000 03067cam a2200421 4500
005 20260819085352.0
008 201198s1994 th r 0000|0 eng d
035 _a.b10748106
099 9 _aAIT Thesis no. GT-93-18
100 1 _aMohsin, A. K. M.
245 1 0 _aTwo-dimensional simulator for shield behavior
260 _aBangkok :
_bAsian Institute of Technology,
_c1994
300 _a135 leaves
490 1 _aThesis ;
_vno. GT-93-18
500 _aA thesis submitted in partial fulfillment of t he requirements for the degree of Master of Engineering, School of Civil Engineering
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1994
520 _aNow-a- days shield machine is controlled by the expert system or artificial intelligence system. There is no mathematical model at present which can apply for any size and shape of shield machine to simulate it. This research study is the first time and first initiative towards the development of that type of simulator. This research study mainly focus on the analytical formulation of two dimensional shield machine simulator model and finally developing a computer program based on that analytical formulation taking account of relative displacement. Rectangular cross section of shield with unit thickness (due to two dimensional mode l) was used for this analysis. The computer program finally calculate the trace of cutter face , trace of center of jack, rotational angle(A0), advancement of shield machine(Aq, Ar), radius of curvature(R) of the trace of cutter fac e at each step. After the considerable number of steps, the shield machine comes to steady state condition and it further travel along a circular path. The radius of curvature shows the behavior of shield machine. Results obtained from various type of data have been p resented at the end .
650 1 0 _aTunneling
650 1 0 _aShields (Geology)
700 1 _aSugimoto, M.,
_eChairperson
700 0 _aNoppadol Phien-Wej,
_eCo-Chairperson
700 1 _aBergado, Dennes T.,
_eExamination Committee
710 2 _aNORAD (Norway ),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. GT-93-18
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B17937
907 _a.b10748106
_bmnait
_cs
902 _a240403
998 _b2
_c951012
_dm
_ea
_fs
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
942 _c40
909 _aBarcode : 30050120708754
_bCREATED : 1995-10-16
_cRECORD # : i10959269
_dLPATRON : 1017045
_eLCHKIN : 2005-07-28
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 1
_jTOT RENEW : 0
909 _aBarcode : 30050120708721
_bCREATED : 1995-10-16
_cRECORD # : i10959270
_dLPATRON : 1010930
_eLCHKIN : 2000-03-17
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 3
_jTOT RENEW : 0
909 _aBarcode : 30050120308167
_bCREATED : 2016-05-26
_cRECORD # : i12995319
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c123697
_d123697