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Computers and Concrete Volume 14, Number 4, October 2014 , pages 369-385 DOI: https://doi.org/10.12989/cac.2014.14.4.369 |
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Numerical analysis for behavior of outer concrete tank in emergency LNG spillage |
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Jeong Su Lee, Chan Kyu Park, Yun Lee, Ji-Hoon Kim and Seung Hee Kwon
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| Abstract | ||
| In the existing method for analyzing the liquid tightness of the outer concrete tank in an emergency LNG spillage, the temperature variation over time inside the tank, and the concrete properties dependent on temperature and internal moisture content, have not been taken into account. In this study, the analyses for a typical LNG concrete tank subjected to thermal load due to spillage were performed with three different cases: the existing method was adopted in the first case, the transient temperature variation was considered in the second, and the temperature-moisture content dependent concrete properties were taken into account as well as the transient states of temperature in the third. The analysis results for deformation, compressive zone size, cracking, and stress of reinforcements were compared, and a discussion on the difference between the results obtained from the different analysis cases was made. | ||
| Key Words | ||
| NG; spillage, liquid tightness; crack, compression zone | ||
| Address | ||
| Jeong Su Lee and Seung Hee Kwon: Department of Civil and Environmental Engineering, Myongji University, Yongin, 449-728, Republic of Korea Chan Kyu Park: Construction Technology Research Institute, Samsung C&T Corporation, Seocho-Gu, Seoul, 137-857, Republic of Korea Yun Lee: epartment of Civil Engineering, Daejeon University, Daejeon, 300-716, Republic of Korea Ji-Hoon Kim: Energy System Team, Samsung C&T Corporation, Seocho-Gu, Seoul, 137-956, Republic of Korea | ||