Connecting system of steel primary beam and concrete secondary beam and construction method of connecting system

Abstract

The invention discloses a connecting system of a steel main beam and a concrete secondary beam and a construction method of the connecting system, and the connecting system comprises the steel main beam which is connected to the top of an existing structural column; the top face of a transverse plate of the T-shaped steel beam is flush with the top face of the steel main beam, one end of a vertical plate of the T-shaped steel beam is connected with the steel main beam, and the other end of the vertical plate of the T-shaped steel beam extends to the designed construction position of the concrete secondary beam and forms a shear-resistant steel plate. The top face of the concrete secondary beam is flush with the top face of the transverse plate, the shear-resistant steel plate is anchored to the end of the concrete secondary beam, and the construction efficiency and the structural strength are improved by arranging the connecting system.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a connection system of a steel main beam and a concrete secondary beam and a construction method thereof. Background Art

[0002] In the prior art, it is necessary to pre-embed steel embedded parts on both sides of the structural column for welding and fixing of the steel main beam. This connection form has high requirements for welding. In addition, when tying the steel cage of the concrete secondary beam, the steel bars need to be denser when close to the steel main beam. The closer to the steel main beam, the smaller the tying space for the steel cage of the concrete secondary beam, which makes construction difficult. In addition, the steel main beam and the concrete secondary beam are connected by subsequent integral pouring of concrete. This connection has low tightness, which affects the overall structural strength. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art, provide a connection system and a construction method for a steel main beam and a concrete secondary beam, provide a reliable connection between the steel main beam and the concrete secondary beam, avoid the construction of embedded parts on existing structural columns, and improve construction efficiency and structural strength.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is a connection system between a steel main beam and a concrete secondary beam, comprising:

[0005] A steel main beam connected to the top of the existing structural column;

[0006] A T-shaped steel beam, wherein the top surface of the transverse plate of the T-shaped steel beam is flush with the top surface of the steel main beam, one end of the vertical plate of the T-shaped steel beam is connected to the steel main beam, and the other end extends to the designed construction position of the concrete secondary beam and is formed with a shear steel plate;

[0007] A concrete secondary beam, the top surface of which is flush with the top surface of the transverse plate, and the shear steel plate is anchored at the end of the concrete secondary beam.

[0008] A further improvement of the connection system between the steel main beam and the concrete secondary beam of the present invention is that the steel main beam includes an I-beam and a stiffening plate, the upper and lower ends of the stiffening plate are respectively connected to the relative inner sides of the upper and lower flange plates of the I-beam, and one side of the stiffening plate is connected to the web of the I-beam.

[0009] A further improvement of the connection system between the steel main beam and the concrete secondary beam of the present invention is that the vertical plate and the stiffening plate are connected by a connecting plate, and both ends of the connecting plate are connected to the vertical plate and the stiffening plate by bolts.

[0010] A further improvement of the connection system between the steel main beam and the concrete secondary beam of the present invention is that there are multiple steel main beams and multiple concrete secondary beams, and the multiple steel main beams and multiple concrete secondary beams cross each other to form a grid structure. There are multiple T-shaped steel beams, and each of the concrete secondary beams is pre-embedded with the T-shaped steel beam at one end relatively close to the corresponding steel main beam. There are multiple stiffening plates, and the multiple stiffening plates are arranged at intervals along the length direction of the I-beam and correspond one-to-one to the multiple T-shaped steel beams.

[0011] A further improvement of the connection system of the steel main beam and the concrete secondary beam of the present invention is that the top surface of the steel main beam and the top surface of the cross plate of the T-shaped steel beam are both connected with bolts for anchoring to the concrete floor slab.

[0012] A construction method of the connection system of the steel main beam and the concrete secondary beam as described above comprises the steps of:

[0013] Step 1: Connect the steel main beam to the top of the existing structural column;

[0014] Step 2: Connect one end of the T-shaped steel beam to the steel main beam, and extend the other end to the designed construction position of the concrete secondary beam and form a shear steel plate;

[0015] Step 3: Tie up the steel cage of the concrete secondary beam, support the formwork around the steel cage, the steel main beam and the T-shaped steel beam, and cast the whole structure so that the shear steel plate is embedded in the concrete secondary beam.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. By setting T-shaped steel beams, a reliable connection is improved between the steel main beam and the concrete secondary beam, avoiding the problem of difficulty in tying the steel cage of the concrete secondary beam.

[0018] 2. By setting studs, the connection tightness between the concrete floor and the beam structure is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the connection system between the steel main beam and the concrete secondary beam of the present invention.

[0021] In the figure: 1. I-beam; 2. Stiffener plate; 3. Horizontal plate; 4. Vertical plate; 5. Shear steel plate; 6. Concrete secondary beam; 7. Studs; 8. Concrete floor slab; 9. Connecting plate; 10. Bolts. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] The connection system between the steel main beam and the concrete secondary beam and the construction method thereof are further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] See also Figure 1 As shown in the figure, the connection system between the steel main beam and the concrete secondary beam includes:

[0025] A steel main beam that is attached to the top of the existing structural columns;

[0026] A T-shaped steel beam, wherein the top surface of the transverse plate 3 of the T-shaped steel beam is flush with the top surface of the steel main beam, one end of the vertical plate 4 of the T-shaped steel beam is connected to the steel main beam, and the other end extends to the designed construction position of the concrete secondary beam 6 and is formed with a shear steel plate 5;

[0027] A concrete secondary beam 6 , the top surface of which is flush with the top surface of the transverse plate 3 , and the shear steel plate 5 is anchored at the end of the concrete secondary beam 6 .

[0028] Specifically, the top surface of the T-shaped steel beam, the top surface of the steel main beam and the top surface of the concrete secondary beam 6 are constructed with a concrete floor slab 8 .

