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Pushover Analysis of Steel Frame Structures with Different Types of Bracing System


Author(s):

Mayank Chouhan , Ujjain Engineering College, Ujjain M.P.; Dr. Savita Maru, Ujjain Engineering College, Ujjain

Keywords:

Pushover analysis, performance objectives high rise steel frame with different types of bracing, bracing pattern, performance point, displacement

Abstract:

Steel is by far most useful material in construction and played an important role in last few decades. It must necessary to analyze and design a structure to perform well under seismic loads and also endow with well strength, stability and ductility for seismic design. The seismic performance of a multi-story steel frame structure is analyzed according to the provision of current Indian code (IS800-20007), seismic data and seismic factor from Indian code (IS1893-2002). Few guidelines like Applied Technology Council (ATC40) and Federal Emergency Management Agency (FEMA356) have used. Steel bracing is very useful for increasing the shear capacity of the structure. Bracing can be used as retrofit as well. There are few possibilities to arrange steel bracings such as X, V, Diagonal, K (Concentric bracings) and some eccentric bracings as well. Enough work has done in these types of bracings in several analyses. In this study typical G+8 story Steel frame buildings have analyzed, for various types of eccentric and concentric bracings. In this thesis Diamond bracing (Double K), Invert V, two types of eccentric bracings and a bare frame. Performance of each frame is studied through pushover analysis. In the present study five different types of model analyzed using pushover analysis. The pushover analysis has been carried out using SAP2000 v18, a product of computer and structure international. The results of all models are analyze and compare in term of base shear, story displacement, pushover curve, spectrum curve, performance point of the structure and story drift. If the overall performance of the buildings have found between LS-CP (Life safety – Collapse Prevent) structures is safe. The hinge results and location has been determined and it is noted that the most of the hinges begin to form in B-IO range at performance point.


Other Details:

Manuscript Id :IJSTEV4I2030
Published in :Volume : 4, Issue : 2
Publication Date: 01/09/2017
Page(s): 37-44
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