Article
Engineering, Geological
Mian Huang, Cheng Lin, Sanat K. Pokharel, Armando Tura, Phalguni Mukhopadhyaya
Summary: This paper presents a new model-test device capable of conducting freeze-thaw tests and plate loading tests on geocell-reinforced soils to study their effectiveness in stabilizing pavements in cold regions. The experimental results showed that the device successfully reduced frost heave and thaw settlement, while increasing the stiffness and bearing capacity of sands. It was found that a temperature drop occurred at the interface between the cooling plate and sands due to thermal contact resistance.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Engineering, Geological
J. Zhang, Z. Yang, Q. Yang, G. Yang, G. Li, J. Liu
Summary: This study investigated the liquefaction behavior and pore water pressure development laws in fiber-reinforced sand using cyclic triaxial tests. The results showed that fiber content and length increased liquefaction resistance, while cyclic stress ratio decreased the cycle number leading to liquefaction. The accumulation of pore water pressure was slower in fiber-reinforced sand compared to unreinforced sand, with different patterns observed at low and high cyclic stress ratios.
GEOSYNTHETICS INTERNATIONAL
(2021)
Article
Engineering, Marine
Fengpeng Zhang, Xuguang Chen, Tao Feng, Yangyang Zhang, Jinyang Guan
Summary: This research investigated the effectiveness of grouting protection as a novel countermeasure to scouring. The results indicate that the ultimate scouring depths of piles with grouting were significantly lesser than those without it during scouring. Additionally, it was observed that grouting protection can considerably enhance the ultimate horizontal bearing capacity under static loading.
Article
Construction & Building Technology
Xia Bian, Weiheng Peng, Chengchun Qiu, Guizhong Xu, Yikang Yao
Summary: This study introduces the Geosynthetic Encased Prestressed (GEP) cemented slurry pile technology and evaluates the influence of prestress and geogrid on the bearing capacity of cemented slurry reinforced piles composited foundation. The presence of geogrid enhances the load-bearing capabilities of the composite foundation and reduces settlement. The findings offer valuable insights for practical engineering applications, advancement of ecofriendly transportation, and fostering sustainable development.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Engineering, Geological
J. Derksen, M. Ziegler, R. Fuentes
Summary: This study investigated the bearing capacity failure of geosynthetic-reinforced soil walls through small- and large-scale experiments. It was found that the failure initially occurred at the rear end of the bottom reinforcement, and a multi-body failure mechanism was observed below the base of the wall. These findings are important for understanding the behavior of soil structures and improving engineering practices.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Engineering, Marine
Yong-Xin Sun, Zhi-Peng Wang, Hong-Qiang Dou, Zhan-Fei Qu, Bing-Lei Xue, Ling-Yun Feng
Summary: Throughout their lifespan, monopile foundations supporting offshore wind turbines experience deformation due to horizontal loads from waves, winds, and currents. This study investigates the impact of horizontal cyclic loads on the ultimate uplift bearing capacity of monopile foundations. Model tests were conducted to examine the pile-soil interaction and the results showed a significant reduction in the ultimate uplift bearing capacity of the pile after experiencing horizontal cyclic loading. A semi-empirical model was developed to predict the ultimate uplift bearing capacity of the pile foundation. The key findings include the variation of earth pressure, the position of the pile rotation center, and the phases of earth pressure variation during horizontal deformation.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Civil
Xiang Zhou, Wenyuan Liao, Dewen Liu
Summary: An experiment was conducted using an empty belly truss as the mechanical model. Based on the results, the secondary bending moment function was derived, and an ultimate bearing capacity calculation method of the web opening composite beam in the hogging bending moment region with reinforcement measures was established. The results showed that installing stiffeners at the openings effectively improved the shear capacity, and the concrete slab significantly contributed to the shear bearing capacity.
Article
Multidisciplinary Sciences
Yong-Zhi Jiu, Xiang-Yu Zhang, Yan-zhi Zhu, Zhen Zhang, Guang-hui Tian
Summary: This study explores the impacts of soil over-consolidation ratio and pile surface roughness on the time effect of residual pressure and bearing characteristics of jacked pile end in saturated silt foundation.
SCIENTIFIC REPORTS
(2022)
Article
Construction & Building Technology
Shengqiang Li, Jin Wang, Zhiwei Yu, Yadong Li, Hongyan Guo
Summary: This study investigates the bearing capacity of steel formwork concrete columns through compression tests and finite element analysis. The results show that both the tests and numerical simulation yield consistent ultimate bearing capacity, and the numerically obtained nephograms also match the failure mode observed in the tests. Therefore, the proposed finite element model accurately predicts the stress performance of steel formwork concrete stub columns.
Article
Engineering, Marine
Xin Wang, Xue-Liang Zhao, Shu-Huan Sui, Zi-Bei Hu, Wen-Ni Deng, Qi-Ming Song
Summary: The bearing characteristics of a tripod-bucket foundation were investigated through physical model tests and numerical simulations. It was found that as the aspect ratio (L/D) decreases, the rotation center of the foundation decreases and the displacement model changes from rotation to uplift. The characteristics of earth pressure on the buckets were studied to explain the failure mechanism of tripod-bucket foundations with different L/D. A revised method for estimating the moment bearing capacity of the foundation under horizontal and moment load was proposed, which is considered more convenient and applicable in practice.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Geological
Shiwei Liu, Hui Su, Zhenping Zhang, Xianlun Leng, Chunlai Qu, Jianhe Li
Summary: The determination of the ultimate bearing capacity of a multilayer slope with horizontal stratification has become a controversial issue. This study proposes a method based on limit analysis theory to obtain the ultimate bearing capacity and performs an influence analysis of various parameters. The accuracy of the method is validated through comparisons with numerical simulation and other analytical methods.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
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
Liang Lu, Liang Xiao, Zongjian Wang, Tiantian Tang, Katsuhiko Arai
Summary: Most research has focused on the high-energy impact on the ultimate capacity of ground reinforced embankments, but this study examines the residual characteristics and efficiency of post-impact embankments under low-energy impact. By comparing model tests of two types of embankments and proposing a simplified analytical approach, the study finds that the damage evolution of embankments goes through three phases and the stability calculation method is feasible. It is also noted that the impact location and inclination of blocks significantly affect the deformation and stability of embankments, providing valuable insights for the design of ground reinforced embankments.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Mahdi Karkush, Anwar Jabbar
Summary: Stone columns are commonly used to improve the geotechnical properties of soft soil. This study investigates the effects of different patterns of floating stone columns distribution under a footing on the bearing capacity of soil and the distribution of excess porewater pressure. The results indicate that using floating stone columns significantly increases the ultimate bearing capacity of soft soil and reduces excess porewater pressure and settlement.
JOURNAL OF ENGINEERING RESEARCH
(2022)
Article
Multidisciplinary Sciences
Amir Hamidi, Mohammad Saeid Niknezhad, Farhad Asemi, Marjan Sadrjamali
Summary: Shells are thin-walled structures that achieve stability and bearing capacity through their specific shape. This research investigates the behavior of triangular shell strip footings and flat strip footings under different reinforcement conditions. The results show that decreasing the apex angle of shell footings increases bearing capacity and reduces settlement. The optimal depth of the first geogrid layer in sloped backfill is 3-4 times of that in flat backfill. Using two geogrid layers improves the performance of shell footings. The findings also suggest that shell footings have better settlement behavior compared to flat footings. Design curves are provided for determining the optimal location of geogrid layers for shell footings on flat and sloped backfills.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)