Seismic Behavior Of Simi-rigid Composite Steel Frame With Steel Plate Shear Walls Structural

The semi-rigid composite frame with steel plate shear wall is a new type ofstructure system with excellent lateral resistance capacity, it takes full advantage of thesemi-rigid frame ductility and the steel plate shear walls of lateral stiffness, through thereasonable node designing and the wall arrangement to achieve the stiffness matching ofthe frame and the wall. It has good application prospects in earthquake zones withhigher lateral stiffness and bearing capacity, good ductility and energy dissipationcapacity, simple joint structure, convenient construction. The paper systematicallystudied the semi-rigid composite frame with steel plate shear wall structure, analyzedhysteretic behavior under cyclic loading, revealed the distribution of internal forces andplastic development of structural system, and provided a basis for the engineeringapplication and promotion. The main contents are listed as follows:（1） Through the pseudo-static test research to three two-storey single-spansemi-rigid composite frame with steel plate shear wall, from the energydissipation capacity, bearing capacity, ductility, stress distribution,collaborative work mechanism and the effect of stiffener to analyzed theinternal force conversion and the energy dissipation mechanism of thisstructure, the failure modes and the energy dissipation mechanism areclearly showed.（2） Using the shell181of Ansys to simulate the beams, columns and walls, thestructure performance is analyzed of the unstiffener, cross stiffener,diagonal stiffener SPSW under the cyclic loading, comparing with testdatas. the results indicated: the finite element simulations stress development and failure modes are consistent with experimentalphenomena. The finite element results is basic coincide with the test, is aneffective numerical analysis method.（3） According to the power function model of Kishi&Chen to determine themoment-rotation relationship of the test connection joint, Using theshell181element of Ansys to simulate the beams, columns and walls, thecombin39element to simulate semi-rigid connections, the whole structuralbehavior are analyzed with three joint kinds of the rigid, the semi-rigid andhinge connection. The results show that: In the elastic stage, the change ofjoint rigid has little effect on the bearing capacity of SPSW, theload-displacement curves almost coincide. In the plastic stage, the wallsgradually yield failure along the direction of tension, the structural stiffnessdegradation. The framework as the second line of defensive to provideeffective support, the different joint stiffness leads to the differences of theultimate bearing capacity of structure.（4） Based on equivalent strip theory and static elastic-plastic analysis, thestatic pushover analysis of the one-span eight-story, three-span eight-story,one-span fifteen-story, and three-span fifteen-story steel plate shear wallsare studied by SAP2000. The researched of beam-column connection formand wall arrangement way to the overall performance’s influence ofstructure, revealed the internal force distribution and plastic developmentof the moment-resisting frame and the non moment-resisting frame-steelplate shear wall structure, and provided a basis for engineering applicationand promotion.