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Design，test and parameter identification of self-centering rebar splices
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Yang LYU1, Qiuhu LI1, 2, Cui DONG1
Journal of Vibration Engineering | 2025, 38(7) : 1548 - 1554
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Journal of Vibration Engineering | 2025, 38(7): 1548-1554
Design，test and parameter identification of self-centering rebar splices
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Yang LYU1, Qiuhu LI1, 2, Cui DONG1
Affiliations
  • 1.Tianjin Key Laboratory of Civil Structure Protection and Reinforcement，Tianjin Chengjian University，Tianjin 300384，China
  • 2.China Contruction Third Bureau First Engineering Co., Ltd., Wuhan 430040，China
Published: 2025-07-10 doi: 10.16385/j.cnki.issn.1004-4523.202304031
Outline
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Post-tensioned prestress，self-centering brace and shape memory alloy （SMA） are the main ways to realize the self-centering of the structures. However，the construction of post-tensioned prestress is complex，the concentrated force generated by self-centering brace may cause joint damage，and the SMA is expensive. The disc springs are preloaded to provide the self-centering force. A self-centering rebar splice is developed to connect the longitudinal rebars in the reinforced concrete structures. The calculation method of the stiffness，preload and effective stroke of the self-centering rebar splice is established. Four rebar splices with different preload force，stiffness and effective stroke are designed and manufactured，and the mechanical properties of the rebar splices are tested. The parameters of the rebar splice adopting the Bouc-Wen model are identified based on particle swarm optimization algorithm. The results show that the self-centering rebar splice has a stable half-flag hysteretic curve and excellent self-centering performance. The Bouc-Wen model can accurately describe the hysteretic characteristics of the rebar splice，and the fitting data are in good agreement with the test data.

self-centering  /  rebar splices  /  pre-loaded disc springs  /  Bouc-Wen model  /  particle swarm algorithm
Yang LYU, Qiuhu LI, Cui DONG. Design，test and parameter identification of self-centering rebar splices[J]. Journal of Vibration Engineering, 2025 , 38 (7) : 1548 -1554 . DOI: 10.16385/j.cnki.issn.1004-4523.202304031
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Year 2025 volume 38 Issue 7
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.202304031
  • Receive Date：2023-04-21
  • Online Date：2026-02-09
  • Published：2025-07-10
Article Data
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History
  • Received：2023-04-21
  • Revised：2023-09-15
Funding
Affiliations
    1.Tianjin Key Laboratory of Civil Structure Protection and Reinforcement，Tianjin Chengjian University，Tianjin 300384，China
    2.China Contruction Third Bureau First Engineering Co., Ltd., Wuhan 430040，China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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