Gravitational force cable-adding windproof system for suspension bridge

By setting up two sets of gravitational cables on the suspension bridge, the resonance and vibration problems that large bridges may occur under cross wind are solved, and the bridge deck is more stable and effective defense of wind resistance is achieved.

CN119507302APending Publication Date: 2025-02-25陈礼亮
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Patent Information

Application Number
CN202411802983.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-02-25

AI Technical Summary

Technical Problem

Large bridges may resonate with cross wind under the action of cross wind, causing bridge vibration and affecting safety.

Method used

A suspension bridge gravitational Gassuline wind protection system is designed. By setting up main bridge columns, upper main arches, lower main arches, upper slings and lower slings on both sides of the bridge deck, two sets of upper and lower gravitational cables are formed to enhance the fixation of the bridge deck and prevent resonance.

Benefits of technology

Effectively prevent bridge resonance and vibration caused by cross wind, enhance bridge deck fixation, reduce the floating of the bridge deck during typhoons, and do not increase the burden of suspension and slings when there is no wind.

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Abstract

The invention relates to a suspension bridge gravity cable-adding windproof system which comprises a bridge floor (1) and main bridge columns (2) arranged on the two sides of the bridge floor (1), an upper main arch (4) is connected between the tops of the main bridge columns (2), a lower main arch (5) is connected between the lower portions of the main bridge columns (2), a plurality of upper slings (6) connected with the bridge floor (1) are arranged on the upper main arch (4) in parallel, and the upper slings (6) are connected with the bridge floor (1). And a plurality of lower slings (7) connected with the bridge floor (1) are arranged on the lower main arch (5) in parallel. Compared with the prior art that only an upper suspension cable system is arranged, the lower suspension cable system is additionally arranged, the bridge floor can be fixed more stably, resonance caused by the fact that crosswind acts on the bridge can be effectively prevented, the suspension cable system is additionally arranged on the lower portion of the bridge, and only one set of lower suspension cable needs to be additionally arranged on the lower portion of the bridge; and the stability is realized by utilizing the gravity and tension of the lower sling.
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Description

Technical Field

[0001] The invention relates to a bridge, in particular to a suspension bridge gravity cable wind protection system. Background Art

[0002] Large bridges may resonate with crosswinds under the influence of crosswinds. The resonance will have a negative impact on the bridge. In severe cases, the bridge will vibrate. In May 2020, the Humen Bridge posed a serious threat to safety due to bridge vibrations caused by crosswinds. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a suspension bridge gravity cable wind protection system, which uses two sets of upper and lower gravity cables to achieve wind protection.

[0004] The technical solution of the present invention is as follows:

[0005] A suspension bridge gravity cable wind protection system, characterized in that it comprises a bridge deck (1), and main bridge columns (2) arranged on both sides of the bridge deck (1), wherein the tops of the main bridge columns (2) are connected with upper main arches (4), the lower parts of the main bridge columns (2) are connected with lower main arches (5), the upper main arches (4) are provided with a plurality of upper suspension cables (6) connected to the bridge deck (1) in parallel, and the lower main arches (5) are provided with a plurality of lower suspension cables (7) connected to the bridge deck (1) in parallel.

[0006] Furthermore, a bridge pier (3) is provided at the bottom of the main bridge column (2).

[0007] Furthermore, the main bridge column (2) and the bridge pier (3) are both reinforced concrete structures.

[0008] Furthermore, the upper main arch (4) and the lower main arch (5) are steel cables.

[0009] Furthermore, the upper sling (6) and the lower sling (7) are metal chains or steel cables.

[0010] By means of the above scheme, the present invention has at least the following advantages:

[0011] Compared with the prior art which has only an upper suspension system, the present invention adds a lower suspension system, which can more stably fix the bridge deck and effectively prevent resonance caused by crosswinds on the bridge. Moreover, to add a suspension system to the lower part of the bridge, it is only necessary to add a set of lower cables to the lower part of the bridge, and stability is achieved by utilizing the gravity and tension of the lower cables.

[0012] The present invention uses a reverse arch type pull attached to the bottom of the bridge deck and the lower suspension cable, which can cooperate with gravity to reduce the fluttering of the bridge deck during a typhoon, and will not increase excessive burdens on the suspension cables and suspension cables when there is no wind.

[0013] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] See also Figure 1 A suspension bridge gravity cable wind protection system according to a preferred embodiment of the present invention comprises a bridge deck 1 and main bridge columns 2 arranged on both sides of the bridge deck 1, wherein an upper main arch 4 is connected between the tops of the main bridge columns 2, and a lower main arch 5 is connected between the lower parts of the main bridge columns 2, a plurality of upper suspension cables 6 connected to the bridge deck 1 are arranged in parallel on the upper main arch 4, and a plurality of lower suspension cables 7 connected to the bridge deck 1 are arranged in parallel on the lower main arch 5.

[0018] - A bridge pier 3 is also provided at the bottom of the main bridge column 2.

[0019] -The main bridge column 2 and the bridge pier 3 are both reinforced concrete structures.

[0020] - The upper main arch 4 and the lower main arch 5 are steel cables.

[0021] - The upper sling 6 and the lower sling 7 are metal chains or steel cables.

[0022] The present invention has at least the following advantages:

[0023] Compared with the prior art which has only an upper suspension system, the present invention adds a lower suspension system, which can more stably fix the bridge deck and effectively prevent resonance caused by crosswinds on the bridge. Moreover, to add a suspension system to the lower part of the bridge, it is only necessary to add a set of lower cables to the lower part of the bridge, and stability is achieved by utilizing the gravity and tension of the lower cables.

[0024] The present invention uses a reverse arch type pull attached to the bottom of the bridge deck and the lower suspension cable, which can cooperate with gravity to reduce the fluttering of the bridge deck during a typhoon, and will not increase excessive burdens on the suspension cables and suspension cables when there is no wind.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A suspension bridge gravity cable wind protection system, characterized by: The invention comprises a bridge deck (1) and main bridge columns (2) arranged on both sides of the bridge deck (1), wherein an upper main arch (4) is connected between the tops of the main bridge columns (2), and a lower main arch (5) is connected between the lower parts of the main bridge columns (2), a plurality of upper suspension cables (6) connected to the bridge deck (1) are arranged in parallel on the upper main arch (4), and a plurality of lower suspension cables (7) connected to the bridge deck (1) are arranged in parallel on the lower main arch (5).

2. A suspension bridge gravity cable wind protection system according to claim 1, characterized in that: A bridge pier (3) is also provided at the bottom of the main bridge column (2).

3. A suspension bridge gravity cable wind protection system according to claim 2, characterized in that: The main bridge column (2) and the bridge pier (3) are both reinforced concrete structures.

4. The suspension bridge gravity cable wind protection system according to claim 1, characterized in that: The upper main arch (4) and the lower main arch (5) are steel cables.

5. The suspension bridge gravity cable wind protection system according to claim 1, characterized in that: The upper sling (6) and the lower sling (7) are metal chains or steel cables.