Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading
The application of ECC materials in major stress and energy dissipation regions of prefabricated reinforced concrete (RC) shear walls to form prefabricated ECC/RC combined shear walls can improve the seismic capacity of structures. The stress and damage mechanism of a 1/2-scale two-story spatial str...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/3/772 |
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| author | Jian Yang Liqiang Jiang Haizhu Guo Guohuang Yao |
| author_facet | Jian Yang Liqiang Jiang Haizhu Guo Guohuang Yao |
| author_sort | Jian Yang |
| collection | DOAJ |
| description | The application of ECC materials in major stress and energy dissipation regions of prefabricated reinforced concrete (RC) shear walls to form prefabricated ECC/RC combined shear walls can improve the seismic capacity of structures. The stress and damage mechanism of a 1/2-scale two-story spatial structure specimen of the prefabricated ECC/RC combined shear wall under low cyclic loading is numerically simulated. By comparing the numerical simulation results with the experimental results, the correctness of the numerical simulation method is verified. On this basis, a detailed whole process analysis is carried out by the numerical simulation method, including the stress distribution of the concrete and ECC, compression damage of the concrete and ECC, crack distribution of the concrete and ECC, stress distribution of the reinforcement, and structural and fabricated joint displacement. The whole process analysis effectively reflects the cracking, damage, and failure law of the specimen and extensively reveals the failure mechanism and internal force distribution law of the fabricated ECC/RC combined shear wall structure. Based on the stress and damage mechanism, the seismic energy dissipation performance with different ranges of ECC use in the bottom of the wall is studied. The results show that when the ECC height of the bottom walls is 400 mm, the energy dissipation performance of the prefabricated ECC/RC combined shear wall structure reaches an optimal value. |
| first_indexed | 2024-03-11T06:49:26Z |
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| id | doaj.art-3c84833f60e84f05a584f1fd7660a0cc |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T06:49:26Z |
| publishDate | 2023-03-01 |
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| record_format | Article |
| series | Buildings |
| spelling | doaj.art-3c84833f60e84f05a584f1fd7660a0cc2023-11-17T10:03:56ZengMDPI AGBuildings2075-53092023-03-0113377210.3390/buildings13030772Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic LoadingJian Yang0Liqiang Jiang1Haizhu Guo2Guohuang Yao3School of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, ChinaSchool of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, ChinaThe application of ECC materials in major stress and energy dissipation regions of prefabricated reinforced concrete (RC) shear walls to form prefabricated ECC/RC combined shear walls can improve the seismic capacity of structures. The stress and damage mechanism of a 1/2-scale two-story spatial structure specimen of the prefabricated ECC/RC combined shear wall under low cyclic loading is numerically simulated. By comparing the numerical simulation results with the experimental results, the correctness of the numerical simulation method is verified. On this basis, a detailed whole process analysis is carried out by the numerical simulation method, including the stress distribution of the concrete and ECC, compression damage of the concrete and ECC, crack distribution of the concrete and ECC, stress distribution of the reinforcement, and structural and fabricated joint displacement. The whole process analysis effectively reflects the cracking, damage, and failure law of the specimen and extensively reveals the failure mechanism and internal force distribution law of the fabricated ECC/RC combined shear wall structure. Based on the stress and damage mechanism, the seismic energy dissipation performance with different ranges of ECC use in the bottom of the wall is studied. The results show that when the ECC height of the bottom walls is 400 mm, the energy dissipation performance of the prefabricated ECC/RC combined shear wall structure reaches an optimal value.https://www.mdpi.com/2075-5309/13/3/772prefabricated ECC/RC combined shear walllow cyclic loadingstress and damage mechanisminternal force distributioncrack distributionenergy dissipation performance optimization |
| spellingShingle | Jian Yang Liqiang Jiang Haizhu Guo Guohuang Yao Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading Buildings prefabricated ECC/RC combined shear wall low cyclic loading stress and damage mechanism internal force distribution crack distribution energy dissipation performance optimization |
| title | Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading |
| title_full | Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading |
| title_fullStr | Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading |
| title_full_unstemmed | Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading |
| title_short | Stress Mechanism and Energy Dissipation Performance Optimization of Prefabricated ECC/RC Combined Shear Walls under Low Cyclic Loading |
| title_sort | stress mechanism and energy dissipation performance optimization of prefabricated ecc rc combined shear walls under low cyclic loading |
| topic | prefabricated ECC/RC combined shear wall low cyclic loading stress and damage mechanism internal force distribution crack distribution energy dissipation performance optimization |
| url | https://www.mdpi.com/2075-5309/13/3/772 |
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