02499nam a2200253   450000500170000000800410001703500150005810000230007324501450009626000520024130000150029349000270030850001360033550200590047152013650053061000440189561000360193965000200197570000370199570000470203270000420207981000590212185600650218020260818175549.0               th                  eng    a.b115336140 aWasu Likitwanagarn10aReanalysis of preloading with prefabricated vertical drains for the Bangkok-Chonburi Highway Project and the Outer Bangkok Ring Road Project  aBangkok :bAsian Institute of Technology,c1996  a162 leaves1 aThesis ;vno. GE-95-13  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of  Engineering, School of Civil Engineering  aThesis (M. Eng.) - Asian Institute of Technology, 1996  aIn the Thailand Department of Highways (DOH) Projects of the, Second Bangkok Chonburi Highway and Outer Bangkok Ring Road Projects, the preloading with prefabricated  vertical drain (PVD) were used to improve the subsoil layer. The instrumentation were installed  to measure the behaviour of foundation soil under the highway embankment loading in the field.  The observed settlement data were considered to provide us with reliable and direct information  which are representative of the soil mass in the subsoil. In this study, soil parameters were  determined by back-calculation. ASAOKA method was used to back-calculate the soil  parameters from the monitoring data. The back-figured horizontal coefficient of consolidation  (C11) was used to predict the amount and rate of settlements. Good agreement were obtained in  case of ASAOKA method. One-dimensional and SKEMPTON & BJERRUM method were  slightly higher in both highway embankment except section 2A/1 of SBCH which is rather high.  The back-calculated C11 value of SBCH range from 8.6 to 87 m 2 /yr and 11 to 40 m 2 /yr for OBRR.  The alternative construction sequence were predict by using the back-figured soil parameters in  combination with SHANSEP method. The preloading time was reduced to about 2 to 4 months  using the alternative construction sequence compared to the original proposed one10aSecond Bangkok-Chonburi Highway Project20aOuter Bangkok Ring Road Project 0aVertical drains1 aBergado, Dennes T.,eChairperson0 aNoppadol Phien-Wej,eExamination Committee1 aSugimoto, M., eExamination Committee2 aAsian Institute of Technology.tThesis ;vno. GE-95-13  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B15104