Large-span bridge-floor-free simply-supported tied arch bridge

Abstract

The utility model discloses a large-span bridge-floor-free simply-supported tied arch bridge which comprises bridge piers, a first main arch and a second main arch. The first main arch and the second main arch are arranged on the two sides of the arch bridge. The bridge piers are arranged at the two ends of the first main arch and the two ends of the second main arch and connected with the first main arch and the second main arch through supports. The first main arch and the second main arch are each of a four-steel-pipe truss type structure. A first wind brace and a second wind brace are fixedly arranged between the first main arch and the second main arch, straining beams are arranged on the two sides of the arch bridge in the length direction, and a cross beam is arranged between the straining beams on the two sides of the arch bridge and used for bearing a coal conveying pipe belt machine. And suspenders are respectively arranged between the straining beam and the first main arch and between the straining beam and the second main arch. The steel consumption of the large-span arch bridge is reduced, the four-steel-pipe truss type main arch is adopted, the rise of the main arch is reduced, and the transverse stability of the structure is improved; and the suspender tensioning procedure is simplified, and the construction difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of bridge technology, specifically relating to a long-span simply supported tied arch bridge without a bridge deck. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the field of arch bridge construction and coal conveyor belt load-bearing facilities, traditional arch bridges and load-bearing structures have revealed numerous problems in practical applications. Previously, the main arch structure of arch bridges, due to its large rise, suffered from poor lateral stability. Reducing the rise often resulted in insufficient load-bearing capacity of the main arch. Facing complex geographical environments and climatic conditions, it was less able to resist external interference, posing safety hazards. Furthermore, existing arch bridge construction design specifications are mostly based on highway and railway load models, which are not applicable to special-purpose bridges such as those for large-span coal and oil conveying. On the one hand, special-purpose bridges have large loads; on the other hand, they do not require bridge deck structures. Using existing bridge construction methods for special-purpose bridges results in insufficient load-bearing capacity and wasted steel. Simultaneously, in terms of wind-supported structures, stability and load-bearing capacity are limited, making it difficult to meet the load-bearing requirements of large facilities. The lack of an effective support system between wind supports makes them prone to structural deformation in harsh environments such as strong winds. Traditionally, steel wire or steel strand suspension rods are used, which not only have poor overall structural integrity but also involve cumbersome tensioning procedures, high construction difficulty, and long construction periods, significantly increasing construction costs and the complexity of construction management. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a long-span, deckless, simply supported tied arch bridge, which reduces the amount of steel used in long-span arch bridges. It adopts a four-steel-tube truss main arch, reducing the main arch rise and improving the lateral stability of the structure. It also simplifies the suspension tensioning process and reduces construction difficulty.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] This utility model provides a long-span simply supported tied arch bridge without a bridge deck, comprising: piers and a first main arch and a second main arch disposed on both sides of the arch bridge; the piers are disposed at both ends of the first main arch and the second main arch and are connected to the first main arch and the second main arch through supports; the first main arch and the second main arch are both four steel pipe truss structures.

[0007] A first wind brace and a second wind brace are fixedly installed between the first main arch and the second main arch. Tie beams are installed on both sides of the arch bridge along the length direction. A crossbeam is installed between the tie beams on both sides of the arch bridge to support the coal conveyor belt. Hangers are installed between the tie beams and the first main arch and the second main arch respectively.

[0008] Furthermore, the first main arch is composed of arc-shaped steel pipes and connecting rods. The four arc-shaped steel pipes are a first arc-shaped steel pipe, a second arc-shaped steel pipe, a third arc-shaped steel pipe, and a fourth arc-shaped steel pipe. The first arc-shaped steel pipe is fixedly connected to the second arc-shaped steel pipe and the third arc-shaped steel pipe respectively through connecting rods. The fourth arc-shaped steel pipe is also fixedly connected to the second arc-shaped steel pipe and the third arc-shaped steel pipe respectively through connecting rods, and spliced ​​into a truss structure with a square radial cross section.

