03315cam a2200433 4500 20260818212608.0 201198s1994 th r 0000|0 eng d .b10570044 AIT Thesis no. GT-93-19 Lim, Seok-san Reverse analysis of sandy ground properties during shield driven tunneling Bangkok : Asian Institute of Technology, 1994 103 leaves Thesis ; no. GT-93-19 A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Engineering, School of Civil Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1994 In this study, a model which could well represent the acting load on shield machine is identified. Acting force on skin plate in this model depends on the relative position of shield in the tunnel alignment. By realizing the fact that acting force on shield satisfy the dynamio equilibrium oondition, aoting foroe on shield face was made cleared as it is shared by force acted on skin plate in order to balance with jack force equipped in shield machine. Assuming that shield is a large load cell, it is confirmed that ground properties can be detected by using reverse analysis which adopt mortified Marquadt's method as a non-linear parameter optimization technique. The formulation in this model include six unknown parameters which can detect the ground properties by using reverse analysis which can adjust acting force on shield. In order to take solution of these analytical scheme, required computer program which is written FORTRAN 77 and verified by manual calculation and by test program is developed. The application of this model is performed by using in-situ data which are taken from single track rail way tunnel near the Tokyo Bay. In addition, ground properties at the portion of this tunnel are detected and compared with previous study. Tunneling Shields (Geology) Sugimoto, M., Chairperson Balasubramaniam, A.S., Examination Committee Noppadol Phien-Wej, Examination Committee Asian Institute of Technology. Thesis ; no. GT-93-19 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17938 .b10570044 mnait s 250528 2 951012 m a s 0 mnait mnait mnarc mnarc 20 40 Barcode : 30050120708770 CREATED : 1995-10-15 RECORD # : i10720418 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120708796 CREATED : 1995-10-15 RECORD # : i1072042x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120308142 CREATED : 2016-05-26 RECORD # : i12995320 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120929624 CREATED : 2019-12-14 RECORD # : i13240158 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 101508 101508 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. GT-93-19 30050120708770 2026-08-18 21:26:08 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. GT-93-19 30050120708796 2026-08-18 21:26:09 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. GT-93-19 30050120308142 2026-08-18 21:26:09 1 2026-08-18 40 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. GT-93-19 30050120929624 2026-08-18 21:26:09 3 2026-08-18 20