Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification
As a critical component of lifeline engineering, bridges play a vital role in post-earthquake rescue and disaster relief efforts. The rapid repair of earthquake-damaged piers is essential to ensure the uninterrupted functionality of lifeline systems. This paper presents a novel method for the rapid...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/1/81 |
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| author | Xiuli Xu Lingxin Yan Han Wu Xu Chen Shenpeng Xu Xuehong Li |
| author_facet | Xiuli Xu Lingxin Yan Han Wu Xu Chen Shenpeng Xu Xuehong Li |
| author_sort | Xiuli Xu |
| collection | DOAJ |
| description | As a critical component of lifeline engineering, bridges play a vital role in post-earthquake rescue and disaster relief efforts. The rapid repair of earthquake-damaged piers is essential to ensure the uninterrupted functionality of lifeline systems. This paper presents a novel method for the rapid repair of earthquake-damaged pier columns using steel sleeves, based on a multi-level fortification approach, integrating numerical simulation, structural design, and experimental research. In alignment with the multi-level fortification requirements, the structural form of the outer steel sleeves was designed, key influencing factors were analyzed, and a design scheme for the outer steel sleeve was proposed. Furthermore, a quasi-static test was conducted to evaluate the seismic performance of the pier columns before and after repair. The results indicate that the maximum horizontal load the pier can withstand after repair is approximately 40% higher than that before the damage. When the pier’s bearing capacity reaches its maximum value, the horizontal displacement increases from 29.15 mm to 95.65 mm, indicating a significant improvement in the seismic performance of the repaired pier. Failure initiates with the buckling of the brace, followed by the buckling of the steel sleeves, demonstrating a multi-stage failure mode. This mode satisfies the requirements of multi-level fortification, with enhanced ductility achieved while maintaining the pier column’s bearing capacity, thereby enhancing the protection of the foundation. |
| format | Article |
| id | doaj-art-1e54286f268b462881dea715f8e24bed |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-1e54286f268b462881dea715f8e24bed2025-01-10T13:15:59ZengMDPI AGBuildings2075-53092024-12-011518110.3390/buildings15010081Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level FortificationXiuli Xu0Lingxin Yan1Han Wu2Xu Chen3Shenpeng Xu4Xuehong Li5College of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaAs a critical component of lifeline engineering, bridges play a vital role in post-earthquake rescue and disaster relief efforts. The rapid repair of earthquake-damaged piers is essential to ensure the uninterrupted functionality of lifeline systems. This paper presents a novel method for the rapid repair of earthquake-damaged pier columns using steel sleeves, based on a multi-level fortification approach, integrating numerical simulation, structural design, and experimental research. In alignment with the multi-level fortification requirements, the structural form of the outer steel sleeves was designed, key influencing factors were analyzed, and a design scheme for the outer steel sleeve was proposed. Furthermore, a quasi-static test was conducted to evaluate the seismic performance of the pier columns before and after repair. The results indicate that the maximum horizontal load the pier can withstand after repair is approximately 40% higher than that before the damage. When the pier’s bearing capacity reaches its maximum value, the horizontal displacement increases from 29.15 mm to 95.65 mm, indicating a significant improvement in the seismic performance of the repaired pier. Failure initiates with the buckling of the brace, followed by the buckling of the steel sleeves, demonstrating a multi-stage failure mode. This mode satisfies the requirements of multi-level fortification, with enhanced ductility achieved while maintaining the pier column’s bearing capacity, thereby enhancing the protection of the foundation.https://www.mdpi.com/2075-5309/15/1/81earthquake-damaged bridge piersquick fixouter steel jacketpseudo-static testbearing capacitymulti-level fortification |
| spellingShingle | Xiuli Xu Lingxin Yan Han Wu Xu Chen Shenpeng Xu Xuehong Li Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification Buildings earthquake-damaged bridge piers quick fix outer steel jacket pseudo-static test bearing capacity multi-level fortification |
| title | Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification |
| title_full | Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification |
| title_fullStr | Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification |
| title_full_unstemmed | Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification |
| title_short | Study on Rapid Repair Method of Earthquake Damaged Pier Column Based on Multi-Level Fortification |
| title_sort | study on rapid repair method of earthquake damaged pier column based on multi level fortification |
| topic | earthquake-damaged bridge piers quick fix outer steel jacket pseudo-static test bearing capacity multi-level fortification |
| url | https://www.mdpi.com/2075-5309/15/1/81 |
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