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. 2022 Jan 20;15(3):766.
doi: 10.3390/ma15030766.

Shaking Table Test of a Transfer-Purge Chamber in Nuclear Island Structure

Xuchen Liu  1 , Xiaojun Li  1   2 , Xiaohui Wang  2 , Ning Wang  2 , Zaixian Li  1
Affiliations

Shaking Table Test of a Transfer-Purge Chamber in Nuclear Island Structure

Xuchen Liu et al. Materials (Basel). .

Abstract

The transfer-purge chamber is an operation room for nuclear fuel transport and purging in a nuclear power plant, which has a demand for structural reliability and radiation protection. The transfer-purge chamber has features such as large curvature, heavy concrete, long overhang, and irregular cross-sections, and it is constructed of double steel plates reinforced concrete (SC) structure. This study performed shaking table tests for a 1:4.5 scale model of the transfer-purge chamber. Three sets of ground motions were input in the scale model in the horizontal and vertical directions to study its structural reliability and seismic performance. Acceleration response and strain response of the structure were analyzed to evaluate the dynamic characteristics of the transfer-purge chamber under the ground motion. The results show that the transfer-purge chamber has great stiffness and short periods. The periods slightly increase with the rise of intensity of seismic ground motions. Under the excitation of ground motions, the dynamic response of the transfer-purge chamber is slight. No obvious deformation or damage occurred on the transfer-purge chamber, and cracking in concrete or buckling on steel plate did not appear. The transfer-purge chamber has excellent seismic performance, and it is sufficiently safe and reliable from a structural perspective.

Keywords: double steel plates reinforced concrete structure; nuclear power plant; seismic performance; shaking table test; transfer-purge chamber.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Overall schematic diagram of a nuclear island structure.
Figure 2
Figure 2
The shaking table tests of the transfer-purge chamber model.
Figure 3
Figure 3
Layout of the transfer-purge chamber model (unit: mm): (a) plan view; (b) elevation view.
Figure 4
Figure 4
Schematic diagram of double steel plates reinforced concrete wall.
Figure 5
Figure 5
Layout of accelerometers (unit: mm).
Figure 6
Figure 6
Layout of steel bar strain sensors.
Figure 7
Figure 7
Layout of steel plate strain sensors (unit: mm).
Figure 8
Figure 8
Layout of concrete strain sensors (unit: mm).
Figure 9
Figure 9
Time history and acceleration response spectra of the white noise motion.
Figure 10
Figure 10
Acceleration response spectra of MZQP, MXDB, and YJ with a PGA of 0.24 g and a damping ration of 4%.
Figure 11
Figure 11
The counterweights fell off: (a) inside the transfer chamber; (b) external to the transfer-purge chamber.
Figure 12
Figure 12
Inspection after the tests: (a) no obvious deformation or damage; (b) no crack in concrete; (c) overhang was intact; (d) SC wall worked well.
Figure 13
Figure 13
Peak acceleration amplification factors of the model structure along the structure height (7–9 points).
Figure 14
Figure 14
Peak acceleration amplification factors of the model structure along the structure height (13–15 points).
Figure 15
Figure 15
Peak strains of anchored bars.
Figure 16
Figure 16
Peak strains of steel plates.
Figure 16
Figure 16
Peak strains of steel plates.
Figure 17
Figure 17
Peak strains of concrete.
Figure 17
Figure 17
Peak strains of concrete.
Figure 18
Figure 18
Peak strains of the exposed concrete surface.
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