Abstract: In order to test the bearing capacity of the modular dome sliding mode rigid platform in the pouring of large-diameter silo roof structure, a 36 m span modular dome sliding mode rigid platform was taken out for static load test and theoretical analysis. In this paper, according to the constraints of the actual test object, the effective finite element calculation model parameters are established, and the finite element calculation analysis and test results of a single space pipe truss are compared and analyzed. The test results show that a single space pipe truss has good bearing capacity, and the correctness of the finite element calculation model is verified, which provides a reference for establishing the finite element calculation model of modular dome sliding mode rigid platform.