Abstract: In the current earth quake resisting code provisions for building structures, there remains a need for simple model that provide accurate estimate of response. The concept of lateral stiffness is reviewed, where a single value can be used to represent the stiffness of the storey in a rectangular frame with fixed base which is subjected to distribution of lateral load at stories. In this paper an approximate analysis is performed to examine the behaviour of various model of same reinforced concrete moment resisting frame, which differ in stories and column dimensions. The parameter discussed includes Fundamental natural time period, stiffness, lateral displacement and storey drift. The Analysis is carried out by both processes, Equivalent static analysis from which lateral displacement is found due to lateral load and Dynamic analysis (Response spectrum) from which natural time period, frequencies and mode shapes is found. This whole process is carried out by two adapted procedure that is by full structure analysis and lumped mass model by following the codal provisions of IS 1893 (2002).
The two adapted results are then compared and analyzed using Spreadsheet and ETAB software.
Keywords: Equivalent Static analysis, Response Spectrum, Lateral stiffness, Natural Time Period, Lateral displace-ment, Story Drift, approximate seismic analysis.
Title: Approximate Seismic Analysis Procedure for Multibay RC Framed Structures
Author: Syed Zubair Ahmed, Asst Prof. G S Deshmukh
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
Research Publish Journals
