A bridge structure

Abstract

The present application relates to a kind of bridge structures, the bridge structure includes chord, bearing cable, web member and bridge deck beam;The chord is connected with bearing cable by web member, the chord is connected with bridge deck beam laid on bearing cable by web member.The bearing cable is divided into two groups, and constitutes the arrangement of "person" or "H" shape in plane;The bridge deck beam constitutes two parallel pedestrian passages of "person" or "H" shape, low in the middle, high at both ends;The chord and bearing cable present vertical crossing spatial relationship;The bearing cable is in the form of concave;The chord is in the form of arch.Compared with prior art, when the bridge structure of the present application is applied to bridge, its space structure transmission advantage can be fully played, more light building form, higher economy and structural stability are obtained, while higher traffic capacity is brought, and it is economic, efficient, beautiful and practical.

Description

Technical Field

[0001] This invention relates to the fields of structural engineering and bridge technology, and in particular to a bridge span structure. Background Technology

[0002] Landscape pedestrian bridges differ from ordinary urban pedestrian bridges. In addition to meeting structural requirements, landscape pedestrian bridges also need to consider the corresponding natural geographical conditions, aesthetics that are in harmony with the local landscape style, the rationality of tourist traffic routes, and the portability of materials during construction.

[0003] For pedestrian bridges in scenic areas and parks, the demand is primarily for bridges spanning mountains. For bridges situated in mountainous regions, a single-span design is often chosen to cover the entire mountain, considering economic and construction costs. Furthermore, transportation costs during construction must also be taken into account for bridges built across mountains; therefore, flexible or semi-rigid structures have become the preferred choice, balancing construction difficulty with cost-effectiveness.

[0004] However, traditional forms of bridges such as arch bridges, suspension bridges, and cable-stayed bridges have some technical and formal drawbacks in landscape pedestrian bridges. For example, they all have large bridge towers or arch ribs, requiring large-volume structural construction. Common suspension bridges also suffer from insufficient wind stability, limited bridge deck width, insufficient traffic capacity, and a lack of innovation in architectural form.

[0005] Based on the above technologies, this invention proposes a new bridge span structure design. Applying this bridge span structure to bridges can fully leverage its spatial structural force transmission advantages, resulting in a lighter architectural form, higher economy and structural stability, while also bringing higher traffic capacity, thus achieving an economical, efficient, aesthetically pleasing and practical pedestrian bridge structure system. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art and provide a bridge span structure. The bridge span structure of this patent can be applied to bridges to give full play to its advantages in spatial structural force transmission, thereby obtaining a lighter building form, higher economy and structural stability, and bringing higher traffic capacity, resulting in an economical, efficient, beautiful and practical pedestrian bridge structure system.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] The purpose of this invention is to provide a bridge span structure, which includes chords, load-bearing cables, web members, and a bridge deck beam; the chords are connected to the load-bearing cables by web members, and the chords are connected to the bridge deck beam laid on the load-bearing cables by web members.

[0009] Furthermore, the load-bearing cables are divided into two groups, arranged in a "V" or "H" shape on the plane.

[0010] Furthermore, the chord and the load-bearing cable are arranged in a vertically intersecting spatial relationship, and the chord passes between the two sets of load-bearing cables.

[0011] Furthermore, the load-bearing cable has a concave shape and spans both ends of the bridge.

[0012] Furthermore, the bridge deck beams are laid on the load-bearing cables; the bridge deck beams form two parallel pedestrian passages in a "V" or "H" shape, with a low mid-span and high ends.

[0013] Furthermore, the chord is in the shape of an upward arch, spanning both ends of the bridge.

[0014] Furthermore, the chord can withstand both tension and compression under normal working conditions.

[0015] Furthermore, the load-bearing cable only bears tension under normal working conditions, but may bear tension or become slack in extreme cases.

[0016] Furthermore, the two ends of the chord are supported by foundations at both ends of the bridge span; the load-bearing cables are anchored to foundations at both ends of the bridge span.

[0017] Furthermore, the web member is a V-shaped web member.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) The bridge structure of the present invention makes full use of the spatial cable truss effect, has reasonable stress distribution, light weight, and large span;

[0020] 2) The bridge span structure of the present invention makes full use of the planar layout, thereby improving the lateral stability of the bridge deck;

[0021] 3) The bridge span structure of the present invention significantly improves the vertical stability of the bridge deck by connecting the web members to the chord members and load-bearing cables;

[0022] 4) The bridge structure of the present invention has a clear force transmission structure, which makes full use of the stress characteristics of rigid and flexible components, improves the effectiveness of material use, and saves materials;

[0023] 5) The bridge span structure of the present invention does not require huge bridge towers or arch ribs, and the on-site construction period is short;

[0024] 6) In the bridge span structure of the present invention, the load-bearing cables are hidden under the bridge deck beams, which does not affect traffic;

[0025] 7) The bridge structure of this invention features a dual-channel design that improves traffic capacity and can separate two-way pedestrian flow during peak hours;

[0026] 8) The bridge span structure of the present invention provides a wide field of vision on the bridge, with the main load-bearing structures all arranged in the area along the center line of the bridge. There is no obstruction on the side of the view from above the bridge, and the view is clear. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the bridge structure in an embodiment of the present invention.

[0028] Figure 2 This is a top view of the bridge span structure in an embodiment of the present invention.

[0029] Figure 3 This is a bottom view of the bridge span structure in an embodiment of the present invention.

[0030] Figure 4 This is an exploded view of the bridge span structure in an embodiment of the present invention.

[0031] Figure 5 This is a construction diagram of the bridge span structure in an embodiment of the present invention.

