Probabilistic digital twins for geotechnical design and construction

TL;DR

This paper introduces a Probabilistic Digital Twin framework for geotechnical design that incorporates uncertainties and Bayesian updating to improve decision-making in construction projects.

Contribution

It develops a novel probabilistic digital twin approach tailored for geotechnical engineering, addressing the limitations of deterministic models by integrating multiple uncertainties.

Findings

Enhanced accuracy in geotechnical modeling through uncertainty integration

Improved decision-making demonstrated in a highway foundation project

Framework effectively propagates uncertainties throughout the modeling process

Abstract

The digital twin approach has gained recognition as a promising solution to the challenges faced by the Architecture, Engineering, Construction, Operations, and Management (AECOM) industries. However, its broader application across AECOM sectors remains limited. One significant obstacle is that traditional digital twins rely on deterministic models, which require deterministic input parameters. This limits their accuracy, as they do not account for the substantial uncertainties inherent in AECOM projects. These uncertainties are particularly pronounced in geotechnical design and construction. To address this challenge, we propose a Probabilistic Digital Twin (PDT) framework that extends traditional digital twin methodologies by incorporating uncertainties, and is tailored to the requirements of geotechnical design and construction. The PDT framework provides a structured approach to integrating all sources of uncertainty, including aleatoric, data, model, and prediction uncertainties, and propagates them throughout the entire modeling process. To ensure that site-specific conditions are accurately reflected as additional information is obtained, the PDT leverages Bayesian methods for model updating. The effectiveness of the probabilistic digital twin framework is showcased through an application to a highway foundation construction project, demonstrating its potential to improve decision-making and project outcomes in the face of significant uncertainties.