考虑土-结构相互作用的核电安全壳结构地震响应分析

吴利华; 蒋迪; 姚迪; 吴杨周; 赵密; 高经纬; 高志懂

doi:10.11899/zzfy20240008

考虑土-结构相互作用的核电安全壳结构地震响应分析

doi: 10.11899/zzfy20240008

吴利华^1,,
蒋迪¹,
姚迪¹,
吴杨周²,
赵密^2, ,,
高经纬¹,
高志懂^{2, 3}

1.
中国核电工程有限公司, 北京 100840
2.
北京工业大学, 城市与工程安全减灾教育部重点实验室, 北京100124
3.
清华大学, 土木水利学院, 北京100084

基金项目: 中国核电工程有限公司自主科研项目（KY22115）

详细信息

作者简介:
吴利华，女，生于1991年。工程师，博士。主要从事核电结构抗震研究。E-mail：wulihua199102@163.com

通讯作者:
赵密，男，生于1980年。教授，博导。主要从事抗震研究。E-mail：zhaomi@bjut.edu.cn

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出版历程
- 收稿日期: 2024-01-08
- 录用日期: 2024-06-05
- 修回日期: 2024-06-03
- 网络出版日期: 2025-04-18
- 刊出日期: 2025-03-30

Study on Seismic Response of Nuclear Containment Structure under Consideration of the Soil-structure Interaction

Wu Lihua^1
,,
Jiang Di¹,
Yao Di¹,
Wu Yangzhou²,
Zhao Mi^{2
, ,},
Gao Jingwei¹,
Gao Zhidong^{2, 3}

1.
China Nuclear Power Engineering Co. Ltd., Beijing 100840, China
2.
Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
3.
School of Civil Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 随着核电适建厂址减少，核电厂址的选择将不可避免地遇到非基岩场地，因此需要研究土-结构相互作用（SSI）对核电结构地震响应的影响。本研究建立了包括核安全壳结构、附属厂房和土体的精细化三维整体有限元模型，采用施加自由场荷载和黏弹性人工边界的波动输入方法，研究了不同频谱特性的地震动作用下SSI效应和附属厂房对核电安全壳结构地震响应的影响。结果表明，相较于基岩场地，考虑SSI效应会增大结构的位移响应，对加速度响应的影响与输入地震动频谱特性相关，对楼面谱峰值附近的频段影响显著。SSI效应显著时，周围附属厂房的存在会增大结构的地震响应。当土体剪切波速大于1500 m/s时，SSI效应对结构地震响应的影响较小。
- 核电安全壳结构 /
- 非基岩场地 /
- 土-结构相互作用 /
- 附属厂房 /
- 抗震分析
Abstract: As the availability of suitable rock sites for nuclear power plants decreases, the selection of non-rock sites has become inevitable, necessitating the consideration of soil-structure interaction (SSI) in seismic analyses. This study develops a refined three-dimensional direct finite element model that incorporates the nuclear containment structure, ancillary structures, and surrounding soil. A wave input method, incorporating free-field loads and a viscous-spring artificial boundary, is employed to analyze seismic responses. The study examines the effects of SSI and structure-soil-structure interaction (SSSI) on the seismic response of nuclear containment structures. The findings indicate that non-rock sites amplify structural displacement responses. The impact of SSI on acceleration responses depends on the frequency content of the input ground motion, with notable effects near the peak of the floor response spectrum. Additionally, when SSI effects are significant, the presence of surrounding ancillary structures increases seismic responses. However, when the site's shear wave velocity exceeds 1500 m/s, the influence of SSI on structural seismic response becomes negligible.
- Nuclear containment structure /
- Non-rock site /
- SSI effect /
- Auxiliary structure /
- Seismic analysis

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图 1 核岛厂房平面图和立面图

Figure 1. Plan and elevation of the nuclear power plant

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图 2 结构有限元模型

Figure 2. Structural finite element model

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图 3 Housner模型示意图

Figure 3. Schematic diagram of the Housner model

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图 4 土-结构整体分析模型

Figure 4. Soil-structure analysis model

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图 5 地震动信息

Figure 5. Earthquake vibration information

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图 6 参考点位置示意图

Figure 6. Schematic diagram of the location of the reference point

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图 7 考虑SSI效应的PFA响应

Figure 7. PFA response considering SSI effects

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图 8 考虑SSI效应的PRFD响应

Figure 8. PRFD response considering SSI effects

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图 9 考虑SSI效应的FRS响应

Figure 9. FRS response considering SSI effects

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图 10 考虑SSI效应对FRS响应影响

Figure 10. Consideration of SSI effects on FRS response impact rates

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图 11 结构PFA和PRFD峰值响应

Figure 11. Structural PFA and PRFD peak response

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图 12 考虑厂房间相互作用影响的结构FRS响应

Figure 12. Structural FRS response considering the effects of interactions between ancillary plant

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图 13 考虑厂房间相互作用对FRS响应影响

Figure 13. Considering the effect of plant interactions on the RFS response

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表 1 地震动信息

Table 1. Earthquake information

编号	年份	地震动记录	台站	PGA/PGV	卓越频率/Hz
L1	1995	Kobe_Japan	Kobe University	0.499	0.83
L2	1999	Kocaeli-Turkey	Yarimca	0.201	0.13
L3	1989	Loma_Prieta	BRAN	0.613	2.25
I1	1987	Whittier Narrows-01	Pasadena-CIT Kresge Lab	1.083	1.44
I2	1985	Nahanni-Canada	Site_1	1.065	1.48
I3	1979	Imperial_Valley-06	Chihuahua	1.088	1.36
H1	1970	Lytle_Creek	Cedar Springs_Allen Ranch	3.237	7.39
H2	1992	Cape_Mendocino	Cape_Mendocino	5.043	8.88
H3	1992	Cape_Mendocino	Rio_Dell_Overpass-FF	2.620	4.58

下载: 导出CSV

表 2 土体信息

Table 2. Soil information

编号	V_S/（m·s⁻¹）	Ρ/（kg·m⁻³）	E/GPa	v
1	900	2300	5.12	0.37
2	1500	2450	14.85	0.35
3	2000	2600	27.22	0.31
4	2400	2700	40.07	0.29

下载: 导出CSV

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