先进光源磁铁支撑基座稳定性的实验研究

李春华; 王梓豪; 周宁闯; 董岚; 王小龙; 屈化民

doi:10.11884/HPLPB202133.200201

先进光源磁铁支撑基座稳定性的实验研究

doi: 10.11884/HPLPB202133.200201

李春华^{1, 2,},
王梓豪^1, ,,
周宁闯¹,
董岚¹,
王小龙¹,
屈化民¹

1.
中国科学院高能物理研究所，北京 100049
2.
中国科学院大学，北京 100049

基金项目: 国家重点研发计划支持项目（2016YFA0402004）

详细信息

作者简介:
李春华（1978—），女，博士，从事加速器精密机械及机械稳定性研究；lichunhua@ihep.ac.cn

通讯作者:
王梓豪（1989—），男，博士，从事加速器精密机械及机械稳定性研究；wangzihao@ihep.ac.cn

中图分类号: TL503
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- 被引次数: 0
出版历程
- 收稿日期: 2020-07-16
- 修回日期: 2020-09-02
- 网络出版日期: 2021-03-30
- 刊出日期: 2021-03-05

Experimental study on magnet support plinths of advanced light source

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 基座作为磁铁支架的基础，其制作工艺以及与地面连接固定方式的不同将影响磁铁与支架的稳定性。基于先进光源对磁铁支撑系统稳定性的极高要求，开展了基座安装浇筑实验，选取工程上常用的几种混凝土施工工艺，制作统一外形尺寸的实验件，通过锤击法逐一测试其固有频率，评估其稳定性，得到二次灌浆可有效提高稳定性、环氧基灌浆料获得的稳定性优于水泥基灌浆料等结论。基于固有频率测试结果，以HEPS支撑系统为例分析了不同的基座安装方式对系统模态的影响。
- 同步辐射光源 /
- 磁铁支撑 /
- 基座 /
- 模态 /
- 稳定性
Abstract: As the installation foundation of magnet support, the plinth is critical for the stability of the whole support unit. Different fabrication and installation processes of plinths make significant differences in performance of the support unit. Based on the stringent requirements of advanced synchrotron light source for the mechanical stability of magnets, the plinth installation pouring experiment was carried out. Several concrete construction techniques commonly applied in practice were tested with the plinths of uniform shape and size. The natural frequency of each plinth was measured by hammering method and its stability was evaluated. It is concluded from the test result that secondary grouting can effectively improve the stability of the plinth and the plinth of epoxy-based grouting shows better performance in stability than that of cement-based grouting. Based on the natural frequency test result, the influence of the plinth installation on the system mode is analyzed with the support system of High Energy Photon Source as an example. The experimental results have certain reference value for the plinth design of similar machines.
- synchrotron light source /
- magnet support /
- plinth /
- modal testing /
- stability

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图 1 测试系统构成

Figure 1. Test system composition

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图 2 基座安装截面示意图

Figure 2. Schematic diagrams of the plinth installed

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图 3 基座实验件的布置

Figure 3. Layout of the experimental plinths

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图 4 基座仿真模态

Figure 4. Modal simulation of the plinths

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图 5 基座激振点与测振点分布

Figure 5. Layout of the hammer points and sensor points on the plinth

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图 6 固有频率测试结果

Figure 6. Test result of natural frequency

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图 7 阻尼比测试结果

Figure 7. Test result of damping ratio

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图 8 支撑系统样机模型

Figure 8. Support system prototype model

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图 9 支撑系统样机模型振型图

Figure 9. Vibration diagram of support system prototype model

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图 10 支撑系统固有频率变化趋势

Figure 10. Trend of natural frequencies of support systems

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表 1 基座对支撑系统稳定性的影响

Table 1. Effect of the plinth on the stability of the support system

description f₁ of plinth/Hz equivalent E /MPa f₁ of system/Hz

no grouting 102 65 40
concrete pouring 231 350 62
CGM grouting 309 700 67
EGM grouting 420 1500 70

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参考文献(13)

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