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CSDILA–Arup collaboration to develop ‘PedDesign’

27 April 2021

CSDILA in collaboration with Arup have developed the ‘PedDesign’ tool for Digital Twin to simulate and analyse pedestrian movement with an aim to assist design with the consideration of physical distancing parameters. This tool was developed when CSDILA and Arup explored how Digital Twin technology could be used to inform the design and operation of infrastructure in the context of COVID-19.

The design of the new tram stops and entrances to the University of Melbourne’s Fishermans Bend campus have been selected to test the concept and technology. This tool will help designers and operators of the assets factor public health and disease transmission considerations into their decision making.

Figure 1 PedDesign Scenario Comparison Panel

With the pedestrian location data received from ARUP simulated by its in-house software MassMotion, four scenarios are analysed and presented in the Digital Twin (two different types of platforms with two different locations) using Service Level Analysis and Breach Count Analysis methods. The Service Level Analysis presents the density of pedestrian movement for selected areas and periods, and users can view the level of services through a time-dynamic graphical scene. With the Breach Count Analysis, individual interactions between pedestrians are weighted by physical distance and visualised in colour-coded space. As a supplement to the Breach Count Analysis, the Breach Duration Analysis captures and visualises the trajectories of continuous breaches where pedestrians are paired with each other within a certain distance. The breach durations are also aggregated to units of space to indicate where in the space continuous exposures are more likely to occur. Besides the spatial visualisation, statistics and charts are provided to help users analyse the data from different perspectives, such as temporal trends and correlations.

With the proof of concept having been successfully established, we are planning to integrate our Digital Twin with ARUP’s MassMotion software to process the simulated data in real-time. Although there are unavoidable challenges, we believe that our PedDesign tool will help organisations and individuals test, design, plan, and rethink their buildings and facilities.

Figure 2 PedDesign Analysis and Visualisation

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