| 11. |
- Melbourne, Clive, et al.
(author)
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Masonry Arch Bridges : Sustainable Bridges Background document 4.7
- 2007
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Reports (peer-reviewed)abstract
- A recent survey showed that 40% of existing rail network bridges in Europe are masonry arches. More than 60% of those bridges are over 100 years old and still carry ever increasing levels of loading and increasing volumes of traffic. Due to the constantly increasing weight of rail traffic there is increasing demand for better understanding of their life expectancy and fatigue limits. It is imperative that the bridge stock is not adversely affected by these changes in the loading regime and that appropriate assessment, modelling, repair and strengthening techniques are available.This background document is an attempt to address and solve the above questions.To this end, the document is divided in the following parts:D4.7.1 Structural assessment of masonry arch bridgesD4.7.2 Numerical analyses of load distribution and deflections in railway bridge transitionzones due to passing trainsD4.7.3 Methods of analysis of damaged masonry arch bridgesD4.7.4 Potentiality of probabilistic methods in the assessment of masonry arches
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| 12. |
- Saback, Vanessa
(author)
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Digital Twins for Asset Management of Civil Structures : Perceived Potential and Practical Applications
- 2024
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Doctoral thesis (other academic/artistic)abstract
- The Engineering and Construction (E&C) industry has vast potential to leverage technology for solving current asset management issues, with significant environmental and financial benefits. This study investigates the use of Digital Twins (DTs) for asset management of civil structures, identifying a gap between the perceived potential of DTs and practical applications due to misconceptions, industry fragmentation, and lack of standardizations. To address this, a literature review and experimental programs were conducted, leading to the development and validation of a proof-of-concept DT platform applied to two case studies. The study concludes with a purpose-driven DT roadmap to address the gap between potential and practical applications in the E&C industry.Background: the integration of Building Information Modeling (BIM) and DTs for asset management in construction offers a promising solution to improve current processes, which are often time-consuming or inefficient. With technology rapidly advancing and the advent of Industry 4.0, there is a growing belief in the transformative potential of DTs to address longstanding challenges within the industry. By leveraging these innovative tools, stakeholders aim to enhance operational efficiency, optimize maintenance practices, and ultimately revolutionize infrastructure asset management.Aims and objectives: this study aims to investigate the use of DTs to improve asset management processes within the E&C industry. The objectives include a thorough investigation of DTs, establishing their purpose within the industry, proposing a replicable DT methodology, demonstrating the methodology through case studies, and addressing the gap between potential and practical applications to promote DT dissemination.Methodological approach:i. Identify problem: thorough literature review and DT investigation (Paper I).ii. Define solution: understand the purpose of DT applications in E&C (Paper II).iii. Methodology and Demonstration: propose and demonstrate a replicable DT methodology through experimental work, digital modelling, and case studies (Papers III, IV, and V).iv. Evaluation: propose a purpose-driven DT roadmap to evaluate the impact of applications, address the gap between potential and applications, and promote widespread DT adoption (Paper VI).Results: the main results include a deep DT investigation, experimental work with a reinforced concrete beam, snow galleries and a trough bridge, digital models using BIM and finite elements, a scalable DT platform methodology demonstrated in two case studies, and a roadmap from conclusions and lessons learned to promote DT adoption in the industry.Conclusions: given the particularities of the E&C industry and its assets, DTs can primarily benefit asset management and maintenance processes by enabling real-time monitoring, predictive maintenance, and data integration for improved safety and efficiency. To address the gap between potential and practical applications, two paradigm shifts are proposed: shifting the perception of DTs from a digital model to integrated technology tools, and adopting a generalizable, purpose-focused approach instead of context-specific frameworks.
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| 13. |
- Sarmiento Nova, Silvia Juliana, et al.
(author)
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A risk-based robustness evaluation of a prestressed concrete bridge
- 2023
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In: Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability - Proceedings of the 11th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2022. - London : CRC Press. - 9781032345314 ; , s. 2045-2052, s. 2045-2052
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Conference paper (peer-reviewed)abstract
- Existing bridges were designed to satisfy old specifications, and most of them were based on a member-oriented approach. A bridge superstructure is constituted by a group of elements that together form a system, and depending on how robust the system is, a member-oriented approach losses accuracy. Therefore, in this study a preliminary framework of how to assess concrete bridges' robustness is presented. The framework integrates a metamodel-based reliability analysis, and the risk concepts to evaluate the robustness level for concrete bridges considering failure probabilities and consequences. A case study of a prestressed multi-beam concrete bridge is used to validate and illustrate the methodology. The capacity of the individual elements, as well as of the intact and damaged structural system are calculated using finite element modeling (FEM). It was concluded that the framework proposed can be used to assess structural robustness with low computational cost, for the cases in which FEM is implemented.
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| 14. |
- Suttie, Ed, et al.
(author)
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Performance Based Specification of Wood - Project CLICKdesign
- 2020
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In: Proceedings of the 15th International Conference on Durability of Building Materials and Components, DBMC 2020. - : CIMNE. - 9788412110180 ; , s. 457-464
-
Conference paper (peer-reviewed)abstract
- This paper introduces the ForestValue research project CLICKdesign - delivering fingertip knowledge to enable service life performance specification of wood. The consortium is working on a primary innovation to move from the complex, fragmented and general to the easy-to-use, consolidated and specific by provision of a digital tool for specifiers. Other materials tackle this and provide designers and architects with software. The specification of performance of wood products is complex and fraught with inconsistency and requires use of multiple platforms for data, experience, standards and national recommendations. CLICKdesign will provide a tool that has within it the decades of research, the complexity of the standards specification systems and the variation of approach due to tradition, materials and culture across Europe and beyond. A simple tool for nonexpert public users will be available as well as a tool accessible to professional users that will be refined with industry to ensure relevancy and accelerate uptake and use.
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