Critical dimensions,which indicate the gabled frame need seismic design,are worked out by taking into account the combination of seismic intensity,span of GF,height of GF.

Statically indeterminate problems in calculating the ultimate load of frames;

The structural analysis of Beichuan river concrete-filled steel tubular arch bridge with tied frame;

A programming computational method of the frame influence line;

Simple method for calculating deformation in rigid frame;

Determination of a rigid frame cases without moment in concentrated loading at the joint;

Closed solutions to rigid frames with 5 spans by infinitely distributed and carried over bending moments;

Closed solutions of rigid frames with 6 spans by summing up distributed and transferred moments with infinitel rounds;

Discussion of the Properties of semi-rigid nodes in portal frame;

The review and prospect of cold-formed steel portal frames;

Comparison of deforming behavior in nonlinear and linear of portal frame with tapered members;