Experimental study on Semi-rigid Composite Steel Frame with Steel Plate Shear Walls

摘要

Though the studied of the semi-rigid composite frame with steel plate shear wall, which under lateral cyclic loads, the structure of failure mode, hysteretic curves and deformation of critical sections were obtained. The internal forces transformation and the interactive effect of the joint stiffness with steel plate of the structure were analyzed from energy dissipation capacity, load-carrying capacity, stress distribution and co-working mechanic of steel plate. The results showed that the structure has good energy dissipation capacity; the damage mode is local tearing of the infill plate, the tension-field action is obvious, with forming of plastic hinges at the bottom of column and PR connec tion, the failure mode of the specimen is in-plane flexural. The research provides a basis for engineering application and theoretical analysis of the structural system. Stub-column tests at room temperature and elevated temperatures were performed for three different square hollow sections,SHS-150×150×9,SHS-150×150×6,and SHS-150×150×4. 5 of steel grade BCR295 or STKR400 in Ja paa The main objectives of these tests are to evaluate variations in the compressive behavior of steel stub-columns due to different width-to-thickness ratios and loading strain rates; to investigate the reduction effects on stub-column strength at constant elevated temperatures;and to verify the accuracy of the finite-element model of ABAQUS.