[0009] Furthermore, the second main arch is composed of arc-shaped steel pipes and connecting rods. The four arc-shaped steel pipes are the fifth, sixth, seventh, and eighth arc-shaped steel pipes. The fifth arc-shaped steel pipe is fixedly connected to the sixth and seventh arc-shaped steel pipes respectively through connecting rods. The eighth arc-shaped steel pipe is also fixedly connected to the sixth and seventh arc-shaped steel pipes respectively through connecting rods, and spliced ​​together to form a truss structure with a square radial cross-section.

[0010] Furthermore, the arc-shaped steel pipe and the connecting rod are connected by welding.

[0011] Furthermore, a first wind brace is provided between the first arc-shaped steel pipe and the fifth arc-shaped steel pipe; a second wind brace is provided between the second arc-shaped steel pipe and the sixth arc-shaped steel pipe.

[0012] Furthermore, a support rod is provided between the first wind brace and the second wind brace. The support rod includes a vertical rod and an inclined rod. The two ends of the vertical rod are fixedly connected to the first wind brace and the second wind brace, respectively, and the two ends of the inclined rod are also fixedly connected to the first wind brace and the second wind brace, respectively.

[0013] Furthermore, the adjacent diagonal braces are arranged in a figure-eight shape to improve the stability and load-bearing capacity of the first and second wind braces.

[0014] Furthermore, multiple hangers are provided and are evenly arranged between the tie beam and the first main arch, and between the tie beam and the second main arch.

[0015] Furthermore, the total number of the hangers is twice the number of the crossbeams, and the connection position between the hangers and the tie beam is the position where the tie beam and the crossbeam intersect.

[0016] Furthermore, the suspension rod is a steel pipe structure.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are:

[0018] This utility model adopts a four-steel-pipe truss main arch, which reduces the main arch rise and significantly improves the lateral stability of the structure, meeting the stringent requirements of heavy-duty equipment such as coal conveyor belts for bridge structural stability. The first and second main arches are both composed of arc-shaped steel pipes and connecting rods welded together to form a truss structure with a square radial cross section, ensuring the reliability of the structure under complex stress conditions. A first wind brace and a second wind brace are set between the first and second main arches, and support rods are arranged between the wind braces. Adjacent diagonal rods are arranged in a figure-eight shape, which effectively improves the stability and load-bearing capacity of the wind braces and enhances the wind resistance performance of the arch bridge under different working conditions.

[0019] In this invention, multiple hangers are evenly arranged between the tie beam and the main arch, with the number of hangers being twice the number of crossbeams. They are connected at the intersection of the tie beam and the crossbeam, achieving uniform load transfer and optimizing the stress distribution of the structure. The use of steel pipe structure hangers instead of traditional steel wire or steel strand hangers improves the overall integrity of the structure, while eliminating the hanger tensioning process, reducing construction difficulty, shortening the construction period, and saving construction costs. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a side view of the long-span, deckless, simply supported tied arch bridge of this utility model.

[0022] Figure 2 This is a cross-sectional structural diagram of the large-span, deckless, simply supported tied arch bridge of this utility model.

[0023] In the diagram: 1. Pier; 2. First main arch; 3. Second main arch; 4. Hanger; 5. Tie beam; 6. Crossbeam; 7. First wind brace; 8. Second wind brace; 9. First arc-shaped steel pipe; 10. Second arc-shaped steel pipe; 11. Third arc-shaped steel pipe; 12. Fourth arc-shaped steel pipe; 13. Fifth arc-shaped steel pipe; 14. Sixth arc-shaped steel pipe; 15. Seventh arc-shaped steel pipe; 16. Eighth arc-shaped steel pipe. Detailed Implementation

[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise expressly indicated by the present invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] This embodiment discloses a long-span, deckless, simply supported tied arch bridge, which is a deckless tie beam and crossbeam lattice main beam system, saving engineering materials and reducing project costs. Figures 1-2 As shown, it includes: pier 1 and a first main arch 2 and a second main arch 3 set on both sides of the arch bridge; the pier 1 is set at both ends of the first main arch 2 and the second main arch 3 and is connected to the first main arch 2 and the second main arch 3 through supports; the first main arch 2 and the second main arch 3 are both four steel pipe truss structures; the use of four steel pipe truss main arches reduces the main arch rise and improves the lateral stability of the structure.

