|Title||Methods of structural analysis of buildings in regions of low to moderate seismicity|
|Publication Type||Conference Paper|
|Year of Publication||2017|
|Authors||Lumantarna, E, Mehdipanah, A, Lam, N, Wilson, J|
|Conference Name||2017 World Congress on Advances in Structural Engineering and Mechanics|
|Conference Location||Seoul, Korea|
The paper introduces simplified methods for the analysis of multi-storey buildings for regions of low to moderate seismicity. Due to functional and architectural requirement most newly designed and existing buildings feature irregularities. The irregularities can be in a form of vertical irregularity (caused by discontinuity in load carrying elements) and plan irregularity (caused by cores that are eccentric ally placed within the buildings). Contemporary earthquake design standards and assessment procedures require dynamic analyses to be performed on such structures. However, dynamic analyses can be computationally expensive and require expert judgment, especially as far as three-dimensionally modelling is involved.
The early part of the paper presents the simplified method for the analysis of torsionally balanced (TB) buildings. Generalised modal displacements that were derived from parametric studies involving multi-storey buildings with vertical irregularities are introduced. The simplified method has been extended to account for the effects of torsion due to plan asymmetry to produce estimates of the maximum displacement demand at the edges of torsionally unbalanced (TU) buildings.