Experimental tests of steel frames with different beam-column connections under falling debris impact
Falling debris may initiate or promote the progressive collapse of a structure. To mitigate progressive collapse under falling debris impact, steel frames with five types of beam-column connections were tested. Both single and multiple impacts were applied to each specimen to obtain dynamic response...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/159632 |
| _version_ | 1824455548769140736 |
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| author | Wang, Hao Tan, Kang Hai Yang, Bo |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Wang, Hao Tan, Kang Hai Yang, Bo |
| author_sort | Wang, Hao |
| collection | NTU |
| description | Falling debris may initiate or promote the progressive collapse of a structure. To mitigate progressive collapse under falling debris impact, steel frames with five types of beam-column connections were tested. Both single and multiple impacts were applied to each specimen to obtain dynamic responses, load-resisting mechanisms, and impact resistance. The results showed that a typical impact process was divided into three stages. The falling debris impact was mainly resisted by the inertia effect in the initial stage and by deformation in subsequent stages. The majority of the external work applied to the system was absorbed by bending deformation, especially by the plastic rotation at midspan of the beam. All the specimens had the same global deformation shape under the midspan impact scenario. The evolution of catenary action in specimens with different beam-column connections was similar. Catenary action was shown to significantly improve the load-carrying capacity and energy absorption in specimens with high levels of rotational ductility. Greater load-carrying capacity did not offer greater impact resistance. Load-carrying capacity and ductility both played a significant role in the energy absorption capability of the specimens. |
| first_indexed | 2025-02-19T03:39:58Z |
| format | Journal Article |
| id | ntu-10356/159632 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:39:58Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1596322022-06-30T04:31:57Z Experimental tests of steel frames with different beam-column connections under falling debris impact Wang, Hao Tan, Kang Hai Yang, Bo School of Civil and Environmental Engineering Engineering::Civil engineering Steel Frames Energy Absorption Falling debris may initiate or promote the progressive collapse of a structure. To mitigate progressive collapse under falling debris impact, steel frames with five types of beam-column connections were tested. Both single and multiple impacts were applied to each specimen to obtain dynamic responses, load-resisting mechanisms, and impact resistance. The results showed that a typical impact process was divided into three stages. The falling debris impact was mainly resisted by the inertia effect in the initial stage and by deformation in subsequent stages. The majority of the external work applied to the system was absorbed by bending deformation, especially by the plastic rotation at midspan of the beam. All the specimens had the same global deformation shape under the midspan impact scenario. The evolution of catenary action in specimens with different beam-column connections was similar. Catenary action was shown to significantly improve the load-carrying capacity and energy absorption in specimens with high levels of rotational ductility. Greater load-carrying capacity did not offer greater impact resistance. Load-carrying capacity and ductility both played a significant role in the energy absorption capability of the specimens. Ministry of Home Affairs The authors gratefully acknowledge the financial support provided by the Fundamental Research Funds for the Central Universities in China (No. 2019CDQYTM037), the National Natural Science Foundation of China (51778086), the program of China Scholarships Council (No. 201506050087), and the Ministry of Home Affairs in Singapore. 2022-06-30T04:30:14Z 2022-06-30T04:30:14Z 2020 Journal Article Wang, H., Tan, K. H. & Yang, B. (2020). Experimental tests of steel frames with different beam-column connections under falling debris impact. Journal of Structural Engineering, 146(1), 04019183-. https://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0002469 0733-9445 https://hdl.handle.net/10356/159632 10.1061/(ASCE)ST.1943-541X.0002469 2-s2.0-85075012811 1 146 04019183 en Journal of Structural Engineering © 2020 American Society of Civil Engineers. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Steel Frames Energy Absorption Wang, Hao Tan, Kang Hai Yang, Bo Experimental tests of steel frames with different beam-column connections under falling debris impact |
| title | Experimental tests of steel frames with different beam-column connections under falling debris impact |
| title_full | Experimental tests of steel frames with different beam-column connections under falling debris impact |
| title_fullStr | Experimental tests of steel frames with different beam-column connections under falling debris impact |
| title_full_unstemmed | Experimental tests of steel frames with different beam-column connections under falling debris impact |
| title_short | Experimental tests of steel frames with different beam-column connections under falling debris impact |
| title_sort | experimental tests of steel frames with different beam column connections under falling debris impact |
| topic | Engineering::Civil engineering Steel Frames Energy Absorption |
| url | https://hdl.handle.net/10356/159632 |
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