Temperature control testing device for large-size unsaturated coarse-grained soil

The invention discloses a temperature control testing device for large-size unsaturated coarse-grained soil. The device comprises a base and a temperature control inner pressure chamber connected to the base, the temperature control inner pressure chamber is provided with a temperature control channel and an inner cavity, and the bottom of the temperature control channel is provided with a water inlet hole and a water outlet hole. The base is provided with a first through hole and a second through hole which correspond to and are communicated with the water inlet hole and the water outlet hole, and lower openings of the first through hole and the second through hole are connected with an external temperature control circulating device through pipelines. According to the device, the dry-wetstate and the temperature of unsaturated coarse-grained soil are controlled in a conventional large triaxial apparatus, and then the static and dynamic test research of the unsaturated coarse-grainedsoil and the measurement