Steel-concrete composite beam

Abstract

The utility model relates to a steel-concrete composite beam which comprises a bridge deck slab in the length direction of the bridge deck slab. The web plate is arranged on the lower surface of the bridge deck slab, and the web plate is arranged in the length direction of the bridge deck slab; the number of the web plates is at least two, and the distances between the adjacent web plates are the same in the width direction of the bridge deck slab; the bottom plate is arranged on the lower portions of the web plates, the bottom plate is arranged in the length direction of the bridge deck slab, and the bottom plate is connected with all the web plates at the same time; wherein a connecting plate is arranged on the lower surface of the bridge deck slab, and the connecting plate is connected with the web plate; the adjacent connecting plates are connected through parallel connecting rod pieces; when the width of the bridge deck is changed, the distance between every two adjacent web plates and the width of the bottom plate are correspondingly changed. According to the utility model, the torsional rigidity of the steel-concrete composite beam is enhanced through the flat connecting rod pieces arranged on the lower surfaces of the webs.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering composite structures, in particular to a steel-concrete composite beam. Background Art

[0002] The outstanding feature of steel-concrete composite structures is their rational load-bearing properties, which give them high strength and rigidity and enable them to withstand heavy loads. They have broad application prospects and important practical value in bridge engineering.

[0003] However, during actual construction, some bridges incorporate curved designs and varying deck widths to adapt to complex terrain, ensure load-bearing conditions, and create aesthetically pleasing architectural styles, enhancing the bridge's artistic value. Curved and variable-diameter bridge designs require not only enhanced structural torsional rigidity but also improved adaptability of composite beam widths. Existing steel-concrete composite structures lack sufficient torsional rigidity and cannot be directly applied to curved and variable-diameter bridges.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0005] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a steel-concrete composite beam to adapt to the design of more structural bridges.

[0006] The technical solution of the utility model is as follows:

[0007] A steel-concrete composite beam comprises: a bridge deck along the length direction of the bridge deck; a web plate arranged on the lower surface of the bridge deck, the web plate being arranged along the length direction of the bridge deck; at least two web plates are provided, and the spacing between adjacent web plates along the width direction of the bridge deck is the same; a bottom plate arranged at the lower part of the web plate, the bottom plate being arranged along the length direction of the bridge deck, and the bottom plate connecting all the web plates at the same time; wherein, a connecting plate is provided on the lower surface of the bridge deck, the connecting plate connecting the web plates; adjacent connecting plates are connected by parallel connecting rods; when the width of the bridge deck changes, the spacing between adjacent web plates and the width of the bottom plate change accordingly.

[0008] The beneficial technical effects of the present utility model are as follows:

[0009] (1) In the steel-concrete composite beam of the present invention, a web is provided on the back of the bridge deck, and a bottom plate is connected to the lower portion of the web. When the width of the deck changes, the spacing between adjacent webs and the width of the bottom plate change accordingly. This ensures that the webs and bottom plate can stably support the bridge deck even when the size of the deck changes. At the same time, parallel connecting rods are provided, and the parallel connecting rods are interconnected by connecting plates provided on the lower surface of the webs, thereby enhancing the torsional rigidity of the steel-concrete composite beam.

[0010] (2) Furthermore, the bridge deck is provided with a thickened section and a uniform thickness section, wherein the thickened section has a thicker bridge deck and a stronger load-bearing capacity. The uniform thickness section is thinner than the thickened section to save materials and costs.

[0011] (3) Furthermore, a node plate is provided, through which the parallel rods are fixed to the connecting plate. The node plate connects the intersecting parallel rods and the connecting plate to increase the torsional stiffness of the bridge deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The main structural diagram of the steel-concrete composite beam of the present invention is shown.

[0013] Figure 2 The vertical cross-sectional structure diagram of the steel-concrete composite beam of the present invention is shown.

[0014] Figure 3 The utility model shows a schematic diagram of the assembly structure of the parallel connecting rod in the steel-concrete composite beam.

[0015] Figure 4 A partial enlarged view of the steel-concrete composite beam of the present invention at point A is shown.

