Mechanical model of the H-beam with corrugated webs were established,and the webs\' academic formulas of shear strength was put forward based upon both the plate partial buckling and global buckling theory.

An approach for refined parametric 3D non-linear analysis of semi-rigid steel beam-column connections of top-seat-angle with double web-angle is presented.

The paper has used ANSYS to simulate the stress of roof when corrugated steel web composite box girder is bended,and through compares the result of simulation and theory,the paper indicates the method that uses ANSYS to analysis the structure is feasible.

First of all, the replacement of concrete web with corrugated steel web has greatly reduced its dead weight.

The theoretical and experimental research on the elasto-plastic buckling strength of the web with longitudinal stiffener in I-section steel girder under pure bending was made using energy method and the influence of stiffness of longitudinal stiffener on buckling coefficient of the girder web was analyzed.