02538nas a2200253 a 450000500170000000800410001703500150005810000280007324501020010126000670020330000550027049000270032550001940035250200590054652013360060565000200194165000260196170000370198770000470202470000430207171000460211481000590216085600650221920260818171634.0181220s2015    th uu m rtt   0|  a1eng d  a.b122096480 aPitak Ruttithivaphanich10aPerformance of vertical drains for prevention of soil liquefaction underneath shallow foundations  aPathum Thani, Thailand :bAsian Institute of Technology,c2015  a90 leaves :bill. (some col.) +e1 online resource1 aThesis ;vno. GE-14-20  aA thesis submitted in partial fulfillment of the requirements for the Degree of Master of Engineering  in  Geotechnical and Earth Resources Engineering, School of Engineering and Technology  aThesis (M. Eng.) - Asian Institute of Technology, 2015  aMostly  cases  of  liquefaction  effects  overlie  by  a  clay  crust  layer   which  is  often  between   shallow  foundation  and  liquefied  sand  layer.  Those  sites  are  easier  liquefaction  occurred   because of confined state of liquefied ground. Moreover, the situated foundations still have  degradation  of  their  bearing  capacity  due  to  excess  pore  water  pressure  buildup  during   ground  shaking.  Therefore,  vertical  drainage  system  is  selected  to  immediately  reduce   excess  pore  water  pressure  under  the  foundation  because  of  high  efficiency  and  low   construction  costs.  This  study  presents  responds  of  excess  pore  water  pressure,  vertical   deformation  under  shallow  foundation  in  treated  and  non- treated  areas  by  prefabricated   vertical  drains  due  to  liquefaction  induced.  These  results  are  evaluated  from  1 -G  shaking   table experiment and   verified  by  FEQDrain  software  which  is  FORTRAN  program  to   calculate  efficiency  of  vertical  drain  during  liquefaction  occurred.  However,  total  vertical   deformation of shallow foundation in liquefaction areas is reduced by the drainage system  due  to  allowable  releasing  of  excess  pore  water  pressure,  and  that  still  lead  to  maintain   stability of the superstructure 0aVertical drains 0aLiquefaction of soils0 aNoppadol Phien-Wej,eChairperson0 aSuttisak Soralump,eExamination committee 1 aPham, Huy Giao,eExamination Committee2 aRoyal Thai Government,eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. GE-14-20  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B03076