Modeling of soil for coupled analysis of seepage and deformation behavior | |
| Author | Pathak, Yadav Prasad |
| Call Number | AIT Thesis no.GE-99-18 |
| Subject(s) | Seepage Soil structure |
| Note | A thesis submitted in partial fulfillment of the requirements for the Degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-99-18 |
| Abstract | Transient response of seabed under induced ocean wave loading is the targeted problem of this study and aims to discuss the proper modeling of soil materials to examine the cyclic pore water pressure and effective stresses distribution on the bed. Since soil is multi-phase materials, there are some variations for modeling soil depending on problem and analytical conditions. For the transient behavior of saturated ground, however, the interaction betw((en phases are emphasized depending on frequency and permeability, sometimes more sophisticated model is required for proper results. Herein, four types of model: u-w-p, u-p, u- and w-p models are selected to analyze the transient response of seabed under wave loading and the results of some comparative analyses are presented and analyzed. In each model, close form solutions are obtained in static, quasidynamic and dynamic conditions both in 1-D with finite depth and 2-D with infinite depth. Parametric studies are employed with various types of soil, permeability, degree of saturation and stiffness and wave intensity. The results of this study suggest that wave loadings on a permeable seabed can alter the effective stress state throughout the bed and may affect the stability and erodibility of bottom sediments. Stability is much of a problem in loose sand and gravel is the most stable due to high permeability. u-p quasidynamic 2-D is the best model for all soils and static analysis can also provide the reasonably accurate results for high permeable soils. |
| Year | 2000 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-99-18 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Miura, Kinya |
| Examination Committee(s) | Balasubramaniam A. S.;Lin, Der Guay;Noppadol Phien-wej; |
| Scholarship Donor(s) | Government of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2000 |