[0016] Markings in the accompanying drawings:

[0017] 1. Bridge deck; 11. Web; 12. Thickened section; 13. Constant thickness section; 14. Connecting plate; 2. Parallel connecting member; 21. Node plate; 3. Diaphragm; 5. Bottom plate; 51. Thickened section; 6. Support. DETAILED DESCRIPTION

[0018] To make the purposes, features, and advantages of this utility model more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not intended to limit the conditions for the implementation of this utility model and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, as long as they do not affect the efficacy and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0019] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are defined as indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0020] Figure 1 The main structural diagram of the steel-concrete composite beam of the present invention is shown. Figure 2 The vertical cross-sectional structure diagram of the steel-concrete composite beam of the present invention is shown in FIG. Figure 1 and Figure 2 A steel-concrete composite beam comprises a bridge deck 1, a web 11 and a bottom plate 5. The bridge deck 1 is along the length direction of the bridge deck 1. The web 11 is arranged on the lower surface of the bridge deck 1, and the web 11 is arranged along the length direction of the bridge deck 1. There are at least two webs 11, and the spacing between adjacent webs 11 is the same along the width direction of the bridge deck 1. The bottom plate 5 is arranged at the lower part of the web 11, and the bottom plate 5 is arranged along the length direction of the bridge deck 1, and the bottom plate 5 connects all the webs 11 at the same time. When the width of the panel changes, the spacing between adjacent webs 11 and the width of the bottom plate 5 change accordingly. Ensure that when the size of the bridge deck 1 changes, the web 11 and the bottom plate 5 can stably support the bridge deck 1.

[0021] The lower surface of the bridge deck 1 is provided with connecting plates 14, which connect to the webs 11. Adjacent connecting plates 14 are connected by parallel rods 2. These parallel rods 2 are interconnected via the connecting plates 14, located on the lower surface of the webs 11, enhancing the torsional rigidity of the steel-concrete composite beam. If the width of the bridge deck needs to be changed, parallel rods 2 of corresponding length can be installed.

[0022] The specific structure of the bridge deck 1 is described below:

[0023] Please refer to Figure 1 and Figure 2 Along the width of the bridge deck 1, the bridge deck 1 includes a uniform thickness section 13 and a thickened section 12, supported at both ends by supports 6. The upper surfaces of the uniform thickness sections 13 and the thickened section 12 are flush, while the lower surface of the thickened section 12 is lower than that of the uniform thickness sections 13. The uniform thickness sections 13 and the thickened sections 12 are staggered. The bridge deck 1 is thicker in the thickened section 12, providing a greater load-bearing capacity. The uniform thickness sections 13 are thinner than the thickened sections 12 to save material and cost.

[0024] Furthermore, a connecting plate 14 is provided on the lower surface of the thickened section 12. The web 11 is connected to the thickened section 12 of the bridge deck 1 via the connecting plate 14, allowing the thickened section 12, with its greater load-bearing capacity, to directly support the web 11. As the width of the bridge deck 1 changes, the width of the thickened section 12 remains unchanged, while the width of the uniform thickness section 13 changes accordingly. This adjustment solution is simple and adapts to the need for widening the bridge deck 1.

[0025] The specific structure of the gusset plate 21 is described below:

[0026] Figure 3 The figure shows the assembly structure diagram of the parallel connecting rod 2 in the steel-concrete composite beam of the present invention. Figure 2 and Figure 3 Node plates 21 are provided on the connecting plates 14, and the ends of the paralleling members 2 are connected to different node plates 21. Furthermore, along the width of the bridge deck 1, the node plates 21 on the connecting plates 14 of adjacent webs 11 are staggered. This arrangement creates a plurality of small triangles, which are staggered. The staggered arrangement of the paralleling members 2 effectively distributes and transfers loads. Furthermore, the triangular structure provides greater structural stability, thereby enhancing the overall stability of the bridge deck 1 and effectively reducing deformation and damage to the bridge deck 1 during use.

