Bridge Dynamic Displacement Refactoring Based on Ensemble Empirical Mode Decomposition

被引：0
|
作者：
Liu P. [1 ]
Chen Y. [1 ]
Zou Y. [1 ,2 ]
机构：
[1] School of Information Science and Technology, Southwest Jiaotong University, Chengdu
[2] State Key Laboratory of Rail Transit Engineering Information, China Railway First Survey and Design Institute, Xi'an
来源：
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2021年 / 41卷 / 03期
关键词：
Acceleration; Bridge; Dynamic displacement; Ensemble empirical mode decomposition; Vibration;
D O I：
10.16450/j.cnki.issn.1004-6801.2021.03.027
中图分类号：
学科分类号：
摘要：
Aiming at the shortcoming of less precision in transforming measured micro-electro-mechanical-systems(MEMS) accelerometer output signal to elevation signal through the traditional quadratic integration, according to the characteristics of vibration signals of the bridge, a bridge dynamic displacement reconstruction method is proposed based on the combination of ensemble empirical mode decomposition and time domain integration. Through the simulation of the bridge analog signal and the verification of the vibration test bench, the four dynamic displacement refactoring methods of the bridge are analyzed and compared. The proposed method can effectively eliminate the influence of low frequency integral drift and high frequency ambient noise on the integration process. Furthermore, this algorithm has better adaptability and robustness. The effectiveness of the method is verified by field experiments on highway elevated bridges. © 2021, Editorial Department of JVMD. All right reserved.
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页码：606 / 615
页数：9
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