A bridge deformation reconstruction method

A technique for measuring bridges and bridges, which is applied to measuring devices, instruments, etc., and can solve problems such as large errors

Active Publication Date: 2021-12-31
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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  • A bridge deformation reconstruction method
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Embodiment Construction

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

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

[0021] like figure 1 As shown, it is a bridge deformation and reconstruction method provided by an embodiment of the present invention, and the bridge deformation and 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 and ...

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Abstract

The present invention is applicable to the technical field of bridge detection, and provides a bridge deformation reconstruction method. The bridge deformation reconstruction method comprises: arranging strain and acceleration monitoring points in the longitudinal bridge direction of the measured bridge section of the bridge; Acceleration and dynamic strain data, and reconstruct bridge deformation displacement and u based on acceleration and dynamic strain respectively s0 Obtain the uncalibrated high-frequency and low-frequency displacement pairs through the filter, use the data fusion method to obtain the position of the neutral axis of the bridge structure by using the numerical relationship between and , then calibrate to obtain re-superposition and calibrate to obtain the reconstructed displacement u. The invention has the advantages of accurate calculation, small detection error and high precision, and solves the problem of low frequency drift.

Description

technical field [0001] The invention belongs to the technical field of bridge detection, and in particular relates to a bridge deformation and reconstruction method. Background technique [0002] In bridge health monitoring, the dynamic deflection of bridge structure is an important index to evaluate bridge safety. 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 status of the bridge, which is of great significance to ensure the safe operation of the bridge. The traditional bridge deflection measurement methods mainly include theodolite, level, dial indicator, etc. However, these measurement methods are only suitable for short-term manual measurement of bridges, and have shortcomings such as time-consuming and labor-intensive, inconvenient use, and difficulty in real-time measurement. [0003] In order to overcome the difficulties enco...

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Application Information

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Patent Type & Authority Patents(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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