Indoor similar model test device for vertical bearing characteristics of tubular pile group

The utility model relates to a tubular pile group vertical bearing characteristic indoor similar model test device which comprises a model box and a loading device, the upper end of the model box is open, a foundation is filled in the model box, the foundation is formed by filling a common clay layer and a colored clay layer in a layered mode, a side plate of the model box is a transparent plate, and a trapezoidal embankment is arranged on one side of the upper portion of the foundation. A plurality of pipe piles are pre-buried in the foundation below the embankment and close to the side plate of the model box along the vertical direction; and the loading device is used for applying pressure to the embankment. The model box has the beneficial effects that the side plates of the model box are transparent plates, the tubular pile part in the foundation is arranged at the position, close to the side plates, of the model box, and the damage mechanism of the tubular pile foundation in the foundation can be obtaine