地基土-反应堆厂房-核电辅助厂房结构相互作用体系地震响应分析

王波; 陈少林; 高雷; 唐晖

doi:10.11899/zzfy20220405

地基土-反应堆厂房-核电辅助厂房结构相互作用体系地震响应分析

doi: 10.11899/zzfy20220405

王波^1,,
陈少林^1, ,,
高雷¹,
唐晖²

1.
南京航空航天大学, 土木与机场工程系, 南京 211106
2.
环境保护部核与辐射安全中心, 北京 100101

基金项目: 国家自然科学基金（51978337、U2039209）；华龙一号及在役核电机组关键技术装备攻关工程项目（2003-105）

详细信息

作者简介:
王波，男，生于1995年。硕士。主要从事地震工程研究。E-mail：814799207@qq.com

通讯作者:
陈少林，男，生于1974年。教授，博士生导师。主要从事地震工程研究。E-mail：iemcsl@nuaa.edu.cn

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出版历程
- 收稿日期: 2022-08-15
- 刊出日期: 2022-12-31

Earthquake Response Analysis of Soil-reactor Plant-nuclear power Auxiliary Plant Interaction System

Wang Bo^1
,,
Chen ShaoLin^{1
, ,},
Gao Lei¹,
Tang Hui²

1.
Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2.
Nuclear and Radiation Safety Center of Ministry of Environmental Protection, Beijing 100101, China

摘要

摘要: 土-结构相互作用分析是核电结构抗震设计的重要环节，考虑到附属厂房可能导致反应堆厂房处于最不利工况状态，对地基土-反应堆厂房-核电辅助厂房结构相互作用体系地震响应进行研究。基于PASSI算法，提出显-隐式单元层计算方法，实现显、隐式交替计算，保持高效性的同时，提高计算稳定性。通过场地分析算例和土-结构相互作用分析算例，与ABAQUS软件计算结果进行对比，验证计算方法的可行性。以某核电站为对象，分析同一基础上相邻厂房对反应堆厂房地震响应的影响。研究结果表明，在基岩场地上，安全厂房通过基础和场地对反应堆厂房的作用较小，对反应堆厂房地震响应的影响较小；地震动输入下，燃料厂房和电器厂房加大了反应堆厂房位移峰值，减小了反应堆厂房加速度反应谱峰值，并使反应堆厂房顶部点加速度反应谱峰值向高频移动；与反应堆厂房共用同一基础的辅助厂房，应与反应堆厂房作为整体进行地震响应分析，至少应将与反应堆厂房相连的辅助厂房作为整体进行分析。
- 核电站 /
- 土-结构相互作用 /
- 显-隐式单元法 /
- PASSI /
- 相邻结构
Abstract: Soil-structure interaction analysis is an important step in seismic design, Considering that the existence of the auxiliary plant may cause the reactor plant in the most unfavorable condition, In the paper the coupled dynamic response of soil- reactor plant-auxiliary plant structure system to earthquake excitation is studied. Based on PASSI, a computation scheme of explicit and implicit element layer is proposed, which can realize explicit and implicit computation alternately, and improve the computation stability with high efficiency. The site analysis and soil-structure interaction analysis examples were compared with the results of ABAQUS commercial software, and the feasibility of the calculation scheme was verified. On this basis, the influence of adjacent plants on the seismic response of a nuclear power plant on the same basis was analyzed. The results show that on the bedrock site, the safety plant has little effect on the reactor plant through the foundation and site, It also has little effect on the seismic response of the reactor plant. Under the seismic wave input, the fuel and electrical plant increased the displacement peak of the reactor plant, reduced the peak of the acceleration response spectrum, and made the peak of the acceleration response spectrum of the top point of the reactor plant move to high frequency. The auxiliary plant sharing the same foundation with the reactor plant should be analyzed holistically, and at least the auxiliary plant connected with the reactor plant should be analyzed holistically.
- Nuclear power plant /
- SSI /
- Explicit-implicit element method /
- PASSI /
- Adjacent structure

HTML全文

图 1 SSI系统分析模型

Figure 1. Soil-structure interaction system

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图 2 显-隐式数据交互示意

Figure 2. Explicit-implicit data interaction

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图 3 脉冲波位移时程和频谱曲线

Figure 3. Displacement time history and spectrum of SV/P pulse wave

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图 4 ABAQUS软件中黏弹性人工边界及监测点示意

Figure 4. Viscoelastic artificial boundary and monitoring points in ABAQUS

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图 5 SV波和P波垂直入射场地位移时程曲线

Figure 5. Site response of SV and P wave

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图 6 土-结构相互作用模型

Figure 6. Soil-structure interaction model

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图 7 结构位移时程曲线

Figure 7. Displacement time history of nuclear power plant

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图 8 核电站平面布置示意

Figure 8. Floor plan of nuclear power plant

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图 9 反应堆厂房监测点分布示意

Figure 9. Monitoring points of reactor plant

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图 10 地震动加速度时程与反应谱曲线

Figure 10. Ground motion acceleration time history and response spectrum

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图 11 核电站4种工况模型

Figure 11. Four working conditions model for nuclear power plant

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图 12 反应堆厂房监测点位移时程曲线

Figure 12. Displacement time history of each monitoring point on the reactor plant

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图 13 反应堆厂房监测点加速度反应谱

Figure 13. Acceleration response spectrum of monitoring point on the reactor plant

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图 14 反应堆厂房监测点加速度反应谱

Figure 14. Acceleration response spectrum of monitoring point on the reactor plant

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表 1 土体参数

Table 1. Soil parameters

材料	厚度/m	弹性模量/GPa	泊松比	密度/kg·m⁻³	剪切波速/m·s⁻¹	压缩波速/m·s⁻¹
软土	50	0.108	0.35	1 000	200	416

