A Comparative Study of The Seismic Provisions of Ebcs-8 And Current Major Building Codes on The Equivalent Lateral Force Analysis And Dynamic Response Spectrum Analysis
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Date
2011-09
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Addis Ababa University
Abstract
This thesis work provides a comparison of seismic provisions having relevance to equivalent lateral force (ELF) and response spectrum analysis (RSA) according to some current seismic codes. The codes reviewed and compared are the uniform building code (UBC, 1997), the International building code (IBC, 2009), the Eurocode 8 (EC8, 2004) and the Ethiopia building code of standard (EBCS-8, 1995). Selection of analysis procedure, regularity criteria, base shear coefficient, distribution of base shear, consideration of torsion, story drift determination and limitation and P-delta effect consideration have been compared. In addition, the design spectra for all soil types and the combination rules of horizontal seismic action are considered for comparison. Furthermore, the ELF and RSA base shear of the four codes using different sample buildings with different heights are compared. Each building is located at all different soil types considered in the codes. Also, the analysis results of the two methods of analysis using different sample buildings compared with each other. Finally, combination rules for horizontal seismic forces are compared and evaluated. In this work, the differences caused by the use of different codes in the ELF and RSA analysis are investigated. The results prove the need to review the EBCS-8 and develop more appropriate relations towards achieving economy and safety
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Response; Spectrum; Analysis