Ultimate bearing capacity of rigid strip footings on c-ϕ soil subjected to combined eccentric and inclined loading DOI Open Access

Ngoc Quang Pham,

Satoru Ohtsuka, Koichi Isobe

et al.

IOP Conference Series Materials Science and Engineering, Journal Year: 2023, Volume and Issue: 1289(1), P. 012088 - 012088

Published: Aug. 1, 2023

Abstract The present study calculated the maximum bearing capacity of a strip footing against eccentrically inclined coupled loading on c-ϕ soil, by means plane strain rigid plastic finite element method (RPFEM). influence soil strengths and width V-H H-M failure envelopes (presenting vertical load V , horizontal H moment M ) was thoroughly surveyed to assess uniqueness V-H-M envelope. Based obtained results, envelope found be distinct for each value normalized cohesion c / γB internal friction angle ϕ . A novel equation, which is function achieved predict limit space.

Language: Английский

Micromechanical analysis of particle corner effect on bearing and deformation behaviors of coral sand slope foundation under a strip footing DOI
Yu Peng, Zhaogang Luo, Shao-Heng He

et al.

Journal of Central South University, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Language: Английский

Citations

0
Integrating Multiple Linear Regression Analysis and Machine Learning Models to Predict the Bearing Capacity of Strip Footings on Sandy Clay Slopes DOI
Lindung Zalbuin Mase, Rena Misliniyati,

Nia Afriantialina Muharama

et al.

Transportation Infrastructure Geotechnology, Journal Year: 2025, Volume and Issue: 12(2)

Published: Feb. 1, 2025

Language: Английский

Citations

0
Ultimate bearing capacity of embedded strip footings on rock slopes under inclined loading conditions using adaptive finite element limit analysis DOI Creative Commons

Gang Yang,

Dongjin Xu, Xiaoming Liu

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 13, 2025

The stability of rock slope-footing systems is influenced by various factors, including slope geometry, mass strength, load properties, and foundation placement. Previous studies on the ultimate bearing capacity strip footings slopes have primarily focused geometry with limited attention to effects embedment depth inclined loads. This study employs finite element limit analysis (FELA) method examine influence inclination angles varying depths slopes. Additionally, an image recognition technique utilized quantify sliding volume system at failure moment. A detailed parametric conducted, considering influential parameters such as ratio, properties (inclination angle), edge distance geotechnical based Hoek–Brown criterion. results reveal that increase greater depth. impact loads slope-foundation represented a envelope. Owing asymmetry envelope not symmetric about vertical loading direction.

Language: Английский

Citations

0
Bearing Capacity of a Shallow Foundation above the Soil with a Cavity Based on Rigid Plastic Finite Element Method DOI Creative Commons
Eric Keba Lukueta, Koichi Isobe

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(5), P. 1975 - 1975

Published: Feb. 28, 2024

Based on the Rigid Plastic Finite Element Method (RPFEM), this study investigates performance of footing soil with a cavity. The RPFEM is used in plane strain conditions and necessitates only few materials to predict bearing capacity: unit weight soil, cohesion, shear resistance angle, dilation angle. Considering diverse types, including cohesive intermediate soils, findings are presented through dimensionless 2D charts which horizontal axis X vertical Y normalized parameters R H, representing dimensions plastic mechanism beneath absence Analyzing geometric factors such as width B cavity characteristics (shape, size, location), reveals that farther cavity, less it impacts performance. distribution capacity across (X, Y) space elucidates expansion variation influence zone. Equations incorporating mentioned strengths proposed verified data literature. In zone predominantly extends vertically, following slip surface no void condition. Conversely, for exhibits dependency resulting an extension one direction more than other. Illustrating typical failure mechanisms, delves into detailed discussions enhance comprehension how cavities affect footing.

Language: Английский

Citations

2
Effect of foundation surface roughness on ultimate bearing capacity of an eccentrically loaded foundation DOI Open Access

Pham Ngoc Vinh,

Quang N. Pham, Hoang Van Thang

et al.

