Combined type device for silt silty clay layer settlement test

The utility model discloses a combined silt silty clay layer settlement test device which comprises a frame, a test tube is arranged on one side of the frame, fixing rings are sleeved on the surface of the test tube at equal intervals, each fixing ring is composed of two equal semi-circular rings, a connecting shaft is connected between the two semi-circular rings, and the connecting shaft is connected with the frame. Through holes are formed in the ends of the two semicircular rings in a penetrating mode, limiting screws are screwed into the through holes in a penetrating mode, through grooves are symmetrically formed in the side faces of the frame in a penetrating mode, a fixing rod is fixed to the surface of one semicircular ring, and the fixing rod is embedded into the corresponding through groove to be connected with the frame. A limiting groove is formed in the top end of the fixing rod; according to the utility model, through the designed fixing ring, when the test tube needs to be combined with the fr