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Alnaggar, A M M M (2022) Digital transformation in asset management organisations: towards a data driven approach for life cycle asset management, Unpublished PhD Thesis, , University College London (University of London).
Antonopoulou, S (1987) The building industry in Greece: its role in the post-war Greek economy, Unpublished PhD Thesis, , University College London (University of London).
Baik, A H (2017) Heritage Building Information Modelling (HBIM) as a model of UNESCO's World Heritage Nomination File, Unpublished PhD Thesis, , University College London (University of London).
Baltazar dos Santos, A P (2009) Cyberarchitecture: the virtualisation of architecture beyond representation towards interactivity, Unpublished PhD Thesis, , University College London (University of London).
Beech, N (2012) Constructing everyday life: an architectural history of the South Bank in production, 1948-1951, Unpublished PhD Thesis, , University College London (University of London).
Behar, C B (2016) A socio-technical perspective of ventilation practices in UK social housing with whole house ventilation systems: design, everyday life and change, Unpublished PhD Thesis, , University College London (University of London).
Bouwer, K A (2016) Building disappointment: the limits and potential of tort liability for energy efficiency problems in domestic buildings, Unpublished PhD Thesis, , University College London (University of London).
Boyes, G (2021) Towards BIM/GIS interoperability: a theoretical framework and practical generation of spaces to support infrastructure Asset Management, Unpublished PhD Thesis, , University College London (University of London).
Burman, E (2016) Assessing the operational performance of educational buildings against design expectations: a case study approach, Unpublished PhD Thesis, , University College London (University of London).
Fang, Z (2022) Machine learning integrated portfolio-based strategic building asset management, Unpublished PhD Thesis, , University College London (University of London).
Few, J F M (2021) Ventilation in occupied homes: measurement, performance and sociotechnical perspectives, Unpublished PhD Thesis, , University College London (University of London).
Hesse, A D (1991) The management of risks in the procurement of very large construction projects (Britain and New Commonwealth): Comparative change in procurement methods for very large construction projects, Unpublished PhD Thesis, , University College London (University of London).
Howard, R W (2021) Of incentive, bias, and behaviour: an empirical economic investigation into project delivery constructs influencing the adoption of building information modelling, Unpublished PhD Thesis, , University College London (University of London).
Husain, T (2023) Foreign investment and infrastructure financing: railways during the first age of globalisation, Unpublished PhD Thesis, , University College London (University of London).
Kadir Pakir, A H (2003) Integration: A study in the context of low cost housing projects in Malaysia with special reference to the state of penang, Unpublished PhD Thesis, , University College London (University of London).
Kurul, E (2003) Re-using listed buildings through conversion: A process mapping approach, Unpublished PhD Thesis, , University College London (University of London).
Murray, A (2018) Returns on public capital investment: Procurement, whole life cost and value in English schools and hospitals, from 1997-2012, Unpublished PhD Thesis, , University College London (University of London).
Naghshbandi, S N (2022) Technology capabilities for safe and resilient coordination of automated earthwork systems: a decentralized multi-agent system approach, Unpublished PhD Thesis, , University College London (University of London).
