Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure
To investigate the shear capacity and failure mechanism of RC beams after fire exposure, fourteen full-scale beams without stirrups were tested at ambient temperature and after fire exposure. Three parameters, including the loading ratio, shear span-to-depth ratio and longitudinal reinforcement rati...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/10/1706 |
| _version_ | 1797474549435990016 |
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| author | Yamin Song Chuanguo Fu Shuting Liang |
| author_facet | Yamin Song Chuanguo Fu Shuting Liang |
| author_sort | Yamin Song |
| collection | DOAJ |
| description | To investigate the shear capacity and failure mechanism of RC beams after fire exposure, fourteen full-scale beams without stirrups were tested at ambient temperature and after fire exposure. Three parameters, including the loading ratio, shear span-to-depth ratio and longitudinal reinforcement ratio, were considered in static load tests. The deterioration mechanism of the shear bearing capacity at the diagonal section of RC beams without stirrups after fire exposure was experimentally, numerically and theoretically revealed, and a calculation formula for the shear capacity of post-fire beams without stirrups was proposed. The results show that the shear capacity and stiffness of the specimens decreased after fire exposure, and the shear strength loss of the beams increased with fire exposure time. The shear capacity and stiffness of fire-damaged specimens decreased as the shear span ratio λ increased, and the shear strength loss of the beams decreased with λ. Compared with the theoretical calculation and experimental results of beams without stirrups, the average of the absolute errors was 10.48%. Therefore, this formula can better calculate the residual shear capacity of beam without stirrups after fire exposure. |
| first_indexed | 2024-03-09T20:32:41Z |
| format | Article |
| id | doaj.art-0fc7c6e083654521a21792e4f9af09fd |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T20:32:41Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-0fc7c6e083654521a21792e4f9af09fd2023-11-23T23:18:39ZengMDPI AGBuildings2075-53092022-10-011210170610.3390/buildings12101706Residual Shear Capacity of RC Beams without Stirrups after Fire ExposureYamin Song0Chuanguo Fu1Shuting Liang2School of Civil Engineering, Don College of Shandong Jiaotong University, Jinan 250357, ChinaSchool of Civil Engineering, Shandong Jianzhu University, Jinan 250101, ChinaSchool of Civil Engineering, Southeast University, Nanjing 210096, ChinaTo investigate the shear capacity and failure mechanism of RC beams after fire exposure, fourteen full-scale beams without stirrups were tested at ambient temperature and after fire exposure. Three parameters, including the loading ratio, shear span-to-depth ratio and longitudinal reinforcement ratio, were considered in static load tests. The deterioration mechanism of the shear bearing capacity at the diagonal section of RC beams without stirrups after fire exposure was experimentally, numerically and theoretically revealed, and a calculation formula for the shear capacity of post-fire beams without stirrups was proposed. The results show that the shear capacity and stiffness of the specimens decreased after fire exposure, and the shear strength loss of the beams increased with fire exposure time. The shear capacity and stiffness of fire-damaged specimens decreased as the shear span ratio λ increased, and the shear strength loss of the beams decreased with λ. Compared with the theoretical calculation and experimental results of beams without stirrups, the average of the absolute errors was 10.48%. Therefore, this formula can better calculate the residual shear capacity of beam without stirrups after fire exposure.https://www.mdpi.com/2075-5309/12/10/1706fire exposureshear capacityshear span ratioload ratiolongitudinal reinforcement ratio |
| spellingShingle | Yamin Song Chuanguo Fu Shuting Liang Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure Buildings fire exposure shear capacity shear span ratio load ratio longitudinal reinforcement ratio |
| title | Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure |
| title_full | Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure |
| title_fullStr | Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure |
| title_full_unstemmed | Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure |
| title_short | Residual Shear Capacity of RC Beams without Stirrups after Fire Exposure |
| title_sort | residual shear capacity of rc beams without stirrups after fire exposure |
| topic | fire exposure shear capacity shear span ratio load ratio longitudinal reinforcement ratio |
| url | https://www.mdpi.com/2075-5309/12/10/1706 |
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