| Title |
Evaluation of the Effect of Initial Condition of the Granular Assembly on the Bearing Capacity of the Shallow Foundation using Photoelastic Measurement Technique |
| Authors |
신상영(Shin, Sang-Young) ; 정영훈(Jung, Young-Hoon) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.3.0471 |
| Keywords |
입상체;얕은 기초;지지력;광탄성 측정;접촉력;사슬 Assembly;Shallow foundation;Bearing capacity;Photoelastic measurement;Contact force;Chain |
| Abstract |
Traditional limit equilibrium method needs an assumption of the failure surface to calculate the bearing capapcity of the shallow foundation. From the viewpoint of the mechanics of granular materials, however, the failure of the soil mass is initated by the local buckling of the contact force chains. In this study we observed the directional distribution of the contact force chains in the granular assembly stacked by model particles subjected to the model shallow foundation during loading. Two sets of the assemblies with a regular structure and initially local imperfection were prepared for tests. Existence of the initial local imperfection has a significant effect on the directional distribution of the contact force chains. The bearing capacity of the assembly with local imperfection is only 67% the capacity of the assembly with the regular structure. |