A shell arch bridge

Abstract

The present application relates to a kind of shell arch bridges, including shell arch rib (110), main beam (120) and column (130);The shell arch rib (110) includes transverse arch rib and longitudinal arch rib, the transverse arch rib is along the width direction of the main beam (120) and is arranged, the longitudinal arch rib is along the length direction of the main beam (120) and is arranged;The included angle formed by the transverse arch rib and the main beam (120) is greater than the included angle formed by the longitudinal arch rib and the main beam (120);The transverse arch rib and longitudinal arch rib are integrally formed, and the intersection of transverse arch rib and longitudinal arch rib forms arch shell, and the shell arch rib (110) is in the plane of view " ten " cross. Shell arch rib center is additionally provided with an arch transverse support, reduces the transverse span of arch rib, improves the transverse stability of arch rib, improves the stress of arch rib, also provides the roof space for the rest of pedestrian, realizes the unity of force structure and function structure.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, and in particular to a shell arch bridge. Background Technology

[0002] Bridge engineering can be classified into several categories based on its main load-bearing system, including beam bridges, arch bridges, cable-stayed bridges, and suspension bridges. Arch bridges have a clear load-bearing structure and a beautiful shape, making them a widely used bridge type.

[0003] The arch rib is the main load-bearing component of an arch bridge. For arch bridges with a single arch rib, the lateral stability is generally poor due to the lack of lateral support. To ensure sufficient lateral stability, it is usually necessary to increase the lateral dimensions of the arch rib cross-section, resulting in material waste and compromising the overall shape of the arch bridge. The arch rib is the main load-bearing component of an arch bridge, but conventional arch bridge ribs only consider load-bearing requirements, have a single function, and do not serve as a roof.

[0004] Chinese utility model patent CN216765542U discloses a pedestrian arch bridge structure, including a main beam, two arch rib structures, and multiple rain shelters. The two arch rib structures are spaced apart along the width of the main beam and symmetrically arranged on opposite sides of the centerline of the main beam's longitudinal direction. Each arch rib structure includes a first arch rib and a second arch rib extending along the longitudinal direction of the main beam. Both the first and second arch ribs have a first end and a second end facing each other. The first end of the first arch rib and the first end of the second arch rib are fixedly connected to the main beam, and the second end of the first arch rib and the second end of the second arch rib are also fixedly connected to the main beam. Multiple rain shelters are laid on and between the two arch rib structures. This gives the bridge structure rain and sun protection functions, ultimately solving the problem of difficulty in installing rain shelters on current pedestrian arch bridges. However, this application has the problem of encroaching on the bridge deck width at the longitudinal arch foot, requiring an appropriate widening of the bridge. Additionally, guardrails need to be installed where the clearance below the arch ribs is less than 2 meters. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide a shell arch bridge that improves the lateral stability of the arch rib, enhances the stress on the arch rib, and thus reduces the cross-sectional size of the arch rib and saves materials.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A shell arch bridge includes a shell arch rib, a main beam, and columns;

[0008] The column is located below the main beam and is rigidly connected to the main beam.

[0009] The shell arch rib includes a transverse arch rib and a longitudinal arch rib. The transverse arch rib extends along the width direction of the main beam, and the longitudinal arch rib extends along the longitudinal length direction of the main beam. Both ends of the transverse arch rib and the longitudinal arch rib are rigidly connected to the main beam.

[0010] The angle formed between the transverse arch rib and the main beam is greater than the angle formed between the longitudinal arch rib and the main beam;

[0011] The transverse and longitudinal arch ribs are integrally formed, and the intersection of the transverse and longitudinal arch ribs forms an arched shell. The shell arch ribs are cross-shaped in plan view. An additional arched transverse support is added at the center of the arch ribs, reducing the transverse span of the arch ribs and significantly improving their transverse stability. This improves the stress on the arch ribs, allowing for a reduction in the cross-sectional dimensions and saving materials. Besides fulfilling structural requirements, the shell arch ribs also provide a canopy space for pedestrians to rest, achieving a unity between structural and functional components. The overall shell design is simple yet technologically advanced, enhancing the aesthetic appeal of the arch bridge.

