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Utilization of reduction of relative displacement of base isolation device by control of coefficient of friction

通过控制摩擦系数来减少底座隔震装置的相对位移

基本信息

批准号：
18560227
负责人：
SHINTANI Masanori
金额：
$ 1.33万
依托单位：
University of Fukui
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

The purpose of this research shows clearly that relative displacement is reduced by an analysis model by controlling a coefficient of friction and frictional force in a base isolation device, without enlarging response acceleration. The coefficient of friction and the angle of frictional slope are designed by the analysis model, an experimental device is manufactured. Real seismic waves are inputted to the experimental device using seismic waves reappearance equipment in University of Fukui. The validity of the base isolation device is clarified experimentally. Furthermore, the analysis model of the experimental device is built. The results in simulation analysis are compared with the experimental results.By the relation between the values of the spring constant and mass, the value of the spring constant and the value of mass of the base isolation device that is set to 0.25Hz are determined. The method of change of the coefficient of friction of the surface of the friction side as the experiment which reduces response displacement is conducted by changing into two steps (μ=0.03,0.08). The results in simulation analysis are compared with the experimental results. The validity of this analysis model is examined. Furthermore, the base isolation device to which frictional force is changing in connection with the magnitude of relative displacement using a frictional slope is manufactured. The performance of the base isolation device by real seismic waves is verified by the analysis model. The results in simulation analysis are compared with the experimental results.The validity about the response displacement reduction of these base isolation devices are shown. The important results which advance utilization of the base isolation device are obtained.

本研究的目的清楚地表明，通过控制基础隔震装置中的摩擦系数和摩擦力，通过分析模型减小相对位移，而不增大响应加速度。根据分析模型设计了摩擦系数和摩擦坡角，制作了实验装置。福井大学的地震波再现装置将真实的地震波输入实验装置。通过实验验证了基础隔震装置的有效性。建立了实验装置的分析模型。将仿真分析结果与试验结果进行了对比，根据弹簧常数与质量的关系，确定了基础隔震装置的弹簧常数和质量的取值，即设置为0.25Hz。作为减小响应位移的实验，改变摩擦面表面摩擦系数的方法分两步进行（μ= 0.03，0.08）。仿真分析结果与实验结果进行了比较。检验了该分析模型的有效性。此外，制造了摩擦力利用摩擦斜面与相对位移的大小相关地变化的基础隔震装置。通过分析模型验证了基础隔震装置在真实的地震波作用下的性能。将仿真分析结果与试验结果进行了比较，验证了基础隔震装置减小地震反应位移的有效性。研究结果对基础隔震装置的推广应用具有重要意义。