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<p>Probabilistic Seismic Risk Assessment (PSRA) has become an important tool to understand the potential consequences of earthquakes. These analyses require suites of vulnerability functions characterizing the likelihood of loss conditional on a ground shaking intensity measure (IM). Current vulnerability models tend to oversimplify the relation between loss ratio and ground shaking, neglecting the response at the floor level or the distribution of non-structural elements (NSE) and contents. In this study, we generate vulnerability functions for low-code reinforced concrete infilled frames with 3, 6, and 12-storeys, using a storey-loss-based estimation approach via generalized Storey-Loss Functions (SLFs). We define representative geometric and material properties for two levels of seismic design and select ground motion records consistent with two tectonic regimes (active shallow and subduction). We perform non-linear time history analysis for each building archetype and develop fragility and vulnerability functions using the Modified Cloud Analysis (MCA) approach. An application for the generalized SLF is conducted using a damageable inventory for Latin America of NSE and building contents. The results show that dispersion for active shallow records is lower with respect to its subduction counterpart. Furthermore, <i>sufficient</i> intensity measures such as AvgSa must be used to ensure that the resulting functions are site independent.</p>

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Seismic vulnerability functions accounting for losses on non-structural elements and contents for regional seismic risk assessment

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Salvador Ramos,
  • Vitor Silva,
  • Romeu Vicente

摘要

Probabilistic Seismic Risk Assessment (PSRA) has become an important tool to understand the potential consequences of earthquakes. These analyses require suites of vulnerability functions characterizing the likelihood of loss conditional on a ground shaking intensity measure (IM). Current vulnerability models tend to oversimplify the relation between loss ratio and ground shaking, neglecting the response at the floor level or the distribution of non-structural elements (NSE) and contents. In this study, we generate vulnerability functions for low-code reinforced concrete infilled frames with 3, 6, and 12-storeys, using a storey-loss-based estimation approach via generalized Storey-Loss Functions (SLFs). We define representative geometric and material properties for two levels of seismic design and select ground motion records consistent with two tectonic regimes (active shallow and subduction). We perform non-linear time history analysis for each building archetype and develop fragility and vulnerability functions using the Modified Cloud Analysis (MCA) approach. An application for the generalized SLF is conducted using a damageable inventory for Latin America of NSE and building contents. The results show that dispersion for active shallow records is lower with respect to its subduction counterpart. Furthermore, sufficient intensity measures such as AvgSa must be used to ensure that the resulting functions are site independent.