建筑钢结构进展2026，Vol.28Issue(5)：11-19,106,10.DOI:10.13969/j.jzgjgjz.20241028004
新型跨座式单轨减隔震支座滞回性能研究
Hysteretic Performance of a Novel Isolation Bearing for Straddle-Type Monorails
摘要
Abstract
The straddle-type monorail system may experience significant lateral deformation under limit states,which has been relatively less studied in the past.A novel isolation bearing for straddle-type monorails integrating a full section yield damper and a lead rubber bearing,is proposed in this study.Low-cyclic reversed loading tests were conducted under various compressive stresses and loading frequencies and the results were compared with numerical simulations.This paper focuses on the synergistic energy dissipation mechanism between full-section yield damper and lead rubber bearing and the influence of compressive stress and loading frequency on the equivalent stiffness,equivalent damping ratio and cumulative hysteretic energy dissipation of the bearing.The results show that this bearing has multi-stage energy dissipation characteristics,and a secondary stiffness hardening is realized during the loading process,providing yield reserve stiffness for the structure under limit states.The change of compressive stress is directly proportional to the change of the equivalent stiffness and energy dissipation capacity.When the compressive stress exceeds 2.5σ0(σ0=2.12 MPa),the growth rates of the equivalent stiffness and damping ratio of the bearing decrease.The increase of loading frequency has a minimal impact on the equivalent stiffness,equivalent damping ratio and cumulative hysteretic energy dissipation of the bearing.The results of numerical simulation are in good agreement with the test results,which can provide technical support for the promotion and application of this bearing.关键词
跨座式单轨系统/减隔震支座/协同耗能机理/屈服储备刚度/低周往复加载/滞回性能/有限元分析Key words
straddle-type monorail system/isolation bearing/synergistic energy dissipation mechanism/yield reserve stiffness/low-cyclic reversed loading/hysteretic performance/finite element analysis分类
交通工程引用本文复制引用
张建港,朱立华,王浩楠,李昊..新型跨座式单轨减隔震支座滞回性能研究[J].建筑钢结构进展,2026,28(5):11-19,106,10.基金项目
海岸和近海工程国家重点实验室开放基金(LP2123),河北省高等学校科学技术研究项目(QN2023133) （LP2123）
