03316nas|a2200445 i 4500 20260817171632.0 181100s2000 th u m rtt 00| a1eng d .b11815681 AIT Thesis no.GE-99-10 Chairat Supachawarote Boiling type failure in cofferdam built in river for bridge construction Bangkok : Asian Institute of Technology, 2000 154 leaves Thesis ; no. GE-99-10 A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Civil Engineering This study aims to investigate the cause of boiling type of failure in cofferdam and to propose a rational method for the safety design of cofferdam regarding the threedimensional effect of seepage on the occurrence of boiling type of failure. An actual failure of cofferdam due to the boiling induced by seepage force during renovation of the Daiichi-Shinkawa Bridge is introduced. The cofferdam was designed in accordance with the "Directions for Road and Earthworks" of the Japanese Road Association (JRA). Two dimensional seepage considerations were assumed in the analysis and the stipulated minimum factor of safety is 1.5. The cause of the failure is investigated with a series of parametric study using finite element analysis with 2-D plane condition as well as axisymmetric and 3-D conditions. In addition, the parametric study is extended in 3-D condition to investigate the effect of three-dimensional shape of the cofferdam, excavation depth, depth of impermeable base layer, excavation area, anisotropic permeability. From these series of calculation, some features of the relationships of seepage force with the influencing factors and some charts are presented for a simple estimation of the seepage force regarding the three-dimensional effect of seepage force on the stability of cofferdam. Thesis (M.Eng.) - Asian Institute of Technology Coffer-dams Bridges Foundations and piers Miura, Kinya, Chairperson Balasubramaniam, A.S., Examination Committee Noppadol Phien-Wej, Examination Committee Guey, Lin Der, Examination committee Asian Institute of Technology Partial Scholarship, Scholarship donor Asian Institute of Technology. Thesis ; no. GE-99-10 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B06564 .b11815681 mnait u 240401 0 001118 m a u 0 mnait mnait mnarc 22 20 40 Barcode : 30050120716708 CREATED : 2014-03-26 RECORD # : i12780091 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120716716 CREATED : 2014-07-05 RECORD # : i12797844 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160080999 CREATED : 2016-05-17 RECORD # : i12980298 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 13013 13013 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.GE-99-10 30050120716708 2026-08-17 17:16:32 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.GE-99-10 30050120716716 2026-08-17 17:16:32 4 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.GE-99-10 30050160080999 2026-08-17 17:16:32 1 2026-08-17 40