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Thermal stress analysis of underground openings
Author(s) -
Kumar P.,
Singh B.
Publication year - 1989
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610130405
Subject(s) - stress (linguistics) , thermal , stress field , field (mathematics) , containment (computer programming) , displacement (psychology) , mechanics , thermal energy storage , geotechnical engineering , computation , structural engineering , materials science , engineering , finite element method , physics , thermodynamics , computer science , mathematics , pure mathematics , psychotherapist , programming language , psychology , philosophy , linguistics , algorithm
In the use of underground space for storage of solar energy, storage of excess heat from thermal power plants and containment of nuclear waste, the host medium is subjected to a thermal field accompanied by a thermal stress field. These stresses may endanger the stability and integrity of the structure. In this paper, the stress field, in circular and spherical openings, due to a given thermal field is analytically determined and numerically verified. Both lined and unlined openings are considered. The numerical and analytical results are in a satisfactory agreement. The lining stresses, support pressure and radial interface displacement depend only on the thermal field in the lining. A simplified method of stress computation applicable to a thin lining is also presented.