Simplified displacement demand prediction of tall asymmetric buildings subjected to long-distance earthquakes

Large-magnitude long-distance earthquakes generated from Sumatra have significant potential engineering implications in Singapore and the Malaysian Peninsula due to accentuation by resonance in both the soil and buildings, and importantly, dynamic torsional amplification of elastic response of tall...

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Veröffentlicht in:Engineering structures 2005-02, Vol.27 (3), p.335-348
Hauptverfasser: Balendra, T., Lam, N.T.K., Perry, M.J., Lumantarna, E., Wilson, J.L.
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container_end_page 348
container_issue 3
container_start_page 335
container_title Engineering structures
container_volume 27
creator Balendra, T.
Lam, N.T.K.
Perry, M.J.
Lumantarna, E.
Wilson, J.L.
description Large-magnitude long-distance earthquakes generated from Sumatra have significant potential engineering implications in Singapore and the Malaysian Peninsula due to accentuation by resonance in both the soil and buildings, and importantly, dynamic torsional amplification of elastic response of tall buildings. This paper introduces a simple assessment procedure which accounts for these amplification mechanisms particularly the effects on dynamic torsional coupling. In the proposed method, which is demonstrated with a typical 16-storey wall-frame building, the eccentricity and stiffness parameters of the equivalent single-storey building model were determined by calibrating its centre of rotation to match with that of the multi-storey building model. Despite the fact that the stiffness eccentricity in a wall-frame system is non-unique, a representative equivalent model can be identified by the method. The use of design charts developed from a parametric study of time-history analyses of single-storey models waives the requirement to conduct any such analyses on a case by case basis in practice. Thus, the proposed method only requires static analyses to be undertaken by the designer. The accuracy of the floor displacement and inter-storey drift demand predicted by the proposed procedure has been verified by comparison with results obtained from time-history analysis of the multi-storey building. However, there are discrepancies in the vertical distribution of inter-storey drifts between push-over analysis and time-history analysis.
doi_str_mv 10.1016/j.engstruct.2004.10.010
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source ScienceDirect Journals (5 years ago - present)
subjects Applied sciences
Asymmetrical buildings
Buildings
Buildings. Public works
Displacement demand
Exact sciences and technology
Far-afield effects
Geotechnics
High rise building
Long distance earthquakes
Stresses. Safety
Structural analysis. Stresses
Structure-soil interaction
Types of buildings
title Simplified displacement demand prediction of tall asymmetric buildings subjected to long-distance earthquakes
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