steel bracket 4. Each second reinforcing member is disposed at the bottom connection of the corresponding steel bracket 4 of the steel frame and extends away from the steel bracket 4.

[0042] This utility model proposes to arrange steel crane beams on a composite structure, clarifies the node construction method of the cantilevered steel bracket 4 for arranging steel crane beams on a composite structure, opens up new design concepts and construction schemes, provides reference for the design and construction of similar projects, and has great prospects for promotion and application.

[0043] It should be noted that the spacing between steel-concrete composite columns 1 and steel-concrete composite columns 2 is 6 to 9 meters, and the installation of crane beams must meet the design and installation requirements of current specifications and drawings for steel crane beams.

[0044] In one embodiment, the steel bracket 4 includes an upper flange 41, a lower flange 42, and a web plate 43 connecting the upper flange 41 and the lower flange 42. A plurality of first stiffening ribs 44 connected to the web plate 43 are also provided between the upper flange 41 and the lower flange 42.

[0045] This design strengthens the connection between the upper flange 41 and the lower flange 42 of the steel bracket through the first stiffening rib 44, thereby improving the support effect on the crane beam.

[0046] In one embodiment, the composite structure is a steel-concrete composite column 1. The steel-concrete composite column 1 is formed by a steel column 11, steel-concrete composite column longitudinal reinforcement 12 and steel-concrete composite column stirrups 13 as a skeleton, and is encased in concrete. Corresponding steel brackets 4 are welded to one flange of the steel column 11.

[0047] The reinforcing component 5 includes a plurality of outer transverse diaphragms 51 arranged vertically between the two flanges of the steel column 11, and at least one second stiffening rib 52 connected to the web of the steel column 11 is provided between two adjacent outer transverse diaphragms 51.

[0048] This design improves the load-bearing capacity and stability of the joint area by setting multiple outer diaphragms 51 and second stiffening ribs 52 at the connection nodes between the steel bracket 4 and the steel column 11.

[0049] In one embodiment, a steel sleeve for connecting to the longitudinal reinforcement 12 of the steel corbel of the corresponding steel-concrete column 1 is provided on the upper flange 41 of the steel corbel, and a connecting steel plate 6 for connecting to the longitudinal reinforcement 12 of the steel-concrete column is provided at the bottom of the lower flange 42 of the steel corbel of the corresponding steel-concrete column 1.

[0050] This design utilizes a steel bar sleeve connected to the upper flange, and a connecting steel plate 6 to connect the longitudinal reinforcement 12 of the steel-concrete column to the lower flange 42 of the steel bracket. The setting of the connecting steel plate 6 can avoid the use of a steel bar sleeve for connection at the lower flange 42 of the steel bracket, solve the limitation of the oblique cutting connection of the steel bar sleeve, and meet the requirements of the standard drawings for the connection between the longitudinal reinforcement 12 of the steel-concrete column and the steel beam.

[0051] In practice, the steel brackets 4 are pre-welded to the steel-concrete composite column 1, the steel-concrete composite column 2, and the steel-concrete composite beam 3 in the factory. The longitudinal reinforcement 12 of the steel-concrete composite column is connected to the upper flange 41 of the steel bracket using a steel sleeve. This effectively reduces on-site welding and weld quality inspection, prevents significant variations in weld quality during on-site welding, ensures construction quality, improves construction efficiency, shortens the construction period, and saves on project construction costs, resulting in significant social benefits.

[0052] In one embodiment, a connecting steel bar 7 for connecting to the stirrup 13 of the steel-concrete column is provided between the first stiffening rib 44 of the corresponding steel-concrete column 1 and the flange of the steel column 11.

[0053] This design allows the steel-concrete column stirrups 13 to be installed in the blocking area of ​​the steel bracket 4 via the connecting steel bars 7, ensuring that the steel-concrete column stirrups 13 can be properly installed at this location.

