Steel reinforced concrete composite beam

Abstract

The utility model provides a steel reinforced concrete composite beam which comprises stirrups, longitudinal bars fixedly connected to the inner sides of the stirrups through binding wires and section steel located on the inner sides of the stirrups, and is characterized in that limiting plates which are symmetrically distributed are fixedly installed in the top and the bottom of the section steel through rivets; the outer side of the longitudinal bar is sleeved with a supporting mechanism clamped between the profile steel and the limiting plate. According to the steel reinforced concrete composite beam, the rivets, the limiting plates, the supporting plates, the fixing pins, the pressing plates and the bolts are used in cooperation, so that the steel reinforced concrete composite beam can limit and support longitudinal bars bundled by the section steel, and the longitudinal bars and the section steel are directly connected; furthermore, the bound stirrups and longitudinal bars are not easy to deviate in the concrete pouring process, concrete pouring is facilitated, and when external force acts on the steel reinforced concrete composite beam, the external force can be uniformly distributed to the longitudinal bars and the section steel for bearing, so that the bearing capacity of the steel reinforced concrete composite beam is improved.

Description

Technical Field

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

[0002] The integrated application of steel profiles, reinforcing bars, and concrete gives steel-concrete composite structures the advantages of greater load-bearing capacity, greater stiffness, and better seismic performance compared to traditional reinforced concrete structures.

[0003] In existing steel-concrete composite beams, the longitudinal reinforcement is not directly connected to the steel section. This makes it easy for the stirrups and longitudinal reinforcement tied to the outside of the steel section to shift during the concrete pouring process, which is not convenient for concrete pouring. Furthermore, when external forces are applied to the steel-concrete composite beam, they cannot be evenly distributed to the longitudinal reinforcement and steel section to bear the load, resulting in a reduction in the load-bearing capacity of the steel-concrete composite beam. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a steel-concrete composite beam, including longitudinal bars fixedly connected to the inner side of the stirrups by ties and steel sections located inside the stirrups, characterized in that: symmetrically distributed limiting plates are fixedly installed inside the top and bottom of the steel section by rivets, a support mechanism is fitted on the outer side of the longitudinal bars and snapped between the steel section and the limiting plates, bolts located inside the support mechanism are threaded inside the limiting plates, and concrete is poured on the outer side of the steel section.

[0005] Preferably, the support mechanism includes a support plate that is snapped between the steel section and the limiting plate and is fitted on the outside of the longitudinal reinforcement. The inside of the support plate is rotatably connected by a fixing pin to a pressure plate fitted on the outside of the longitudinal reinforcement and located on the outside of the bolt.

[0006] Preferably, the bottom end of the bolt is in contact with the surface of the support plate.

[0007] Preferably, the pressure plate has a guide groove inside that is adapted to the bolt, and the length of the guide groove is greater than the outer diameter of the guide groove.

[0008] The advantages of this utility model are as follows:

[0009] 1. This steel-concrete composite beam, through the combined use of rivets, limiting plates, support plates, fixing pins, pressure plates, and bolts, enables the steel-concrete composite beam to limit and support the longitudinal reinforcement tied to the steel section, allowing direct connection between the longitudinal reinforcement and the steel section. Consequently, during concrete pouring, the tied stirrups and longitudinal reinforcement are less likely to shift, facilitating concrete pouring. Furthermore, when external forces are applied to the steel-concrete composite beam, they can be evenly distributed among the longitudinal reinforcement and the steel section, thereby increasing the load-bearing capacity of the steel-concrete composite beam.

[0010] 2. This steel-concrete composite beam allows the support mechanism to be directly installed on the outside of the stirrups by opening the support plate and pressure plate. This allows the stirrups and longitudinal bars to be tied on the outside of the steel before the support mechanism is installed, ensuring that the support mechanism does not affect the tying of the stirrups and longitudinal bars. Attached Figure Description

[0011] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a partial sectional view of the side of the structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the support mechanism of this utility model.

[0015] In the diagram: 1. Stirrup; 2. Longitudinal reinforcement; 3. Steel section; 4. Rivet; 5. Limiting plate; 6. Support mechanism; 61. Support plate; 62. Fixing pin; 63. Pressure plate; 7. Bolt; 8. Concrete; 9. Guide groove. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0017] The accompanying drawings in this utility model embodiment: different types of cross-sectional lines in the drawings are not labeled according to national standards, nor do they specify the material requirements of the components. They are used to distinguish the cross-sectional views of the components in the drawings.

