Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons
This study is focused on the topic of moment redistribution in post-tensioned continuous beams with steel tendons, specifically in two-span symmetrically loaded beams. It is known that prestressed reinforced concrete beams are able to achieve a higher slenderness ratio and durability as compared t...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/153850 |
| _version_ | 1826116815127838720 |
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| author | Lee, Lucas Guan Yin |
| author2 | Li Bing |
| author_facet | Li Bing Lee, Lucas Guan Yin |
| author_sort | Lee, Lucas Guan Yin |
| collection | NTU |
| description | This study is focused on the topic of moment redistribution in post-tensioned continuous beams with steel tendons, specifically in two-span symmetrically loaded beams.
It is known that prestressed reinforced concrete beams are able to achieve a higher slenderness ratio and durability as compared to their normal reinforced concrete counterparts. However, there are uncertainties in the understanding of moment redistribution in prestressed concrete beams as compared to reinforced concrete beams. An extensive investigation into the factors influencing moment redistribution through numerical models using DIANA was carried out in this study to provide more clarity.
Although the ACI 318-19 code provision was developed based on net tensile strain, while the EC2 provision was developed based on a neutral axis depth, both ACI 318-19 and EC2 have provided their respective provisions for moment redistribution in prestressed concrete beams as that for reinforced concrete beams. The applicability of ACI 318-19 and EC2 code provision have been included in this study.
The investigation has revealed that parameters not considered in the provisions of ACI 318-19 and EC2, such as eccentricities of prestressed tendons, load condition, slenderness ratio, ps and pp, influences moment redistribution. Particularly, eccentricities of prestressed tendons and load conditions are significant considerations. ACI 318-19 was found to be more rational than EC2 when used to evaluate the degree of moment redistribution in these post-tensioned beams. |
| first_indexed | 2024-10-01T04:17:36Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/153850 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:17:36Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1538502021-12-16T13:02:04Z Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons Lee, Lucas Guan Yin Li Bing School of Civil and Environmental Engineering CBLi@ntu.edu.sg Engineering::Civil engineering::Structures and design This study is focused on the topic of moment redistribution in post-tensioned continuous beams with steel tendons, specifically in two-span symmetrically loaded beams. It is known that prestressed reinforced concrete beams are able to achieve a higher slenderness ratio and durability as compared to their normal reinforced concrete counterparts. However, there are uncertainties in the understanding of moment redistribution in prestressed concrete beams as compared to reinforced concrete beams. An extensive investigation into the factors influencing moment redistribution through numerical models using DIANA was carried out in this study to provide more clarity. Although the ACI 318-19 code provision was developed based on net tensile strain, while the EC2 provision was developed based on a neutral axis depth, both ACI 318-19 and EC2 have provided their respective provisions for moment redistribution in prestressed concrete beams as that for reinforced concrete beams. The applicability of ACI 318-19 and EC2 code provision have been included in this study. The investigation has revealed that parameters not considered in the provisions of ACI 318-19 and EC2, such as eccentricities of prestressed tendons, load condition, slenderness ratio, ps and pp, influences moment redistribution. Particularly, eccentricities of prestressed tendons and load conditions are significant considerations. ACI 318-19 was found to be more rational than EC2 when used to evaluate the degree of moment redistribution in these post-tensioned beams. Bachelor of Engineering (Civil) 2021-12-15T00:56:15Z 2021-12-15T00:56:15Z 2021 Final Year Project (FYP) Lee, L. G. Y. (2021). Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/153850 https://hdl.handle.net/10356/153850 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Civil engineering::Structures and design Lee, Lucas Guan Yin Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons |
| title | Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons |
| title_full | Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons |
| title_fullStr | Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons |
| title_full_unstemmed | Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons |
| title_short | Evaluation of ACI 318-19 and EC2 on moment redistribution of post-tensioned continuous beams with steel tendons |
| title_sort | evaluation of aci 318 19 and ec2 on moment redistribution of post tensioned continuous beams with steel tendons |
| topic | Engineering::Civil engineering::Structures and design |
| url | https://hdl.handle.net/10356/153850 |
| work_keys_str_mv | AT leelucasguanyin evaluationofaci31819andec2onmomentredistributionofposttensionedcontinuousbeamswithsteeltendons |