土木工程与管理学报2026，Vol.43Issue(3)：7-16,36,11.DOI:10.13579/j.cnki.2095-0985.2026.20250409
铅-U型环金属阻尼器分级耗能机制与抗震性能研究
Investigation of Graded Energy Dissipation Mechanism and Seismic Performance of Lead and U-shaped Metal Damper
摘要
Abstract
This paper proposes a novel lead and U-shaped metal damper(LUD),which utilizes the synergistic interaction of lead blocks and U-shaped rings to achieve graded energy dissipation under multi-level seismic excitations.The lead blocks provide stable energy dissipation at small deformation stages,while the U-shaped rings primarily dissipate energy at large deformation stages.The force-de-formation skeleton curve and a two-stage hysteretic model for the LUD damper are established.A re-fined finite element model is developed in ABAQUS to validate the accuracy of the theoretical model.Furthermore,an analysis of the mechanical performance differences between the lead blocks and U-shaped rings is conducted,revealing their energy dissipation characteristics at different deformation stages.Finally,through dynamic response analysis of a five-story frame structure equipped with the LUD damper under frequent,design-basis,and rare earthquake intensities,the effectiveness of the damper in mitigating seismic responses under multi-level earthquakes and the applicability of its di-verse installation configurations are verified.关键词
金属阻尼器/分级耗能/消能减震/U型环/铅块Key words
metal damper/graded energy dissipation/energy dissipation and vibration damping/U-shaped ring/lead block分类
建筑与水利引用本文复制引用
刘洋,王沛源,周方圆..铅-U型环金属阻尼器分级耗能机制与抗震性能研究[J].土木工程与管理学报,2026,43(3):7-16,36,11.基金项目
国家自然科学基金(52178288) （52178288）
