Structural Health Monitoring

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Monitoring Bridge Structure

EngAnalysis collaborated with research organisations in the design and carried out all works in procuring, developing and deploying a sensor array of 64 channels of strain and acceleration reviewing the requirements for weigh in motion studies and structural health monitoring on small bridges. This system has been collecting high speed data continuously for since 2015.

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Tunnel Monitoring during adjacent construction

EngAnalysis was engaged to evaluate methodologies to monitor the structural integrity of a historically significant civil structure underground in Sydney during a construction project.

This project involved developing real time on-line tools for data visualisation including heat maps, long term trends, tidal data and alarm states. 

There were many technical challenges in this project including devising systems to work safely in a confined space subject to inundation, design of components and brackets to comply to the stringent historical preservation requirements, as well as this the structure was below the high tide line and flooded twice per day.

Principal to the project success was the immediate on-line communication of the structures current health. The deployed system uses bespoke software and cloud based processing to provides the site with real-time, analyzed data on the geometry and health of the structure.

Monitoring Loads on Props

EngAnalysis was engaged to design, deploy, and operate a retro-fitted load monitoring system for several struts over an excavation site used to manage the risk of wall collapse. The timeframe from the beginning of concept design to deployment was less than 4 weeks.

The deployed system monitors the axial load in the struts by using an array of strain gauges, with an instrumentation cabinet for logging hardware and communication. The raw data is uploaded to EngAnalysis cloud servers for processing and analysis, before being sent directly to integrate into the site’s data management system.

The system has provided significant insight into changes in loading to the struts due to the excavation as well as the effects of seasonal and daily ambient temperature and radiant heat fluctuations. To take the system further, a predictive tool which accounts for seasonal temperature variance and time dependant excavation rates was developed to forecast peak loads during summer, allowing site management to plan and make informed decisions.