LATERAL STABILITY ANALYSIS OF REINFORCED CONCRETE TRUSS BEAM BRIDGE WITH TRAPEZOID SECTION

In this paper, the theory. of flexure and torsion for the truss beam bridge is adopted to drive differential equations of the elastic lateral stability for the truss beam bridge with a trapezoid section. The lateral stability of a simply supported truss beam bridge is analyzed by using the Galerkin's method. Finally the critical load q_cr for its lateral instability is obtained.