Steel reinforced beam and concrete column connecting joint without steel reinforced column and construction method of steel reinforced beam and concrete column connecting joint

Abstract

The invention discloses a steel reinforced beam and concrete column connecting joint without steel reinforced columns and a construction method thereof. A lifting lug is installed at the top of a steel reinforced beam, two brackets and a channel steel support are installed at the lower end of the steel reinforced beam, the brackets are installed on the two sides of the lower end of the steel reinforced beam, the channel steel support is located between the two brackets, and a plurality of supporting frame bodies are arranged between the concrete columns; a formwork is arranged on the supporting frame body in a supporting mode, and the bottom of the channel steel support is installed on the formwork. Steel reinforced columns are not needed, the steel bar binding process is simplified, the steel structure consumption is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of building structure engineering, and more particularly to a connection node between a steel beam and a concrete column without requiring a steel column, and a construction method thereof. Background Art

[0002] With the passage of time and technological advancements, the spans of concrete columns are gradually increasing. Structural analysis dictates that increasing beam spans requires either increasing beam cross-section dimensions or increasing reinforcement ratios to maintain load-bearing capacity. Simply increasing beam height would compress building headroom, impacting user comfort. Increasing reinforcement alone could lead to over-reinforcement brittle failure and wasteful material. Consequently, most domestic design firms utilize steel-reinforced concrete composite beams, achieving improved structural performance while controlling beam height and reinforcement ratios.

[0003] However, the connection nodes between traditional steel beams and concrete columns have inherent defects: the steel lap plates require complex and detailed design, but secondary adjustments on site are still difficult to avoid, which not only reduces construction efficiency but also increases cost risks. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a connection node between steel beams and concrete columns without the need for steel columns and a construction method thereof, thereby simplifying the steel bar binding process, reducing the amount of steel structure used and shortening the construction period.

[0005] The present invention adopts the following technical solutions:

[0006] The steel frame beam and concrete column connection node does not require steel frame columns. The top of the steel frame beam is installed with a lifting lug, and the lower end of the steel frame beam is installed with two corbels and a channel steel support. The corbels are installed on both sides of the lower end of the steel frame beam, and the channel steel support is located between the two corbels. Multiple support frames are set between the concrete columns, and a formwork is supported on the support frame. The bottom of the channel steel support is installed on the formwork.

[0007] Furthermore, the length of the corbel is equal to the height of the concrete column.

[0008] Furthermore, a plurality of groups of limiting iron nails are installed on the template, and the limiting iron nails are set at an angle. After the installation is completed, the bottom of the channel steel support is located between the limiting iron nails.

[0009] Furthermore, the channel steel support and the formwork are connected by fixing iron nails.

[0010] The present invention discloses a construction method for a connection node between a steel beam and a concrete column without requiring a steel column, comprising the following steps:

[0011] Step 1: Process the steel beam, install the channel steel support at the lower end of the steel beam, install the corbels on both sides of the lower end of the steel beam, and install the lifting lugs at the upper end of the steel beam;

[0012] Step 2: Bind the steel bars of the concrete column, then erect the support frame, set up the formwork, and nail the limit iron nails at the formwork.

[0013] Step 3: Use the on-site hoisting machinery to hoist the steel skeleton beam to the corresponding position, and adjust the position of the steel skeleton beam according to the limit iron nails.

[0014] Step 4: After the adjustment of the steel skeleton beam is completed, fix the channel steel support with fixed iron nails. Finally, the bottom steel bars of the steel skeleton beam pass through the channel steel support to complete the binding of the beam steel bars and the pouring of the concrete column.

[0015] Furthermore, the limit iron nails are located on both sides of the channel steel support of the steel skeleton beam.

[0016] Furthermore, the corbel and the channel steel support are welded to the lower end of the steel skeleton beam, and the lifting lugs are welded to the upper end of the steel skeleton beam.

[0017] Beneficial effects

[0018] The present invention can be used flexibly, made of on-site materials and reusable. There is no need to weld lifting lugs on each steel column according to the traditional method, which can reduce material loss, lower production cost, and is safe and reliable in use without having a negative impact on the structure. Description of the drawings

[0019] Figure 1 It is a schematic diagram after the construction of Step 1 in an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram after the construction of Step 2 in an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram after the construction of Step 3 in an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram after the construction of Step 4 in an embodiment of the present invention;

[0023] Figure 5 It is a cross-sectional view after the construction of an embodiment of the present invention is completed. Specific embodiments

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] As shown in the figure, the present invention discloses a connection node between a steel-concrete composite beam without a steel column and a concrete column. A lifting lug 2 is installed at the top of the steel-concrete composite beam 1, and two corbel brackets 3 and a channel steel support 4 are installed at the lower end of the steel-concrete composite beam 1. The corbel brackets 3 are installed on both sides of the lower end of the steel-concrete composite beam 1, and the channel steel support 4 is located between the two corbel brackets 3. A plurality of support frames 6 are arranged between the concrete columns 5, a formwork 7 is supported on the support frames 6, and the bottom of the channel steel support 4 is installed on the formwork 7.

