The invention discloses a method for
simulation foundation pit excavation inner supporting experiments on the basis of a simple soil
engineering centrifugal
machine and a special clamp thereof. The method comprises the steps of vertically excavating left
soil mass layer by layer in a layered mode, adjusting a supporting mechanism layer by layer so that the supporting mechanism can abut against a supporting plate, utilizing a displacement detection device placed on a next stage
soil mass layer to collect displacement of the supporting plate, starting a centrifugal
machine experiment, stopping the experiment until displacement is stabilized, and taking out a model box; excavating a second layer of
soil mass, and performing a centrifugal
machine experiment after excavation of the second layer of soil
mass; and repeating the operation until a final layer of soil
mass is excavated.
Lateral movement of every working condition stage in the foundation pit excavation process can be accurately measured, and the measurement can be used for guiding actual foundation pit excavation. The
simulation foundation pit excavation working conditions are the same as actual working conditions, and
simulation experiment accuracy is guaranteed; a working principle is simple, a device is simple, the method has convenience in installing operation, and the clamp with different inner supporting screw
welding positions can be manufactured according to different model box sizes and different
engineering projects.