| Author | Islam, Md. Shafiqu |
| Call Number | AIT Thesis no. GT-85-20 |
| Subject(s) | Seismological research
|
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The permanent displacement of ground due to liquefaction during
earthquakes poses problems to lifeline systems such as water, gas and
electricity supplies, sewerage lines, roads and bridges. Many important
constructions, particularly port facilities are build on horizontal backfill grounds of retaining structures. Large permanent displacements of
this type of ground can occur due to the forward movement of the retaining
structures during earthquakes. In this study, the seismic displacement
behaviour of sheet-pile bulkheads, which are widely used as waterfront
retaining structures, is examined in detail. A parametric study, i.e. the
effects of factor of safety used in the static design, angle of friction
of the backfill soil, water table etc. on the the seismic resistance of
the bulkheads, is reported. The most important factor appears to be the
factor of safety used in the static design.
A general computer program is developed using the principle proposed
by Newmark to estimate the permanent displacement of earth and earth retaining structures, once the dynamic resistance to movement is known. A
simplified procedure to predict the permanent displacement of the
liquefied backfill ground induced by the forward movement of the retaining
structure is presented. The proposed method gives reasonable estimation of
permanent displacements, uses simple numerical procedure and is very economical for analysis of large areas as compared to existing analysis. |
| Year | 1986 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Towhata, Ikuo
|
| Examination Committee(s) | Bergado, Dennes T. ;Whitney, Joseph B. R. ;Prinya Nutalaya
|
| Scholarship Donor(s) | The Royal Netherlands Government |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1986 |