Fragility curve modifiers for reinforced concrete dual buildings, including nonlinear site effects and soil-structure interaction

被引:35
作者
Petridis, Christos [1 ]
Pitilakis, Dimitris [1 ]
机构
[1] Aristotle Univ Thessaloniki, Dept Civil Engn, Thessaloniki 54124, Greece
关键词
Earthquake engineering; fragility; seismic risk; soil– structure interaction; vulnerability; SEISMIC VULNERABILITY ASSESSMENT; HYBRID METHOD; MOMENT; DAMAGE; SHALLOW; DEMAND;
D O I
10.1177/8755293020919430
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
We investigate the influence of soil-structure interaction (SSI) and nonlinear soil behavior on the seismic fragility of reinforced concrete (RC) dual (frame + shear wall) buildings resting on shallow foundations. This article includes a holistic methodology to account for nonlinear soil behavior and soil-foundation-structure interaction in a modular way. Using nonlinear dynamic analyses, we derive fragility curves for a wide set of building typologies and soil profiles, showing that soil behavior during strong shaking significantly affects the vulnerability of the soil-foundation-structure system. The influence of SSI is pronounced mostly for soft soil profiles, varying in a building-specific way. Post-processing of our results evolves into a set of fragility modifiers that enable risk analysts to massively account for soil-related and/or SSI effects in large-scale risk assessments.
引用
收藏
页码:1930 / 1951
页数:22
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