Height-adjustable uniaxial tensile test method for soil body with sliding rod

The invention discloses a height-adjustable uniaxial tensile test method for a soil body with a sliding rod. The method comprises the following steps: 1, combining a height-adjustable mold, specifically comprising: 11, assembling a die fixing end, a die stretching end and a plurality of sliding long strips; 12, assembling two L-shaped bent plates; 13, adjusting the height of the mold: determiningwhether the clamping plate needs to be lifted and the lifting height according to the height of the to-be-simulated sample; 2, preparing a sample; 3, installing the height-adjustable mold and the bottom plate; 4, assembling a uniaxial stretching device; 5, stretching; 6, breaking the sample; 7, drawing a curve; and 8, carrying out uniaxial tensile tests under different sample parameters. Accordingto the invention, a sample preparation mold can be directly used for testing, and the lifting of the clamping plates is matched with the inner wall plates, so that the tensile test of samples with different heights is realize