[0032] Figure 6 for Figure 5 AA cross-sectional view.

[0033] Figure 7 for Figure 5 BB cross-section diagram.

[0034] Figure 8 This is a schematic diagram of the mechanical analysis of the bridge span structure in an embodiment of the present invention.

[0035] Figure 9 This is a deformation diagram of the bridge span structure in use according to an embodiment of the present invention.

[0036] The numbers in the diagram are as follows:

[0037] 1. Chord members, 2. Load-bearing cables, 3. Web members, 4. Bridge deck beams. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0039] The present invention will be further described in detail below with reference to specific embodiments.

[0040] Example

[0041] like Figures 1-7 As shown in the figure, this embodiment provides a bridge span structure applied to a pedestrian bridge.

[0042] The pedestrian bridge has a total span of 172m, with one span crossing the mountain. The chord span is 153.5m, and the span of the load-bearing cables and bridge deck is 172m. It adopts the bridge span system of this invention.

[0043] The bridge span structure includes chord 1, load-bearing cables 2, web members 3, and bridge deck beams 4; chord 1, load-bearing cables 2, web members 3, and bridge deck beams 4 are interconnected. Specifically, chord 1 is connected to the load-bearing cables 2 or the bridge deck beams 4 laid on the load-bearing cables 3. The chord 1 is supported at both ends by foundations at both ends of the bridge span; the load-bearing cables 2 are anchored to the foundations at both ends of the bridge span.

[0044] The load-bearing cable 2 is divided into two groups, which are arranged in a "V" or "H" shape on the plane.

[0045] The chord 1 and the load-bearing cable 2 are in a vertically intersecting spatial relationship, and the chord 1 passes between the two sets of load-bearing cables 2.

[0046] Bridge deck beam 4 is laid on load-bearing cable 2; bridge deck beam 4 forms two parallel pedestrian passages in the shape of "human" or "H", with a low mid-span and high ends.

[0047] Under normal working conditions, chord 1 can withstand both tension and compression; load-bearing cable 2 under normal working conditions only withstands tension, but may also withstand tension or become slack in extreme cases.

[0048] String member 1 is in the shape of an upward arch, spanning both ends of the bridge.

[0049] The load-bearing cable 2 has a concave shape and spans both ends of the bridge.

[0050] The V-shaped web members 3 and the load-bearing cables 2 are connected to the bridge deck through cable clamps to form a whole.

[0051] The upper arched chord 1 is a parabola, composed of two parallel circular tubes, while the lower concave load-bearing cable 2 is a catenary.

[0052] The bridge span structure performs well while meeting functional requirements.

[0053] Figure 8 , 9 As shown, Figure 8 This is a schematic diagram showing the load and boundary conditions, the distribution of bending internal forces, and the structural morphology of the bridge. Figure 9 The relevant displacement analysis results show that the maximum structural displacement occurs in the middle of the bridge span, and all structural indicators meet the design safety requirements, resulting in good economic benefits. The beneficial effects of this invention in the embodiments are reflected in the following aspects:

[0054] 1. This pedestrian bridge can cross the mountain in one span, without the need for additional mid-span support structures.

[0055] 2. The structure has a clear force transmission, which makes full use of the stress characteristics of rigid and flexible components, improves the effectiveness of material use, saves materials, and reduces construction and transportation costs.

[0056] 3. This pedestrian bridge is designed with V-shaped web members 3 to ensure the stability of both sides of the pedestrian deck and prevent instability under the influence of wind or crowds.

[0057] 4. The spatial structure of this pedestrian bridge, through the arrangement of chord 1 and web members 3, is well-organized and enhances the aesthetics of the park's landscape bridge.

[0058] 5. The herringbone design on the bridge surface increases the flow of traffic for tourists and enhances the enjoyment of the visit.

[0059] 6. The bridge offers a wide and unobstructed view, with the main load-bearing structures all located along the centerline of the bridge. There are no obstructions on the side of the view from above the bridge, ensuring a clear and unobstructed view.

[0060] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A bridge span structure, characterized in that, The bridge span structure includes chord members (1), load-bearing cables (2), web members (3), and deck girders (4); The chord members (1) are connected to the load-bearing cables (2) by the web members (3), The chord members (1) are connected to the deck girders (4) laid on the load-bearing cables by the web members (3); The load-bearing cables (2) are divided into two groups and arranged in a "human" shape or "H" shape on the plane; The chord members (1) and the load-bearing cables (2) form a vertically crossed spatial relationship, and the chord members (1) pass through between the two groups of load-bearing cables (2); The chord members (1) bear tension or compression under normal working conditions; The load-bearing cables (2) bear tension under normal working conditions; The upward-arching chord members (1) are parabolas, composed of two round tubes arranged side by side, and the downward-sagging load-bearing cables (2) adopt a catenary shape.

2. The bridge span structure according to claim 1, characterized in that, The load-bearing cables (2) are in a downward-sagging form and span both ends of the bridge.

3. A bridge span structure according to claim 1, characterized in that, The deck girders (4) are laid on the load-bearing cables (2); The deck girders (4) form two并列 pedestrian passages in a "human" shape or "H" shape, with the middle low and both ends high.

4. A bridge span structure according to claim 1, characterized in that, The chord members (1) are in an upward-arching form and span both ends of the bridge.

5. A bridge span structure according to claim 1, characterized in that, The web members (3) are V-shaped web members (3).

6. A bridge span structure according to claim 1, characterized in that, Both ends of the chord members (1) are supported on the foundations at both ends of the bridge span; The load-bearing cables (2) are anchored to the foundations at both ends of the bridge span.

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