| 低屈服点钢剪切板阻尼器滞回性能试验研究 |
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| 引用本文： | 宋中霜,;李冀龙,;韩露,;李惠,;欧进萍.低屈服点钢剪切板阻尼器滞回性能试验研究[J].地震学刊,2014(3):289-295. |
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| 作者姓名： | 宋中霜 ;李冀龙 ;韩露 ;李惠 ;欧进萍 |
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| 作者单位： | [1]哈尔滨工业大学土木工程学院,哈尔滨150090; [2]结构工程灾变与控制教育部重点实验室哈尔滨工业大学,哈尔滨150090; [3]加利福尼亚大学环境工程系,太平洋地震工程研究中心,Berkeley,CA,94720; [4]郑州交通职业学院建筑工程系,郑州450000 |
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| 基金项目： | 国家自然科学基金面上项目（51078118）资助 |
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| 摘 要： | 为改善传统滞变型阻尼器在小振动变形时不明显的耗能效果,利用国产低屈服点钢设计了5个剪切板阻尼器（LYPSSP）,并对其进行低周往复循环荷载试验,重点考察阻尼器核心板连接方式、高厚比、十字加劲肋对其滞回性能的影响。研究结果表明：核心板与翼缘板通过熔透焊缝连接与螺栓连接相比,构造简单、可靠度高且易加工;由国产低屈服点钢制作的剪切板阻尼器滞回曲线饱满,耗能性能好,在同一位移级别下循环的滞回曲线基本上重合,稳定性好,并且在整个循环加载过程中,强化现象非常明显,破坏之前也没有出现强度和刚度的突然改变;以P/Py为设计目标时,核心板高厚比越小、面外屈曲越小,滞回曲线就越饱满,耗能性能就越好;根据等效粘滞阻尼器系数和平均耗能指数,能够对阻尼器的耗能性能很好地做出评价。
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| 关 键 词： | 低屈服点钢 剪切板阻尼器 低周往复循环加载 滞回性能 |
Experimental Study on Hysteretic Behavior of Shear Panel Dampers Made of Steel with Low Yield Point |
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| Institution: | SONG Zhong-shuang , LI Ji-long , HAN Lu, LI Hui , OU Jin-ping (1. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. Key Lab of Structures Dynamic Behavior and Control, Ministry of Education (Harbin Institute of Technology), Harbin 150090, China; 3. Department of Civil and Environmental Engineering, Pacific Earthquake Engineering Research Center (PEER), University of California, Berkeley, CA, 94720, USA; 4. Construction Engineering Department, Zhengzhou Jiaotong Vocational College, Zhengzhou 450000, China) |
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| Abstract: | To improve the not obvious performance of energy dissipation of residual hysteretic dampers in the condition of small vibration deformation, five shear panel dampers made of domestic low yield point steel （LYPSSP） were designed, and low reversed cyclic tests were carried out to investigate the hysteretic behavior, in which the effects of core panels＇ connection, widththickness ratio, cross stiffeners were considered. The study shows that penetration weld connection of core panels versus flanges is more simple structure, higher reliability and easier to process, when compared to bolted connection; the dampers have full hysterical curves, perfect energy dissipation behavior, and great stability because of the similarity of hysterical curves in the same loading levels, and very obvious phenomenon of hardening in the process of cyclical loading, and dampers＇ strength and stiffness have no sudden change before failure; when taking P/Py as the design goals, the smaller the widththickness ratio of core panels and out-plane buckling, the more full the hysterical curves and the better the energy dissipation behavior will be; the equivalent viscous damping coefficient and average energy-dissipating coefficient can give the accurate judgment to the behavior of energy dissipation of dampers. |
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| Keywords: | low yield point steel shear panel dampers the low reversed cyclic tests hysteretic behavior |
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