Soil sampling device capable of simply and conveniently measuring bidirectional in-situ shear wave velocity of soil sample

The invention discloses a soil sampling device capable of simply and conveniently measuring the bidirectional in-situ shear wave velocity of a soil sample. The soil sampling device comprises a thin-wall inner pipe, an outer pipe and a connecting device, the thin-wall inner pipe is connected with the bottom of the connecting device; the outer pipe is connected with the middle part of the connecting device and sleeves the thin-wall inner pipe; the thin-wall inner pipe is used for loading a soil body, and a pair of convex hole sites are radially distributed on the outer side of the thin-wall inner pipe and used for fixing the bending element; and a blade foot is arranged below the outer pipe and is used for cutting a soil body. After the soil sampling is completed and the soil sampling device is lifted to the earth surface, a bidirectional shear wave velocity test can be immediately carried out: bending elements are arranged on the convex hole positions and the upper end and the lower end of the soil sample, and