Seismic Response Analysis of Nuclear Low Pressure Cylinder and Condenser

doi:10.16183/j.cnki.jsjtu.2012.01.024

Abstract

Abstract:

A series of finite element method (FEM) analysis were carried out to study the seismic response of the nuclear low pressure cylinder and condenser, based on the code for seismic design of building. Seismic response characteristics of the nuclear low pressure cylinder and condenser were obtained through the seismic time history analysis and spectrum analysis. The results show that the seismic response of the nuclear low pressure cylinder and condenser presents some vibration model features of plate structures, and has a better aseismic performance than general building.

Key words: low pressure cylinder and condenser, seismic response, time history analysis, response spectrum analysis

CLC Number:

TV312

WANG Fu-fang, LIU Ying-jing, XIANG Guo-wei, WANG Jian-hua. Seismic Response Analysis of Nuclear Low Pressure Cylinder and Condenser[J]. Journal of Shanghai Jiao Tong University, 2012, 46(01): 114-118.

Figures/Tables 11

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Tab. 4

模态阶数	完整模型	对比模型
1	5.160	4.681
2	7.310	7.411
3	7.890	7.764
4	8.863	8.772
5	10.499	10.146
6	10.838	10.335
7	11.558	11.063
8	13.139	12.634
9	13.229	13.479
10	13.622	13.573
11	14.012	13.637
12	14.375	13.708
13	14.638	14.744
14	14.665	15.109
15	15.137	15.468

关键部位	相对地面高度/m	d_max/mm
关键部位	相对地面高度/m	x	y	z
基础附近	约11	2.80	3.85	0.07
顶部进口	约20	2.59	1.90	1.57
侧面开孔	约17	2.26	3.38	0.02

关键部位	水平位移限值/mm^[1]	d_max/mm
基础附近	11～37	3.85
顶部进口	20～67	2.59
侧面开孔	17～56	3.38

地震波输入方向	基础附近			顶部进口			侧面开孔
地震波输入方向	ABS	SRSS	CQC	ABS	SRSS	CQC	ABS	SRSS	CQC
x	3.68	2.11	2.18	2.98	2.03	2.07	2.60	1.77	1.81
y	7.76	5.79	5.68	3.03	1.81	1.76	5.03	4.25	4.21
z	0.08	0.04	0.05	1.99	1.33	1.48	0.09	0.05	0.06

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