Application of Semi-analytical Finite Plate Strip Method in the Stability Analysis of Rectangular Aqueduct

摘要

The key issue of structural design are three aspects of strength, stiffness and stability. Prestressed rectangular aqueduct that is one of the important hydraulic conveyance also has the same, and it has the "thin" characteristics, and belongs to a slender member, then the stability problem should be paid more attention in the design, Semi-analytical Finite Plate Strip Method solve the problem of the traditional finite element method in the calculation, it is adopted in the local stability analysis of rectangular aqueduct, and it calculates the maximum compressive stress in thin-walled rectangular aqueduct is smaller than the critical instability stress, then rectangular aqueduct can not have local instability, thus it provide a theoritical basis for the stability analysis of rectangular aquduct.