A steel-concrete composite beam

Abstract

This utility model provides a steel-concrete composite beam, relating to the field of composite beam technology. It includes a column, an upper crossbeam, a lower crossbeam, and several support rods. The column is equipped with a support plate for connecting the upper and lower crossbeams. The bottom of the upper crossbeam and the top of the lower crossbeam are respectively provided with upper and lower side flanges. Connecting holes are formed along the length of the upper and lower side flanges. The upper and lower ends of the support rods are hooked into the corresponding connecting holes. This steel-concrete composite beam, using several support rods supported along the length of the crossbeams between the upper and lower crossbeams, solves the problem of the lack of tensile support on both sides of the web of traditional H-beams, effectively avoiding the risk of later concrete cracking and increasing the overall strength of the crossbeam.

Description

Technical Field

[0001] This utility model relates to the field of composite beam technology, specifically a steel-concrete composite beam. Background Technology

[0002] In civil buildings, the more mature prefabricated building structural systems currently include PC structures, steel structures, and steel-concrete composite structures. PC structures are widely used, but they are criticized for issues such as the reliability of vertical splicing nodes, and their heavy weight affects installation efficiency. Steel structures, while having relatively reliable node construction and easily guaranteed construction quality, suffer from poor sound insulation and heat preservation, low stiffness, poor comfort, and the need for additional fireproofing and corrosion protection—challenges that must be overcome in residential buildings. Steel-concrete composite structures combine the advantages of both PC and steel structures. Some structural systems, such as partially concrete-clad composite structures, with a large area of ​​concrete covering the main body and connection nodes similar to steel structures, perfectly overcome the shortcomings of both steel and PC structures, but still suffer from high steel consumption.

[0003] Steel-concrete H-beams are a commonly used structure in prefabricated buildings. These composite beams use H-beams as a skeleton, with concrete poured into cavities on both sides of the H-beam's web. Typically, they are cast in two stages at the factory. However, because the H-beam's web lacks adequate tensile support, the concrete is prone to cracking later, leading to problems such as water seepage and weak load-bearing capacity.

[0004] This case arose from the aforementioned issues. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a steel-concrete composite beam, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a steel-concrete composite beam, including a column, an upper crossbeam, a lower crossbeam, and several support rods. The column is provided with a support plate for connecting the upper and lower crossbeams. The bottom of the upper crossbeam and the top of the lower crossbeam are respectively provided with an upper wing plate and a lower wing plate. The upper and lower wing plates are provided with connecting holes along their length direction. The upper and lower ends of the support rods are respectively hooked into the corresponding connecting holes.

[0009] Preferably, the support rod consists of an upper support rod and a lower support rod, the lower support rod being a sleeve, and one end of the upper support rod being able to be inserted into the lower support rod.

[0010] Preferably, the connecting hole on the upper wing plate is an elongated groove that extends vertically, and the connecting hole on the lower wing plate is a through hole.

[0011] Preferably, the ends of the upper support rod and the lower support rod are respectively provided with U-shaped bent hook one and hook two.

[0012] Preferably, the upper crossbeam, the lower crossbeam, and the support plate are provided with screw holes at corresponding locations, and the screw holes of the two are connected by connecting bolts.

[0013] Preferably, the bottom of the upper crossbeam and the top of the lower crossbeam are respectively provided with two sets of upper and lower wing plates, the two sets of upper and lower wing plates are arranged symmetrically, and a support rod is provided between the corresponding upper and lower wing plates in each set.

[0014] (III) Beneficial Effects

[0015] This utility model provides a steel-concrete composite beam. It has the following beneficial effects:

[0016] 1. This steel-concrete composite beam utilizes several support rods along the length of the beam between the upper and lower crossbeams, which solves the problem of the lack of tensile support on both sides of the web of the traditional H-beam, effectively avoiding the risk of concrete cracking in the later stage and increasing the overall strength of the beam.

[0017] 2. When installing this steel-concrete composite beam, first hook the second bend of the lower support rod into the through hole, then insert the straight section of the upper support rod onto the lower support rod, and finally hook the first bend of the upper support rod into the long slot. Utilizing the adjustability of the long slot, the first bend can be smoothly hooked into it. At this time, the weight of the upper support rod hangs vertically downwards, allowing the first bend to hang on the long slot. The upper and lower support rods will not detach from each other, making installation relatively convenient. Attached Figure Description

[0018] Figure 1 This is an isometric view of the present invention;

[0019] Figure 2 This is a schematic diagram of the support rod structure of this utility model;

[0020] Figure 3 This is a side sectional view of the present invention.

[0021] In the diagram: 1. Column, 2. Support plate, 3. Connecting bolt, 4. Upper crossbeam, 5. Lower crossbeam, 6. Upper side wing plate, 7. Lower side wing plate, 8. Upper support rod, 9. Lower support rod, 10. Long groove, 11. Through hole, 12. Hook one, 13. Hook two. Detailed Implementation

[0022] This utility model embodiment provides a steel-concrete composite beam, such as Figure 1-3 As shown, it includes column 1, upper crossbeam 4, lower crossbeam 5, and several support rods.

