Bridge moving vehicle load identifying method based on Kaczmarz algebraic iterative reconstruction method

A vehicle load and iterative reconstruction technology, applied in character and pattern recognition, instruments, computer components, etc., can solve problems such as difficult measurement data and errors in mobile load measurement

Active Publication Date: 2015-05-06
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

The data of the total vehicle weight and the axle load of each axle is a concern of the transportation departments of many countries in the world, because the total vehicle weight and the axle load of each axle are important reference data for bridge planning and design, maintenance management and safety and health monitoring, b

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  • Bridge moving vehicle load identifying method based on Kaczmarz algebraic iterative reconstruction method
  • Bridge moving vehicle load identifying method based on Kaczmarz algebraic iterative reconstruction method
  • Bridge moving vehicle load identifying method based on Kaczmarz algebraic iterative reconstruction method

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[0046] The technical solution of the present invention is described in detail below by way of the examples, but the examples are only preferred implementation modes of the present invention, and it should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, , several improvements and equivalent replacements can also be made, and these technical solutions after the improvements and equivalent replacements to the claims of the present invention all fall within the protection scope of the present invention.

[0047] The invention is based on a simplified physical model of the bridge structure, and uses a Kaczmarz algebraic iterative reconstruction method to identify the moving vehicle load on the bridge deck by using the actually measured bridge acceleration response. like figure 1 As shown, the method specifically includes the following steps:

[0048] (1) Arrange photoelectric sensors and accelerometers a...

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Abstract

The invention discloses a bridge moving vehicle load identifying method based on a Kaczmarz algebraic iterative reconstruction method. The bridge moving vehicle load identifying method includes steps of uniformly arranging photoelectric sensors and accelerometers in bridge preset measuring points; (2) building a simple physical mechanics model of a bridge; solving qn(t) in a time domain by convolution integral to obtain system equation like Af=b, wherein A is a given system matrix, b is a given bridge deck response, and f is a solved moving vehicle load; (4) identifying the bridge deck moving vehicle load f by selecting proper iterative times k, namely the bridge acceleration response by the Kaczmarz algebraic iterative reconstruction method. The Kaczmarz algebraic iterative reconstruction method only needs simple iteration to identify moving load, the iterative formula does not contain other auxiliary vectors except linear equation set, and the bridge moving vehicle load identifying method is convenient to input, clear in theory, easy to popularize and very applicable to identify the moving load.

Description

technical field [0001] The invention relates to the technical field of bridge deck moving load identification, in particular to a dynamic identification method for bridge deck moving vehicle loads based on a Kaczmarz algebraic iterative reconstruction method. Background technique [0002] Bridges are an important part of the field of structural engineering and are of great significance to the development of a country and region. Vehicles moving on the bridge affect the service life of the road and bridge, and even restrict the economic development of a region or country. The data of the total vehicle weight and the axle load of each axle is a concern of the transportation departments of many countries in the world, because the total vehicle weight and the axle load of each axle are important reference data for bridge planning and design, maintenance management and safety and health monitoring, but the actual measurement of these Data is difficult. Traditional measurement m...

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Application Information

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IPC IPC(8): G06K9/62
CPCG06F18/217
Inventor 陈震
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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