Abstracts – Browse Results
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Arkani, S (1999) Contractual interfaces: the implications of building production process management and interorganisational relations for productivity in building project coalitions, Unpublished PhD Thesis, Business School, University of Greenwich.
Carbonari, G (2018) Sustainable facilities management with the support of building information modelling, Unpublished PhD Thesis, Department of Built Environment, University of Greenwich.
Connaughton, J N (1993) Making and implementing industrial building investment decisions, Unpublished PhD Thesis, , University of Greenwich.
Cooper, J (2015) Sustainable building maintenance within social housing, Unpublished PhD Thesis, , University of Greenwich.
Herrero, J J (2003) Columbus: a solution using metadata for integrating document management, project hosting and document control in the construction industry, Unpublished PhD Thesis, School of Computing & Mathematical Sciences, University of Greenwich.
Jiang, H (2012) The development of a scenario independent method for evaluating the evacuation complexity of a building, Unpublished PhD Thesis, , University of Greenwich.
Keath, M (1983) The development of school construction systems in Hertfordshire 1946-64, Unpublished PhD Thesis, , University of Greenwich.
Khan, L R (2014) Reliability estimation and risk-cost optimisation of underground pipelines, Unpublished PhD Thesis, , University of Greenwich.
- Type: Thesis
- Keywords: corrosion; liability; pipeline; reliability; civil engineering; estimating; rehabilitation; safety; service life; civil engineer; failure; Monte Carlo simulation; simulation; UK
- ISBN/ISSN:
- URL: http://gala.gre.ac.uk/id/eprint/12597/
- Abstract:
The safety of infrastructure facilities is the primary objective of any civil engineering design. A large section of underground pipelines in the UK are classified as structurally deficient and functionally obsolete. Due to low visibility, condition assessment and rehabilitation of underground pipelines are frequently neglected until a catastrophic failure occurs. Providing an acceptable level of service and overcoming the practical difficulties, the concerned industry has to plan how to operate, maintain and renew (repair or replace) the pipeline systems under the budget constraints. This research is focused on estimating pipe reliability and deciding when and how interventions are needed to prevent unexpected failures of flexible underground metal pipelines subject to externally applied loadings and pipe material corrosion during the whole service life at the optimal cost. The time-dependent reliability due to corrosion induced excessive deflection, buckling, wall thrust and bending has been estimated. First, Hassofer-Lind and Rackwitz-Fiessler (HL-RF) algorithm and Monte Carlo Simulation (MCS) have been used to estimate the reliability. Then Subset Simulation (SS) method is developed to enhance the applicability, especially for small failure probability prediction. Accuracy prediction method, Receiver Operating Characteristic (ROC) curve has been introduced in this research to assess the accuracy of pipeline reliability analysis. Then the study has been extended to determine the intervention year for maintenance and identify the most appropriate renewal solution by optimising the risk of failure and life cycle cost, including carbon dioxide emissions mitigation cost, using Genetic Algorithm (GA). Optimisation technique, SS has also been developed for risk-cost optimisation of underground pipelines. Examples are presented to validate the proposed methods with a view to prevent unexpected failure of pipes by prioritising maintenance based on failure severity and system reliability. The proposed reliability estimation and risk-cost optimisation approach can be utilised to form a maintenance strategy and to avoid unexpected failure of pipeline networks during service life.
Siddiqui, A A (2019) An investigation into data sharing between building information modelling and fire safety engineering, with potential applications to smart buildings, Unpublished PhD Thesis, , University of Greenwich.
Simpson, Y (2014) The potential impact of the HE Educational White Paper 2011 on higher education and professional construction education: professional quantity surveying education in England, Unpublished PhD Thesis, Department of Education & Community Studies, University of Greenwich.
Thompson, O (2020) Towards a comprehensive understanding of human behaviour in dwelling fires, Unpublished PhD Thesis, , University of Greenwich.
Umeokafor, N I (2017) Realities of construction health and safety regulation in Nigeria, Unpublished PhD Thesis, School of Design, University of Greenwich.
Zhang, J (2018) Building a sustainability assessment model for highway infrastructure projects in Yunnan, China, Unpublished PhD Thesis, School of Architecture, Design & Construction, University of Greenwich.