Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading
Concrete-encased concrete-filled steel tube (CECFST) structural system has gained popularity in recent years due to its several advantages over conventional structures. Additionally, precast technology has become an effective way of improving construction efficiency and environmental performance. Th...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/179254 |
| _version_ | 1811679606424469504 |
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| author | Qiao, Meixia Ma, You-Xin Fung, Tat Ching Tan, Kang Hai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Qiao, Meixia Ma, You-Xin Fung, Tat Ching Tan, Kang Hai |
| author_sort | Qiao, Meixia |
| collection | NTU |
| description | Concrete-encased concrete-filled steel tube (CECFST) structural system has gained popularity in recent years due to its several advantages over conventional structures. Additionally, precast technology has become an effective way of improving construction efficiency and environmental performance. Therefore, it is essential to investigate the structural behaviour of precast concrete (PC) beam-to-CECFST column joints to ensure their optimal performance in applications. In this regard, this paper presents an experimental study of 4 precast exterior joints subjected to lateral cyclic loading. The study investigated the effect of replacing normal concrete with steel fibre-reinforced concrete at the joint region and the presence of axial load on PC composite joints. Based on the test results, cyclic load-carrying resistance, failure modes and crack patterns of the PC specimens were recorded and analysed. In addition, a Digital Image Correlation (DIC) system was adopted to show the crack evolution of joint specimens and calculate shear strains of concrete encasement at the joint region. Further comparisons were conducted in terms of ductility, energy dissipation, stiffness and strength degradation to investigate the joint performance. Finally, existing American and European design code provisions were modified and used to predict joint shear strength. Their predictions were reasonably close to the test results. |
| first_indexed | 2024-10-01T03:11:50Z |
| format | Journal Article |
| id | ntu-10356/179254 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:11:50Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1792542024-07-23T06:47:11Z Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading Qiao, Meixia Ma, You-Xin Fung, Tat Ching Tan, Kang Hai School of Civil and Environmental Engineering Engineering Precast composite joints Shear design Concrete-encased concrete-filled steel tube (CECFST) structural system has gained popularity in recent years due to its several advantages over conventional structures. Additionally, precast technology has become an effective way of improving construction efficiency and environmental performance. Therefore, it is essential to investigate the structural behaviour of precast concrete (PC) beam-to-CECFST column joints to ensure their optimal performance in applications. In this regard, this paper presents an experimental study of 4 precast exterior joints subjected to lateral cyclic loading. The study investigated the effect of replacing normal concrete with steel fibre-reinforced concrete at the joint region and the presence of axial load on PC composite joints. Based on the test results, cyclic load-carrying resistance, failure modes and crack patterns of the PC specimens were recorded and analysed. In addition, a Digital Image Correlation (DIC) system was adopted to show the crack evolution of joint specimens and calculate shear strains of concrete encasement at the joint region. Further comparisons were conducted in terms of ductility, energy dissipation, stiffness and strength degradation to investigate the joint performance. Finally, existing American and European design code provisions were modified and used to predict joint shear strength. Their predictions were reasonably close to the test results. The research study is supported by Jurong Town Corporation in Singapore under project grant entitled as “The behaviour and design of innovative composite concrete-steel structural system”. 2024-07-23T06:47:10Z 2024-07-23T06:47:10Z 2024 Journal Article Qiao, M., Ma, Y., Fung, T. C. & Tan, K. H. (2024). Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading. Journal of Building Engineering, 88, 109109-. https://dx.doi.org/10.1016/j.jobe.2024.109109 2352-7102 https://hdl.handle.net/10356/179254 10.1016/j.jobe.2024.109109 2-s2.0-85189507711 88 109109 en Journal of Building Engineering © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Precast composite joints Shear design Qiao, Meixia Ma, You-Xin Fung, Tat Ching Tan, Kang Hai Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading |
| title | Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading |
| title_full | Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading |
| title_fullStr | Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading |
| title_full_unstemmed | Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading |
| title_short | Experimental study on exterior precast concrete beam-to-CECFST column joints with wet connections under cyclic loading |
| title_sort | experimental study on exterior precast concrete beam to cecfst column joints with wet connections under cyclic loading |
| topic | Engineering Precast composite joints Shear design |
| url | https://hdl.handle.net/10356/179254 |
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