Abstract:Bladder-type inflatable anchor is the improved and innovated inflatable anchor. In order to analyze the influencing factors of the ultimate up-lift bearing capacity and ultimate displacement, a series of laboratory model tests were carried out on bladder-type inflatable anchor. From experiments, we obtained uplift capacity-displacement curves. Test results have shown that the influencing factors include inflation pressure, embedded depth, length and thickness of rubber membrane, number of airbags, the distance between airbags and so on. However, the influence degree is different on bladder-type inflatable anchor. Through the contrast test with single capsule inflatable anchor, it is concluded that, under the same conditions, the ultimate up-lift bearing capacity of bladder-type inflatable anchor increases 1.2~1.7 times, and the ultimate displacement is 0.37~0.66 times of the single capsule inflatable anchor, which controls the displacement effectively.