One simplified method for seismic stability analysis of an unsaturated slope considering seismic amplification effect

Huang, Shuai; Tao, Ran; Wang, Rong

doi:10.1002/gj.4769

Cited by 5 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conventional Newmark method for analysing the seismic stability of soil slopes does not account for the seismic amplification effect, leading to deviations in the assessment of slope stability. To address this issue, a simplified approach for evaluating the stability of unsaturated slopes is proposed by Huang et al (2023). Their study findings reveal that seismic amplification significantly impacts the yield acceleration of slopes, but has minimal influence on the shape of the critical slip surface.…”

Section: Research Outputs Of This Special Issuementioning

confidence: 99%

Application of artificial intelligence in geotechnical and geohazard investigations

et al. 2023

View full text Add to dashboard Cite

The application of artificial intelligence (AI) and big data in geohazard investigations has gained popularity due to the development of machine learning algorithms and data collection methods. Previous studies have compared and applied various machine learning‐based methods, such as conventional machine learning, deep learning, and transfer learning in different areas. This special issue provides state‐of‐the‐art information on the use of AI in geotechnical research, particularly in the Three Gorges Reservoir (TGR) area and adjoining regions. The aim of this volume is to serve as a reference for future researchers interested in exploring the potential of AI in geohazard investigations. It is hoped that this special issue will contribute to the development of guidelines for enhancing the application of AI and big data in geotechnical research, thereby improving our understanding of geological terrains and their associated hazards.

show abstract

Section: Research Outputs Of This Special Issuementioning

confidence: 99%

Application of artificial intelligence in geotechnical and geohazard investigations

et al. 2023

View full text Add to dashboard Cite

show abstract

Using H‐Convergence to Calculate the Numerical Errors for 1D Unsaturated Seepage Under Steady‐State Conditions

Chapuis,

Taveau,

Duhaime

et al. 2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

Unsaturated zones are important for geotechnical design, geochemical reactions, and microbial reactions. The numerical analysis of unsaturated seepage is complex because it involves highly nonlinear partial differential equations. The permeability can vary by orders of magnitude over short vertical distances. This article defines and uses H‐convergence tests to quantify numerical errors made by uniform meshes with element size (ES) for 1D steady‐state conditions. The quantitative H‐convergence should not be confused with a qualitative mesh sensitivity study. The difference between numerical and mathematical convergences is stated. A detailed affordable method for an H‐convergence test is presented. The true but unknown solution is defined as the asymptote of the numerical solutions for all solution components when ES decreases to zero. The numerical errors versus ES are then assessed with respect to the true solution, and using a log–log plot, which indicates whether a code is correct or incorrect. If a code is correct, its results follow the rules of mathematical convergence in a mathematical convergence domain (MCD) which is smaller than the numerical convergence domain (NCD). If a code is incorrect, it has an NCD but no MCD. Incorrect algorithms of incorrect codes need to be modified and repaired. Existing codes are shown to converge numerically within large NCDs but generate large errors, up to 500%, in the NCDs, a dangerous situation for designers.

show abstract

Assessment of seismic slope stability of Rangamati Hill Tracts, Bangladesh

Santo,

Hossain,

Fariha

et al. 2024

Discov Geosci

View full text Add to dashboard Cite

Slope stability is an essential aspect of geotechnical engineering. Unstable slopes or stable slopes influenced by external factors may result in a catastrophic disaster called a landslide. In seismically active areas with steep terrain, landslides commonly occur and are regarded as one of the most severe threats. Bangladesh has not suffered any destructive earthquakes in recent years but has a considerable risk of facing such earthquakes owing to its geological conditions. Although slope failures occurring in the Rangamati Hill Tracts of Bangladesh are mainly rainfall-induced, due to the seismic risk in Bangladesh, it is essential to assess earthquake-induced slope failure in vulnerable areas. In this study, the authors analyzed the seismic slope stability at three locations in the Rangamati Hill Tracts using pseudostatic approaches. The pseudostatic approach with the variation in seismic force based on the seismic coefficient was utilized to determine the critical conditions. Using Newmark’s rigid block method, the permanent displacements for various slope conditions were calculated for the Kobe earthquake. The analysis provided crucial insight into the state of the locations. One location has a low factor of safety (FS) value at a slope angle of 30° or greater, whereas the others have a risk of slope failure at a slope angle of 50° or greater. Newmark’s displacement analysis also showed that the slopes at location 3 have the highest displacement at a lower slope angle, with location 1 and location 2 showing relatively better results than location 3. Structural and bioengineered preventive measures are needed in this area to reduce the vulnerability of possible slope failure.

show abstract

One simplified method for seismic stability analysis of an unsaturated slope considering seismic amplification effect

Cited by 5 publications

References 17 publications

Application of artificial intelligence in geotechnical and geohazard investigations

Application of artificial intelligence in geotechnical and geohazard investigations

Using H‐Convergence to Calculate the Numerical Errors for 1D Unsaturated Seepage Under Steady‐State Conditions

Assessment of seismic slope stability of Rangamati Hill Tracts, Bangladesh

Contact Info

Product

Resources

About