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Wind-resistant protection device for outdoor super-large-proportion full-bridge aeroelastic model

An aeroelastic model and protection device technology, applied in measuring devices, aerodynamic tests, instruments, etc., can solve the problems of uncontrollable, time-consuming and labor-intensive installation and disassembly of windproof nets and windbreak walls, and large investment, so as to achieve convenient disassembly and assembly, The height is easy to adjust and the effect of low cost

Pending Publication Date: 2020-12-08
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test method for the wind resistance performance of the super-large-scale full-bridge aeroelastic model in the outdoor natural wind field also faces some problems: the outdoor wind speed has strong uncertainty, which cannot be controlled artificially like the wind tunnel laboratory, and the wind speed may appear higher than the full-bridge aeroelastic model. Critical wind speed of bridge aeroelastic model against wind
The installation and disassembly of the first type of windproof net and windbreak wall is time-consuming, laborious, and expensive, and it also involves wind resistance issues, so it is generally not the preferred solution

Method used

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  • Wind-resistant protection device for outdoor super-large-proportion full-bridge aeroelastic model
  • Wind-resistant protection device for outdoor super-large-proportion full-bridge aeroelastic model

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Experimental program
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Effect test

Embodiment

[0017] An outdoor super-large-scale full-bridge aeroelastic model wind-resistant protection device, a temporary fixed support protection device is installed at key positions such as the mid-span, 1 / 4 span, and 3 / 4-span of the super-large-scale full-bridge aeroelastic model to reduce the model. The span greatly improves its wind resistance. Once it is destroyed by the wind, the direct loss may be tens of thousands of yuan, or even greater, and it will affect the progress of the test, and the indirect loss is difficult to estimate. The outdoor full-bridge aeroelastic model does not need additional protective devices when doing wind resistance performance tests. When not doing tests, depending on the wind field conditions, the test may be interrupted for several days or even longer. Generally, it is necessary to add fixed support protection to the model. Therefore, it may be necessary to frequently disassemble and assemble the protective device, and the convenience of disassembly...

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Abstract

The invention provides an outdoor super-large-proportion full-bridge aeroelastic model wind-resistant protection device which comprises a stable bottom plate, a fixed steel pipe, a detachable steel pipe, a pin shaft, a first lead screw, a carrying pole beam, a first nut, a second lead screw and a second nut. Based on the wind-resistant requirement of the bridge model, at different sections of themodel girder, a plurality of temporary fixing supports which are safe, reliable, convenient to disassemble and assemble, adjustable in parameter and low in cost are arranged, so that the span of the model is greatly reduced, the rigidity and wind resistance of the model are greatly improved, and the model is prevented from being damaged by strong wind. In addition, the device can be quickly disassembled and assembled by a single person, the workload is small, and the test progress is basically not influenced.

Description

technical field [0001] The invention relates to a wind resistance protection device for an outdoor super-large-scale full-bridge aeroelastic model, in particular to a large-scale full-bridge aeroelastic model built in an outdoor wind speed where it is difficult to control the wind speed that may exceed its normal wind resistance capacity At this time, it is impossible to carry out wind resistance test research, and it is necessary to take temporary effective measures to greatly improve its wind resistance capacity and prevent it from being damaged by strong winds. Background technique [0002] Wind tunnel test and field measurement are two commonly used research methods for the study of bridge wind resistance performance. These two methods have their own advantages and disadvantages. In view of the shortcomings of the wind tunnel test and field measurement methods in the study of the wind resistance performance of bridges, the applicant proposed a test method for the wind re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/08
CPCG01M9/08
Inventor 许福友马召宇曾华王藐民王旭
Owner DALIAN UNIV OF TECH
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