Article
Engineering, Geological
S. Mukherjee, A. K. Choudhary, G. L. Sivakumar Babu
Summary: This paper presents a numerical analysis of inclined anchors placed in unreinforced and reinforced sand. The results show that the inclination angle and reinforcement significantly influence the performance of the anchor plates. Other parameters such as friction angle of sand, embedment depth of the anchor plate, and tensile stiffness of the geogrid also affect the anchor capacity. The comparison between inclined anchors and piles suggests that inclined anchors in reinforced sand can lead to economical design at shallow depth.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Engineering, Civil
Bledian Nela, Alejandro Jimenez Rios, Marco Pingaro, Emanuele Reccia, Patrizia Trovalusci
Summary: This paper investigates the influence of partial reinforcement on the structural response of masonry arches and uses an upper bound limit analysis numerical approach to compute the collapse multipliers of two different study cases. The results indicate that partial reinforcement can improve the seismic performance of masonry structures, and the numerical method employed in this study offers high accuracy and efficiency.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Civil
Ismail Benessalah, Marwan Sadek, Pascal Villard, Ahmed Arab
Summary: This paper presents an experimental study on the improvement of shear strength in undrained conditions of geocell reinforced loose sand. The results show that the height of geocells and initial confining pressure have significant effects on the shear strength of the reinforced sand.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2022)
Article
Engineering, Geological
Bo Deng, Minghui Yang
Summary: This study presents an analytical solution for assessing the internal stability and required reinforcement strength of unsaturated GRSSs under steady infiltration conditions, taking into account the effects of suction stress, soil unit weight and tensile strength cut-off. The results indicate that suction stress has a more significant impact on the required reinforcement, and the extended M-C yield criterion is more conservative in the design process.
Article
Green & Sustainable Science & Technology
Yuming Zhu, Fei Zhang, Shilin Jia
Summary: The significant role of geotechnical engineering in achieving sustainable development is often neglected. This study investigates the embodied energy and carbon of three design options for a large retaining structure in China, and finds that GRS technology can significantly reduce energy consumption and carbon emissions. In addition, the use of recycled steel has a smaller environmental impact.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Geological
H. Alhajj Chehade, X. Guo, D. Dias, M. Sadek, O. Jenck, F. Hage Chehade
Summary: A reliability-based analysis method is proposed for the seismic internal stability of geosynthetic reinforced earth retaining walls. The probabilistic analysis is carried out using Sparse Polynomial Chaos Expansion combined with Monte Carlo Simulation. The influence of correlation between soil parameters and distribution type of random variables on the analysis results is investigated.
GEOSYNTHETICS INTERNATIONAL
(2023)
Article
Engineering, Geological
C. Hung, C. H. Liu, H. Liu
Summary: The paper conducts in-depth 3D finite element analyses on geosynthetic-reinforced soil walls with different corner angles, revealing significant influences of corners on wall behaviors, such as minimal lateral displacement at corners, lower reinforcement strength required, decreased stability with larger angles, earlier formation of potential failure surfaces at end walls, deeper potential failure surfaces at corners, and more vertical separations with smaller corner angles.
GEOTEXTILES AND GEOMEMBRANES
(2021)
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, 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, Civil
Pere Roca, Andrew Liew, Philippe Block, David Lopez Lopez, Tomas Mendez Echenagucia, Tom Van Mele
Summary: The Extended Limit Analysis of Reinforced Masonry (ELARM) is a user-friendly method for the design and analysis of reinforced tile vaults. This paper presents a three-dimensional approach to ELARM and describes its application in the design and evaluation of reinforced masonry, reinforced concrete, and concrete-masonry composite shells.
Article
Engineering, Multidisciplinary
Nicola Grillanda, Andrea Chiozzi, Gabriele Milani, Antonio Tralli
Summary: A novel computational approach is presented for the three-dimensional upper bound limit analysis of curved rigid block structures. The use of NURBS solids allows for accurate discretization of complex geometries while maintaining the initial geometry. This approach improves the accuracy of the solution in terms of collapse load multiplier and failure mechanism.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Construction & Building Technology
Jim Shiau, Ji-Sung Lee, Fadhil Al-Asadi
Summary: This study investigates the three-dimensional stability of circular and square trapdoors, considering collapse and blowout scenarios. Through comparison with other published results, key conclusions regarding critical stability numbers and factor of safety have been drawn.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Engineering, Civil
S. Mustapha Rahmaninezhad, Jie Han
Summary: The study aimed to develop a method to estimate the facing lateral deflections of GRR walls under footing loading, with results indicating that walls with lower factors of safety had larger lateral facing deflections.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Computer Science, Interdisciplinary Applications
Hongyu Wang, Maosong Huang, Siau Chen Chian
Summary: This study presents a three-dimensional trench stability analysis in non-uniform clay, introducing a rotational mechanism formulated by spatial discretization to better adapt to typical trench geometries. A linear variation pattern between trench stability number and soil shear strength gradient is found for non-uniform soil profiles, and a simplified method for preliminary trench stability evaluation is proposed. Notable changes in trench safety factor are observed in two-layered clay when the top layer is weaker than the bottom layer.
