当前位置: X-MOL 学术Earthq. Eng. Eng. Vib. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Study on a conical bearing for acceleration-sensitive equipment
Earthquake Engineering and Engineering Vibration ( IF 2.8 ) Pub Date : 2024-01-24 , DOI: 10.1007/s11803-024-2230-3
Hui Pang , Wen Xu , Junwu Dai , Tao Jiang

Seismic isolation effectively reduces seismic demands on building structures by isolating the superstructure from ground vibrations during earthquakes. However, isolation strategies give less attention to acceleration-sensitive systems or equipment. Meanwhile, as the isolation layer’s displacement grows, the stiffness and frequency of traditional rolling and sliding isolation bearings increases, potentially causing self-centering and resonance concerns. As a result, a new conical pendulum bearing has been selected for acceleration-sensitive equipment to increase self-centering capacity, and additional viscous dampers are incorporated to enhance system damping. Moreover, the theoretical formula for conical pendulum bearings is supplied to analyze the device’s dynamic parameters, and shake table experiments are used to determine the proposed device’s isolation efficiency under various conditions. According to the test results, the newly proposed devices have remarkable isolation performance in terms of minimizing both acceleration and displacement responses. Finally, a numerical model of the isolation system is provided for further research, and the accuracy is demonstrated by the aforementioned experiments.



中文翻译:

加速度敏感设备圆锥轴承的研究

隔震通过将地震期间上部结构与地面振动隔离,有效降低对建筑结构的抗震需求。然而,隔离策略较少关注加速度敏感的系统或设备。同时,随着隔震层位移的增加,传统滚动和滑动隔震轴承的刚度和频率也会增加,可能会引起自定心和共振问题。因此,为加速度敏感设备选择了新型锥形摆轴承,以提高自定心能力,并采用额外的粘性阻尼器来增强系统阻尼。此外,还提供了圆锥摆轴承的理论公式来分析装置的动态参数,并通过振动台实验确定了该装置在各种条件下的隔震效率。根据测试结果,新提出的器件在最小化加速度和位移响应方面具有显着的隔离性能。最后,提供了隔离系统的数值模型以供进一步研究,并通过上述实验证明了其准确性。

更新日期:2024-01-25
down
wechat
bug