Method for evaluating hydraulic fracture of concrete under action of temperature difference

The invention discloses a method for evaluating hydraulic fracture of concrete under the action of temperature difference, and belongs to the technical field of hydraulic engineering facilities. According to the method for evaluating the hydraulic fracture of the concrete under the effect of the temperature difference, firstly, a concrete test piece is subjected to heat loss treatment to simulate the damage condition of the concrete caused by inconsistent internal and external temperatures of the concrete, and the concrete test piece subjected to heat loss is scanned and tested to obtain parameters of the concrete test piece subjected to heat loss; the porosity, the permeability, the splitting tensile strength, the elastic modulus, the compressive strength and the like are specifically included; a numerical model is established according to the data, water injection simulation is carried out through the round holes, changes of the numerical model are observed, and then corresponding fracturing water pressure