Article
Engineering, Geological
Wan Zhang, Jian-feng Chen
Summary: This paper presents numerical modeling of geosynthetic reinforced soil (GRS) walls with different toe restraint conditions. The development of interface stresses and displacements at the wall toe during construction is investigated. The results show that the contribution of the toe to load capacity depends on the shear strength of the effective toe interface.
GEOTEXTILES AND GEOMEMBRANES
(2023)
Article
Engineering, Civil
Rajarshi Pramanik, Sougata Mukherjee, G. L. Sivakumar Babu
Summary: A surrogate model-based response surface method is proposed to predict the maximum wall facing displacement of geosynthetic-reinforced soil (GRS) segmental walls. The study evaluates the performance of the proposed model in terms of the ratio of predicted and simulated maximum wall facing displacement, and identifies the significant impact of soil friction angle on the prediction.
TRANSPORTATION GEOTECHNICS
(2022)
Article
Engineering, Multidisciplinary
Mahmoud Elshafey, Mohamed Elnaggar, Ahmed Yehia Abdelaziz
Summary: This paper presents a numerical investigation on the behavior of reinforced earth retaining walls when used as a quay wall. The study found that the stiffness of the geogrid is the most significant parameter affecting lateral performance, and smaller geogrid spacing can reduce lateral and vertical deformation.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Engineering, Geological
Chunhai Wang, Lei Wang, Huabei Liu
Summary: This study proposes a force equilibrium method to quantify the influence of facing batter on the reinforcement loads of reinforced soil retaining walls under working stress conditions. The method is combined with a nonlinear elastic approach for estimating reinforcement loads neglecting toe restraint. The results show that the proposed method can accurately estimate the reinforcement loads, but there are still some remaining issues to be addressed.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Multidisciplinary
Fei-fan Ren, Qiang-qiang Huang, Xue-yu Geng, Guan Wang
Summary: This paper investigates the effect of groundwater level fluctuations on the seismic response of geosynthetic-reinforced soil retaining walls (GSRWs). A dynamic numerical model is established and validated through centrifugal shaking-table test results. The results show that groundwater level variations have a significant impact on the seismic stability of GSRWs.
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A
(2022)
Article
Engineering, Geological
I. P. Damians, R. J. Bathurst, S. Olivella, A. Lloret, A. Josa
Summary: This paper presents the results of 3D numerical modeling of a 6-m-high mechanically stabilized earth (MSE) wall constructed with concrete panels and steel or polymeric strip reinforcement. The study shows the significant influence of reinforcement stiffness on the wall performance, as well as the changes in earth pressure distribution due to the discontinuous reinforcement arrangement.
Article
Engineering, Geological
P. Xu, K. Hatami, G. Yang, T. Li, X. Liang
Summary: This study presents a numerical modeling analysis on the bearing capacity of full-height MSE walls under strip footing using a validated finite element method. The results show that the facing toe restraint conditions can affect the predicted bearing capacity and failure mechanisms of MSE walls, with the influence decreasing as the footing distance from the facing towards the retained zone.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Engineering, Geological
Bin Ge, Yufeng Gao, Fei Zhang
Summary: This study investigates the impact of concave facing on the internal stability of geosynthetic-reinforced soil walls. The results show that concave facing can significantly reduce the required tension along the reinforcement and the required connection strength is sensitive to the variation in the facing profile.
Article
Engineering, Geological
Bin Ge, Yufeng Gao, Fei Zhang
Summary: Previous studies have shown that concave cross-sectional geometry can enhance slope stability and reduce sediment loss. However, there is limited research on the use of concave facing in geosynthetic-reinforced soil walls. This study proposes a modified top-down procedure to investigate the impact of concave facing on the internal stability of GRS walls and finds that concave facing can significantly reduce the required tension along the reinforcement, but the required connection strength is sensitive to the variation in the facing profile.
Article
Engineering, Civil
Raquel Mariano Linhares, Seyed Hamed Mirmoradi, Mauricio Ehrlich
Summary: This study evaluates the effect of surcharge width on the behavior of geosynthetic-reinforced soil walls through experimental studies and numerical analyses. It was found that the surcharge width, in combination with other factors, can affect the magnitude and position of the maximum reinforcement load and the lateral facing displacement of GRS walls.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Civil
Amr M. Morsy
Summary: This study presents an analytical framework to predict soil stresses and reinforcement loads at facings of reinforced soil walls, and has developed a method for predicting differential settlements between facings and backfills in design. The model predictions of horizontal earth pressure magnitudes at the facings of three reinforced soil walls matched well with field measurements.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Geological
Baaziz Salah Eddine, Mellas Mekki
Summary: This study investigated the influence of modular block types on the behavior of reinforced soil segmental walls, finding that the type of modular blocks has a significant effect in decreasing lateral displacement values of the wall and reducing tensile stress values in the geogrid layers.
