Abstract: A mathematical model using the beam-shell compound finite strip method is developed to study the elastic stability analysis of multi-trough rectangle aqueducts.The model takes some impacts of transverse stiffeners and crossbars into account.The principle of minimum potential energy is used to deduce the eigenvalue equation for elastic stability problems.To verify the accuracy and efficiency of the beam-shell compound finite strip method,a comparison of the theoretical results of the stability analysis for a...