[0018] Please see Figure 1-3 A steel-concrete composite beam includes longitudinal bars 2 fixedly connected to the inner side of stirrups 1 by tie wires, and steel sections 3 located inside the stirrups 1. The top and bottom of the steel section 3 are fixedly installed with symmetrically distributed limiting plates 5 by rivets 4. The limiting plates 5 can be stably fixed to the top and bottom of the steel section 3 by the rivets 4. Even if the steel section 3 is subjected to external force and undergoes bending deformation, the limiting plates 5 will not fall off the surface of the steel section 3, thereby ensuring that the support mechanism 6 can stably limit and support the longitudinal bars 2. The outer side of the longitudinal bars 2 is fitted with the support mechanism 6, which is snapped between the steel section 3 and the limiting plates 5. The inner thread of the limiting plates 5 is fitted with bolts 7 located inside the support mechanism 6. Concrete 8 is poured on the outer side of the steel section 3.

[0019] The support mechanism 6 includes a support plate 61 that is snapped between the steel section 3 and the limiting plate 5 and is fitted on the outside of the longitudinal rib 2. Inside the support plate 61, a pressure plate 63 is rotatably connected via a fixing pin 62 and is fitted on the outside of the longitudinal rib 2 and located outside the bolt 7. By tightening the bolt 7, the pressure plate 63 can be rotated around the axis of the fixing pin 62, while clamping and fixing the longitudinal rib 2 between the support plate 61 and the pressure plate 63.

[0020] The bottom end of the bolt 7 contacts the surface of the support plate 61. When the bolt 7 is tightened, the bottom of the bolt 7 can simultaneously press and fix the support plate 61, thereby preventing the support plate 61 from coming off the inside of the limiting plate 5. This allows the support plate 61 and the pressure plate 63 to stably limit and support the longitudinal rib 2.

[0021] The pressure plate 63 has a guide groove 9 inside that is compatible with the bolt 7. The length of the guide groove 9 is greater than the outer diameter of the guide groove 9. The bolt 7 can be positioned by the guide groove 9, so that the support plate 61 can move inside the limiting plate 5 when the support mechanism 6 is installed. This allows the distance between the longitudinal rib 2 and the support plate 61 to be adjusted, ensuring that the support plate 61 and the pressure plate 63 can be fitted onto the outside of the longitudinal rib 2.

[0022] Before pouring concrete 8, after lifting the steel section 3, the stirrups 1 are fitted onto the outside of the steel section 3, and the longitudinal bars 2 are inserted into the inside of the stirrups 1. The stirrups 1 are then fixed to the outside of the longitudinal bars 2 one by one using tie wire. After lifting the stirrups 1 and longitudinal bars 2 again, the support plate 61 and pressure plate 63 are opened. The support plate 61 is inserted into the inside of the limiting plate 5, and the support plate 61 is pushed to fit onto the outside of the longitudinal bars 2. The pressure plate 63 is rotated around the main axis of the fixing pin 62 to fit onto the outside of the longitudinal bars 2. The bolts are then tightened. After inserting the bolt 7 into the inside of the guide groove 9, thread it onto the inside of the limiting plate 5 and tighten the bolt 7. At this time, the bolt 7 drives the pressure plate 63 to rotate around the direction of the longitudinal rib 2, while pressing and fixing the longitudinal rib 2 between the support plate 61 and the pressure plate 63. After the bolt 7 is fully tightened and fixed, the bolt 7 can press and fix the support plate 61. When all the support mechanisms 6 are assembled, the concrete 8 is poured. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A steel-concrete composite beam, comprising stirrups (1) fixedly connected to longitudinal bars (2) inside the stirrups (1) by tie wires, and steel sections (3) located inside the stirrups (1), characterized in that: The top and bottom of the steel section (3) are fixed with symmetrically distributed limiting plates (5) by rivets (4). The outer side of the longitudinal reinforcement (2) is fitted with a support mechanism (6) that is snapped between the steel section (3) and the limiting plate (5). The inner thread of the limiting plate (5) is fitted with a bolt (7) located inside the support mechanism (6). The outer side of the steel section (3) is filled with concrete (8).

2. The steel-concrete composite beam according to claim 1, characterized in that: The support mechanism (6) includes a support plate (61) that is snapped between the steel section (3) and the limiting plate (5) and is fitted on the outside of the longitudinal rib (2). The inside of the support plate (61) is rotatably connected by a fixing pin (62) to a pressure plate (63) that is fitted on the outside of the longitudinal rib (2) and located outside the bolt (7).

3. A steel-concrete composite beam according to claim 2, characterized in that: The bottom end of the bolt (7) is in contact with the surface of the support plate (61).

4. A steel-concrete composite beam according to claim 2, characterized in that: The pressure plate (63) has a guide groove (9) inside that is compatible with the bolt (7), and the length of the guide groove (9) is greater than the outer diameter of the guide groove (9).

Images