Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge
During an explosion, a building’s stability is directly impacted by reinforced concrete (RC) columns. However, there is currently no theoretical analysis model that can precisely predict damage to RC columns after close-in/contact explosions. In the present study, the local damage response of RC col...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/10/3229 |
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| author | Qiuyang Wang Xin Jia Zhengxiang Huang Taian Chen Yujie Shi |
| author_facet | Qiuyang Wang Xin Jia Zhengxiang Huang Taian Chen Yujie Shi |
| author_sort | Qiuyang Wang |
| collection | DOAJ |
| description | During an explosion, a building’s stability is directly impacted by reinforced concrete (RC) columns. However, there is currently no theoretical analysis model that can precisely predict damage to RC columns after close-in/contact explosions. In the present study, the local damage response of RC columns under a rectangular charge was experimentally and numerically investigated, and a theoretical analysis model for predicting local damage after a contact explosion was developed. The experimental results verify the effects of concrete strength, standoff distance, transverse reinforcement spacing, and axial load on damage to RC columns. When the standoff is 100 mm, increasing the axial load can effectively reduce the damage to the center of the column surface. Numerical simulations were carried out to study the effect of different parameters on concrete damage, showing that the damage span of reinforced concrete increases with increased stirrup distance; however, when the stirrup distance decreases to 70 mm, the distance between the stirrups and the explosives is too close to limit the damage. The prediction model innovatively considers the attenuation of steel cross-section transmission and the characteristics of rectangular charges. Compared with traditional semi-empirical calculation models, it can accurately calculate local damage caused by contact explosions on reinforced concrete columns. |
| format | Article |
| id | doaj-art-d6d11c244ee54a37b2c16dde8a451875 |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-d6d11c244ee54a37b2c16dde8a4518752025-08-20T02:11:05ZengMDPI AGBuildings2075-53092024-10-011410322910.3390/buildings14103229Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular ChargeQiuyang Wang0Xin Jia1Zhengxiang Huang2Taian Chen3Yujie Shi4School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaMilitary Commission Equipment Development Center, Beijing 100034, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaDuring an explosion, a building’s stability is directly impacted by reinforced concrete (RC) columns. However, there is currently no theoretical analysis model that can precisely predict damage to RC columns after close-in/contact explosions. In the present study, the local damage response of RC columns under a rectangular charge was experimentally and numerically investigated, and a theoretical analysis model for predicting local damage after a contact explosion was developed. The experimental results verify the effects of concrete strength, standoff distance, transverse reinforcement spacing, and axial load on damage to RC columns. When the standoff is 100 mm, increasing the axial load can effectively reduce the damage to the center of the column surface. Numerical simulations were carried out to study the effect of different parameters on concrete damage, showing that the damage span of reinforced concrete increases with increased stirrup distance; however, when the stirrup distance decreases to 70 mm, the distance between the stirrups and the explosives is too close to limit the damage. The prediction model innovatively considers the attenuation of steel cross-section transmission and the characteristics of rectangular charges. Compared with traditional semi-empirical calculation models, it can accurately calculate local damage caused by contact explosions on reinforced concrete columns.https://www.mdpi.com/2075-5309/14/10/3229reinforced concrete columncontact explosionexperimental studypredictive model |
| spellingShingle | Qiuyang Wang Xin Jia Zhengxiang Huang Taian Chen Yujie Shi Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge Buildings reinforced concrete column contact explosion experimental study predictive model |
| title | Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge |
| title_full | Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge |
| title_fullStr | Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge |
| title_full_unstemmed | Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge |
| title_short | Experimental and Theoretical Study on Local Damage of Reinforced Concrete Column under Rectangular Charge |
| title_sort | experimental and theoretical study on local damage of reinforced concrete column under rectangular charge |
| topic | reinforced concrete column contact explosion experimental study predictive model |
| url | https://www.mdpi.com/2075-5309/14/10/3229 |
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