PUBLICATIONS
Published works
Recommended Site Classification Scheme and Design Spectrum Model for Regions of Lower Seismicity
Title | Recommended Site Classification Scheme and Design Spectrum Model for Regions of Lower Seismicity |
Publication Type | Conference Paper |
Year of Publication | 2015 |
Authors | Tsang, H-H, Wilson, J, Lam, N |
Conference Name | Tenth Pacific Conference on Earthquake Engineering Building an Earthquake-Resilient Pacific |
Date Published | 11/2015 |
Conference Location | Sydney, Australia |
Abstract | This paper proposes a site classification scheme and a design spectrum (DS) model for different ground conditions, with site natural period as the key parameter. The proposed model has a particular emphasis on the phenomenon of resonant-like amplification behaviour in soil sites, which have not been explicitly considered in existing code models. The need to address the effects of soil resonance is particularly justified in regions of lower seismicity, where structures are typically of limited ductility with low energy dissipation capability. Significantly, the mitigating effects of a very flexible soil site resulting in reduction in the level of seismic demand on low rise buildings is a distinctive feature of the proposed model which has been well validated by comparison with results obtained from computational site response analysis of soil columns derived from real borehole records, as well as from strong motion data recorded in the 1994 Northridge earthquake. |