Seismic Performance Study of Multistoried Buildings with Oblique Columns by using ETABS

Abstract

Facing a large number of new-type complex structural system and progressively consummate earthquake-resistant theories, the conventional software can no longer meet the needs of calculation and analysis. Meanwhile, some international finite element programs, such as ETABS, were updating themselves but remained respective limitations. China has Circum-Pacific seismic belt and Europe-Asia seismic zone. These two are the largest seismic belts in the world. Densely populated and low seismic capacity buildings, in which the earthquake can be simply summarized as high frequency, wide distribution, high intensity and shallow focal depth was described as the world’s most earthquake disaster area. The seismic performance analysis and research of building structures look more indispensable. The Oblique Columns are neither parallel nor at right angles to a specified line means they are slanted or Rotated at an angle. In this present work, concerns with the elastic flexural buckling of doubly symmetric columns with oblique restraints under concentric loading. Oblique restraints cause coupling between the principal axis deflections and rotations, and the flexural buckling mode involves simultaneous bending about both principal axes. The present work deals with a study on the Oblique columns of different angles in high rise building. In this work, a high rise building with Normal Columns & at different locations of Oblique columns is considered for analysis. In this paper, response spectrum analysis was executed, which were also compared following the analysis results. The results of the analysis on the Story shear, Story stiffness, Storey drift and Displacements are compared. The results are presented in the tabular and graphical form.