Analysis of Knee-Braced, x-braced Moment Frame for Ductility Based Seismic Design

Abstract

Multistory structures are the type of structures which are often subjected to seismic and wind effects simultaneously. The actual strength in the plan of multistory building is the regularity in planning, the type of materials, construction techniques used during constructions. The structure is mostly constructed to have adequate horizontal solidness to oppose the lateral loads caused by the seismic action and to control the parallel float of the structures. The steel supporting framework in strengthened solid edges is suitable for preventing horizontal powers. In this paper we are preparing and analysing a G + 20 with 3 m spacing of each floors. In this structure we will distinguish exposed casing and edges having X-type bracings or knee bracings at the corners. A three dimensional structure is taken, and 20 stories is taken with story tallness of 3 m. The bars and segments are intended to withstand dead and live load only. Seismic tremor loads are taken by bracings. The bracings are given just on the fringe sections. Analysis and design has been carried out using ETABS software, and the results are discussed.