Numerical study on existing RC circular section members under unequal impact collision
Abstract Traffic accidents and derailed train-related incidents have occurred more often than ever in recent years, resulting in some economic damage and casualties. Reinforced concrete (RC) constructions often involve derailed train and vehicle accidents. Rarely are such side collisions studied in...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-19144-1 |
| _version_ | 1811274908012904448 |
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| author | Liu Yanhui Khalil Al-Bukhaiti Zhao Shichun Hussein Abas Xu Nan Yang Lang Yan Xing Yu Han Daguang |
| author_facet | Liu Yanhui Khalil Al-Bukhaiti Zhao Shichun Hussein Abas Xu Nan Yang Lang Yan Xing Yu Han Daguang |
| author_sort | Liu Yanhui |
| collection | DOAJ |
| description | Abstract Traffic accidents and derailed train-related incidents have occurred more often than ever in recent years, resulting in some economic damage and casualties. Reinforced concrete (RC) constructions often involve derailed train and vehicle accidents. Rarely are such side collisions studied in previous studies. To do this, high-fidelity simulation-based finite-element (FE) models are created in this paper to accurately simulate the collision of circular RC members with a derailed train. The reinforced concrete member structure is common in high-speed railway stations. The impact energy of the impact body is significant, causing structural member failure. It analyses the dynamic behavior of reinforced concrete members under unequal span impact loads. Numerical implementations of impact issues are discussed from the perspective of geometric, contact, and material properties. The reliability and precision of the ABAQUS code to solve impact issues are verified by comparing failure modes, impact, and deflection time history experimental outputs. By analysing the impact response characteristics, used the control variables to study the failure process and mode (including the characteristics of impact and reaction forces, deflection time history curve, impact force–deflection curve, and bearing reaction force–deflection curve). The reinforcement ratio, impact velocity, concrete strength, and slenderness ratio significantly affect shear crack pattern and development. Changes in impact velocity and slenderness ratio also affect member failure modes. |
| first_indexed | 2024-04-12T23:28:40Z |
| format | Article |
| id | doaj.art-c6dff9efff6949a7814451e9145a3d2a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T23:28:40Z |
| publishDate | 2022-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-c6dff9efff6949a7814451e9145a3d2a2022-12-22T03:12:21ZengNature PortfolioScientific Reports2045-23222022-08-0112112410.1038/s41598-022-19144-1Numerical study on existing RC circular section members under unequal impact collisionLiu Yanhui0Khalil Al-Bukhaiti1Zhao Shichun2Hussein Abas3Xu Nan4Yang Lang5Yan Xing Yu6Han Daguang7School of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversityDepartment of Civil Engineering and Energy Technology, Faculty of Technology, Art and Design, Oslo Metropolitan UniversityAbstract Traffic accidents and derailed train-related incidents have occurred more often than ever in recent years, resulting in some economic damage and casualties. Reinforced concrete (RC) constructions often involve derailed train and vehicle accidents. Rarely are such side collisions studied in previous studies. To do this, high-fidelity simulation-based finite-element (FE) models are created in this paper to accurately simulate the collision of circular RC members with a derailed train. The reinforced concrete member structure is common in high-speed railway stations. The impact energy of the impact body is significant, causing structural member failure. It analyses the dynamic behavior of reinforced concrete members under unequal span impact loads. Numerical implementations of impact issues are discussed from the perspective of geometric, contact, and material properties. The reliability and precision of the ABAQUS code to solve impact issues are verified by comparing failure modes, impact, and deflection time history experimental outputs. By analysing the impact response characteristics, used the control variables to study the failure process and mode (including the characteristics of impact and reaction forces, deflection time history curve, impact force–deflection curve, and bearing reaction force–deflection curve). The reinforcement ratio, impact velocity, concrete strength, and slenderness ratio significantly affect shear crack pattern and development. Changes in impact velocity and slenderness ratio also affect member failure modes.https://doi.org/10.1038/s41598-022-19144-1 |
| spellingShingle | Liu Yanhui Khalil Al-Bukhaiti Zhao Shichun Hussein Abas Xu Nan Yang Lang Yan Xing Yu Han Daguang Numerical study on existing RC circular section members under unequal impact collision Scientific Reports |
| title | Numerical study on existing RC circular section members under unequal impact collision |
| title_full | Numerical study on existing RC circular section members under unequal impact collision |
| title_fullStr | Numerical study on existing RC circular section members under unequal impact collision |
| title_full_unstemmed | Numerical study on existing RC circular section members under unequal impact collision |
| title_short | Numerical study on existing RC circular section members under unequal impact collision |
| title_sort | numerical study on existing rc circular section members under unequal impact collision |
| url | https://doi.org/10.1038/s41598-022-19144-1 |
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