Numerical analysis on vibration properties of a rigid body on cohesionless foundation soil | |
| Author | Julianto |
| Call Number | AIT Thesis no. GE-00-12 |
| Subject(s) | Soil-structure interaction Soils--Vibration Numerical analysis |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Enginee1ing, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-00-12 |
| Abstract | This study is emphasizing to confiim dependencies of spring stiffness on base size and base pressure as a continuation of research work conducted at Hokkaido University (Kim et al. 2001) by two approaches. Wave velocities and soil shear modulus were assessed by taking advantages of Cone model. Two-dimensional finite element analyses are canied out to investigate the dynamic response of harmonically excited rigid foundations. By applying unit hatmonic translational and rotational displacement, four basic vibration modes are investigated, which are vertical, horizontal, and rocking vibrations, and coupling effect due to horizontal and rocking vibrations. Three key factors are investigated: effect of plate breadth, effect of shear modulus, and effect of Poisson's ratio. Two soil conditions are investigated, which are homogeneous and nonhomogeneous soil profiles with increasing shear modulus as function of depth. For nonhomogeneous soil, effect of nonhomogeneity factor on dependency of dynamic stiffness with respect to combined effect of plate breadth and pressure is taken into account. It is found that the sp1ing stiffness values are directly proportional to shear modulus for vertical and horizontal vibrations, and are proportional to shear modulus and plate breadth for rocking vibration. In the case of nonhomogeneous stiffness, with an increase in the frequency, the spring coefficients relatively decrease with respect to homogeneous case. |
| Year | 2001 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-00-12 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Miura, Kinya; |
| Examination Committee(s) | Noppadol Phien-Wej ;Bergado, Dennes Taganajan; |
| Scholarship Donor(s) | Royal Thai Government- King's Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |