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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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 |
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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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1753801091906011136 |