Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts
This study proposes a new type of dry exterior beam-column joints for precast moment-resisting concrete frames. This dry joint type uses steel fibre reinforced concrete (SFRC) and carbon fibre reinforced polymer (CFRP) bolts to improve the joint capacities. In addition, an analytical model to predic...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | English |
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ELSEVIER SCI LTD
2020
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/FL180100196 http://hdl.handle.net/20.500.11937/91613 |
| _version_ | 1848765558403629056 |
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| author | Ngo, Tang Tuan Pham, Thong Hao, Hong |
| author_facet | Ngo, Tang Tuan Pham, Thong Hao, Hong |
| author_sort | Ngo, Tang Tuan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study proposes a new type of dry exterior beam-column joints for precast moment-resisting concrete frames. This dry joint type uses steel fibre reinforced concrete (SFRC) and carbon fibre reinforced polymer (CFRP) bolts to improve the joint capacities. In addition, an analytical model to predict the load-carrying capacity of this precast joint type is also proposed. Five exterior beam-column joints were cast and tested under quasi-static cyclic loads until failure. The experimental results revealed that the use of SFRC significantly improved all the indices, including the load-carrying capacity, drift ratio, ductility, energy dissipation and stiffness. Also, the proposed joints outperformed the monolithic specimen in terms of load-carrying capacities, energy dissipation, and stiffness by 27–61%, 45–75%, and 27–55%, respectively. Particularly, the drift ratio of the proposed joints reached 3.5%, which satisfies the requirements for ductile joints to be used in earthquake-prone regions according to various standards. Finally, the proposed model yielded good predictions as compared to the experimental results with minor errors of approximately 0.9–2%. These exciting results indicate that the use of SFRC and CFRP bolts could help to avoid the challenging issue of corrosion in the conventional dry exterior joints and still ensure the sufficient requirements for reinforced concrete structures in non-seismic and seismic-prone areas. |
| first_indexed | 2025-11-14T11:37:10Z |
| format | Journal Article |
| id | curtin-20.500.11937-91613 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:10Z |
| publishDate | 2020 |
| publisher | ELSEVIER SCI LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-916132023-05-17T07:01:33Z Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts Ngo, Tang Tuan Pham, Thong Hao, Hong Science & Technology Technology Engineering, Civil Engineering Fibre Reinforced Polymer (FRP) bolts Steel fibres Ductile precast joint Prestress bolts Exterior dry joint Cyclic load Concrete-end-plates BEAM-COLUMN JOINTS POSTTENSIONED SEGMENTAL BEAMS REINFORCED-CONCRETE CONNECTIONS STRENGTH BRIDGE This study proposes a new type of dry exterior beam-column joints for precast moment-resisting concrete frames. This dry joint type uses steel fibre reinforced concrete (SFRC) and carbon fibre reinforced polymer (CFRP) bolts to improve the joint capacities. In addition, an analytical model to predict the load-carrying capacity of this precast joint type is also proposed. Five exterior beam-column joints were cast and tested under quasi-static cyclic loads until failure. The experimental results revealed that the use of SFRC significantly improved all the indices, including the load-carrying capacity, drift ratio, ductility, energy dissipation and stiffness. Also, the proposed joints outperformed the monolithic specimen in terms of load-carrying capacities, energy dissipation, and stiffness by 27–61%, 45–75%, and 27–55%, respectively. Particularly, the drift ratio of the proposed joints reached 3.5%, which satisfies the requirements for ductile joints to be used in earthquake-prone regions according to various standards. Finally, the proposed model yielded good predictions as compared to the experimental results with minor errors of approximately 0.9–2%. These exciting results indicate that the use of SFRC and CFRP bolts could help to avoid the challenging issue of corrosion in the conventional dry exterior joints and still ensure the sufficient requirements for reinforced concrete structures in non-seismic and seismic-prone areas. 2020 Journal Article http://hdl.handle.net/20.500.11937/91613 10.1016/j.engstruct.2019.110083 English http://purl.org/au-research/grants/arc/FL180100196 ELSEVIER SCI LTD fulltext |
| spellingShingle | Science & Technology Technology Engineering, Civil Engineering Fibre Reinforced Polymer (FRP) bolts Steel fibres Ductile precast joint Prestress bolts Exterior dry joint Cyclic load Concrete-end-plates BEAM-COLUMN JOINTS POSTTENSIONED SEGMENTAL BEAMS REINFORCED-CONCRETE CONNECTIONS STRENGTH BRIDGE Ngo, Tang Tuan Pham, Thong Hao, Hong Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts |
| title | Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts |
| title_full | Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts |
| title_fullStr | Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts |
| title_full_unstemmed | Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts |
| title_short | Effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using SFRC and CFRP bolts |
| title_sort | effects of steel fibres and prestress levels on behaviour of newly proposed exterior dry joints using sfrc and cfrp bolts |
| topic | Science & Technology Technology Engineering, Civil Engineering Fibre Reinforced Polymer (FRP) bolts Steel fibres Ductile precast joint Prestress bolts Exterior dry joint Cyclic load Concrete-end-plates BEAM-COLUMN JOINTS POSTTENSIONED SEGMENTAL BEAMS REINFORCED-CONCRETE CONNECTIONS STRENGTH BRIDGE |
| url | http://purl.org/au-research/grants/arc/FL180100196 http://hdl.handle.net/20.500.11937/91613 |