[0026] The present invention does not require the addition of a steel column and does not need to separately set up a support frame, which not only reduces the difficulty of steel bar binding when there is a steel column, but also helps to shorten the project duration and reduce the project cost.

[0027] In an embodiment of the present invention, the length of the corbel bracket 3 is equal to the height of the concrete column 5.

[0028] In an embodiment of the present invention, a number of groups of limit iron nails 8 are installed on the formwork 7. The limit iron nails 8 are inclined. After installation, the bottom of the channel steel support 4 is located between the limit iron nails 8.

[0029] The limit iron nails 8 are used to limit the channel steel support 4, which is convenient for positioning and ensures the accuracy of the connection position.

[0030] In an embodiment of the present invention, the channel steel support 4 and the formwork 7 are connected by fixing iron nails 9.

[0031] The fixing iron nails 9 complete the fixed connection between the channel steel support 4 and the formwork 7. This ensures the strength during subsequent construction.

[0032] The present invention discloses a construction method for a connection node between a steel-concrete composite beam without a steel column and a concrete column, which includes the following steps:

[0033] Step 1: Process the steel-concrete composite beam 1 in a steel structure processing factory, install the channel steel support 4 at the lower end of the steel-concrete composite beam 1, install the corbel brackets 3 on both sides of the lower end of the steel-concrete composite beam 1, and install the lifting lug 2 at the upper end of the steel-concrete composite beam 1;

[0034] The lifting lug 2 here is used for hoisting the steel-concrete composite beam 1.

[0035] Step 2: The steel bar workers bind the steel bars of the concrete column 5, then the scaffolders set up the support frames 6, the carpenters support the formwork 7, and finally the steel structure construction personnel nail the limit iron nails 8 at the formwork 7. The limit iron nails 8 are used for hoisting limit of the steel-concrete composite beam 1, and no additional limit equipment is required, reducing the cost;

[0036] Step 3: Use on-site hoisting machinery to hoist the steel-concrete composite beam 1 to the corresponding position and adjust the position of the steel-concrete composite beam 1 according to the limit iron nails 8;

[0037] Step 4: After the adjustment at the position of the steel skeleton beam 1 is completed, fix the channel steel support 4 with fixing iron nails 9. Finally, the bottom reinforcement of the steel skeleton beam passes through the channel steel support 4 to complete the binding of beam steel bars and the pouring of the concrete column 5.

[0038] In an embodiment of the present invention, the limiting iron nails 8 are located on both sides of the channel steel support 4 of the steel skeleton beam 1.

[0039] In an embodiment of the present invention, the corbel 3 and the channel steel support 4 are welded to the lower end of the steel skeleton beam 1, and the lifting lug 2 is welded to the upper end of the steel skeleton beam 1.

[0040] The present invention can effectively improve the construction economy and operation efficiency.

[0041] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A connection joint between a steel girder without a steel column and a concrete column, characterized in that: A lifting lug is installed on the top of the steel beam, and two corbels and a channel steel support are installed at the lower end of the steel beam. The corbels are installed on both sides of the lower end of the steel beam, and the channel steel support is located between the two corbels. Multiple support frames are set between the concrete columns, and a formwork is supported on the support frame. The bottom of the channel steel support is installed on the formwork.

2. The steel girder and concrete column connection joint without steel columns according to claim 1, characterized in that: The length of the corbel is equal to the height of the concrete column.

3. The steel beam and concrete column connection joint without a steel column according to claim 1, characterized in that: Several groups of limiting iron nails are installed on the template, and the limiting iron nails are set at an angle. After the installation is completed, the bottom of the channel steel support is located between the limiting iron nails.

4. The connection node between a steel beam and a concrete column without a steel column according to claim 3, characterized in that: The channel steel support and the formwork are connected by fixed iron nails.

5. Construction method of connection joint between steel girder without steel column and concrete column, characterized in that: The following steps are involved: Step 1: Process the steel beam, install the channel steel support at the lower end of the steel beam, install the corbels on both sides of the lower end of the steel beam, and install the lifting lugs at the upper end of the steel beam; Step 2: Tie the steel bars of the concrete column, then set up the support frame, set up the formwork, and nail the limit nails on the formwork; Step 3: Use on-site lifting machinery to lift the steel beam to the corresponding position and adjust the position of the steel beam according to the limit nails; Step 4: After the steel beam is adjusted, fix the channel steel support with iron nails. Finally, the bottom reinforcement of the steel beam passes through the channel steel support to complete the beam reinforcement binding and the pouring of the concrete column.

6. The construction method of the steel girder and concrete column connection joint without steel columns according to claim 5, characterized in that: The limiting iron nails are located on both sides of the channel steel support of the steel beam.

7. The construction method of the connection node between steel beam and concrete column without steel column according to claim 6, characterized in that: The corbel and channel steel support are welded to the lower end of the steel beam, and the lifting lug is welded to the upper end of the steel beam.

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