SEISMIC ANALYSIS AND DESIGN OF MODULAR STEEL STRUCTURE WITH SEMI-RIGID CONNECTION

Abstract

In general, structural frames are designed to withstand loads caused by gravity. Because the moment at the beam ends (supports) is usually larger than at midspan, the entire strength of the beam section is seldom used in the case of rigid connections. Semi-rigid connections may be used to lower these end moments and make better use of the beam section. At the joints, they are represented as rotating springs. In this work, a Microsoft Excel spreadsheet is used to compute the initial connection stiffness (Rki) of an unstiffened top and seat angle connection without a double web angle (T&S). In order to investigate possible cost reductions, this idea is then expanded to buildings that are susceptible to lateral loads. The Equivalent Static Method in STAAD.Pro V8i software is used to analyze and build two models of a G+2 industrial Piperack steel structure, one with rigid connections and the other with semi-rigid connections. Maximum shear force, maximum bending moment, and total steel consumption are among the metrics used to compare the outcomes of the two models.