[0029] Preferably, the steel main beam includes an I-beam 1 and a stiffening plate 2 , wherein the upper and lower ends of the stiffening plate 2 are respectively connected to the relative inner sides of the upper and lower flange plates of the I-beam 1 , and one side of the stiffening plate 2 is connected to the web of the I-beam 1 .

[0030] By providing the stiffening plate 2, an installation foundation is provided for the T-shaped steel beam, thereby preventing the T-shaped steel beam from being directly connected to the steel main beam, thereby preventing the structural stability from being affected.

[0031] Preferably, the vertical plate 4 and the stiffening plate 2 are connected via a connecting plate 9 , and both ends of the connecting plate 9 are connected to the vertical plate 4 and the stiffening plate 2 via bolts 10 .

[0032] Specifically, two ends of the connecting plate 9 are respectively placed on the stiffening plate 2 and the vertical plate 4 , and connecting holes for the bolts 10 to pass through are provided on the connecting plate 9 , the vertical plate 4 and the stiffening plate 2 .

[0033] Preferably, the number of the steel main beams and the number of the concrete secondary beams 6 are both multiple, and the multiple steel main beams and the multiple concrete secondary beams 6 cross to form a grid structure. The number of the T-shaped steel beams is multiple, and each of the concrete secondary beams 6 is pre-buried with the T-shaped steel beam at one end relatively close to the corresponding steel main beam. The number of the stiffening plates 2 is multiple, and the multiple stiffening plates 2 are spaced apart along the length direction of the I-beam 1 and correspond one-to-one to the multiple T-shaped steel beams.

[0034] Preferably, the top surface of the steel main beam and the top surface of the cross plate 3 of the T-shaped steel beam are both connected with bolts 7 for anchoring to the concrete floor slab 8.

[0035] By providing the bolt 7, when the concrete floor slab 8 is subsequently poured, the steel main beam and the T-shaped steel beam are tightly connected to the concrete floor slab 8, thereby improving the integrity of the beam and slab.

[0036] A construction method of the connection system of the steel main beam and the concrete secondary beam as described above comprises the steps of:

[0037] Step 1: Connect the steel main beam to the top of the existing structural column;

[0038] Step 2: Connect one end of the T-shaped steel beam to the steel main beam, and extend the other end to the designed construction position of the concrete secondary beam 6 to form a shear steel plate 5;

[0039] Step 3: Tie up the steel cage of the concrete secondary beam 6 , support the formwork on the outer periphery of the steel cage, the steel main beam and the T-shaped steel beam, and cast the whole structure so that the shear steel plate 5 is embedded in the concrete secondary beam 6 .

[0040] Specifically, the top surface of the steel main beam and the top surface of the cross plate 3 of the T-shaped steel beam are connected with bolts 7;

[0041] When executing the above step 4, the steel cage of the concrete slab 8 is tied synchronously when the steel cage of the concrete secondary beam 6 is tied, the formwork of the concrete slab 8 is supported synchronously when the formwork is supported, and the concrete slab 8 is cast synchronously when the overall casting is performed, so that the bolt 7 is anchored in the concrete slab 8.

[0042] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0043] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A connection system between a steel main beam and a concrete secondary beam, characterized in that: include: A steel main beam connected to the top of the existing structural column; A T-shaped steel beam, wherein the top surface of the transverse plate of the T-shaped steel beam is flush with the top surface of the steel main beam, one end of the vertical plate of the T-shaped steel beam is connected to the steel main beam, and the other end extends to the designed construction position of the concrete secondary beam and is formed with a shear steel plate; A concrete secondary beam, the top surface of which is flush with the top surface of the transverse plate, and the shear steel plate is anchored at the end of the concrete secondary beam.

2. The connection system between the steel main beam and the concrete secondary beam according to claim 1, characterized in that: The steel main beam includes an I-beam and a stiffening plate, wherein upper and lower ends of the stiffening plate are respectively connected to the opposite inner sides of upper and lower flange plates of the I-beam, and one side of the stiffening plate is connected to the web of the I-beam.

3. The connection system between the steel main beam and the concrete secondary beam according to claim 2, characterized in that: The vertical plate and the stiffening plate are connected via a connecting plate, and both ends of the connecting plate are connected to the vertical plate and the stiffening plate via bolts.

4. The connection system of the steel main beam and the concrete secondary beam according to claim 3, characterized in that: There are multiple steel main beams and multiple concrete secondary beams, and the multiple steel main beams and multiple concrete secondary beams cross each other to form a grid structure. There are multiple T-shaped steel beams, and each concrete secondary beam is pre-embedded with the T-shaped steel beam at one end relatively close to the corresponding steel main beam. There are multiple stiffening plates, and the multiple stiffening plates are spaced apart along the length direction of the I-beam and correspond one-to-one to the multiple T-shaped steel beams.

5. The connection system of the steel main beam and the concrete secondary beam according to claim 1, characterized in that: The top surface of the steel main beam and the top surface of the transverse plate of the T-shaped steel beam are both connected with bolts for anchoring to the concrete floor slab.

6. A construction method for the connection system of the steel main beam and the concrete secondary beam as claimed in claim 1, characterized in that: Includes steps: Step 1: Connect the steel main beam to the top of the existing structural column; Step 2: Connect one end of the T-shaped steel beam to the steel main beam, and extend the other end to the designed construction position of the concrete secondary beam and form a shear steel plate; Step 3: Tie up the steel cage of the concrete secondary beam, support the formwork around the steel cage, the steel main beam and the T-shaped steel beam, and cast the whole structure so that the shear steel plate is embedded in the concrete secondary beam.

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