隔震装置阻尼机构的参数设计与振动台试验  

Parameter design and shaking table test of a damping mechanism in the isolation device

作　　者：赵守江[1] ZHAO Shou-jiang(The Palace Museum,Beijing 100009,China)

机构地区：[1]故宫博物院,北京100009

出　　处：《振动工程学报》2024年第1期148-155,共8页Journal of Vibration Engineering

基　　金：国家重点研发计划项目(2019YFC1521000);故宫博物院科研项目(KTYXD2016-15)。

摘　　要：为了改善浮放物体隔震装置中阻尼力的施加方式,研制出一款阻尼机构。对其构造和工作机理进行阐述,推导出了它的力学特征表达式,并验证了分析模型的准确性。结合某文物隔震装置的目标性能,利用数值方法对阻尼机构的参数进行设计,并对比振动台试验。结果表明:该阻尼机构结构简单,性能稳定;经阻尼参数优化后的隔震装置在满足位移限值的情况下达到了设定的隔震目标;试验与数值分析结果相吻合,证明了阻尼机构参数设计的正确性,同时也检验了隔震装置的安装和运行质量。其中,试验与数值分析结果的吻合程度,尤其是位移时程曲线的吻合程度,可为浮放物体隔震装置的方案对比和质量评估提供思路。In order to improve the application of the damping force of isolation device for free-standing objects,a new damping mechanism is developed.Its structure and working mechanism are expounded,and its mechanical characteristic is deduced and veri-fied.Combined with the target performance of an isolation device for cultural relics,the parameters of the damping mechanism are designed by numerical method,and contrasted with the shaking table test.The results indicate that the damping mechanism has a simple structure and stable performance.The isolation device optimized by damping parameters achieves the set isolation target un-der the premise of meeting the displacement limit.The test results are highly consistent with the numerical analysis results,which not only prove the correctness of the damping design,but also verifies the installation quality and operation effect of the isolation de-vice.In addition,the coincidence degree between two results can provide a new method for design comparison and quality evalua-tion of the isolation device,especially the coincidence degree of relative displacement curves.

关 键 词：隔震装置 阻尼机构 数值分析 振动台试验 丝杠 浮放物体 

分 类 号：TU352.12[建筑科学—结构工程] TH122[机械工程—机械设计及理论]