Laminar vibrating shear soil box testing apparatus

The invention discloses a laminar vibrating shear soil box testing apparatus. The laminar vibrating shear soil box testing apparatus comprises a shear soil box, a vibrator and a driving device, wherein the shear soil box comprises frame layers; the frame layers are connected with a linear guide rail through a sliding block capable of locking and releasing in the longitudinal direction, and connected with a hemispherical column through a resilient plate spring in the transverse direction and in a hinge manner; the frame layers are placed on a base plate of the vibrator; fold type rubber membranes are arranged inside the shear soil box; folds are inserted among the frame layers and in the gaps between the frame layers and the base plate; the base plate of the vibrator is supported on a floor beam through the plate spring and a spring respectively; base plate holes allowing porous stones to be mounted are formed in the base plate; the bottom beam is fixed on the ground of a laboratory; the driving device comprises an electrical servo actuator arranged on the end face of an I-shaped girder, and a force sensor connected with the electrical servo actuator; the electrical servo actuator is mounted on a reaction wall through a connecting plate. The apparatus can simulate the communication process of shear waves in soil layers with limited thickness in the case of earthquake; the laminar vibrating shear soil box overcomes the limitation of a shear force on a common vibrostand base; the apparatus has the characteristics of being simple in structure, economical in manufacture cost, and convenient to mount and apply.