Long-term Bridge Deflection Monitoring Using a Connected Pipe System Considering Structural Vibration

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Zeng, Pan^1 ; Wang, Ronghui^1

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong

510641, China^1

关键词: Bridge health monitoring;    Bridge maintenance;    Deflection monitoring;    Long-term deflections;    Structural degradation;    Structural vibrations;    Technical solutions;    Theoretical formulation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/2/022007/pdf
DOI  :  10.1088/1755-1315/189/2/022007

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Structural health monitoring is an important technical solution to track the evolution of bridge performance and prevent sudden damage, which receives rapid development in the past decades. While, long-term deflection is a critical index to evaluate bridge state and provide references for bridge maintenance and management. Hence, health monitoring of bridge long-term deflection is studied in the paper using a connected pipe system. First, bridge deflection monitoring system using a connected pipe is designed. Then, theoretical formulation of bridge deflection considering bridge vibration is deduced. Finally, the deflection monitoring system is verified through a model test. Results indicate the proposed bridge deflection monitoring using a connected pipe system could precisely measure the long-term static deflection induced by structural degradation as well as transient dynamic deflection caused by environment loads, and the relative error between theoretical formulation and realistic measurements is no more than 2.3%. The long-term bridge deflection monitoring using a connected pipe system studied in the paper could find wide application in bridge health monitoring.