000			03070nam a2200385 4500
005			20260818175929.0
008			300798 th eng
035			_a.b10713979
099		9	_aAIT Thesis no.ST-87-13
100	1		_aJou, Tzu-wang
245	1	4	_aThe reliability of an offshore structure in the Taiwan Strait under dynamic actions
260			_aBangkok : _bAsian Institute of Technology, _c1987
300			_a77 p.
490	1		_aThesis ; _vno. ST-87-13
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1987
520			_aA procedure is developed for assessing the reliability of jacket offshore structures, in conditions where they will suffer fatigue damage. A typical fixed steel offshore platform installed in the Taiwan Strait under the dynamic actions of wind, waves, currents, and earthquakes is investigated. The wave action is modelled as an ergodic Gaussian process with narrow-band characteristics using JONSWAP spectra . The wave spectra are modified t o include effects of currents, and wind action is assumed as a percentage of wave action. The corresponding wave force spectra are determined by Airy's linear wave theory. The wind velocity distribution at the site is represented by a Weibull distribution. Earthquake action is considered as a wide band zero mean ergodic Gaussian process with finite duration, in which Tajimi's power spectra are used. Earthquake and wave actions are the main actions considered for the fatigue analysis. Fatigue failure according to Miner's model is computed, in which accumulation of fatigue damage is linear. A lognormal format is used for analysing the fatigue reliability employing the first-order second-moment reliability method. The system reliability is determined by modelling the structure as a combination of series and parallel systems, in which the redundancy of the structural system is assumed as of standby type .
650	1	0	_aOffshore structures
700	1		_aWireland, Martin, _eChairperson
700	1		_aHasegawa Akio, _eExamination Committee
700	0		_aSuphat Vongvisessomjai, _eExamination Committee
710	2		_aBES Engineering Corporation, R. 0. C., Scholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ST-87-13
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B19357
907			_a.b10713979 _bmnait _cs
902			_a240402
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909			_aBarcode : 30050120687834 _bCREATED : 2014-08-04 _cRECORD # : i12787978 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160011887 _bCREATED : 2016-07-04 _cRECORD # : i12926656 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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