Meanwhile,not only the webs are likely to have local buckling,but also the compressed flanges are likely to have lateral buckling in the region of negative bending moments.

Based on the theoretical analysis of steel-concrete composite box-beams’ lateral buckling,computational model on the stability of composite box-beams are proposed.

And this dissertation studies the stability of composite beam in the following aspects:1) Based on the theoretical analysis of steel-concrete composite box-beams\' lateral buckling, analytical model on the stability of composite box-beams is put forward, and the formula which is used to calculate critical bending moment in negative bending regions is deduced.

Symmetrical instability and sideways instability are the two modes of in-plane instability.

In this paper, one-sided failure mode of foundation is given, and analytical solutions have been developed for ultimate bearing capacity using limit equilibrium on actual-shear plane.

On the approximate calculating method of the rollover instability of the rigid suspender's tied-arch bridge

This paper analyzes the influences of various factors on the lateral stability of long span half through arch bridge using the common finite element method software ANSYS, based on a 198 meter CFST skeleton arch bridge in Chun an of Zhejiang Province.

For a thin-walled bar with openings,a characteristic equation of lateral stability is derived from energy principle and with the aid of variational method.