[0054] In one embodiment, the composite structure is a steel-concrete composite column 2, which is formed by pouring concrete into the steel pipe as a frame. When the diameter of the steel pipe is greater than 700mm and within 2m of the steel pipe to be spliced, the reinforcing component 5 also includes multiple inner transverse diaphragms 53 disposed in the steel pipe and curved welded steel plates 54 for connecting the steel pipe with the upper flange 41 and the lower flange 42 of the steel bracket. Concrete pouring holes are provided on the inner transverse diaphragms 53.

[0055] This design improves the load-bearing capacity and stability of the joint area by placing the curved welded steel plate 54 and the inner transverse diaphragm 53 at the connection node between the steel corbel 4 and the steel tube concrete column 2.

[0056] In another embodiment, when the diameter of the steel pipe is less than 700mm, the inner transverse diaphragm 53 cannot be welded inside the steel pipe because neither the human body nor the welding equipment can enter the steel pipe. Therefore, the curved welding steel plate 54 is set as a complete circular steel plate, which facilitates welding while enhancing the load-bearing capacity and stability of the node area.

[0057] In one embodiment, the composite structure is a steel-concrete composite beam 3. The steel-concrete composite beam 3 is formed by steel beam 31, steel beam longitudinal reinforcement 32, steel beam stirrups 33, steel beam web reinforcement 34 and fixing reinforcement 35 as a skeleton, and is encased in concrete. Corresponding steel brackets 4 are welded to the web of the steel beam 31.

[0058] The thickness and width of the upper flange of the steel beam 31 are greater than those of the lower flange. A short square steel tube column 36 that is not penetrated by the longitudinal reinforcement 32 of the steel beam is provided on the upper flange of the steel beam 31.

[0059] The reinforcing component 5 also includes a third stiffening rib 55 disposed on the side of the web of the steel beam 31 away from the corresponding steel bracket 4, and a plurality of fourth stiffening ribs 56 disposed on the third stiffening rib 55 and perpendicular to the third stiffening rib 55.

[0060] This design, by welding square steel tube short columns 36 to the upper flange of the steel beam 31, facilitates the installation and fixing of the top of the crane beam. Furthermore, because the upper flange of the steel beam 31 is reinforced compared to the lower flange, the area of ​​the longitudinal reinforcement 32 in the compression zone of the steel-concrete beam 3 is reduced. This prevents the longitudinal reinforcement 32 from penetrating the square steel tube short columns 36, reducing the weakening of the square steel tube short columns 36, improving the local stability of the square steel tube short columns 36, and enhancing the overall load-bearing capacity and overall stability of the connection nodes of the steel-concrete beam 3, resulting in significant social benefits.

[0061] It should be noted that after the crane beam is installed, a 50mm thick concrete protective layer needs to be poured on the steel bracket 4 to meet the overall appearance requirements of the steel-concrete composite structure component. The specific construction method is as follows:

[0062] S1. Weld steel brackets 4 onto the steel column 11, and after the steel brackets 4 are welded, weld the outer transverse diaphragm 51, the second stiffening rib 52, the steel sleeve and the connecting steel plate 6 to the installation point in sequence.

[0063] Weld steel brackets 4 onto the steel pipe, and after the steel brackets 4 are welded, weld the inner transverse partition 53 and the curved welded steel plate 54 to the installation point.

[0064] Steel brackets 4 are welded onto the steel beam 31, and after the steel brackets 4 are welded, the third stiffening rib 55 and the fourth stiffening rib 56 are welded to the installation point in sequence.

[0065] S2. Transport the steel frame that has been welded in step S1 to the construction site;

[0066] S3. After the steel frame is transported to the location, it is fixed and installed, and the node components are installed.

[0067] S4. Tie the longitudinal reinforcement 12, stirrup 13 and connecting reinforcement 7 of the steel-concrete column to the installed steel column 11 in sequence. Tie the longitudinal reinforcement 32, stirrup 33, web reinforcement 34 and fixing reinforcement 35 of the steel beam to the installed steel beam 31 in sequence.

[0068] S5. Pour concrete into steel-concrete composite column 1, steel-concrete composite column 2, and steel-concrete composite beam 3;

[0069] S6. Cast the four-sided layer of the steel bracket.