[0027] A first wind brace 7 and a second wind brace 8 are fixedly installed between the first main arch 2 and the second main arch 3 to enhance the lateral connection between the main arches and effectively resist wind load and seismic force. Tie beams 5 are provided on both sides of the arch bridge along the length direction. A crossbeam 6 is provided between the tie beams 5 on both sides of the arch bridge to support the coal conveyor belt. Hangers 4 are provided between the tie beams 5 and the first main arch 2 and the second main arch 3 respectively.

[0028] Furthermore, the first main arch 2 is composed of arc-shaped steel pipes and connecting rods. The four arc-shaped steel pipes are a first arc-shaped steel pipe 9, a second arc-shaped steel pipe 10, a third arc-shaped steel pipe 11, and a fourth arc-shaped steel pipe 12. The first arc-shaped steel pipe 9 is fixedly connected to the second arc-shaped steel pipe 10 and the third arc-shaped steel pipe 11 respectively through connecting rods. The fourth arc-shaped steel pipe 12 is also fixedly connected to the second arc-shaped steel pipe 10 and the third arc-shaped steel pipe 11 respectively through connecting rods, and spliced ​​into a truss structure with a square radial cross section.

[0029] Furthermore, the second main arch 3 is composed of arc-shaped steel pipes and connecting rods. The four arc-shaped steel pipes are the fifth arc-shaped steel pipe 13, the sixth arc-shaped steel pipe 14, the seventh arc-shaped steel pipe 15, and the eighth arc-shaped steel pipe 16. The fifth arc-shaped steel pipe 13 is fixedly connected to the sixth arc-shaped steel pipe 14 and the seventh arc-shaped steel pipe 15 respectively through connecting rods. The eighth arc-shaped steel pipe 16 is also fixedly connected to the sixth arc-shaped steel pipe 14 and the seventh arc-shaped steel pipe 15 respectively through connecting rods, and spliced ​​into a truss structure with a square radial cross section.

[0030] Furthermore, the arc-shaped steel pipe and the connecting rod are connected by welding.

[0031] Furthermore, a first wind brace 7 is provided between the first arc-shaped steel pipe 9 and the fifth arc-shaped steel pipe 13; a second wind brace 8 is provided between the second arc-shaped steel pipe 10 and the sixth arc-shaped steel pipe 14.

[0032] Furthermore, a support rod is provided between the first wind support 7 and the second wind support 8. The support rod includes a vertical rod and an inclined rod. The two ends of the vertical rod are fixedly connected to the first wind support 7 and the second wind support 8, respectively, and the two ends of the inclined rod are also fixedly connected to the first wind support 7 and the second wind support 8, respectively.

[0033] Furthermore, the adjacent diagonal braces are arranged in a figure-eight shape to improve the stability and load-bearing capacity of the first wind brace 7 and the second wind brace 8. The adjacent diagonal braces utilize the stability principle of triangles to effectively disperse and transfer the load borne by the wind braces, thereby significantly improving the wind resistance and overall stability of the structure.

[0034] Furthermore, multiple hangers 4 are provided and are evenly arranged between the tie beam 5 and the first main arch 2, as well as between the tie beam 5 and the second main arch 3.

[0035] Furthermore, the total number of the hangers 4 is twice the number of the crossbeams 6, and the connection position between the hangers 4 and the tie beam 5 is the intersection of the tie beam 5 and the crossbeam 6; this achieves uniform load transfer and optimizes the stress distribution of the structure.

