The Out-of-plane Stability Analysis Of Steel Shear Wall With Slit

Steel structure become one of more and more important structure forms of high structure since higher strength and better ductility of steel. High steels construction is different from single layer or many layers constructions, vertical load is not the main influential factor, lateral load become the first factor to study. lateral resistant systems become an important study object, steel shear wall with slits as a new type of earthquake-resisting element has better benefits. Steel shear wall with slits has been studied by Japanese studiers . The study on steel shear wall with slits is initial stage. Based on the previous research work done on slit shear wall, Stability analysis of slit steel shear wall has been studied in this paper, based on the theoretic study ,the out-of-plane stability of steel slit wall was studied by using FEM Structure analysis program -ANSYS. Several factors were been studied which affect out-of-plane stability of steel slit shear wall, such as welded edge stiffeners, B/H H/t initial geometric imperfection, residual stress etc. The approximate bucking strength expression was put forward in this paper. The inelastic stability of steel shear wall with slits is studied. The details is listed as below:1. The mechanics functions of steel shear wall with slits are analyzed ,such as the initial stiffness expressions the initial yield strength and ultimate strength expressions the out-of-plane behavior and so on.2. The influence of vertical welded stiff eners to the out-of-plane stability, the method of evaluate the restriction of the stiffeners.3. the analysis of the elastic out-of-plane stability with different design parameters ,such as the width to height ratio of the shear wall B/H the height to thickness ratio H/t the width to thickness ratio of flexural links b/t the height to width ratio of flexural links h/b the height of flexural links to the height of height of the shear wall h/H.4. the analysis of the inelastic out-of-plane stability, the two important factors-initial geometric imperfection and residual stress -which affect the ultimate strength of steel shear wall.5. the approximate expressions both elastic buckling strength and the inelastic buckling strength are put forward.Some problem about this research that is worth to be investigated further are put up in the end of the paper.