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Arch bridge vortex vibration control building membrane structure for arch bridge

A technology for architectural membranes and arch bridges, applied in arch bridges, buildings, bridge construction, etc., can solve the problem of being unable to effectively control the vortex-induced resonance of solid arch ribs, and achieve the effect of reducing the amplitude of vortex vibration

Inactive Publication Date: 2009-06-24
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an improved arch bridge vortex vibration control architectural membrane structure for arch bridges, which can overcome the problem of the prior art that cannot effectively control the vortex induced resonance of solid arch ribs of under-supported or intermediate-supported arch bridges some deficiencies

Method used

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  • Arch bridge vortex vibration control building membrane structure for arch bridge
  • Arch bridge vortex vibration control building membrane structure for arch bridge
  • Arch bridge vortex vibration control building membrane structure for arch bridge

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] The present invention mainly includes arch ribs 1 and cross braces 2 arranged between the arch ribs. The difference between it and the prior art is that: the top of the cross-section of the rib arch is provided with a building membrane structure, and the building membrane structure consists of a membrane support frame 3 and a The membrane system on the membrane support frame can effectively control the vortex vibration of the arch rib. The numerical simulation results of fluid dynamics show that the amplitude of vortex vibration can be reduced by 61%. The vortex induced forces cancel each other out due to the opposite rotation directions and different phase differences. Taking Shanghai Lupu Bridge as an example, the wind tunnel test results of the aeroelastic model of the whole bridge show that the eddy vibration amplitude of the full bridge can...

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Abstract

The present invention relates to an arch bridge vortex vibration control building film structure for arch bridge. It is characterized by that the top portion of cross-section of its arch rib is equipped with a building film structure, said building film structure is formed from film supporting frame and film system set on the film supporting frame, and can be used for effectively controlling arch rib vortex vibration.

Description

Technical field: [0001] The invention relates to the fields of bridge engineering and disaster prevention engineering, in particular to an arch bridge vortex vibration control building membrane structure installed on a bottom-supported or intermediate-supported arch bridge. Background technique: [0002] At present, truss arch ribs with high ventilation rate are mostly used in large-span under-pass or mid-pass arch bridges at home and abroad, while solid arch ribs have the advantages of convenient construction, reliable structure, and strong durability. However, solid arch ribs generally have the problem of vortex-induced vibration, and certain measures must be taken to control the vortex vibration of the arch rib, and the existing technology cannot effectively control the vortex vibration. Invention content: [0003] The purpose of the present invention is to provide an improved arch bridge vortex vibration control architectural membrane structure for arch bridges, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D4/00E01D19/00E01D6/00
Inventor 葛耀君曹丰产周志勇项海帆葛世汉
Owner TONGJI UNIV
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