Development of a Real-time Remote Structural Monitoring Scheme for Civil Infrastructural Systems

Abstract

Long-term structural monitoring has become an important requisite to ensure structural and operational safety for critical civil infrastructures. Long-term structural monitoring by acquiring data continuously or at small intervals may be difficult to achieve by employing conventional on-site monitoring methods. In order to overcome these difficulties remote structural monitoring (RSM), an advanced structural monitoring technique, can be used to acquire continuous data from the remotely instrumented structure. RSM methodology requires an interdisciplinary approach integrating areas such as structural engineering, sensor technology, communication technology, statistical mechanics, information technology for online data transmission (over larger distances) and damage detection/ health assessment of the structure. RSM has many advantages like, continuous monitoring, early alarm of any incipient damage, and data acquisition even in adverse climatic/environmental conditions. This article describes the development of an RSM scheme, developed at SERC, Chennai. The article outlines the laboratory and field investigations carried out to validate the developed scheme. Brief information about the observations and modifications made during these trials are also presented. A part of the work carried out for synthesizing online data using Auto Regressive Moving Average model is also presented.

Interpretation of sensor data from in situ tests on a transversely bonded fibre-reinforced polymer road bridge

“…Sridhar et al [16] show how remote structural monitoring draws on interdisciplinarity between the fields of structural mechanics, sensors, statistics and online data transmission. Strain sensors are of fundamental importance to the monitoring process.…”

“…Farhey later states that while SHM for bridge diagnostics seems to be accepted, it is not yet a typical field practice, 14 owing to the perception of such monitoring as a time, labour, cost and logistically intensive activity. 15 Sridhar et al 16 show how remote structural monitoring draws on interdisciplinarity between the fields of structural mechanics, sensors, statistics and online data transmission. Strain sensors are of fundamental importance to the monitoring process.…”

Frequency‐selective surface‐based chipless passive RFID sensor for detecting damage location

“…However, battery should be embedded to operate it, which hinders its maintenance. Passive wireless sensor is promising for cost‐effective, real‐time sensing network of large structures . An example of passive wireless sensor is radio‐frequency identification (RFID) type passive sensor.…”

Finite Element Model Updating of RC Bridge Structure with Static Load Testing: A Case Study of Vietnamese ThiThac Bridge in Coastal and Marine Environment

“…In another SHM study of a cable-stayed bridge, the SHM of the structure was conducted to track the time-strain history responses of the bridge under dynamic vehicle passes. Other interesting studies on intelligent SHM systems of structures have been implemented as automatic alarms and smartphone-based applications [3][4][5]. The FE model updating of the existing bridge structure based on data sets from the SHM system has been the key important goal of the innovative solution to determine the representative FE model of the actual structural responses, for the estimation of load limits according to design codes and standards, as well as for predicting the current health state of the existing structures.…”