000 02360cam a2200313 a 4500
003 EG-GiCUC
008 211127s2021 ua dh f m 000 0 eng d
040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.13.05.M.Sc.2021.Ah.S
100 0 _aAhmed Mohamed Omar Mohamed
245 1 0 _aStone columns and pvds modeling techniques with emphasis on load transfer and consolidation behavior /
_cAhmed Mohamed Omar Mohamed ; Supervised Mohamed Abdallah Elkholy , Shehab Sherif Wissa
246 1 5 _aطرق نمذجة الأعمدة الحجرية والمصارف الرأسية سابقة التجهيز مع التركيز على انتقال الاحمال وسلوك التدعيم
260 _aCairo :
_bAhmed Mohamed Omar Mohamed ,
_c2021
300 _a118 P. :
_bcharts , facsimiles ;
_c30cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering
520 _aThis research aims to study soil improvement techniques in soft soil, mainly by using stiffer elements like stone columns or drained elements like sand drains and prefabricated vertical drains (PVDs). At first, modeling techniques were discussed by using Plaxis 3-D and compared with Plaxis 2-D in order to investigate the most probable modeling technique.Then a case study was represented of an embankment constructed upon soft clay stratum in Finland to study the behavior of soft layers under unimproved and improved PVD sections. After modeling verification, which numerical results matched field observations, verified models were used as a parametric study to model stone columns, and sand drains with different diameters in order to compare the rate of consolidation, final settlement, and the relation between axial stiffness ratio with load transfer to split up between stiffer and drainage elements. Finally, design charts have been made to connect the axial stiffness ratio with global safety and settlement improvement factors
530 _aIssued also as CD
653 4 _aPrefabricated vertical drains (PVDs)
653 4 _aSoft clay
653 4 _aStone columns
700 0 _aMohamed Abdallah Elkholy ,
_eSupervisor
700 0 _aShehab Sherif Wissa ,
_eSupervisor
905 _aNazla
_eRevisor
905 _aShimaa
_eCataloger
942 _2ddc
_cTH
999 _c83320
_d83320