Deep soil seismic hazard assessment: analyzing the impact of local site effects by stochastic site response analysis—a comparative approach

Ali，Muhammad Salman1; Saeed，Kashif2; Jianxun，Ma1; Dong，Luo1; Ali，Liaqat3

2024-06-01

10.1007/s10064-024-03720-y

Bulletin of Engineering Geology and the Environment   影响因子和分区

1435-9529

1435-9537

Incorporating local site effects into seismic hazard analysis, especially for deep soil sites, is crucial. This study describes probabilistic seismic hazard analysis (PSHA) incorporating site effects for a deep soil site in Pakistan. Bedrock hazard is assessed in FRISK88M using a rigorous logic tree. Equivalent linear site response analysis (SRA) is performed in STRATA and captured the soil variability properties via Monte Carlo simulations. We proposed a hybrid approach in this study which utilizes the outcomes of Random Vibration Theory (RVT) and multiple Time Histories (TH) approach to assess the site-specific amplifications. Incorporating site amplifications transforms rock ground motion models into site-specific then we performed soil PSHA in FRISK88M. The analysis revealed that RVT overpredicts (3–17%) while TH underpredict (1–6%) hazard as compared to the hybrid approach at all return periods. The hybrid approach proposed in this study provides an innovative, effective and reliable estimates.

Deep Soil Site Random Vibration Theory Rigorous Logic Tree Seismic Hazard Assessment Site Response Analysis Time Histories

SCI ; EI

英语

其他

2-s2.0-85193508529

Scopus

1.School of Human Settlements and Civil Engineering,Xiʹan Jiaotong University,Xiʹan,Shaanxi Province,710054,China
2.Works and Services Organization,Islamabad,Pakistan
3.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,China

Ali，Muhammad Salman,Saeed，Kashif,Jianxun，Ma,等. Deep soil seismic hazard assessment: analyzing the impact of local site effects by stochastic site response analysis—a comparative approach[J]. Bulletin of Engineering Geology and the Environment,2024,83(6).

Ali，Muhammad Salman,Saeed，Kashif,Jianxun，Ma,Dong，Luo,&Ali，Liaqat.(2024).Deep soil seismic hazard assessment: analyzing the impact of local site effects by stochastic site response analysis—a comparative approach.Bulletin of Engineering Geology and the Environment,83(6).

Ali，Muhammad Salman,et al."Deep soil seismic hazard assessment: analyzing the impact of local site effects by stochastic site response analysis—a comparative approach".Bulletin of Engineering Geology and the Environment 83.6(2024).