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| PFC analysis of the uplift bearing capacity of plate anchors in sand |
| Received:November 02, 2012 Revised:April 11, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201305014 |
| KeyWord:plate anchor pullout capacity model test numerical simulation PFC |
| Author | Institution |
| 刘君 |
大连理工大学 海岸与近海工程国家重点实验室, 大连 ;大连理工大学 水利工程学院, 大连 |
| 胡宏 |
大连理工大学 水利工程学院, 大连 |
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| Abstract: |
| Based on some model tests,the PFC (Particle Flow Code) method was used to simulate the uplift behavior of the strip anchors in medium dense sand.Two shapes of clump particles were formed to simulate irregular sandy particles.The particle grading was generated using the similar grading method according to Fujian standard sand used in the model tests.Numerical biaxial tests were performed using a series of micro parameters.A set of micro parameters were picked out that the equivalent friction angle and dilation angle agreed with those of the sand in the model tests.Then the selected micro parameters were used to simulate the pullout process of plate anchor in the model test.The uplift resistance from numerical simulation agreed well with that from the model tests.Comparing with the model test,PFC method can provide the distribution and evolution process of the particle contact forces,thus can further provide a micro point of view to investigate the mechanism of uplift failure.Finally,the pullout process of inclined plate anchor in sand was simulated.The soil flow mechanism and the contact forces evolution laws of the particles around anchor were discussed.The ultimate pullout capacity of plate anchor by PFC simulations was also compared with previous results. |