Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers
Compared to conventional reinforced concrete (RC) piers, self-centering rocking piers exhibit better seismic resilience and sustain minor damage. However, their construction typically relies on prefabrication. Moving large, prefabricated components can be challenging in mountainous areas with limite...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2075-5309/15/2/267 |
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| author | Wei Lu Yu Zou Xingyu Luo Jun Song Haiqing Li |
| author_facet | Wei Lu Yu Zou Xingyu Luo Jun Song Haiqing Li |
| author_sort | Wei Lu |
| collection | DOAJ |
| description | Compared to conventional reinforced concrete (RC) piers, self-centering rocking piers exhibit better seismic resilience and sustain minor damage. However, their construction typically relies on prefabrication. Moving large, prefabricated components can be challenging in mountainous areas with limited transportation access. Therefore, using concrete-filled steel tube (CFST) piers is a practical alternative. The steel tube both serves as a construction permanent formwork and enhances the compressive performance of concrete through confinement effects. To apply CFST self-centering rocking piers in mountainous regions with high seismic intensity, a fast construction system was designed and a 1:4 scale specimen was developed for testing. Lateral cyclic loading tests revealed that the specimen exhibited good deformation and self-centering capabilities, with a residual drift ratio of only 0.17% at a drift ratio of 7.7%. Most of the horizontal displacement was contributed through a rocking gap opening, resulting in minimal damage to the pier itself. The damage was concentrated primarily in the energy-dissipating rebars, while the prestress strands remained elastic, though prestress loss was observed. |
| format | Article |
| id | doaj-art-16caa573a91d4c72a4c5ff6ae64d77d3 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj-art-16caa573a91d4c72a4c5ff6ae64d77d32025-01-24T13:26:24ZengMDPI AGBuildings2075-53092025-01-0115226710.3390/buildings15020267Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge PiersWei Lu0Yu Zou1Xingyu Luo2Jun Song3Haiqing Li4Sichuan Road & Bridge Group Co., Ltd., Chengdu 610041, ChinaSichuan Road & Bridge Group Co., Ltd., Chengdu 610041, ChinaDepartment of Bridge Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Bridge Engineering, Tongji University, Shanghai 200092, ChinaSichuan Road & Bridge Group Co., Ltd., Chengdu 610041, ChinaCompared to conventional reinforced concrete (RC) piers, self-centering rocking piers exhibit better seismic resilience and sustain minor damage. However, their construction typically relies on prefabrication. Moving large, prefabricated components can be challenging in mountainous areas with limited transportation access. Therefore, using concrete-filled steel tube (CFST) piers is a practical alternative. The steel tube both serves as a construction permanent formwork and enhances the compressive performance of concrete through confinement effects. To apply CFST self-centering rocking piers in mountainous regions with high seismic intensity, a fast construction system was designed and a 1:4 scale specimen was developed for testing. Lateral cyclic loading tests revealed that the specimen exhibited good deformation and self-centering capabilities, with a residual drift ratio of only 0.17% at a drift ratio of 7.7%. Most of the horizontal displacement was contributed through a rocking gap opening, resulting in minimal damage to the pier itself. The damage was concentrated primarily in the energy-dissipating rebars, while the prestress strands remained elastic, though prestress loss was observed.https://www.mdpi.com/2075-5309/15/2/267CFST self-centering rocking bridge piersseismic behaviorseismic resilienceexperimental study |
| spellingShingle | Wei Lu Yu Zou Xingyu Luo Jun Song Haiqing Li Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers Buildings CFST self-centering rocking bridge piers seismic behavior seismic resilience experimental study |
| title | Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers |
| title_full | Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers |
| title_fullStr | Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers |
| title_full_unstemmed | Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers |
| title_short | Experimental Study on the Seismic Behavior of CFST Self-Centering Rocking Bridge Piers |
| title_sort | experimental study on the seismic behavior of cfst self centering rocking bridge piers |
| topic | CFST self-centering rocking bridge piers seismic behavior seismic resilience experimental study |
| url | https://www.mdpi.com/2075-5309/15/2/267 |
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