The University of Danang - Journal of Science and Technology, Journal Year: 2023, Volume and Issue: unknown, P. 28 - 33

Published: Dec. 31, 2023

The study extensively investigated the ultimate bearing capacity (UBC) of an eccentrically loaded foundation under two scenarios (horizontal sandy soil and slope), utilizing Rigid Plastic Finite Element Method (RPFEM). To precisely simulate a diverse range frictional conditions on surface roughness, novel joint element is introduced, capable accommodating both perfectly rough smooth foundations. A constitutive equation presented to model these elements, significantly influencing failure mechanism shallow foundation. also examines impact friction strength ϕ normalized vertical load V/Vult. RPFEM results reveal that substantially influences V/Vult ratio for slopes, while its effect found be negligible horizontal soil.

Language: Английский

Citations

1
Effect of footing roughness on ultimate bearing capacity of rigid strip footing on sandy soil slope DOI Open Access
Quang N. Pham,

Pham Ngoc Vinh

The University of Danang - Journal of Science and Technology, Journal Year: 2023, Volume and Issue: unknown, P. 22 - 27

Published: Dec. 31, 2023

This study investigates the ultimate bearing capacity of a rigid strip footing on sandy slope using Rigid Plastic Finite Element Method (RPFEM). To accurately represent wide range frictional conditions at roughness, new interface element was introduced, capable accommodating both perfectly rough and smooth conditions. A constitutive equation is introduced to model these elements, which had significant influence failure mode footing. Moreover, focuses assessing critical parameters, including internal friction angle ground, as well geometry parameters (slope b, edge distance L, height H). The RPFEM results illustrate that increasing positively influences capacity, while higher exerts negative effect. Notably, variations in produce consistent outcomes, regardless

Language: Английский

Citations

1
Estimation of ultimate bearing capacity of strip footings on cohesive-frictional soils using non-linear shear strength model DOI Creative Commons
Quang N. Pham,

Pham Ngoc Vinh

The University of Danang - Journal of Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 29 - 34

Published: June 30, 2024

This study widely investigated the applicability of ultimate bearing capacity formula from Architectural Institute Japan (AIJ) while considering effect footing width. An in-house RPFEM program was developed using a non-linear shear strength model that is sensitive to confining stress. The research focuses on evaluating how width and soil properties affect strip footings. Coefficients within AIJ were calculated compared those derived RPFEM, different combinations cohesive frictional strengths across various widths. results closely matched obtained formula. suggests can accurately estimate footings cohesive-frictional soils, taking into account

Language: Английский

Citations

0
Undrained Bearing Capacity of Strip Footing on Clayey Soil Subjected to Combined Eccentric and Inclined Loads DOI
Quang N. Pham, Satoru Ohtsuka,

Vinh Pham

et al.

Lecture notes in civil engineering, Journal Year: 2024, Volume and Issue: unknown, P. 2171 - 2184

Published: Jan. 1, 2024

Language: Английский

Citations

0
Ultimate bearing capacity of rigid strip footings on c-ϕ soil subjected to combined eccentric and inclined loading DOI Open Access

Ngoc Quang Pham,

Satoru Ohtsuka, Koichi Isobe

et al.

IOP Conference Series Materials Science and Engineering, Journal Year: 2023, Volume and Issue: 1289(1), P. 012088 - 012088

Published: Aug. 1, 2023

Abstract The present study calculated the maximum bearing capacity of a strip footing against eccentrically inclined coupled loading on c-ϕ soil, by means plane strain rigid plastic finite element method (RPFEM). influence soil strengths and width V-H H-M failure envelopes (presenting vertical load V , horizontal H moment M ) was thoroughly surveyed to assess uniqueness V-H-M envelope. Based obtained results, envelope found be distinct for each value normalized cohesion c / γB internal friction angle ϕ . A novel equation, which is function achieved predict limit space.

Language: Английский

Citations

0