Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario
Due to the ample clearance provided by fin plate (FP) and top-and-seat with web angel (TSWA) connections for erection purposes, FP and TSWA connections are commonly utilised in steel structures. In addition, to provide alternate load paths for steel structures under a column-removal scenario, the co...
| 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/10356/177993 |
| _version_ | 1824453505492975616 |
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| author | Ma, You-Xin Chen, Shuang Tan, Kang Hai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Ma, You-Xin Chen, Shuang Tan, Kang Hai |
| author_sort | Ma, You-Xin |
| collection | NTU |
| description | Due to the ample clearance provided by fin plate (FP) and top-and-seat with web angel (TSWA) connections for erection purposes, FP and TSWA connections are commonly utilised in steel structures. In addition, to provide alternate load paths for steel structures under a column-removal scenario, the connections should be sufficiently robust, thereby triggering catenary action. Hence, to improve the robustness of FP and TSWA connections, novel arrangements of slotted holes were proposed for FP and TSWA connections in this study to form novel slot-bolted connections (SBCs). A total of five steel beam-column joint specimens with proposed novel SBCs were tested under a central-column-removal scenario. The experimental results, including failure modes, load–displacement curves, energy absorption capabilities and dynamic resistance, were presented and discussed in detail for all the specimens. The test results revealed that the adoption of proposed novel slotted holes for both FP and TSWA connections could improve their performance in resisting progressive collapse for steel structures. Additionally, to further investigate the behaviour of proposed novel SBCs under extreme loads, the moment–rotation curves of connections were also obtained based on the experimental results. It was found that the presence of slotted holes would decrease the moment capacity of connections, but dramatically increase the rotation capacity. Moreover, the ductility supply of connections with and without the slotted holes was evaluated and compared through the acceptable criteria specified in the design guide for progressive collapse. The comparison showed that the adoption of novel slotted holes could dramatically enhance the plastic rotation capacity for both FP and TSWA connections. |
| first_indexed | 2025-02-19T03:07:29Z |
| format | Journal Article |
| id | ntu-10356/177993 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:07:29Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1779932024-06-04T01:11:41Z Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario Ma, You-Xin Chen, Shuang Tan, Kang Hai School of Civil and Environmental Engineering Engineering Steel structures Progressive collapse Due to the ample clearance provided by fin plate (FP) and top-and-seat with web angel (TSWA) connections for erection purposes, FP and TSWA connections are commonly utilised in steel structures. In addition, to provide alternate load paths for steel structures under a column-removal scenario, the connections should be sufficiently robust, thereby triggering catenary action. Hence, to improve the robustness of FP and TSWA connections, novel arrangements of slotted holes were proposed for FP and TSWA connections in this study to form novel slot-bolted connections (SBCs). A total of five steel beam-column joint specimens with proposed novel SBCs were tested under a central-column-removal scenario. The experimental results, including failure modes, load–displacement curves, energy absorption capabilities and dynamic resistance, were presented and discussed in detail for all the specimens. The test results revealed that the adoption of proposed novel slotted holes for both FP and TSWA connections could improve their performance in resisting progressive collapse for steel structures. Additionally, to further investigate the behaviour of proposed novel SBCs under extreme loads, the moment–rotation curves of connections were also obtained based on the experimental results. It was found that the presence of slotted holes would decrease the moment capacity of connections, but dramatically increase the rotation capacity. Moreover, the ductility supply of connections with and without the slotted holes was evaluated and compared through the acceptable criteria specified in the design guide for progressive collapse. The comparison showed that the adoption of novel slotted holes could dramatically enhance the plastic rotation capacity for both FP and TSWA connections. Ministry of Home Affairs The authors gratefully acknowledge Ministry of Home Affairs (MHA), Singapore to provide the funding (MHA 191/9/1/345) under the Protective Technology Research Center, Nanyang Technological University, Singapore. Any opinions, findings and conclusions expressed in this paper are those of the authors and do not necessarily reflect the view of MHA, Singapore. 2024-06-04T01:11:41Z 2024-06-04T01:11:41Z 2024 Journal Article Ma, Y., Chen, S. & Tan, K. H. (2024). Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario. Journal of Constructional Steel Research, 214, 108481-. https://dx.doi.org/10.1016/j.jcsr.2024.108481 0143-974X https://hdl.handle.net/10356/177993 10.1016/j.jcsr.2024.108481 2-s2.0-85182728265 214 108481 en MHA 191/9/1/345 Journal of Constructional Steel Research © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Steel structures Progressive collapse Ma, You-Xin Chen, Shuang Tan, Kang Hai Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario |
| title | Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario |
| title_full | Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario |
| title_fullStr | Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario |
| title_full_unstemmed | Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario |
| title_short | Experimental study of steel beam-column joints with novel slot-bolted connections under a central-column-removal scenario |
| title_sort | experimental study of steel beam column joints with novel slot bolted connections under a central column removal scenario |
| topic | Engineering Steel structures Progressive collapse |
| url | https://hdl.handle.net/10356/177993 |
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