Seismic Damage Repair Theory Test And Numerical Analysis Of Replaceable Wall Panel Steel Frame And Non Stiffened Steel Plate Shear Walls

The structure of post repair steel frame type steel slanted steel plate shear wall is welded by beam to column joints to construct an outer frame,embedded plates and frames are welded through the fishplate,the way of connecting the stiffened rib of bilateral steel and the embedded plate bolt,while inheriting the advantages of traditional steel plate shear walls,the adverse effects of welded stiffeners on embedded plates are effectively eliminated.It is easier to repair the system by replacing the stiffener in the later stage.At present,domestic and foreign research on this structure are relatively few.Firstly,the experimental research focused on the specimens SWO on Steel frame type steel slanted steel plate shear wall after repair.The results indicated: Steel frame type steel slanted steel plate shear wall after repair provides good work performance,with the system which has a high level of ultimate bearing capacity,lateral stiffness,good ductility and energy dis-sipation;Lateral stiffeners of bilateral steel can effectively restrain the external buckling of embedded plates,inhibition of the premature occurrence of tension band,the "kneading" phenomenon of the hysteresis curve of the structure is obviously reduced,improve the energy dissipation capacity of the structure,improve the stability of the frame frame,effectively improve the ductility of the structure.Secondly,on the basis of experimental studies,hysteretic behavior,stress,deformation development and failure mechanisms of the Steel frame type steel slanted steel plate shear wall after repair was numerically analyzed.The result indicated: The finite element model can well simulate the energy dissipation capacity of the test condition,the yield load and the overall secant stiffness of the finite element model are slightly larger than the test results,the yield displacement and peak displacement are slightly less than the test results,it can well simulate the anti side performance of the specimen;Embedded plate as the "first line of defense" for seismic fortification,can effectively use its energy dissipation capacity and lateral bearing capacity,prevent the frame from collapsing early.Finally,this paper uses finite element software to model for the comprehensive analysis of the variable parameter channel steel rib,split T-Typed Steel rib and the rib width thick Ness ratio,stiffness ratio of stiffener to parametric ordinary steel rib height to width ratio and stiffness ratio ? of steel frame with diagonal stiffened thin steel plate shear wall buckling performance.The result indicated: With the increase of the width and thick Ness of the stiffener's web,the "k Neading" phenomenon of the hysteresis curve of the structure is improved effectively;In the case of approximate steel quantity,split T-Typed Steel is more effective than Channel steel to suppress the overall buckling of embedded plates;Ordinary steel stiffener saves material,in the case of replaceable stiffeners though,it is not possible to adopt the form of bolt connection,which is not conducive to the repair of the structure in the later period.