A simplifyied model for strength calculation of the composite shear wall panel with hidden frame, namely, rigid frame with equivalent diagonal strut is set up, which considers the effect of internal force redistribution of the composite wall panel due to its rigidity variation, and the width of equivalent diagonal strut and area of steel bars can be determined.

The results indicate that the rigid frame-equivalent brace model can better reflect the dynamic characteristics and elastic-plastic deformation situation of the prototype structure.

Analysis of instability failure of certain inclined bracing steel frame;