Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature
The behaviour of composite beam-slab structural system under fire condition has been investigated in the past few decades. However, previous research works mainly focused on isolated beam-slab sub-assemblages. In this paper, the boundary continuity effect on structural behaviour of composite beam-sl...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/163250 |
| _version_ | 1811688031944441856 |
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| author | Zhang, Yao Liu, Jun Xian Tan, Kang Hai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhang, Yao Liu, Jun Xian Tan, Kang Hai |
| author_sort | Zhang, Yao |
| collection | NTU |
| description | The behaviour of composite beam-slab structural system under fire condition has been investigated in the past few decades. However, previous research works mainly focused on isolated beam-slab sub-assemblages. In this paper, the boundary continuity effect on structural behaviour of composite beam-slab sub-assemblages subject to fire is investigated, where three different boundary continuities are considered, namely, internal, edge, and corner composite slab. Six specimens with a single unprotected interior beam were tested to failure, and two aspect ratios of 1 and 1.5 for each boundary condition were included. A total vertical load of 100 kN was applied to each specimen, which was heated by an electrical heating furnace from ambient temperature to 1000 °C within 1 h and maintained at 1000 °C until failure of the specimen occurred. The internal composite slab panel with an aspect ratio of 1 had the longest failure time and the edge composite slab panel with an aspect ratio of 1.5 sustained the longest duration. Finite Element (FE) models of the specimens validated by the experimental results were adopted to study membrane forces in the beam-slab sub-assemblage. Numerical simulations showed that different boundary continuities resulted in different membrane forces, and both the axial and rotational stiffness values in the direction of continuous edges were much greater than those of discontinuous edges for typical composite slabs. Moreover, the authors proposed minor amendments to Bailey-BRE method for calculating the enhanced load capacity at ultimate limit state and showed that the predictions were conservative when compared with test results. |
| first_indexed | 2024-10-01T05:25:45Z |
| format | Journal Article |
| id | ntu-10356/163250 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:25:45Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1632502022-11-29T06:56:15Z Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature Zhang, Yao Liu, Jun Xian Tan, Kang Hai School of Civil and Environmental Engineering Engineering::Civil engineering Elevated Temperature Boundary Continuity Effect The behaviour of composite beam-slab structural system under fire condition has been investigated in the past few decades. However, previous research works mainly focused on isolated beam-slab sub-assemblages. In this paper, the boundary continuity effect on structural behaviour of composite beam-slab sub-assemblages subject to fire is investigated, where three different boundary continuities are considered, namely, internal, edge, and corner composite slab. Six specimens with a single unprotected interior beam were tested to failure, and two aspect ratios of 1 and 1.5 for each boundary condition were included. A total vertical load of 100 kN was applied to each specimen, which was heated by an electrical heating furnace from ambient temperature to 1000 °C within 1 h and maintained at 1000 °C until failure of the specimen occurred. The internal composite slab panel with an aspect ratio of 1 had the longest failure time and the edge composite slab panel with an aspect ratio of 1.5 sustained the longest duration. Finite Element (FE) models of the specimens validated by the experimental results were adopted to study membrane forces in the beam-slab sub-assemblage. Numerical simulations showed that different boundary continuities resulted in different membrane forces, and both the axial and rotational stiffness values in the direction of continuous edges were much greater than those of discontinuous edges for typical composite slabs. Moreover, the authors proposed minor amendments to Bailey-BRE method for calculating the enhanced load capacity at ultimate limit state and showed that the predictions were conservative when compared with test results. Agency for Science, Technology and Research (A*STAR) The research presented was funded by Agency for Science, Technology and Research (A*Star Singapore) and cooperated with Singapore Civil Defence Force (SCDF). The financial support of A*STAR (M4070013.030) is gratefully acknowledged. 2022-11-29T06:56:15Z 2022-11-29T06:56:15Z 2022 Journal Article Zhang, Y., Liu, J. X. & Tan, K. H. (2022). Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature. Journal of Constructional Steel Research, 198, 107523-. https://dx.doi.org/10.1016/j.jcsr.2022.107523 0143-974X https://hdl.handle.net/10356/163250 10.1016/j.jcsr.2022.107523 2-s2.0-85137155864 198 107523 en M4070013.030 Journal of Constructional Steel Research © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Elevated Temperature Boundary Continuity Effect Zhang, Yao Liu, Jun Xian Tan, Kang Hai Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature |
| title | Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature |
| title_full | Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature |
| title_fullStr | Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature |
| title_full_unstemmed | Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature |
| title_short | Boundary continuity effect on performance of composite beam-slab sub-assemblages at elevated temperature |
| title_sort | boundary continuity effect on performance of composite beam slab sub assemblages at elevated temperature |
| topic | Engineering::Civil engineering Elevated Temperature Boundary Continuity Effect |
| url | https://hdl.handle.net/10356/163250 |
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