Article
Engineering, Geological
Ali Fallah Yeznabad, Sheri Molnar, M. Hesham El Naggar
Summary: Greater Vancouver faces the highest seismic risk in Canada, requiring a probabilistic approach to assess earthquake-induced landslide hazards. By considering uncertainties in seismic parameters and seismic displacement prediction models, probabilistic displacements can be determined to better assess geological hazard risks.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Fabio Rollo, Sebastiano Rampello
Summary: This paper studies the impact of seismically induced landslides on human and economic losses, and proposes a new relationship for assessing the seismic performance of slopes. The results demonstrate that these relationships, combined with a fully probabilistic approach, provide a useful tool for preliminary estimation of slope seismic performance, considering the seismic activity.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Geological
Mao-Xin Wang, Dian-Qing Li, Wenqi Du
Summary: This study introduces a fully probabilistic framework to assess the seismic displacement hazard of earthen slopes by quantifying the inherent spatial variability of soil strength parameters. The results demonstrate that slopes with soil strength parameters exhibiting weaker spatial variability tend to have larger dispersion of k(y) values and higher displacement hazards.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Engineering, Geological
Mao-Xin Wang, Dian-Qing Li, Yong Liu, Wen-Qi Du
Summary: This study proposes a probabilistic decoupled approach to evaluate the seismic rotational displacement of earth slopes exhibiting rotational failure modes. By considering the depth-dependent variability of soil parameters and properly capturing the dynamic response of slopes, this approach provides accurate slope displacement hazard curves and failure probabilities.
Article
Chemistry, Multidisciplinary
Tamas Janos Katona, Laszlo Toth, Erzsebet Gyori
Summary: The Featured Application Methodology developed for the Paks nuclear site in Hungary aims to contribute to safety justification. State-of-the-art hazard analysis methods provide fault displacement hazard curves, but evaluating ground displacement hazard requires significant effort and data. The proposed methodology, based on seismotectonic modeling and probabilistic seismic hazard analysis, offers a conservative assessment of fault displacement probability to determine its relevance to nuclear power plant safety.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Geological
Mao-Xin Wang, Qiang Wu, Dian-Qing Li, Wenqi Du
Summary: This paper presents a numerical-based seismic displacement analysis for slopes considering the spatial variability of soils. It develops two generic slope models based on a finite-difference approach, and models soil parameters as random fields. Dynamic analyses estimate slope displacements for both deterministic and random slope cases. The results show that neglecting soil spatial variability significantly underestimates slope displacement hazard, and two proposed strategies differ in treatment of aleatory variability.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Yin Cheng, Jianfeng Wang, Yi He
Summary: A deep neural network (DNN) prediction model and a hybrid prediction model have been developed to predict the Newmark slope sliding displacements. These models are more efficient and accurate than conventional regression models, significantly reducing standard deviations. The hybrid model, which includes the effective friction angle, greatly improves prediction performance. These proposed models have been applied in probabilistic slope displacement hazard analysis (PSSDHA) to demonstrate their effectiveness in engineering applications.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Geological
Ali Fallah Yeznabad, Sheri Molnar, M. Hesham El Naggar, H. Ghofrani
Summary: This study investigates the seismic stability of slopes in the Lower Mainland, British Columbia, using a probabilistic solution. It utilizes various seismicity sources and sliding displacement prediction models to determine the probabilistic values of slope displacement at 10 sites. Regional interpolation models are developed using regression analysis to estimate the probabilistic values of slope displacement and seismic coefficient.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Liang Li, Chunli Li, Jiahui Wen, Guangming Yu, Yungming Cheng, Liang Xu
Summary: The paper introduces an effective and efficient swarm response surfaces method for locating slip surfaces. Compared to the full search method, the proposed method requires much less time and effort while providing accurate results. However, significant discrepancies in slip surfaces and primary sliding directions are observed among different methods, highlighting the need to consider these variations in seismic slope risk assessment using swarm response surfaces.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Computer Science, Artificial Intelligence
Partha Sarathi Nayek, Maheshreddy Gade
Summary: This study developed data-driven prediction models for Newmark's sliding displacement using artificial neural networks. The models exhibited better performance than existing prediction models and showed consistency in displacement patterns.
NEURAL COMPUTING & APPLICATIONS
(2022)
Article
Engineering, Geological
Chun-Yu Kan, Chi-Chin Tsai, Chia-Jeng Chen
Summary: This study extends the probabilistic seismic landslide hazard analysis (PSLHA) by utilizing the results from probabilistic seismic hazard analysis (PSHA) to account for uncertainties in ground motions and soil strengths. Two simplified methods are proposed and evaluated, with one demonstrating better performance. The selected method is applied to assess the probabilistic seismic landslide hazard in Taiwan's Tsao-Ling area. Seismic landslide hazard maps are then constructed and compared with a deterministic map from the 1999 Chi-Chi earthquake.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Geological
Jian Ji, Chen-Wei Wang, Yufeng Gao, Limin Zhang
Summary: Earthquakes often trigger landslides and other natural disasters, impacting human life and property significantly. Researchers have found that soil shear strength and Arias intensity play important roles in seismic displacement, and have established a probabilistic distribution to represent the uncertainty of seismic slope displacement.
CANADIAN GEOTECHNICAL JOURNAL
(2021)
Article
Engineering, Geological
Dezhi Zai, Rui Pang, Bin Xu, Jun Liu
Summary: The spectral expression method and random functions are used to generate stochastic ground motions, and the material point method is used for probabilistic slope analysis. The results show that the sliding distance of slopes varies with earthquake action, exhibiting certain randomness, particularly in strong earthquakes. Additionally, slope geometry has a greater influence on sliding distances than material parameters and should be the primary consideration for slope prevention and mitigation.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Geological
Mario Ordaz, Mario A. Salgado-Galvez, Sebastian Giraldo
Summary: The new version of the CRISIS program, called R-CRISIS v20, includes several improvements in geometric, attenuation and seismicity models, as well as a parallelized computational process. These enhancements provide users with more flexibility and efficiency in conducting analyses.
BULLETIN OF EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Environmental
R. Ramkrishnan, Sreevalsa Kolathayar, T. G. Sitharam
Summary: Region-specific GMPEs were used in a comprehensive seismic hazard analysis of the North and Central Himalayas, identifying vulnerable seismic sources based on the Seismotectonic Atlas. The study compiled an up-to-date earthquake catalogue from various sources since 250 BC and estimated Peak Ground Acceleration for individual seismic sources, showing higher PGA values compared to codal provisions for seismic zonation and design horizontal acceleration.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)