The invention relates to a method for performing an expansion test of combined loads on a
solid expansion
pipe, which comprises the following steps of: 1) preparing a sample and an expansion cone; 2) expanding an end part; 3) preparing an expansion test; 4) performing the expansion test, wherein the expansion test can be any one of the following tests: a, a
mechanical stretching expansion test; b, a hydraulic expansion test; and c, a mechanical hydraulic combined expansion test; and 5) performing
data acquisition and
data analysis. In the method, the
mechanical stretching expansion test or the hydraulic expansion test or the combined expansion test of
mechanical stretching and
hydraulic pressure is realized, and the displacement, speed, stretching loads and
hydraulic pressure of the expansion cone and the
radial deformation data of the
solid expansion
pipe in the process of the expansion test can be measured in real time by using axial controlled mechanical stretching loads and the
hydraulic pressure and matching the corresponding expansion conical head. The invention provides a method for the expansion test for simulating actual working conditions in laboratories effectively for the detection of expansion performance and study evaluation of the
solid expansion
pipe and the study and improvement of a connecting structure of the expansion pipe.