核电厂非安全级与安全级管道物项地震交互作用研究

俞向文; 徐刚; 张亮; 刘杰; 段林烨; 范霁康

doi:10.11899/zzfy20230265

核电厂非安全级与安全级管道物项地震交互作用研究

doi: 10.11899/zzfy20230265

俞向文^1,,
徐刚¹,
张亮¹,
刘杰¹,
段林烨²,
范霁康^2, ,

1.
上海核工程研究设计院有限公司, 上海 200233
2.
南京理工大学，材料科学与工程学院, 南京 210094

基金项目: 国家科技重大专项课题（2018ZX06001001）；上海核工程研究设计院有限公司技术产业项目（22FW1087）

详细信息

作者简介:
俞向文，男，生于1988年。工程师。主要从事核电厂工艺系统与布置相关的研究。E-mail：yuxw@snerdi.com.cn

通讯作者:
范霁康，男，生于1988年。副研究员，硕士生导师。主要从事材料冲击、金属材料焊接方面的研究。E-mail：fanjk@njust.edu.cn

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- 文章访问数: 12
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- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2023-12-04
- 录用日期: 2024-06-27
- 修回日期: 2024-05-20
- 网络出版日期: 2025-04-18
- 刊出日期: 2025-03-30

Study on Seismic Interaction of Non-safety and Safety Pipeline Items in Nuclear Power Plants

1.
Shanghai Nuclear Engineering Research & Design Institute Co., Ltd., Shanghai 200233, China
2.
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

摘要

摘要: 为评估地震灾害中核电厂非安全级管道物项跌落对安全级管道物项的交互作用影响，采用模拟仿真分析与试验验证相结合的方法对管道物项间的冲击过程进行研究。本文建立了管道冲击有限元仿真模型，采用ABAQUS有限元分析软件对核电厂常用安全级管道进行冲击仿真，将管道内截面通流面积减小至50%～55%作为损伤极限，得到不同高度下的冲击极限质量，并采用冲击试验对模拟仿真结果进行验证。研究结果表明，当管道型号规格一定时，其损伤极限主要取决于下落物体的能量，受到高度的影响较小；进行核电厂安全级管道设计布局时，应保证挂在上方的非安全级管道冲击能量小于其能够承受的极限能量。
- 核电厂 /
- 地震交互作用 /
- 管道物项 /
- 模拟仿真 /
- 冲击能量
Abstract: To assess the interaction effects of non-safety pipeline components falling onto safety-grade pipelines in nuclear power plants during an earthquake, this study investigates the impact process through a combination of simulation analysis and experimental validation. A finite element model of pipeline impact is developed, and impact simulations of common safety-level nuclear power pipelines are conducted using ABAQUS software. The damage threshold is defined as a reduction of 50%~55% in the cross-sectional flow area, and the critical impact mass at different heights is determined. The simulation results are validated through impact tests, confirming that for a given pipeline model, the damage threshold is primarily governed by the energy of the falling object, with only a minor influence from height. These findings highlight the importance of ensuring that the impact energy from non-safety pipelines suspended above safety-grade pipelines remains below the structural energy tolerance during the design and layout of nuclear power plant piping systems.
- Nuclear power plants /
- Seismic interaction /
- Pipeline items /
- Simulation /
- Impact energy

HTML全文

图 1 不同应变速率下的应力-应变关系曲线

Figure 1. Stress-strain curves at different strain rates

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图 2 管道冲击模型

Figure 2. Impact model of pipelines

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图 3 管道网格划分

Figure 3. Meshing of pipelines

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图 4 冲击试验台架

Figure 4. Impact test bench

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图 5 不同时间点管道冲击变形应力云图

Figure 5. Impact deformation and stress nephograms of pipelines at different times

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图 6 管道变形横截面轮廓

Figure 6. Cross sectional profile of pipeline deformation

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图 7 管道冲击变形情况

Figure 7. Impact deformation of the pipeline

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图 8 不同高度极限冲击质量下DN100-S40管道应力云图

Figure 8. Stress clouds of DN100-S40 pipes at different heights of ultimate impact mass

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图 9 不同型号管道极限冲击质量与高度关系曲线

Figure 9. Relationship between ultimate impact mass and height of different types of pipelines

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表 1 仿真与试验结果对比

Table 1. Comparison of simulation and test results

尺寸类型	仿真	试验
最小宽度/mm	27.17	28.60
最大宽度/mm	78.91	78.22
通流面积/%	52.6	53.5

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表 2 DN100-S40管道变形

Table 2. Deformation data of DN100-S40 pipeline

锤头高度/m	锤头质量/kg	变形后高度/mm	变形后宽度/mm	内截面面积比/%
2	850	43.64	156.68	52.49
4	425	45.17	155.90	53.36
6	284	45.74	155.61	54.04
8	213	46.18	155.36	54.58
10	175	45.35	155.84	53.57

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表 3 不同型号管道承受的极限能量

Table 3. Ultimate energy withstood by different types of pipelines

管道规格	极限能量/J
管道规格	2 m	4 m	6 m	8 m	10 m
DN10	353	353	353	353	343
DN50	3 822	3 802	3 763	3 763	3 724
DN80	7 938	7 840	7 820	7 840	7 840
DN100	16 660	16 660	16 699	16 699	17 150
DN150	23 520	23 520	23 520	24 304	24 500
DN300	78 400	86 240	85 848	86 240	86 240
注：计算时，取g=9.8 m/s²。

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表 4 不同型号管道拟合结果

Table 4. Fitting data of different types of pipelines

圆管类型	W/(N·m)	δ	R²
DN10-S40	392	0.008	0.992 3
DN50-S40	3 824	0.110	0.997 8
DN80-S40	7 928	0.170	0.995 8
DN100-S40	16 635	−0.320	0.994 3
DN150-S40	23 448	−0.980	0.998 8
DN300-S40	79 168	−158.000	0.996 5

下载: 导出CSV

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