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表 2 显-隐式单元层计算方法和ABAQUS软件计算效率

Table 2. PASSI and ABAQUS calculation efficiency

算例	单元数/个	节点数/个	自由度数/个	显-隐式单元层计算方法计算时间/min	ABAQUS软件计算时间/min
场地	80 000	85 731	257 193	4	106
土-结构相互作用	80 010	85 771	257 313	33	106
注：自由度数=节点数*3（每个节点自由度个数）

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表 3 核电站结构材料参数

Table 3. Material parameters of nuclear power plant

编号	材料	结构	弹性模量/GPa	泊松比	密度/kg·m⁻³
1	C30	厂房/基础	32.5	0.2	2 400
2	C40	内/外壳	36.0	0.2	2 450

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表 4 核电站厂址参数

Table 4. Soil parameters of nuclear power plant site

材料	厚度/m	弹性模量/GPa	泊松比	密度/kg·m⁻³	剪切波速/m·s⁻¹	压缩波速/m·s⁻¹
岩石	60	46.9	0.26	2 650	2 673	4 639

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表 5 模态分析

Table 5. Modality analysis

振型	Case1		Case2		Case3		Case4
振型	频率/Hz	振型参与系数	频率/Hz	振型参与系数	频率/Hz	振型参与系数	频率/Hz	振型参与系数
1	3.006 69	0.186 26	3.006 69	0.186 19	4.016 96	1.000 00	3.726 48	0.426 64
2	3.007 49	1.000 00	3.007 49	1.000 00	4.068 74	0.277 89	3.861 54	0.413 38
3	4.078 57	0.540 83	3.725 20	0.677 04	4.114 50	0.094 62	3.885 43	0.002 48
4	4.096 08	0.381 57	3.858 00	0.683 88	4.210 24	0.482 59	4.017 18	1.000 00
5	5.488 44	0.002 04	3.885 28	0.009 75	4.739 49	0.029 30	4.068 75	0.275 37
6	5.513 01	0.001 43	4.078 57	0.540 69	5.472 46	0.169 67	4.114 53	0.097 12
7	5.540 46	0.003 31	4.096 08	0.381 50	5.566 56	0.002 17	4.210 38	0.480 55
8	5.572 03	0.004 84	4.559 21	0.068 57	5.610 47	0.012 11	4.560 35	0.045 69
9	5.629 19	0.003 16	5.439 43	0.064 35	5.762 07	0.080 10	4.739 62	0.029 71
10	5.658 22	0.010 71	5.488 44	0.002 05	6.163 02	0.037 35	5.441 09	0.042 47
11	6.426 34	0.004 54	5.513 01	0.001 43	6.470 85	0.006 88	5.472 66	0.167 66
12	6.471 34	0.015 75	5.540 46	0.003 31	6.496 26	0.389 72	5.566 56	0.002 12
13	6.496 20	0.598 36	5.572 03	0.004 82	6.615 10	0.003 04	5.610 47	0.011 96
14	6.614 21	0.001 58	5.629 19	0.003 17	6.875 02	0.134 96	5.702 48	0.044 00
15	6.875 13	0.207 35	5.658 22	0.010 72	7.121 85	0.000 71	5.762 18	0.079 50
16	7.117 11	0.000 87	5.698 29	0.070 07	7.183 56	0.005 66	6.163 16	0.037 35
17	7.171 63	0.005 92	6.426 34	0.004 55	7.186 37	0.071 54	6.470 85	0.006 79
18	7.186 59	0.070 52	6.471 34	0.015 75	7.228 46	0.359 01	6.496 26	0.386 15
19	7.218 46	0.014 67	6.496 20	0.598 31	7.349 15	0.546 56	6.615 10	0.003 03
20	7.235 54	0.000 05	6.614 21	0.001 59	7.778 06	0.042 94	6.875 02	0.133 73
21	7.778 05	0.071 15	6.875 13	0.207 34	7.984 62	0.026 00	7.121 85	0.000 71
22	7.984 60	0.042 40	7.117 11	0.000 87	8.112 55	0.020 30	7.183 56	0.005 58
23	8.112 54	0.033 21	7.171 63	0.005 93	8.241 69	0.004 93	7.186 37	0.070 85
24	8.241 67	0.008 19	7.186 59	0.070 51	8.355 48	0.012 78	7.228 55	0.356 06
25	8.355 47	0.020 32	7.218 46	0.014 67	8.603 98	0.003 84	7.349 13	0.541 36
26	8.457 00	0.005 00	7.235 54	0.000 04	8.879 18	0.000 60	7.778 06	0.042 54
27	8.603 97	0.006 27	7.778 05	0.071 15	8.980 48	0.011 40	7.984 62	0.025 76
28	8.977 70	0.014 41	7.984 60	0.042 39	9.092 81	0.031 82	8.112 55	0.020 11
29	9.092 80	0.051 76	8.112 54	0.033 21	9.161 85	0.066 65	8.241 69	0.004 88
30	9.229 79	0.118 33	8.241 67	0.008 19	9.229 87	0.071 67	8.355 48	0.012 67
31	9.414 48	0.015 02	8.355 47	0.020 32	9.414 48	0.009 21	8.603 98	0.003 80
32	9.518 82	0.077 79	8.457 00	0.005 04	9.450 98	0.026 21	8.879 18	0.000 58
33	9.698 92	0.086 25	8.603 97	0.006 27	9.518 87	0.045 52	8.980 48	0.011 29
34	9.776 22	0.456 36	8.977 70	0.014 42	9.787 15	0.014 03	9.092 81	0.031 53
35	9.841 21	0.024 00	9.092 80	0.051 76	9.841 17	0.020 96	9.161 81	0.065 98

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