Deployment of a Smart Structural Health Monitoring System for Long-Span Arch Bridges: A Review and a Case Study

Abstract

Structural health monitoring (SHM) technology for surveillance and evaluation of existing and newly built long-span bridges has been widely developed, and the significance of the technique has been recognized by many administrative authorities. The paper reviews the recent progress of the SHM technology that has been applied to long-span bridges. The deployment of a SHM system is introduced. Subsequently, the data analysis and condition assessment including techniques on modal identification, methods on signal processing, and damage identification were reviewed and summarized. A case study about a SHM system of a long-span arch bridge (the Jiubao bridge in China) was systematically incorporated in each part to advance our understanding of deployment and investigation of a SHM system for long-span arch bridges. The applications of SHM systems of long-span arch bridge were also introduced. From the illustrations, the challenges and future trends for development a SHM system were concluded.

Characterisation of the damaging micromechanisms in a pearlitic ductile cast iron and damage assessment by acoustic emission testing

“…Several studies provide approaches/methods to analyse the AE data for the damage assessment of structures . AE testing has been increasingly applied in automated monitoring processes, especially for infrastructural systems . A schematic application of the technique is shown in Figure A (by Mistras LTD).…”

“…[17][18][19][20][21] AE testing has been increasingly applied in automated monitoring processes, especially for infrastructural systems. 13,[22][23][24] A schematic application of the technique is shown in Figure 2A (by Mistras LTD). The evolution of the main features of the AEs (namely, AE features, Figure 2B) is potentially correlated to the damage, even though a more refined analysis typically allows a more robust assessment.…”

Performance Improvement of Dual-Pulse Heterodyne Distributed Acoustic Sensor for Sound Detection

“…Since DAS can obtain the dynamic acoustic field along the sensing fiber with length of several kilometers, it is ideal for applications like structural health monitoring [7,8], intrusion detection [9], leak detection [10], geological sensing [11,12], and oilfield exploration [13]. Especially when applied in the oilfield, with harsh environment of high temperature and pressure, one can adopt the pre-installed optical fiber or optimize the optical fiber to meet special requirements.…”

Design and Implementation of a Structural Health Monitoring System for a Large Sea‐Crossing Project with Bridges and Tunnel

“…A structural health monitoring (SHM) system can comprehensively monitor the stress situation and damage evolution law of bridge and tunnel structures during the entire process of construction and service. Moreover, it can effectively ensure the construction and service safety of large-span structures [5].…”