[0012] Furthermore, the transverse arch ribs and longitudinal arch ribs are symmetrically arranged on the main beam along the central axis of the main beam's longitudinal direction.

[0013] Furthermore, the shell arch bridge also includes cables. The transverse arch ribs and longitudinal arch ribs form four arch rings. Several upper anchor points are provided on the arch rings, and several lower anchor points are provided on both sides of the main beam. Several cables connect the shell arch ribs and the main beam, and the cables are tensioned to a predetermined tension force to form a cable-stayed arch bridge.

[0014] Furthermore, the cable is made of parallel steel wires or steel strands.

[0015] Furthermore, the shell arch rib is one of a steel structure, a concrete structure, or a steel-concrete composite structure.

[0016] Furthermore, the main beam is one of a steel structure, a concrete structure, or a steel-concrete composite structure.

[0017] Furthermore, the cross-sectional area of ​​the transverse arch rib gradually decreases from the intersection of the transverse arch rib and the longitudinal arch rib toward the connection of the main beam.

[0018] Furthermore, the cross-sectional area of ​​the longitudinal arch rib gradually decreases from the intersection of the transverse arch rib and the longitudinal arch rib towards the connection point of the main beam.

[0019] Furthermore, there are two columns, which are spaced apart along the longitudinal direction of the main beam, and the main beam is supported on the two columns.

[0020] Furthermore, the column is a column structure with a constant cross-section or a variable cross-section.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) An arched transverse support is added at the center of the arch rib of the shell arch bridge, which reduces the transverse span of the arch rib and has a significant effect on improving the transverse stability of the arch rib, improving the stress on the arch rib, and thus reducing the cross-sectional size of the arch rib and saving materials.

[0023] (2) In addition to meeting the load-bearing requirements, the shell arch bridge also provides a canopy space for pedestrians to rest, thus achieving a unity between the load-bearing structure and the functional structure. The overall shell shape is simple yet technologically advanced, enhancing the aesthetic appeal of the arch bridge. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the front view of the shell arch bridge of the present invention;

[0025] Figure 2 This is a top view structural schematic diagram of the shell arch bridge of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the shell arch bridge of the present invention.

[0027] In the diagram: 110, shell arch rib; 120, main beam; 130, column; 140, cable. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] like Figure 1 The illustrated shell arch bridge includes a shell arch rib 110, a main beam 120, and a column 130. The column 130 is located below the main beam 120 and is rigidly connected to the main beam 120.

[0031] Optionally, the main beam 120 may include a steel structure, a concrete structure, or a steel-concrete composite structure.

[0032] The shell arch rib 110 includes a transverse arch rib and a longitudinal arch rib. The transverse arch rib extends along the width direction of the main beam 120, and the longitudinal arch rib extends along the longitudinal length direction of the main beam 120. Both ends of the transverse and longitudinal arch ribs are rigidly connected to the main beam 120. The angle formed between the transverse arch rib and the main beam 120 is greater than the angle formed between the longitudinal arch rib and the main beam 120.

[0033] like Figure 2As shown, the transverse arch rib and the longitudinal arch rib are integrally formed, and the intersection of the transverse arch rib and the longitudinal arch rib forms an arched shell. The shell arch rib 110 is shaped like a cross in plan view. An arched transverse support is added at the center of the arch rib of the shell arch bridge, reducing the transverse span of the arch rib and significantly improving its transverse stability. This improves the stress on the arch rib, thereby reducing the cross-sectional size of the arch rib and saving materials. In addition to its load-bearing requirements, the shell arch rib 110 also provides a canopy space for pedestrian rest, achieving a unity between the load-bearing structure and the functional structure.

[0034] The transverse arch ribs and longitudinal arch ribs are symmetrically arranged on the main beam 120 along the central axis of the longitudinal direction of the main beam 120.

[0035] Optionally, the shell arch rib 110 may include a steel structure, a concrete structure, or a steel-concrete composite structure.

