| Author | Nguyen Tin |
| Call Number | AIT Thesis no.GE-08-03 |
| Subject(s) | Soil-structure interaction
|
| Note | A thesis proposal submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical and Geoenv ironmental Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-08-03 |
| Abstract | In this study, modification of K-stiffness method which is used to calculate the reinforcement load of Mechanically Stabilized Earth (MSE) structures on hard foundation was investigated to be applied for reinforced structures on soft ground. Furthermore, pullout tests were conducted to evaluate new modifications of steel grids reinforcement. Firstly, current design methods for estimation of reinforcement loads of reinforced structures on hard ground, Tieback Wedge or Simplified Method (AASHTO 2002), FHWA Structure Stiffness method, original K-stiffness method and modified K-stiffness method were applied to calculate the reinforcement load of the previous embankments of Bergado et al. (1991) and Voottipruex (2000) constructed on soft ground in AIT campus. From the comparison of calculated and observed values, the modification of original K¬stiffness method was given by suggesting the uniform distribution of the reinforcement load and adding one more factor, settlement factor <1>s, to consider the influence of settlement on the reinforcement load. In addition, pullout tests were conducted to find out the new structure of steel grid reinforcement by making one or two triangular kinks on it to effect yielding in the steel grid. The pullout resistance is higher at larger pullout displacement when more kinks are made in the steel grid. Adding more kinks on the steel grid allows enough required lateral yielding with sufficient displacements to achieve the active condition instead of at rest condition and thereby reduce the loading in the reinforcements as well as save costs |
| Year | 2009 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-08-03 |
| 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) | Bergado, Dennes T.; |
| Examination Committee(s) | Noppadol Phien-wej;Park, Kyung Ho; |
| Scholarship Donor(s) | Netherlands; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |