NDLI: Thermal stress analysis of concrete wall of LNG tank during construction period

Content Provider	Springer Nature Link
Author	Zhai, Ximei Wang, Yonghui Wang, Heng
Copyright Year	2015
Abstract	As the demand for energy growing rapidly these years, liquefied natural gas (LNG) has become one of the significant parts of the energy source for its high calorific value and performances, as well as the ease of transport and storage. Hence, increasing number of LNG tank has been constructed. The outer wall of LNG tank is usually made by reinforced concrete and the thermal induced cracking may occur during construction period because of the heat of hydration and concrete shrinkage. The finite element (FE) method was adopted in this paper to study the temperature and thermal stress distribution on the concrete wall of a 160,000 m$^{3}$ LNG tank. The detailed FE model was first established and mesh convergence analysis was conducted to determine the suitable element size. The heat transfer analysis was conducted to obtain the temperature field on the concrete wall, based on which the incremental method was adopted to calculate the thermal stress. The thermal induced cracks distribution was then obtained by comparing the first principle tensile stress with the ultimate tensile stress of concrete. It was found that the cracks in vertical direction appeared at the concrete wall surface and the cracks in circumferential direction appeared at the buttress column surface. In addition, the major influence factors on the thermal stress were also investigated and the construction season and quality showed significantly effect on the thermal stress.
Starting Page	2393
Ending Page	2406
Page Count	14
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	49
Issue Number	6
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-06-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermal stress Concrete wall LNG tank Heat transfer analysis Finite element method Structural Mechanics Materials Science Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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