| 000 | 04038nas|a2200409 i 4500 | ||
|---|---|---|---|
| 005 | 20260818113850.0 | ||
| 008 | 191199s1999 th uu m rtt 00| a1eng d | ||
| 035 | _a.b11765008 | ||
| 099 | 9 | _aAIT Thesis no. GE-98-22 | |
| 100 | 1 | _aKim, Han Ki | |
| 245 | 1 | 0 | _aFinite element analysis of soft ground improved by prefabicated vertical drains |
| 260 |
_aBangkok : _bAsian Institute of Technology, _c1999 |
||
| 300 | _a105 leaves | ||
| 490 | 1 |
_aThesis ; _vno. GE-98-22 |
|
| 500 | _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology | ||
| 502 | _aThesis (M.Eng.) - Asian Institute of Technology, 1999 | ||
| 520 | _aThis study performed a detailed investigation on FEM analysis of unit cells and full scale PVD (Prefabricated Vertical Drain) improved ground with embankment surcharge loading. Interface element was introduced to simulate ve1tical drain with finite permeability to take well resistance into consideration. Based on equivalent discharge rate under confined flow condition, an equivalent horizontal permeability was determined to consider smear effect. Fmthermore, FEM analysis incorporated with the proposed matching schemes were performed on axisymmetric unit cell. The numerical results were compared with the theoretical solutions from Zeng (1988). Excellent agreements are found in comparisons. Consequently, the effectiveness of the proposed matching schemes is identified. A series of parametric studies based on the proposed matching scheme, were performed for two layered unit cell and the evaluation of well resistance. The numerical results of two layered unit cell were compared with the theoretical solutions from Onoue (1988). Excellent agreements further identify the applicability of the proposed matching schemes to the multi-layered ground improved by PVD. However, according to the numerical results, the well resistance factor proposed by Hansbo (1979) overestimates the well resistance of vertical drain with shorter installation length. In addition, the proposed matching schemes were employed to convert actual radial flow to two-dimensional plane strain flow based on the equivalent average degree of consolidation and discharge capacity of vertical drain. Well resistance is automatically considered by interface elements, which possesses equivalent discharge capacity to vertical drain in axisymmetric case. Meanwhile, the smear effect proposed by Hird et. al (1992) was also included in the analysis. Eventually, the proposed matching schemes were applied to full scale PVD improved ground with embankment surcharge loading. The evaluation of well resistance was carried out in term of consolidation rate. The numerical results show that significant well resistance existed during consolidation process in the full scale test embankment. | ||
| 650 | 0 | _aFinite element method | |
| 650 | 0 | _aSoil consolidation | |
| 700 | 1 |
_aDer Guey, Lin, _eChairperson |
|
| 700 | 1 |
_aBergado, Dennes T., _eExamination Committee |
|
| 700 | 0 |
_aNoppadol Phien-Wej, _eExamination Committee |
|
| 810 | 2 |
_aAsian Institute of Thesis ; _vno. GE-98-22 |
|
| 856 |
_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B12520 |
||
| 907 |
_a.b11765008 _bmnait _cy |
||
| 902 | _a240420 | ||
| 998 |
_b0 _c991119 _dm _ea _fy _g0 |
||
| 945 | _lmnait | ||
| 945 | _lmnait | ||
| 945 | _lmnarc | ||
| 942 | _c20 | ||
| 942 | _c40 | ||
| 909 |
_aBarcode : 30050120717128 _bCREATED : 1998-06-22 _cRECORD # : i1216382x _dLPATRON : 1012150 _eLCHKIN : 2002-11-04 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 4 _iTOT CHKOUT : 5 _jTOT RENEW : 1 |
||
| 909 |
_aBarcode : 30050120717102 _bCREATED : 1998-06-22 _cRECORD # : i12163831 _dLPATRON : 1010999 _eLCHKIN : 2006-05-11 _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 5 _iTOT CHKOUT : 11 _jTOT RENEW : 15 |
||
| 909 |
_aBarcode : 30050160080809 _bCREATED : 2016-05-17 _cRECORD # : i1297996x _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0 |
||
| 999 |
_c44858 _d44858 |
||