[0070] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0071] Furthermore, if the embodiments of this utility model 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 indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, 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. If 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 by this utility model.

[0072] Additionally, "multiple" refers to two or more.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite structure cantilevered steel bracket node, characterized in that: It includes a combined structure with an internal steel frame and a steel bracket (4) installed on the steel frame for supporting the crane beam. The steel frame is provided with a reinforcing component (5) for reinforcing the connection node between the steel bracket (4) and the steel frame. The reinforcing component (5) includes a plurality of first reinforcing members and a plurality of second reinforcing members. Each first reinforcing member is disposed at the top connection of the corresponding steel bracket (4) of the steel frame and extends away from the steel bracket (4). Each second reinforcing member is disposed at the bottom connection of the corresponding steel bracket (4) of the steel frame and extends away from the steel bracket (4).

2. The cantilevered steel bracket node of the composite structure according to claim 1, characterized in that: The steel bracket (4) includes an upper flange (41), a lower flange (42), and a web plate (43) connecting the upper flange (41) and the lower flange (42). A plurality of first stiffening ribs (44) connected to the web plate (43) are also provided between the upper flange (41) and the lower flange (42).

3. The cantilevered steel bracket node of the composite structure according to claim 2, characterized in that: The combined structure is a steel-concrete composite column (1). The steel-concrete composite column (1) is formed by a steel column (11), steel-concrete composite column longitudinal reinforcement (12) and steel-concrete composite column stirrups (13) as a skeleton, and is encased in concrete. Correspondingly, the steel bracket (4) is welded to one of the flanges of the steel column (11). The reinforcing component (5) includes a plurality of outer transverse diaphragms (51) arranged vertically between the two flanges of the steel column (11), and at least one second stiffening rib (52) connected to the web of the steel column (11) is provided between two adjacent outer transverse diaphragms (51).

4. The cantilevered steel bracket node of the composite structure according to claim 3, characterized in that: The upper flange (41) of the steel bracket of the corresponding steel-concrete column (1) is provided with a steel sleeve for connecting with the longitudinal reinforcement (12) of the steel-concrete column, and the bottom of the lower flange (42) of the steel bracket of the corresponding steel-concrete column (1) is provided with a connecting steel plate (6) for connecting with the longitudinal reinforcement (12) of the steel-concrete column.

5. The cantilevered steel bracket node of the composite structure according to claim 3, characterized in that: A connecting steel bar (7) for connecting to the stirrup (13) of the steel-concrete column is provided between the first stiffening rib (44) of the corresponding steel-concrete column (1) and the flange of the steel column (11).

6. The cantilevered steel bracket node of the composite structure according to claim 2, characterized in that: The combined structure is a steel-concrete composite column (2). The steel-concrete composite column (2) is formed by using steel pipe as a skeleton and pouring concrete into the steel pipe. The reinforcing component (5) also includes multiple inner transverse diaphragms (53) set inside the steel pipe and curved welded steel plates (54) for connecting the steel pipe with the upper flange (41) and the lower flange (42) of the steel bracket. Concrete pouring holes are opened on the inner transverse diaphragms (53).

7. The cantilevered steel bracket node of the composite structure according to claim 1, characterized in that: The combined structure is a steel-concrete composite beam (3), which is made of steel beam (31), steel beam longitudinal reinforcement (32), steel beam stirrups (33), steel beam web reinforcement (34) and fixing reinforcement (35) as a skeleton, and is encased in concrete. Correspondingly, the steel bracket (4) is welded to the web of the steel beam (31). The thickness and width of the upper flange of the steel beam (31) are greater than the thickness and width of the lower flange. A short square steel tube column (36) that is not penetrated by the longitudinal reinforcement (32) of the steel beam is provided on the upper flange of the steel beam (31). The reinforcing component (5) further includes a third stiffening rib (55) disposed on the side of the web of the steel beam (31) away from the corresponding steel bracket (4) and a plurality of fourth stiffening ribs (56) disposed on the third stiffening rib (55) and perpendicular to the third stiffening rib (55).

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