Simulated Combined Earthquake and Dead Load Lateral Resistance Building Systems using Nigeria Seismic Data
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Date
2016-01-15
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Journal of Materials and Enviromental Science
Abstract
This study investigated the effects of combined earthquake and dead load on a simulated lateral load resistance building systems. An eight-floor level steel building was modelled in SAP2000, and analysed using seismic information obtained from an earthquake which occurred at Abeokuta, Ogun State, Nigeria. The study was based on a selected magnitude of earthquake by considering the highest magnitude ever experienced in Nigeria which was within 4 – 4.9 (light earthquake category).The building was analysed under bracing and shear wall systems, and it was checked for a maximum deflection and inter-storey drift not exceeding 500 mm and 2% respectively. From the analysis conducted, it was inferred that eccentric bracings are better than concentric bracings in dissipating energy under seismic conditions, short link eccentric bracings provide more stiffness than long link eccentric bracings hence in order to quickly achieve the requirements of a maximum deflection of 500 mm or below and a maximum inter-storey drift of two per cent or below, short links bracings were used which require lesser number of elements compared to long link bracing thus leading to a more economical solution.