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Spatial interpolation method for long-span bridge monitoring data

A technology of monitoring data and spatial interpolation, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as low accuracy and incomplete information

Active Publication Date: 2015-07-15
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0003] In order to overcome the incomplete information and low accuracy of existing long-span bridge monitoring data, the present invention provides a space interpolation method for long-span bridge monitoring data with complete monitoring information and high accuracy

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  • Spatial interpolation method for long-span bridge monitoring data
  • Spatial interpolation method for long-span bridge monitoring data
  • Spatial interpolation method for long-span bridge monitoring data

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings.

[0060] refer to Figure 1 ~ Figure 4 , a method for spatial interpolation of long-span bridge monitoring data, comprising the following steps:

[0061]1) According to the distribution of measuring points of a certain monitoring data on a long-span bridge, the spatial autocorrelation analysis of similar sensors is carried out, which is reflected by the spatial variation function. Under the one-dimensional condition, the variation function is defined as, when the spatial point x is in a When the dimension x-axis changes, half of the variance of the difference between the monitoring value Z(x) and Z(x+h) of bridge monitoring data Z(x) at spatial coordinate points x and x+h is the regionalized variable Z(x ) in the x-axis direction, denoted as γ(h), namely

[0062] γ ( h ...

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Abstract

The invention discloses a spatial interpolation method for long-span bridge monitoring data. The spatial interpolation method comprises the following steps: (1) spatial auto-correlation analysis on sensors of the same kind is performed based on distribution of measurement points of certain monitoring data on the long-span bridge; the spatial auto-correlation analysis is embodied by spatial variation function; (2) search of a reference evaluation point is performed by combination of real monitoring distribution points of the bridge; a four-direction search scheme is carried out by steps of dividing a plane into four quadrants based on an x-coordinate and a y-coordinate of an interpolating point, taking the length of a range a as a searching radius, searching a known sample point, which is nearest to the interpolating point, from each quadrant; (3) the spatial interpolation analysis on the stress-strain monitoring data is performed by combination of the variation function of the real monitoring distribution points of the bridge by adopting a Kriging method so as to obtain the estimated value of an unknown point. The spatial interpolation method for the long-span bridge monitoring data provided by the invention is complete in the monitoring information and relatively high in accuracy.

Description

technical field [0001] The invention relates to the field of long-span bridge monitoring data analysis and processing, in particular to a long-span bridge monitoring data space interpolation method. Background technique [0002] my country's "Measures for the Safety Operation and Management of Highway Long Bridges and Tunnels (Draft for Comment)" proposes that the safety operation management of national highways and provincial highway super-large bridges should implement the work policy of "safety first, prevention first", and recommends that the management and maintenance units adopt modern information technology , Gradually establish a safety monitoring system for the long bridge and tunnel, grasp the overall technical status and operating conditions of the long bridge and tunnel in a timely manner, and provide a basis for the operation management, maintenance and repair, reliability assessment and related scientific research of the long bridge and tunnel. At present, the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 余佩琼杨立陈鹏吴远吕常新赵玉贤
Owner ZHEJIANG UNIV OF TECH
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