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Reverse buckling cable reinforced large-span suspension bridge and reasonable bridge forming state determination method

It is a technology of bridge-building state and suspension bridge, which is applied in the direction of suspension bridge, bridge, bridge form, etc. It can solve the problems of wind resistance stability and other problems, and achieve the effect of increasing the structural economic span, improving the stress state, and increasing the vertical stiffness

Pending Publication Date: 2022-04-26
中电建路桥集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the wind resistance stability problem existing in the traditional suspension bridge structure system, to provide a kind of buckle cable reinforced long-span suspension bridge and a method for determining the reasonable bridge state

Method used

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  • Reverse buckling cable reinforced large-span suspension bridge and reasonable bridge forming state determination method
  • Reverse buckling cable reinforced large-span suspension bridge and reasonable bridge forming state determination method

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Experimental program
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Embodiment

[0040]The anti-cable reinforced long-span suspension bridge of this embodiment is as follows: figure 1 , figure 2 As shown, it includes bridge tower 1, main girder 2, main cable 3, suspender 4, buckle cable 5, wind-resistant stay cable 6, anchorage 7 and other components, and the two ends of main cable 3 and buckle cable 5 pass through the anchorage 7 is fixed, and several bearings 8 are arranged symmetrically under both sides of the main beam 2.

[0041] The main cable 3 is 20m in height and 248m in span, using 7 galvanized steel wire ropes with a nominal diameter of 48mm; the buckle cable 5 has a span of 186m, a sag height of 20m in the vertical plane, and 19.28m in the horizontal plane, and is symmetrically arranged with one 48mm galvanized steel wire rope on the left and right , with an inclination angle of 30° to the horizontal. The upper end of the suspender 4 is connected with the main cable 3, and the lower end is connected with the main beam 2, and the arrangement ...

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Abstract

The invention relates to a reverse buckling cable reinforced large-span suspension bridge and a reasonable finished bridge state determination method. The suspension bridge comprises a support, a main beam arranged on the support, bridge towers arranged on the two sides of the main beam, a main cable structure arranged on the main beam and matched with the bridge towers, and a reverse buckling cable structure arranged below the main beam and matched with the main beam. The reasonable bridge forming state determination method comprises the steps that when the reasonable bridge forming state of the suspension bridge is determined, the acting force of the reverse buckling cable structure is equivalent to the vertical acting force applied to the main cable structure, then the whole is divided into the main cable structure and the reverse buckling cable structure to be considered separately, and the main cable structure and the reverse buckling cable structure are combined after respective balance states are found. Compared with the prior art, the transverse rigidity of the whole structure can be improved through the reverse buckling cable structure, it is ensured that the structure can still be in a normal working state under the action of the maximum wind load, the transverse displacement of the main beam under the action of the wind load is obviously reduced, and the vertical rigidity of the structure under the action of the live load is increased.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and relates to a buckle-cable-reinforced large-span suspension bridge and a method for determining a reasonable completed state of the bridge. Background technique [0002] Suspension bridge is a cable load-bearing bridge that is jointly stressed by towers, beams, cables and foundations. It has the characteristics of large spanning capacity, clear force, and good mechanical properties. In recent years, suspension bridges have been more and more widely used in my country. There are a large number of suspension bridges such as Xihoumen Bridge, Runyang Yangtze River Highway Bridge, and Jiangyin Yangtze River Highway Bridge. However, although my country has made great achievements in the construction of suspension bridges, the research on some structural performance needs to be improved. With the continuous increase of the span of the suspension bridge, its torsional stiffness decreases o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/02E01D19/00E01D19/04E01D19/14E01D19/16G06F30/13G06F119/14
CPCE01D11/02E01D19/00E01D19/04E01D19/14E01D19/16G06F30/13G06F2119/14
Inventor 张少强蒋晨晨侯圣均汤维宇
Owner 中电建路桥集团有限公司
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