Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint
The seismic performance of prefabricated reinforced concrete shear walls is a key point in the safety of the whole assembly structure under earthquake actions. In this study, six specimens of reinforced concrete shear walls were assembled with a cast-in-place vertical joint with a straight, L, or co...
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| Format: | Article |
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MDPI AG
2023-12-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/12/3013 |
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| author | Junna Yang Yabin Yang Lianchao Deng Baoshan Sun Zhongjia Gu Lingxin Zeng Shunbo Zhao |
| author_facet | Junna Yang Yabin Yang Lianchao Deng Baoshan Sun Zhongjia Gu Lingxin Zeng Shunbo Zhao |
| author_sort | Junna Yang |
| collection | DOAJ |
| description | The seismic performance of prefabricated reinforced concrete shear walls is a key point in the safety of the whole assembly structure under earthquake actions. In this study, six specimens of reinforced concrete shear walls were assembled with a cast-in-place vertical joint with a straight, L, or convex shape. The specimens were tested using a low cyclic loading test under an axial compression ratio of 0.2 or 0.3. The stress process, failure pattern, and hysteretic curve of each specimen were measured. Combined with a numerical analysis using the finite element method, the variations in the bearing capacity, stiffness degradation, ductility, and energy dissipation capacity of the tested specimens were analyzed. Results showed that all specimens failed in a shear pattern without an obvious failure phenomenon along the vertical joint. The hysteresis curves exhibited an obvious pinch phenomenon and good deformation ability. The seismic behavior decreased in sequence for the shear walls assembled with a cast-in-place vertical joint with a straight, L, or convex shape, while a higher axial compression ratio improved the bearing capacity of the shear walls. The shear wall with an L-shaped vertical joint had similar seismic behavior to that with a straight vertical joint, but the shear wall with a convex vertical joint exhibited a decrease of 8.5% and 10.9% in bearing capacity, 18.2% and 1.2% in ductility, and 13.1% and 20.6% in energy dissipation, respectively, under an axial compression ratio of 0.2 and 0.3. The bearing mechanisms of shear walls with different vertical joints are explained with the numerical analysis of the stress vector maps of concrete and the stress cloud maps of reinforcements at different stress levels. |
| first_indexed | 2024-03-08T20:55:49Z |
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| id | doaj.art-7c0f1ec6084d4857ae205c58788f4b17 |
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| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-08T20:55:49Z |
| publishDate | 2023-12-01 |
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| series | Buildings |
| spelling | doaj.art-7c0f1ec6084d4857ae205c58788f4b172023-12-22T13:58:11ZengMDPI AGBuildings2075-53092023-12-011312301310.3390/buildings13123013Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical JointJunna Yang0Yabin Yang1Lianchao Deng2Baoshan Sun3Zhongjia Gu4Lingxin Zeng5Shunbo Zhao6International Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaHenan Fifth Construction Group, Zhengzhou 450007, ChinaInternational Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaThe seismic performance of prefabricated reinforced concrete shear walls is a key point in the safety of the whole assembly structure under earthquake actions. In this study, six specimens of reinforced concrete shear walls were assembled with a cast-in-place vertical joint with a straight, L, or convex shape. The specimens were tested using a low cyclic loading test under an axial compression ratio of 0.2 or 0.3. The stress process, failure pattern, and hysteretic curve of each specimen were measured. Combined with a numerical analysis using the finite element method, the variations in the bearing capacity, stiffness degradation, ductility, and energy dissipation capacity of the tested specimens were analyzed. Results showed that all specimens failed in a shear pattern without an obvious failure phenomenon along the vertical joint. The hysteresis curves exhibited an obvious pinch phenomenon and good deformation ability. The seismic behavior decreased in sequence for the shear walls assembled with a cast-in-place vertical joint with a straight, L, or convex shape, while a higher axial compression ratio improved the bearing capacity of the shear walls. The shear wall with an L-shaped vertical joint had similar seismic behavior to that with a straight vertical joint, but the shear wall with a convex vertical joint exhibited a decrease of 8.5% and 10.9% in bearing capacity, 18.2% and 1.2% in ductility, and 13.1% and 20.6% in energy dissipation, respectively, under an axial compression ratio of 0.2 and 0.3. The bearing mechanisms of shear walls with different vertical joints are explained with the numerical analysis of the stress vector maps of concrete and the stress cloud maps of reinforcements at different stress levels.https://www.mdpi.com/2075-5309/13/12/3013reinforced concreteprefabricated shear wallvertical jointseismic behavioraxial compressionfinite element analysis |
| spellingShingle | Junna Yang Yabin Yang Lianchao Deng Baoshan Sun Zhongjia Gu Lingxin Zeng Shunbo Zhao Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint Buildings reinforced concrete prefabricated shear wall vertical joint seismic behavior axial compression finite element analysis |
| title | Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint |
| title_full | Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint |
| title_fullStr | Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint |
| title_full_unstemmed | Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint |
| title_short | Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint |
| title_sort | seismic behaviors of prefabricated reinforced concrete shear walls assembled with a cast in place vertical joint |
| topic | reinforced concrete prefabricated shear wall vertical joint seismic behavior axial compression finite element analysis |
| url | https://www.mdpi.com/2075-5309/13/12/3013 |
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