[0027] The specific structure of the bottom plate 5 and the web 11 is described below:

[0028] Figure 4 The following is a partial enlarged view of the steel-concrete composite beam of the present invention at point A. Figure 2 and Figure 4 , along the length direction of the bridge deck 1, a thickened section 51 is provided on the bottom plate 5. The thickened section 51 can withstand a larger load to withstand the extrusion and tension generated during the use of the steel-concrete composite beam, thereby ensuring the structural strength of the steel-concrete composite beam. The bridge deck 1, the web 11 and the bottom plate 5 have the same bending curvature in the horizontal direction. When the bridge has a horizontal curvature, the bridge deck 1, the web 11 and the bottom plate 5 form curvatures of the same curvature in the horizontal direction, cooperating with each other to form a curved bridge. Along the width direction of the bridge deck 1, a diaphragm 3 is provided on the lower surface of the bridge deck 1, and a diaphragm 3 is connected between adjacent webs 11. The diaphragm 3, the web 11 and the bottom plate 5 are enclosed to form a box chamber. The diaphragm 3 is used to further increase the torsional stiffness of the steel-concrete composite beam.

[0029] The specific assembly process of this utility model is as follows:

[0030] According to the designed width of the bridge, the width of the uniform thickness section 13 is uniformly adjusted to adjust the width of the bridge deck 1. The length of the parallel rod 2 and the width of the bottom plate 5 are simultaneously set to match the width of the bridge deck 1. At this time, the spacing between adjacent webs 11 and the horizontal length of the diaphragm 3 are also changed accordingly. According to the designed curvature of the bridge, the horizontal curvature of the bridge deck 1, the web 11 and the bottom plate 5 are adjusted to be consistent with the preset curvature of the bridge. Then bolt the connecting plate 14 and the bridge deck 1, weld the parallel rod 2, the connecting plate 14 and the web 11, weld the diaphragm 3 and the web 11, and weld the bottom plate 5 and the web 11 to complete the assembly of a section of steel-concrete composite beam.

[0031] It can be seen that the above-mentioned steel-concrete composite beam is provided with parallel connecting members 2, which are connected to each other through the connecting plates 14 provided on the lower surface of the web 11, thereby enhancing the torsional rigidity of the steel-concrete composite beam.

[0032] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A steel-concrete composite beam, characterized in that: include: a bridge deck along the length of said bridge deck; A web plate is provided on the lower surface of the bridge deck, and the web plate is provided along the length direction of the bridge deck; at least two web plates are provided, and the spacing between adjacent web plates is the same along the width direction of the bridge deck; A bottom plate is provided at the lower part of the web, the bottom plate is provided along the length direction of the bridge deck, and the bottom plate simultaneously connects all the webs; Among them, a connecting plate is provided on the lower surface of the bridge deck, and the connecting plate is connected to the web; adjacent connecting plates are connected by parallel connecting rods; when the width of the bridge deck changes, the spacing between adjacent webs and the width of the bottom plate change accordingly.

2. The steel-concrete composite beam according to claim 1, wherein: Along the width direction of the bridge deck, the bridge deck includes equal thickness sections and thickened sections; the upper surfaces of the equal thickness sections and the thickened sections are flush, the lower surface of the thickened sections is lower than the lower surface of the equal thickness sections, and the equal thickness sections and the thickened sections are staggered.

3. The steel-concrete composite beam according to claim 2, characterized in that: The connecting plate is arranged on the lower surface of the thickened section.

4. The steel-concrete composite beam according to claim 2, wherein: When the width of the bridge deck changes, the width of the thickened section remains unchanged, and the width of the constant thickness section changes accordingly.

5. The steel-concrete composite beam according to claim 1, wherein: The connecting plate is provided with a node plate, and the two ends of the parallel connecting rod are respectively connected to different node plates.

6. The steel-concrete composite beam according to claim 5, characterized in that: Along the width direction of the bridge deck, the node plates are staggered on the connecting plates of adjacent web plates.

7. The steel-concrete composite beam according to claim 1, wherein: A thickened section is provided on the bottom plate along the length direction of the bridge deck.

8. The steel-concrete composite beam according to claim 1, wherein: The bridge deck, the web and the bottom plate have the same curvature in the horizontal direction.

9. The steel-concrete composite beam according to claim 1, wherein: Along the width direction of the bridge deck, The lower surface of the bridge deck is provided with a transverse diaphragm, and the transverse diaphragm is connected between adjacent webs. The transverse partition, the web and the bottom plate together form a box chamber.

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