- Type: Thesis
- Keywords: coordination; flexibility; equipment; earthmoving; earthworks; excavation; manufacturing; safety; agent-based modelling; productivity; simulation; systematic literature review; innovation
- ISBN/ISSN:
- URL: https://discovery.ucl.ac.uk/id/eprint/10152587/
- Abstract:
A systematic examination and evaluation of operational system safety is required for automated earthwork systems due to its distinguishing characteristics compared to other automated industrial systems like the manufacturing and mining industries. Earthwork systems operate in an unpredictable and uncontrolled environment. Accordingly, complete safety cannot be assured, yet we can progress toward it using digitisation and object detection technologies, and efficient coordination strategies. As such, the problem is: How do we enhance the future system safety of complex automated earthmoving operational systems that a digitised construction industry relies on? This thesis centres on operational systems' safety, and consequently the impact of technology innovations on emerging safety risks from the interaction between automated earthmoving equipment units and operational environments were studied. A systematic literature review was conducted to identify the existing technology innovations and their capabilities in enhancing earthworks' system safety. Then a hybrid distributed multi-agent system was developed to analyse an earthwork's system safety continuously via simulating the interaction of automated earthmoving equipment units with the environment during their operation. The developed hybrid model integrates Agent-Based Modelling and Discrete Event Simulation methods. The model developed for this thesis evaluates an earthwork's system safety through assessing both its safety, and productivity concurrently. The developed hybrid model contributes to better safety management and planning of complex earthwork systems in a digitized construction industry, as well as further development of earthwork operation agent-based modelling paradigm as it is a tool to support safe behaviour generation for agents such as automated earthmoving equipment through: 1- Evaluating and analysing both the system's safety and productivity concurrently, based on the estimated state of earthmoving operations; and quantifying them. 2- Evaluating the efficiency of plans and actions. In fact, it facilitates defining better safety enhancement strategies by tracing the states and attributes of agents, situations, events, and interactions to acquire the required information and knowledge to control automated environment and associated agents' actions and plans their future behaviour. 3- Testing the effect of individual agent's actions (e.g. path planning) on fleet-level coordination of the earthwork system. In other words, this thesis contributed to the body of knowledge by establishing a distributed multi-agent framework for enhancing an earthwork system's safety without compromising its productivity through applying agent-based modelling which has not been sufficiently utilised in this area of science. A key strength of the hybrid model is its scalability and flexibility. This can be used to accommodate a wide range of excavation site requirements, including different layouts and parameters. This study shows although historical data analysis can define safety barriers, this cannot be completely responsive to uncertainties related to a complex system. Highly automated systems (autonomous systems) require real-time reactive capability to deal with dynamic and uncertain interactions within the operational system. In other words, automated earthwork systems require a high degree of adaptability to ensure safety. Higher adaptability can be achieved through integrating 1- accurate object detection technologies, 2- appropriate coordination strategies, and 3- operational environment modifications. Even though this study is able to test a wide range of scenarios, it does not guarantee a safe, resilient performance under all possible circumstances that could arise from equipment-environment interactions. However, simulation of scenarios clarifies the consequences of the defined actions for different operational states and shows how automated earthwork systems are safe and productive.
Pocobelli, D P (2021) Heritage building information model (BIM) for scientific data, Unpublished PhD Thesis, , University College London (University of London).
Presland, A J (2023) Picturing construction, constructing identities: the photographic archive of John Laing & Son Ltd, Unpublished PhD Thesis, , University College London (University of London).
Sanei, H (2016) Discipline breakdown structure: Bridging project management and systems engineering to form an integrated management system in multidisciplinary rail projects, Unpublished PhD Thesis, , University College London (University of London).
Sassano, G (2022) Optimism bias and cost overruns: experimenting on the internal and external views in resources and time estimation, Unpublished PhD Thesis, , University College London (University of London).
Song, Y (2022) Resilience bonds and the financing of resilient infrastructure, Unpublished PhD Thesis, , University College London (University of London).
Sugiyantoro (2021) Homebuyers' strategies for progressive residential infrastructure improvement in Bandung, Indonesia, Unpublished PhD Thesis, , University College London (University of London).
Symons, A W (2021) Integrated design, design management and the delivery of major hospitals, Unpublished PhD Thesis, , University College London (University of London).
Udomdech, P (2021) Project-based innovation learning mechanisms in the built environment, Unpublished PhD Thesis, , University College London (University of London).
Vinci, F (2022) Project-based networks in the delivery of infrastructure projects and programmes, Unpublished PhD Thesis, , University College London (University of London).
Wang, Y (2022) Monitoring, modelling and analysis of occupants' operation of windows, use of air purifiers and smart air quality control in low-energy residential buildings, Unpublished PhD Thesis, , University College London (University of London).