[1] XIE Wen, BAO Yangyang, TIE Ning, HONG Yangfan, et al. Sensitivity analysis of parameters influencing ED and self-centering capacity in self-centering bridge bents with ED beams using validated numerical model [J]. Journal of Southeast University (English Edition), 2025, 41 (3): 338-347. [doi:10.3969/j.issn.1003-7985.2025.03.009]
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Sensitivity analysis of parameters influencing ED and self-centering capacity in self-centering bridge bents with ED beams using validated numerical model(
)
采用验证数值模型的耗能连梁-自复位双柱式桥墩耗能与自复位性能的参数敏感性分析
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 41
- Issue:
- 2025 3
- Page:
- 338-347
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2025-09-11
Info
- Title:
- Sensitivity analysis of parameters influencing ED and self-centering capacity in self-centering bridge bents with ED beams using validated numerical model
- 采用验证数值模型的耗能连梁-自复位双柱式桥墩耗能与自复位性能的参数敏感性分析
- Author(s):
- XIE Wen, BAO Yangyang, TIE Ning, HONG Yangfan
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China
- Keywords:
- self-centering bridge bents; energy-dissipation beams; energy dissipation; self-centering capacity; quasi-static test; numerical validation
- PACS:
- U448.34
- DOI:
- 10.3969/j.issn.1003-7985.2025.03.009
- Abstract:
- A self-centering bridge bent equipped with energy-dissipation (ED) beams is proposed. Quasi-static tests are conducted on self-centering bridge bents, both with and without ED beams, to validate the accuracy of the corresponding numerical models. The effects of various parameters, such as the web area of ED beams, prestressing force of tendons, tendon arrangements, and number of column segments, on the seismic performance of self-centering bridge bents with ED beams are evaluated using the validated numerical model. The results demonstrate that the numerical models accurately replicate the quasi-static test results, with average errors in the lateral force remaining below 9.6%. The web area of ED beams significantly affects the strength, cumulative energy dissipation, and relative self-centering index (RSI) of the self-centering bridge bents. Increasing the prestressing force enhances the lateral force and self-centering capability of the bridge bents but has minimal effect on their ED capacity. Reducing the number of segments in each column enhances the lateral force and cumulative hysteretic energy dissipation of the self-centering bridge bents while exerting an insignificant effect on the RSI. Thus, the proposed novel system is highly suitable for double- or multicolumn piers supporting bridges in regions prone to strong earthquakes.
- 提出了一种耗能连梁-自复位双柱式桥墩体系，对自复位双柱式桥墩和消能连梁-自复位双柱式桥墩开展拟静力试验，试验结果验证了其数值模型的准确性。采用验证的数值模型评估了耗能连梁腹板面积、预应力筋的预应力大小与布置方式以及预制节段数量等设计参数对耗能连梁-自复位双柱式桥墩抗震性能的影响。结果表明，数值模型能够准确地复现拟静力试验结果，其侧向力的平均误差控制在9.6%以下；耗能连梁腹板面积显著影响桥墩的侧向力、累积耗能以及相对自复位指数；提高预应力能够增强桥墩的侧向力和自复位能力，但对耗能性能的影响不大；减少节段数量会增加桥墩的侧向力和累积耗能，但对相对自复位指数的影响不明显。因此，所提新型桥墩体系可很好地应用于强震区双柱或多柱式桥墩。
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Memo
- Memo:
-
Received 2024-12-15,Revised 2024-12-30.
Biography: Xie Wen (1981—), male, doctor, professor, xiewen@nbu. edu.cn.
Foundation items:The National Natural Science Foundation of China (No. 52278189), Zhejiang Provincial Natural Science Foundation of China (No. LY24E080002).
Citation:XIE Wen,BAO Yangyang,TIE Ning,et al.Sensitivity analysis of parameters influencing ED and self-centering capacity in self-centering bridge bents with ED beams using validated numerical model[J].Journal of Southeast University (English Edition),2025,41(3):338-347.DOI:10.3969/j.issn.1003-7985.2025.03.009.DOI:10.3969/j.issn.1003-7985.2025.03.009