000			a
999			_c17686 _d17686
003			OSt
005			20220928143228.0
008			220928b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_918162 _aSiva Parvathi, I.
245			_aXFEM method for crack propagation in concrete gravity dams
250			_aVol.103(2), June
260			_aNew York _bSpringer _c2022
300			_a677-688p.
520			_aCracks should always be examined while building new dams to assess the reliability of existing ones. A precise assessment of concrete dam performance is imperative for forecasting future and existing cracks and seismic capacity. The potential of concrete dams to withstand seismic movement depends on the ability to analyze downstream and upstream face movement. For the investigation of seismic instabilities, the Koyna dam was chosen due to its correlation with respect to the dam as well as foundation regions. A study on the influence of cracks and crack propagation was carried out by considering dam-reservoir-foundation interaction. Cracks are assumed to form where the tensile stresses exceed the allowable permissible limit. Cracks have been modelled by using the eXtended Finite Element Method (XFEM). From the seismic stress analysis of Koyna dam, it is observed that the zones of high tensile stress that exceed the tensile strength of concrete are given as follows: on the downstream neck, the dam foot, the gradient change point, and at a height of 55 m and 85 m above the dam base on the reservoir side. The Koyna dam is studied under various initial cracking conditions. The influence of the initial crack position on the crack propagation mechanism caused by the seismic response is investigated.
650		0	_94642 _aHumanities and Applied Sciences
700			_918163 _aMahesh, M.
773	0		_x 2250-2149 _tJournal of the institution of engineers (India): Series A _dSwitzerland Springer
856			_uhttps://link.springer.com/article/10.1007/s40030-022-00636-2 _yClick here
942			_2ddc _cAR