[0023] The column 1 is equipped with a support plate 2 for connecting the upper crossbeam 4 and the lower crossbeam 5. The support plate 2 is concave, and the grooves on the upper and lower sides of the support plate 2 are arranged correspondingly. The upper crossbeam 4 and the lower crossbeam 5 are provided with screw holes at corresponding positions on the support plate 2, and the screw holes of the two are connected by connecting bolts 3. The traditional H-beam is decomposed into the upper crossbeam 4 and the lower crossbeam 5.

[0024] The bottom of the upper crossbeam 4 and the top of the lower crossbeam 5 are respectively provided with upper side wing plates 6 and lower side wing plates 7. Two sets of upper side wing plates 6 and lower side wing plates 7 are provided at the bottom of the upper crossbeam 4 and the top of the lower crossbeam 5, respectively, and the two sets of upper side wing plates 6 and lower side wing plates 7 are arranged symmetrically. Connecting holes are formed along the length of the upper side wing plates 6 and lower side wing plates 7, and the upper and lower ends of the support rods are hooked into the corresponding connecting holes. A support rod is provided between each set of corresponding upper and lower side wing plates 6 and lower side wing plates 7.

[0025] By using several support rods along the length of the beam between the upper beam 4 and the lower beam 5, the problem of the lack of tensile support on both sides of the web of the traditional H-beam can be solved, effectively avoiding the risk of concrete cracking in the later stage and increasing the overall strength of the beam.

[0026] Because the support rod has hooks at both ends, once the upper support rod hooks onto the connecting hole, it's difficult for the lower hook to engage with the corresponding connecting hole. Therefore, the structure of the support rod and connecting hole needs to be improved.

[0027] Specifically, such as Figure 2-3 As shown, the support rod consists of an upper support rod 8 and a lower support rod 9. The lower support rod 9 is a sleeve, and one end of the upper support rod 8 can be inserted into the lower support rod 9. This allows the length between the upper support rod 8 and the lower support rod 9 to be adjustable. The ends of the upper support rod 8 and the lower support rod 9 are respectively provided with U-shaped bends 12 and 13.

[0028] The connecting hole on the upper wing plate 6 is a long groove 10, which extends vertically. The length of the hook 12 is less than the length of the long groove 10. The connecting hole on the lower wing plate 7 is a through hole 11.

[0029] During installation, first hook the second hook 13 of the lower support rod 9 into the through hole 11, then insert the straight section of the upper support rod 8 into the lower support rod 9, and finally hook the first hook 12 of the upper support rod 8 into the long groove 10. Utilizing the adjustability of the long groove 10, the first hook 12 can be smoothly hooked into it. At this time, the upper support rod 8 hangs vertically downwards under its own weight, allowing the first hook 12 to hang on the long groove 10. The upper support rod 8 and the lower support rod 9 will not detach from each other, making installation relatively convenient.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel-concrete composite beam, characterized in that: It includes a column (1), an upper crossbeam (4), a lower crossbeam (5), and several support rods. The column (1) is provided with a support plate (2) for connecting the upper crossbeam (4) and the lower crossbeam (5). The bottom of the upper crossbeam (4) and the top of the lower crossbeam (5) are respectively provided with an upper side wing plate (6) and a lower side wing plate (7). The upper side wing plate (6) and the lower side wing plate (7) are provided with connecting holes along their length direction. The upper and lower ends of the support rods are respectively hooked into the corresponding connecting holes.

2. A steel-concrete composite beam according to claim 1, characterized in that: The support rod consists of an upper support rod (8) and a lower support rod (9). The lower support rod (9) is a sleeve, and one end of the upper support rod (8) can be inserted into the lower support rod (9).

3. A steel-concrete composite beam according to claim 2, characterized in that: The connecting hole on the upper wing plate (6) is a long groove (10) that extends vertically, and the connecting hole on the lower wing plate (7) is a through hole (11).

4. A steel-concrete composite beam according to claim 2, characterized in that: The ends of the upper support rod (8) and the lower support rod (9) are respectively provided with U-shaped bent hooks one (12) and two hooks (13).

5. A steel-concrete composite beam according to claim 1, characterized in that: The upper crossbeam (4), lower crossbeam (5) and the support plate (2) are provided with screw holes at their corresponding positions, and the screw holes of the two are connected by connecting bolts (3).

6. A steel-concrete composite beam according to claim 1, characterized in that: The bottom of the upper crossbeam (4) and the top of the lower crossbeam (5) are respectively provided with two sets of upper side wing plates (6) and lower side wing plates (7). The two sets of upper side wing plates (6) and lower side wing plates (7) are arranged symmetrically, and a support rod is provided between each set of upper side wing plates (6) and lower side wing plates (7) corresponding to each other.

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