Structural stability analysis of waste packages containing low- and intermediate-level radioactive waste in a silo-type repository

Byeon, Hyeongjin; Jeong, Gwan Yoon; Park, Jaeyeong

doi:10.1016/j.net.2020.10.019

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…A conceptual drawing of the underground silo is presented in Figure 4 [1,14]. Its engineering barrier system is composed of a concrete silo, waste packages, disposal containers, and backfill.…”

Section: Layout Of the Underground Silomentioning

confidence: 99%

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Numerical Parametric Studies on the Stress Distribution in Rocks around Underground Silo

Kim

Kim²

2022

Applied Sciences

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The underground silo was constructed as a facility for the disposal of low- and intermediate-level radioactive waste. It is divided into three parts: the upper-dome core, the lower-dome core, and the cylindrical-space core. Numerical parametric studies on the stress distribution occurring in the surrounding rocks around the underground silo are presented in this paper. It is assumed that the soil layer was distributed to a depth of −4.3 m from the ground level, the weathered rocks were distributed to a depth of −9.5 m from the bottom of the soil layer, and the rocks were distributed in the lower part of the weathered rocks. A 2D axial symmetric finite element model was considered for the numerical analysis of the underground silo. A 3D finite element model was used to verify the reliability of the 2D axial symmetric model. Finite element analysis was carried out under various ratios of in situ horizontal stress to vertical stress (Ko). The numerical results obtained through these analyses include detailed stress states in the p–q and octahedral planes at key locations of finite element models around an underground silo. Contours of safety factor distributions are also presented to evaluate the overall structural safety of the surrounding rock mass, which is the main supporting body of the underground silo.

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Section: Layout Of the Underground Silomentioning

confidence: 99%

“…[1,14]. Its engineering barrier system is composed of a concrete silo, waste packages, disposal containers, and backfill.…”

mentioning

confidence: 99%

Numerical Parametric Studies on the Stress Distribution in Rocks around Underground Silo

Kim

Kim²

2022

Applied Sciences

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“…These earthquakes occurred in the area adjacent to WLDC, and the distances from the epicenter were 26 and 46 km, respectively. Therefore, interest in the stability of the underground silo increased significantly [4,10,11]. Although Korea has been recognized as a safe country for earthquakes, relatively large-scale earthquakes occurred in 2016 and 2017, respectively.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative Studies between Frequency Domain Analysis and Time Domain Analysis on Free-Field One-Dimensional Shear Wave Propagation

Kim,

Kim

2024

Applied Mechanics

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In Korea, the underground silo structure for low- and intermediate-level radioactive waste disposal facilities has been constructed and operated since 2014. Large-scale earthquakes occurred in 2016 and 2017, respectively, in Gyeongju and Pohang areas near the underground silo structures, and interest in the stability of the underground silo increased significantly. In this paper, one-dimensional free-field analyses have been carried out before the three-dimensional silo dynamic analyses subjected to earthquake loadings. As an additional study, a new form of the finite element equilibrium equation is derived in terms of relative motions, which is essentially the same equation expressed in terms of total motions where the base shear force is applied to the earthquake load. The accuracy of conventional finite element solutions is evaluated by directly comparing them with closed-form solutions by frequency domain analysis such as SHAKE91.

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“…This study serves as a valuable reference for professionals involved in the design and construction of silos, ultimately ensuring the reliable and sustainable operation of these critical industrial facilities. Byeon H., Jeong G.Y, and Jaeyeong Park (2021) [3] this study focused on modelling the waste package under the expected pressure from backfilling material. The reference model displayed plastic behavior at pressures below 6%, subjecting the waste to direct stress from the lid.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of silos by the post-tensioned method

Mallikarjuna Reddy,

Umesh Kumar,

Aggarwal

et al. 2023

E3S Web Conf.

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This design focuses on the analysis and design of silos exercising the post-tensioned system, aiming to facilitate these critical storehouse structure’s structural effectiveness and safety. Silos are extensively used in colourful diligence to store bulk accoutrements, and their structural integrity is of consummate significance to ensure dependable and secure operations. The study involves a relative analysis between conventional silo designs and those employing the post-tensioned system. The geste of silos under different loading conditions is simulated and evaluated. The assessment considers key performance indicators such as load-bearing capacities, deflection, cracking behavior, and overall stability. The findings indicate that post-tensioning significantly enhances the structural performance of silos. The post-tensioned method offers a sustainable and cost-effective alternative to traditional silo construction by reducing cracking and improving overall stability. The results contribute valuable insights to the optimization of silo design, offering engineers and stakeholders in the industry a practical and efficient solution for industrial storage requirements. In conclusion, the analysis and design of silos using post-tensioning techniques provide a promising approach to enhancing the effectiveness and safety of silo structures. Implementing these innovative methods can improve performance and reduce maintenance costs, making them an attractive option for future silo construction systems.

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Structural stability analysis of waste packages containing low- and intermediate-level radioactive waste in a silo-type repository

Cited by 9 publications

References 2 publications

Numerical Parametric Studies on the Stress Distribution in Rocks around Underground Silo

Numerical Parametric Studies on the Stress Distribution in Rocks around Underground Silo

Comparative Studies between Frequency Domain Analysis and Time Domain Analysis on Free-Field One-Dimensional Shear Wave Propagation

Analysis and design of silos by the post-tensioned method

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