Fabrication of Rock Foundation Materials and Uplift Test of Model Foundation Based on Similarity Theory

In this paper the rock similar materials were configured in which barite powder, iron powder and quartz sand were used as aggregates, while the water and gypsum were used as cementing agents, and red clay was used as a plasticizer. Using the orthogonal design method, the proportion of cement/aggregate mass ratio（factor A）, cement moisture content（factor B）, aggregate fine particle（iron powder + barite powder）（factor C） and fine particle aggregate iron powder（factor D） were selected as the four factors. A total of 16 groups of material proportion schemes were employed to make the similar materials, whose density, cohesion, internal friction angle, compressive strength, elastic modulus were tested and the effects of the four factors on the physical and mechanical behavior were analyzed; Then, three representative similar materials were selected to make the rock ground, on which the indoor model pull-out test of digging hold foundation was carried out, aiming to study the bearing capacity characteristics and fou