000			02989nas|a2200397 a 4500
005			20260817162503.0
008			051219s2005 th uu|m rtt 0| a1eng d
035			_a.b11976809
099		9	_aAIT Thesis no.GE-04-01
100	1		_aThakur, Pramod Kumar
245	1	0	_aAnalysis of time-dependent response of tunnels considering creep effect
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2005
300			_a102 leaves : _bill. + _e1 online resource
490	1		_aThesis ; _vno. GE-04-01
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, 2005
520			_aAn existing axis-symmetric creep closure computer algorithm using the hyperbolic creep law for circular tunnels (Phienwej, 1987) is modified to incorporate the power creep law. Effect of various types of supports in accordance with convergence-confinement method given by Hoek and Brown (1980) is incorporated in the analysis. Location of support installation with respect to the tunnel face is considered as well. From the study, the hyperbolic creep law is found to be more practical than the power creep law because the former allows for yielding of the ground with increase in time step when large value of Rf (0.90 - 0.99) is used. A parametric study is performed using the hyperbolic law and the results are discussed. Predicted convergence was compared with the monitored convergence data of a number of tunnels and was found in good agreement. Moreover, it is found that the convergence and support yielding time are most sensitive to hyperbolic parameter Eu/(1-3)f and creep parameter . The values of Eu/(1-3)f equal (200 - 250) and equal (0.03 - 0.115) predict the convergence well. The analysis will be useful in predicting time-dependent convergence and support load for tunnels in both rock and soil.
650		0	_aTunnels
650		0	_aRocks _xCreep
700	0		_aNoppadol Phien-Wej, _eChairperson
700	1		_aBergado, Dennes T., _eExamination Committee
700	1		_aPark, Kyung Ho, _eExamination Committee
710	2		_aAsian Development Bank-Japan Scholarship Program, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. GE-04-01
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B12188
907			_a.b11976809 _bmnait _cu
902			_a240329
998			_b0 _c051206 _dm _ea _fu _g0
945			_lmnait
945			_lmnarc
942			_c22
942			_c40
909			_aBarcode : 30050120715221 _bCREATED : 2014-03-26 _cRECORD # : i12780479 _dLPATRON : 1027130 _eLCHKIN : 2016-11-18 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 2 _jTOT RENEW : 2
909			_aBarcode : 30050160054705 _bCREATED : 2016-05-23 _cRECORD # : i12987232 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c5186 _d5186