[0036] In this embodiment, the span of the shell arch bridge is more than 50m. The shell arch bridge also includes cables 140. The transverse arch ribs and longitudinal arch ribs form four arch rings. Several upper anchor points are provided on the arch rings. Several lower anchor points are provided on both sides of the main beam 120. The shell arch ribs 110 and the main beam 120 are connected by several cables 140, and the cables 140 are tensioned to a predetermined tension force to form a cable-stayed arch bridge.

[0037] Optionally, the aforementioned cable 140 may be made of parallel steel wire or steel strand.

[0038] like Figure 3 As shown, the cross-sectional area of ​​the transverse arch rib gradually decreases from the intersection of the transverse and longitudinal arch ribs towards the connection point of the main beam 120. Similarly, the cross-sectional area of ​​the longitudinal arch rib gradually decreases from the intersection of the transverse and longitudinal arch ribs towards the connection point of the main beam 120. The overall shell design is simple yet technologically advanced, enhancing the aesthetic appeal of the arch bridge.

[0039] Two columns 130 are provided, and the two columns 130 are spaced apart along the longitudinal direction of the main beam 120. The main beam 120 is supported on the two columns 130.

[0040] Optionally, the column 130 is a column structure with a constant or variable cross-section. The specific cross-sectional form of the column 130 can be reasonably selected according to actual design and usage requirements. The column 130 can be a steel structure, a concrete structure, or a steel-concrete composite structure.

[0041] Example 2

[0042] In this embodiment, the span of the shell arch bridge is less than 50m, and no cable structure is set on both sides of the shell arch bridge. The rest of the structure is the same as in embodiment 1.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0044] It should be noted that in the description of this invention, the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A shell arch bridge, characterized in that, It includes the shell arch rib (110), the main beam (120), and the column (130); The column (130) is located below the main beam (120) and is rigidly connected to the main beam (120); The shell arch rib (110) includes a transverse arch rib and a longitudinal arch rib. The transverse arch rib extends along the width direction of the main beam (120), and the longitudinal arch rib extends along the longitudinal length direction of the main beam (120). Both ends of the transverse arch rib and the longitudinal arch rib are rigidly connected to the main beam (120). The angle formed between the transverse arch rib and the main beam (120) is greater than the angle formed between the longitudinal arch rib and the main beam (120); The transverse arch rib and the longitudinal arch rib are integrally formed, and the intersection of the transverse arch rib and the longitudinal arch rib forms an arched shell. The shell arch rib (110) is in the shape of a cross in the top view.

2. The shell arch bridge according to claim 1, characterized in that, The transverse arch ribs and longitudinal arch ribs are symmetrically arranged on the main beam (120) along the central axis of the main beam (120) in the longitudinal direction.

3. A shell arch bridge according to claim 1, characterized in that, The shell arch bridge also includes cables (140). The transverse arch ribs and longitudinal arch ribs form four arch rings. Several upper anchor points are provided on the arch rings. Several lower anchor points are provided on both sides of the main beam (120). The shell arch ribs (110) and the main beam (120) are connected by several cables (140). The cables (140) are tensioned to a predetermined tension force to form a cable-stayed arch bridge.

4. A shell arch bridge according to claim 3, characterized in that, The cable (140) is made of parallel steel wire or steel strand.

5. A shell arch bridge according to claim 1, characterized in that, The shell arch rib (110) is one of a steel structure, a concrete structure, or a steel-concrete composite structure.

6. A shell arch bridge according to claim 1, characterized in that, The main beam (120) is one of a steel structure, a concrete structure, or a steel-concrete composite structure.

7. A shell arch bridge according to claim 1, characterized in that, The cross-sectional area of ​​the transverse arch rib gradually decreases from the intersection of the transverse arch rib and the longitudinal arch rib toward the connection of the main beam (120).

8. A shell arch bridge according to claim 1, characterized in that, The cross-sectional area of ​​the longitudinal arch rib gradually decreases from the intersection of the transverse arch rib and the longitudinal arch rib toward the connection of the main beam (120).

9. A shell arch bridge according to claim 1, characterized in that, Two columns (130) are provided, and the two columns (130) are spaced apart along the longitudinal direction of the main beam (120). The main beam (120) is supported on the two columns (130).

10. A shell arch bridge according to claim 9, characterized in that, The column (130) is a column structure with a constant or variable cross-section.

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