Brittle failure of soil-cement columns in lateral load resistance | |
| Author | Pradhan, Samprada |
| Call Number | AIT Thesis no.GE-14-05 |
| Subject(s) | Soil cement construction--Thailand--Bangkok Soil stabilization--Thailand--Bangkok Columns, Concrete |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical and Earth Resources Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-14-05 |
| Abstract | Nowadays, use of soil-cement columns to retain open excavations and to stabilize slope is gaining popularity. However, little studies have been done to study the behavior of SCCs in open excavation, specially concentrating on its brittle nature. Thus in this study,brittle behavior of soil-cement columns is studied considering two cases: unsupported deep excavations and excavated canal slope.Numerical analysis was done using a popular geotechnical software PLAXIS 3D (version 2013).The first part of this study covers behavior of unreinforced soil mixed wall used for retaining lateral earth pressure in open excavation.Such system can fail by bending of soil mixed wall or by shear failure, depending on the strength of in-situ soil and stiffness of the wall.Soil-cement columns might also fail due to formation of excessive tension cracks. This study revealed,use of timber or steel core for reinforcing soil-cement columns increases flexural capacity of soil-cement columns. In addition, use of severalrows of overlapping SCCs to improve the ground can be optimized by using different patterns.In the second part of this thesis, performance of soil-cement columns used for stabilizing canal slope was studiedand compared with the situation on site. Importance of adequate tensile strength of soil-cement columns to prevent flexural failure of soil-cement columns was identified. |
| Year | 2015 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-14-05 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Noppadol Phien-wej; |
| Examination Committee(s) | Pham Huy Giao;Tian Ho Seah; |
| Scholarship Donor(s) | His Majesty the King of Thailand; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2014 |