GEOTECHNICAL AND GEOLOGICAL ENGINEERING
(2021)
Article
Engineering, Geological
Bin Ge, Huaining Ruan, Shuang Shu, Fei Zhang, Yufeng Gao
Summary: This study conducts a pseudo-static analysis based on limit equilibrium theory to calculate the distribution of required tension in geosynthetic-reinforced soil (GRS) walls under seismic conditions. The effects of various factors on the seismic stability of GRS walls are investigated. The results show that seismic acceleration amplification leads to increased reinforcement tension, particularly in the lower layers of the wall. Lengthening the bottom reinforcement layers can help reduce the required tension and mitigate the risk of reinforcement failure.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Civil
Fei Zhang, Yuming Zhu, Yanbo Chen, Shangchuan Yang
Summary: Current design methods for GRS walls often lead to insufficient reinforcement loads required for seismic stability due to pseudo-static analyses. This study aims to calculate the distribution of reinforcement loads and connection strength for each layer of seismic GRS walls, and conducts parametric studies to investigate seismic impacts on stability and lateral deformation.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2021)
Article
Engineering, Civil
Mehmet R. Kahyaoglu, Mehmet Sahin
Summary: This study investigated the deformation behavior of Polymer strip (PS) reinforced soil retaining walls (RSRW) through field experiments and numerical simulations. The study found the locations of maximum displacements and reinforcement loads in the walls, and explored the effects of various parameters on the walls.
GEOMECHANICS AND ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Peng Xu, Kianoosh Hatami, Guanlu Jiang
COMPUTERS AND GEOTECHNICS
(2020)
Article
Engineering, Geological
A. Hassanikhah, G. A. Miller, K. Hatami
GEOSYNTHETICS INTERNATIONAL
(2020)
Article
Engineering, Geological
P. Xu, K. Hatami, G. Jiang
GEOSYNTHETICS INTERNATIONAL
(2020)
Article
Computer Science, Interdisciplinary Applications
Peng Xu, Kianoosh Hatami, JingJing Bao, Ting Li
COMPUTERS AND GEOTECHNICS
(2020)
Article
Engineering, Geological
Peng Xu, Kianoosh Hatami, Guanlu Jiang
Summary: The hybrid facing model showed similar stability and performance to the full-height panel wall, particularly at higher peak acceleration amplitudes. In both cases, the dynamic increment of lateral earth loads acting on the facing was only 20% of the values calculated using pseudo-static methods.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
Peng Xu, Kianoosh Hatami, Guanlu Jiang
Summary: The influence of loading frequency on the seismic performance of MSE walls with full-height panel facing was investigated through three shaking table tests. The study found that base excitation frequency in combination with base acceleration amplitude could significantly impact the dynamic response of these walls. While model walls primarily responded in a tilting mode, base sliding could also occur at larger excitation amplitudes and closer frequencies to the wall's fundamental frequency, resulting in significant connection loads and other response characteristics. Comparisons were made with results from other studies and design guidelines.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Kianoosh Hatami, Ridvan Doger
Summary: The study shows that using larger facing blocks in GRS abutments significantly improves their load-deformation performance and can help reduce reinforcement costs.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Civil
Peng Xu, Guangqing Yang, Ting Li, Kianoosh Hatami
Summary: This paper presents a numerical modeling study on the upper-bound bearing capacity of footing on back-to-back MSE walls using the FELA method. The influence of wall height on bearing capacity decreases with wall height, and using a full-length top reinforcement layer to connect the back-to-back walls is the most effective method to improve bearing capacity.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Engineering, Geological
P. Xu, K. Hatami, G. Yang, T. Li, X. Liang
Summary: This study presents a numerical modeling analysis on the bearing capacity of full-height MSE walls under strip footing using a validated finite element method. The results show that the facing toe restraint conditions can affect the predicted bearing capacity and failure mechanisms of MSE walls, with the influence decreasing as the footing distance from the facing towards the retained zone.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Engineering, Geological
K. Hatami, J. Boutin
Summary: The influence of backfill type and material properties on the performance of field-scale geosynthetic reinforced soil (GRS) abutment models was investigated. Two types of backfill material, open-graded and well-graded, were used to build the models and their load-bearing performance was compared. Results showed that the well-graded backfill performed better, especially at smaller loads.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Engineering, Geological
Hamed Mirzaeifar, Kianoosh Hatami, Mahmood Reza Abdi
Summary: This paper investigates the possibility of using fine-grained soil as backfill material for geosynthetic-reinforced walls and slopes. The study focuses on the pullout behavior of geogrids in granular layers. The experimental results show that embedding geogrid reinforcement in sand or gravel layers can greatly increase the pullout resistance in moist clay backfill, with a more significant improvement at higher overburden pressures.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Geological
Peng Xu, Ting Li, Kianoosh Hatami, Guangqing Yang, Xunmei Liang
Summary: This paper presents a numerical study on the load-bearing performance of reinforced slopes under footing load. The results show that the soil dilation angle, footing location, and reinforcement design significantly influence the load-bearing performance, and the FELA method can effectively predict the magnitudes of bearing capacity, slope deformation, and mobilized reinforcement load.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Geological
Peng Xu, Yi Zhong, Kianoosh Hatami, Guangqing Yang, Weichao Liu, Guanlu Jiang
Summary: A numerical study was conducted to investigate the seismic stability of mechanically stabilized earth (MSE) walls, revealing that more complex failure geometries could occur in the backfills with extended reinforcement. The study also confirmed the consensus that placing longer reinforcement layers can improve seismic stability.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Peng Xu, Ting Li, Kianoosh Hatami
COMPUTERS AND GEOTECHNICS
(2020)
Article
Engineering, Geological
Ridvan Doger, Kianoosh Hatami
INTERNATIONAL JOURNAL OF GEOSYNTHETICS AND GROUND ENGINEERING
(2020)
