In situ direct shear test appearance is taken on portable weak layer

The utility model provides an in situ direct shear test appearance is taken on portable weak layer, include: the counter-force steelframe, the inside test space that forms of counter-force steelframe, the shear box is installed in the test space, on horizontal load cylinder, one end were used in the counter-force steelframe, the other end was used in on the vertical lateral wall of shear box, vertical load cylinder, including ball row, on the one end of vertical load cylinder was used in the top cap of counter-force steelframe, the upper surface that is used in the shear box was arranged to the other end through the ball the utility model discloses can obtain under the normal position condition the undisturbed weak layer area parameter of shearing fast at the scene, the result is more accurate, and is reliable, can be convenient for to test the shear strength parameter in weak layer area under the normal position condition additionally, the utility model discloses it is succinct still to have type of construction, easily operation, portable's characteristics.