[0036] Furthermore, the suspension rod 4 is a steel pipe structure. The use of a steel pipe structure instead of the traditional steel wire or steel strand suspension rod 4 improves the overall integrity of the structure, eliminates the tensioning process of the suspension rod 4, and facilitates construction.

[0037] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A long-span, deckless, simply supported tied arch bridge, characterized in that, include: The bridge piers and the first and second main arches are arranged on both sides of the arch bridge; the bridge piers are arranged at both ends of the first and second main arches and are connected to the first and second main arches by supports. Both the first and second main arches are four-steel-pipe truss structures. A first wind brace and a second wind brace are fixedly installed between the first main arch and the second main arch. Tie beams are installed on both sides of the arch bridge along the length direction. A crossbeam is installed between the tie beams on both sides of the arch bridge to support the coal conveyor belt. Hangers are installed between the tie beams and the first main arch and the second main arch respectively.

2. A long-span, deckless, simply supported tied arch bridge as described in claim 1, characterized in that, The first main arch is composed of arc-shaped steel pipes and connecting rods. The four arc-shaped steel pipes are a first arc-shaped steel pipe, a second arc-shaped steel pipe, a third arc-shaped steel pipe, and a fourth arc-shaped steel pipe. The first arc-shaped steel pipe is fixedly connected to the second arc-shaped steel pipe and the third arc-shaped steel pipe through connecting rods. The fourth arc-shaped steel pipe is also fixedly connected to the second arc-shaped steel pipe and the third arc-shaped steel pipe through connecting rods. They are spliced ​​together to form a truss structure with a square radial cross section.

3. A long-span, deckless, simply supported tied arch bridge as described in claim 2, characterized in that, The second main arch is composed of arc-shaped steel pipes and connecting rods. The four arc-shaped steel pipes are the fifth, sixth, seventh, and eighth arc-shaped steel pipes. The fifth arc-shaped steel pipe is fixedly connected to the sixth and seventh arc-shaped steel pipes through connecting rods. The eighth arc-shaped steel pipe is also fixedly connected to the sixth and seventh arc-shaped steel pipes through connecting rods, forming a truss structure with a square radial cross-section.

4. A long-span, deckless, simply supported tied arch bridge as described in claim 3, characterized in that, The arc-shaped steel pipe and the connecting rod are connected by welding.

5. A long-span, deckless, simply supported tied arch bridge as described in claim 3, characterized in that, A first wind brace is provided between the first arc-shaped steel pipe and the fifth arc-shaped steel pipe; a second wind brace is provided between the second arc-shaped steel pipe and the sixth arc-shaped steel pipe.

6. A long-span simply supported tied arch bridge without a bridge deck as described in claim 5, characterized in that, A support rod is provided between the first wind brace and the second wind brace. The support rod includes a vertical rod and an inclined rod. The two ends of the vertical rod are fixedly connected to the first wind brace and the second wind brace, respectively. The two ends of the inclined rod are also fixedly connected to the first wind brace and the second wind brace, respectively.

7. A long-span, deckless, simply supported tied arch bridge as described in claim 6, characterized in that, The adjacent diagonal braces are arranged in a V-shape to improve the stability and load-bearing capacity of the first and second wind braces.

8. A long-span simply supported tied arch bridge without a bridge deck as described in claim 1, characterized in that, Multiple hangers are provided and are evenly distributed between the tie beam and the first main arch, and between the tie beam and the second main arch.

9. A long-span simply supported tied arch bridge without a bridge deck as described in claim 1, characterized in that, The total number of the hangers is twice the number of the crossbeams, and the connection position between the hangers and the tie beam is the position where the tie beam and the crossbeam intersect.

10. A long-span simply supported tied arch bridge without a bridge deck as described in claim 1, characterized in that, The suspension rod is a steel pipe structure.

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