Bridge deformation reconstruction method

A bridge and bridge measurement technology, applied in measurement devices, instruments, etc., can solve problems such as large errors

Active Publication Date: 2021-03-09
HEFEI UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a bridge deformation reconstruction method, aiming to solve the problem of large errors

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0021] Such as figure 1 As shown, it is a bridge deformation reconstruction method provided by the embodiment of the present invention, and the bridge deformation reconstruction method is:

[0022] Arrange strain and acceleration monitoring points in the longitudinal direction of the measured bridge section of the bridge;

[0023] And measure the acceleration and dynamic strain data of the monitoring point, and reconstruct the bridge deformation displacement ba...

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Abstract

The invention is applicable to the technical field of bridge detection and provides a bridge deformation reconstruction method. The method comprises the following steps of arranging strain and acceleration monitoring points in the longitudinal direction of a measured bridge section of a bridge; measuring acceleration and dynamic strain data of a monitoring point, and respectively reconstructing bridge deformation displacement and us0 based on the acceleration and the dynamic strain; uncalibrated high-frequency and low-frequency displacement pairs being obtained through a filter, and the position of the neutral axis of the bridge structure being obtained through the numerical relationship of the sum by using a data fusion method, so re-superposition being obtained through calibration, and reconstruction displacement u being obtained after calibration. The method has advantages of being accurate in calculation, small in detection error and high in precision, and solving the problem of low-frequency drift.

Description

technical field [0001] The invention belongs to the technical field of bridge detection, in particular to a bridge deformation reconstruction method. Background technique [0002] In the bridge health monitoring, the dynamic deflection of the bridge structure is an important index to evaluate the safety of the bridge. By monitoring the dynamic deflection, the dynamic characteristics of the bridge structure and the impact coefficient of the vehicle load can be obtained, so as to better evaluate the health of the bridge, which is of great significance to ensure the safe operation of the bridge. Traditional bridge deflection measurement methods mainly include theodolites, levels, and dial indicators. However, these measurement methods are only suitable for short-term manual measurement of bridges. [0003] In order to overcome the difficulties encountered in direct measurement, some indirect deflection measurement methods have gradually emerged in recent years, such as GPS met...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32
CPCG01B21/32
Inventor 王佐才段大猷金大帅王振王俊王未寅袁明贵
Owner HEFEI UNIV OF TECH
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