Structural health monitoring of tunnel liners

SFRC is a composite material that has high cracking resistance. Thus, it is used in precast tunnel segment production to resist stress induced by mechanical handling of tunnel boring machines. However, due to lack of experimental data and special design code makes unable to take full advantage...

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Main Author: Sett, Han Htoo
Other Authors: Yang Yaowen
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2022
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Online Access:https://hdl.handle.net/10356/163915
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1639152022-12-27T00:37:22Z Structural health monitoring of tunnel liners Sett, Han Htoo Yang Yaowen School of Civil and Environmental Engineering CYWYang@ntu.edu.sg Engineering::Civil engineering::Structures and design SFRC is a composite material that has high cracking resistance. Thus, it is used in precast tunnel segment production to resist stress induced by mechanical handling of tunnel boring machines. However, due to lack of experimental data and special design code makes unable to take full advantages of SFRC material properties. The aim is to study stress-strain behaviour of 3 points bending action using finite element method. The results showed SFRC can assist rebars in resisting tensile stress before cracking as well as increase cracking load. Therefore, it can be said that steel fibres can partially replace rebars. On the other hand, after cracking, rebars took majority of tensile stress. Thus, rebars are more effective after cracking as well as ultimate loads compared to steel fibres. For these reasons, special design rules should be made to take advantages of its properties yet still with considerations for its disadvantages. Finally, due to complexity and arbitrary nature of finite element method, experiments should be conducted to validate FEM results. Bachelor of Engineering (Civil) 2022-12-27T00:37:22Z 2022-12-27T00:37:22Z 2022 Final Year Project (FYP) Sett, H. H. (2022). Structural health monitoring of tunnel liners. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/163915 https://hdl.handle.net/10356/163915 en ST-46 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering::Structures and design
spellingShingle Engineering::Civil engineering::Structures and design
Sett, Han Htoo
Structural health monitoring of tunnel liners
description SFRC is a composite material that has high cracking resistance. Thus, it is used in precast tunnel segment production to resist stress induced by mechanical handling of tunnel boring machines. However, due to lack of experimental data and special design code makes unable to take full advantages of SFRC material properties. The aim is to study stress-strain behaviour of 3 points bending action using finite element method. The results showed SFRC can assist rebars in resisting tensile stress before cracking as well as increase cracking load. Therefore, it can be said that steel fibres can partially replace rebars. On the other hand, after cracking, rebars took majority of tensile stress. Thus, rebars are more effective after cracking as well as ultimate loads compared to steel fibres. For these reasons, special design rules should be made to take advantages of its properties yet still with considerations for its disadvantages. Finally, due to complexity and arbitrary nature of finite element method, experiments should be conducted to validate FEM results.
author2 Yang Yaowen
author_facet Yang Yaowen
Sett, Han Htoo
format Final Year Project
author Sett, Han Htoo
author_sort Sett, Han Htoo
title Structural health monitoring of tunnel liners
title_short Structural health monitoring of tunnel liners
title_full Structural health monitoring of tunnel liners
title_fullStr Structural health monitoring of tunnel liners
title_full_unstemmed Structural health monitoring of tunnel liners
title_sort structural health monitoring of tunnel liners
publisher Nanyang Technological University
publishDate 2022
url https://hdl.handle.net/10356/163915
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