地震研究

针对核电设备设计研制了三维隔震支座,以核电设备常用的电机为例,对其三维隔震性能开展了振动台试验研究,获得了电机设备典型部位的隔震动力响应,通过对比振动台台面数据与设备测点位置的数据来验证隔震支座的隔震效果。结果表明:随着输入地震动峰值增大,隔震支座的隔震效率差别微小,隔震效果比较稳定,说明隔震支座对电机设备起到了良好的隔震作用。

A three-dimensional seismic isolation bearing is designed for the nuclear power equipment.Taking the commonly used motor of nuclear power equipment as an example,we carried out a shaking table test to investigate the performance of three-dimensional seismic isolation of the motor and to obtain the seismic dynamic response of typical parts of the equipment.By comparing the data of the shaking table with the data of the measuring points on the equipment,we confirmed the effect of the seismic isolation bearing.The results show that with the increase of the peak value of the input ground motion,the difference in the isolation efficiency of the isolation bearing is small,and the isolation effect is relatively stable,indicating that the isolation bearing plays a good role in isolating the motor equipment.

引言
1 三维隔震支座
2 试验概况
3 试验结果及分析
4 结论

图1 隔震支座设计图<br/>Fig.1 Design diagram of the seismic isolation bearing

图1 隔震支座设计图
Fig.1 Design diagram of the seismic isolation bearing

表1 隔震支座材料尺寸<br/>Tab.1 Size of the spare parts of the seismic isolation bearing

表1 隔震支座材料尺寸
Tab.1 Size of the spare parts of the seismic isolation bearing

表2 地震模拟振动台技术指标<br/>Tab.2 Technical indexes of the seismic shaking table

表2 地震模拟振动台技术指标
Tab.2 Technical indexes of the seismic shaking table

图2 试验模型整体示意图<br/>Fig.2 The testing model's overall picture

图2 试验模型整体示意图
Fig.2 The testing model's overall picture

图3 试验模型测点布置方案<br/>Fig.3 Measuring points of the testing model

图3 试验模型测点布置方案
Fig.3 Measuring points of the testing model

表3 振动台试验加载工况<br/>Tab.3 Loading conditions of the shaking table test

表3 振动台试验加载工况
Tab.3 Loading conditions of the shaking table test

图4 四川飞仙台记录的(a)和人工合成(b)地震动时程曲线<br/>Fig.4 Time-history curves of the ground motion recorded by Feixian station inSichuan(a)and the artificial ground motion(b)

图4 四川飞仙台记录的(a)和人工合成(b)地震动时程曲线
Fig.4 Time-history curves of the ground motion recorded by Feixian station inSichuan(a)and the artificial ground motion(b)

图5 人工合成地震动(a)和电机设备加速度响应(b)的傅立叶谱<br/>Fig.5 Fourier spectra of the artificial ground motion(a)and the motor equipment(b)

图5 人工合成地震动(a)和电机设备加速度响应(b)的傅立叶谱
Fig.5 Fourier spectra of the artificial ground motion(a)and the motor equipment(b)

图6 测点1、2 的X(a)、Y(b)、Z方向(c)加速度对比图<br/>Fig.6 Comparison of the accelerations at Point 1 and Point 2 in X direction(a),Y direction(b),and Z direction(c)

图6 测点1、2 的X(a)、Y(b)、Z方向(c)加速度对比图
Fig.6 Comparison of the accelerations at Point 1 and Point 2 in X direction(a),Y direction(b),and Z direction(c)

表4 隔震支座的隔震效率<br/>Tab.4 Efficiency of the seismic isolation bearing

表4 隔震支座的隔震效率
Tab.4 Efficiency of the seismic isolation bearing

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备注

引言

1 三维隔震支座

2 试验概况

3 试验结果及分析

4 结论

期刊信息