| Title |
Comparative Analysis and Proposed Revisions to the Korean Seismic Design Standard for Liquid Storage Tanks |
| Authors |
조정래(Cho, Jeong-Rae);김동찬(Kim, Dongchan);이진혁(Lee. Jinhyuk);이재흔(Lee, JaeHeun);윤혜진(Yoon, Hyejin);이진호(Lee, JinHo) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.6.0645 |
| Keywords |
액체저장탱크; 내진설계기준; 동수압; 충격성분; 대류성분 Liquid storage tank; Seismic design standard; Dynamic water pressure; Impulsive component; Convective component |
| Abstract |
Liquid storage tanks are critical components of industrial facilities, where seismic-induced leakage or rupture can trigger secondary hazards such as fire and environmental contamination. Although Korea has domestic standards including KGS GC203 and KDS 33 17 10, they do not explicitly incorporate the equivalent spring-mass models widely adopted in international standards such as ACI 350.3-20(2021), NICEE Guidelines (2007), Eurocode 8-4 (2006), and NZSEE (2009), resulting in limitations in applicability and consistency. This study addresses these gaps by comparing major domestic and international seismic design standards and proposing improvement directions to ensure operational continuity under extreme earthquakes. An equivalent spring-mass model for cylindrical and rectangular tanks was established using the ACI 350.3-20 framework and key strengths of international standards, and natural-period equations for the impulsive and convective components were developed accordingly. The proposed formulations were validated through finite-element analyses (FEA) and comparisons with analytical solutions by Haroun and Housner (1981), Veletsos (1984), and Lamb
(1945), showing excellent agreement for cylindrical tanks and geometry-dependent variations for rectangular tanks. The findings are expected to support the enhancement of Korean seismic design standards and improve consistency in engineering practice. |