Device for testing shear modulus of soil body through combination of bending element and dynamic triaxial

A bending element and dynamic triaxial combined soil shear modulus testing device comprises a piston screw rod, a confining pressure controller, a back pressure controller, a data acquisition system, a computer, a bearing platform and a pressure chamber arranged on the bearing platform, a pressure chamber inner cavity is formed by the bearing platform and the pressure chamber, and a lifting platform, a soil sample base, a soil sample, a soil sample cap and a loading cap are arranged in the pressure chamber inner cavity from bottom to top. A soil sample is placed between the soil sample base and the soil sample cap, the lifting platform is used for lifting the soil sample base to apply a dynamic load to the soil sample, the loading cap is arranged at the lower part of the piston screw rod, and a force sensor connected with the loading cap is arranged at the lower part of the piston screw rod; a top bending element and a bottom bending element are respectively arranged at the top and the bottom of the soil samp