Displacement Field of an Uplifting Anchor in Sand
by Mingliang Liu, (Ph.D. Candidate, Geo-Institute, Hohai University, Nanjing, China 210098. E-mail: mliu@hhu.edu.cn), Jinyuan Liu, P.E., P.Eng., M.ASCE, (Assistant Professor, Ryerson University, Toronto, Canada M5B 2K3. E-mail: jinyuan.liu@ryerson.ca), and Hongmei Gao, (Ph.D. Candidate, Geo-Institute, Hohai University, Nanjing, China 210098. E-mail: hongmei54@163.com)
Section: Section 3: Innovative Foundations, pp. 261-266, (doi: http://dx.doi.org/10.1061/41106(379)33)
Access full text
Purchase Subscription
Permissions for Reuse 
| Document type: |
Conference Proceeding Paper |
| Part of: |
Deep Foundations and Geotechnical In Situ Testing |
| Abstract: |
This paper presents a scaled-model test on sand displacement field during anchor uplifting. An in-house data acquisition system is developed to acquire the force, the anchor displacement, and soil images during anchor uplifting. The sand displacement is calculated using the digital image correlation (DIC) method from two images: one is taken at the initial stage and the other is at the peak pullout load moment. The failure plane is identified by locating the maximum shear strains deduced from the displacement field. Two distinctively different shear bands are observed in loose and dense conditions: 1) in loose sand, the shearing bands start at the edges of the anchor plate and converge and form a bell above the anchor; 2) while in dense sand these shear bands extend outward to the ground surface with an inclination angle with the vertical of approximately 1/2 to 1/3 the friction angle of soil. |
|