COMPUTERS AND GEOTECHNICS
(2021)
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, Civil
Fei Zhang, Guangyu Dai, Yufeng Gao, Jie Bian
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2020)
Article
Computer Science, Interdisciplinary Applications
Jian Ji, Weijie Zhang, Fei Zhang, Yufeng Gao, Qing Lu
COMPUTERS AND GEOTECHNICS
(2020)
Article
Engineering, Geological
Shangchuan Yang, Yufeng Gao, Ben Leshchinsky, Kai Cui, Fei Zhang
GEOTEXTILES AND GEOMEMBRANES
(2020)
Article
Engineering, Geological
Shangchuan Yang, Yufeng Gao, Kai Cui, Fei Zhang, Di Wu
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2020)
Article
Engineering, Geological
Shangchuan Yang, Ben Leshchinsky, Kai Cui, Fei Zhang, Yufeng Gao
Summary: This study uses upper-bound kinematic limit analysis to determine the mechanism of failure and bearing capacity factors for shallow foundations near slopes subject to seismic action. The seismic bearing capacity factors are influenced by transitions in failure mechanism, soil properties, and finite configurations of slope and footing geometry, demonstrating significant non-linearity.
Article
Engineering, Civil
Zhou Zheng, Gao Yufeng, Zhang Fei, Song Jian, Zou Degao
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
(2020)
Article
Engineering, Geological
G. H. Lei, F. X. Liu, F. Zhang
ENGINEERING GEOLOGY
(2020)
Article
Engineering, Geological
YuFeng Gao, Lei Hang, Jia He, Fei Zhang, Leon Van Paassen
Summary: The BG system, which combines biocementation with geosynthetic materials, effectively increases pullout resistance compared to the OG system in laboratory tests. This innovative concept shows improved performance in enhancing the pullout resistance of geosynthetic reinforcements.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Marine
Binpeng Zhou, Bin Li, Fei Zhang, Siguo Liu, Yizheng Li
Summary: A vibration test was conducted on large-diameter steel cylinders surrounding the artificial islands of the Hong Kong-Zhuhai-Macau Bridge, with results showing that the components experienced normal performance during vibration, providing important reference for design and safety evaluation.
SHIPS AND OFFSHORE STRUCTURES
(2022)
Article
Computer Science, Interdisciplinary Applications
Shangchuan Yang, Wei Ci, Ben Leshchinsky, Kai Cui, Fei Zhang
Summary: The study investigates the scale effects of rectangular footings near slopes, finding that ignoring scale effects may lead to overly conservative design for bearing capacity. It also concludes that footing shape influences the observed failure mechanism, and a larger internal friction angle can amplify the observed bearing capacity scale effects.
COMPUTERS AND GEOTECHNICS
(2021)
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
Construction & Building Technology
Di Wu, Yuke Wang, Fei Zhang, Yue Qiu
Summary: The study developed a three-dimensional limit analysis method for evaluating slope stability considering pore-water pressures using the pore-water pressure coefficient. By comparing the linear and nonlinear strength envelopes, the study found that linear Mohr-Coulomb envelope overestimates the critical height of slopes under pore-water pressures. Results also showed that as the pore-water pressure coefficient increases, the critical slip surfaces of gentle slopes with nonlinear strength criteria become shallower.
ADVANCES IN CIVIL 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
Guangyu Dai, Fei Zhang, Yuke Wang
Summary: This study presents stability analyses of layered soil slopes in unsaturated conditions and determines the factor of safety involving suction stress of unsaturated soil using a limit equilibrium method. The obtained results show that larger suction stress provided in unsaturated clay dominates the stability of the layered slopes, while the location and thickness of the clay layer have significant influences on slope stability.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2022)
Article
Engineering, Geological
Zhang Fei, Jia Shi-lin, Zhu Yu-ming, Lu Xiao-yi, Shu Shuang
Summary: Stability analyses of reinforced multi-tiered walls were conducted based on the limit equilibrium method to calculate the required strength of geosynthetics. The distribution of required strength and connection strength to the facing for each layer can help avoid composite failures due to insufficient reinforcement length, and connection strength should suddenly increase at the step. The critical offset distance and reinforcement tensile strength distribution are consistent with FHWA recommendations, conservatively estimating wall stability.
ROCK AND SOIL MECHANICS
(2021)