Investigation on determining uplift capacity and failure mechanism of the pile groups in sand

Emirler, Buse; Tolun, Mustafa; Yildiz, Abdulazim

doi:10.1016/j.oceaneng.2020.108145

Cited by 19 publications

(10 citation statements)

References 28 publications

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“…To evaluate and determine the soil characteristics of the study area, the obtained soil research data was compared with previous study findings and standard codes of ASTM 31 . For a broad understanding of those standards, their references can be explored 30 , 32 , 33 . The analysis identified three main soil types in the research region: sandy soil, gravel soil, and fine-grained soil.…”

Section: Methodsmentioning

confidence: 99%

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Chimdesa,

Jilo

et al. 2023

Sci Rep

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Foundation plays a vital role in weight transfer from the superstructure to substructure. However, foundation characteristics such as pile group, piled raft, and footing remain unfolded due to their highly non-linear behaviour in different soil types. Bibliography analysis using VOSvierwer algorithm supported the significance of the research. Hence, this study investigates the load-bearing capacity of different types of foundations, including footings, pile groups, and piled rafts, by analyzing experimental data using finite element tools such as PLAXIS 2D and GEO5. The analysis involves examining the impact of various factors such as the influence of surcharge and the effect of different soil types on the load-bearing capabilities of the different types of foundation. For footing, parametric investigations using PLAXIS 2D are conducted to explore deformational changes. Pile groups are analyzed using GEO5 to assess their factor of safety (FOS.) and settling under various criteria, such as pile length and soil type. The study also provides insight into selecting the right type of foundation for civil engineering practice. Findings showed that different soil types have varying deformational behaviours under high loads with sandy soil having less horizontal deformation than clayey soil. Also, it was observed that increasing the pile thickness by 50% resulted in a reduction of 13.88% in settlement and an improvement of 16.66% in the FOS. In conclusion, this study highlights the importance of professionalism, exceptional talent, and outstanding decision-making when assessing the load-bearing capabilities of various foundation types for building structures.

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Section: Methodsmentioning

confidence: 99%

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Chimdesa,

Jilo

et al. 2023

Sci Rep

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show abstract

“…If the length of the pile is small and the critical sliding surface is too deep, the expected reinforcement effect will not be achieved. If the pile is too long, the construction difficulty will increase and materials will be wasted, which will lead to local cracking of the pile (Emirler et al 2020). The design pile length is regarded as an optimization factor affecting the design of anti-slide pile.…”

Section: Influence Of Design Parameters Of Slope Reinforced By Anti-slide Pilementioning

confidence: 99%

Optimal Design and Numerical Analysis of Soil Slope Reinforcement by a New Developed Polymer Micro Anti-slide Pile

Wang

Han

et al. 2021

Preprint

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As a new material, polyurethane polymer has been widely used in engineering in recent years due to the excellent engineering mechanical properties. Based on the characteristics of this material, a multi pipe grouting micro anti-slide pile is proposed, which is formed by using polymer slurry as grouting material. Compared with traditional anti-slide pile, the polymer micro pile has the advantages of strong applicability, no water reaction, small disturbance, fast construction, economy and durability. As a flexible retaining structure, polymer micro-piles can strengthen the slope by cooperating with the forces. However, there is no report on the reinforcement of slope by polymer micro piles at present. In this paper, a three-dimensional multi row polymer micro piles model for slope reinforcement considering different embedded depth and pile location is established. Safety factor, thrust force of landslide behind pile, length of pile and mises stress are taken as four factors to evaluate reinforcement effect, the optimal reliability of polymer micro anti-slide pile for slope reinforcement is evaluated by giving different weight values to each factor through multi factor comprehensive evaluation method. The safety factor of slope (Fs), landslide thrust behind pile and mises stress of pile are analyzed under different embedded depth (le) and pile position (px). The results show that the best embedded depth is about1/8 − 1/12 of the horizontal length of the landslide behind the pile when multi row polymer micro piles are used to reinforce the slope; the optimum position of pile arrangement is 0.55–0.65 times the slope length from the top of the slope.

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“…At present, uplift piles, as the primary form of uplift foundations, have been widely used in engineering construction. 5,6 However, it is worth noting that the traditional uplift pile construction often significantly impacts adjacent projects due to the limited urban soil resources, and it is difficult for piles to adapt to the narrow construction site. At the same time, the overall stiffness of the uplift pile is relatively minor, and the pile body often enters the bearing layer deep to ensure the bearing capacity of the foundation, resulting in a waste of materials.…”

Section: Introductionmentioning

confidence: 99%

“…In that case, the insufficient bearing capacity of the foundation will lead to cracking and instability of the superstructure, which will lead to serious engineering accidents. At present, uplift piles, as the primary form of uplift foundations, have been widely used in engineering construction 5,6 . However, it is worth noting that the traditional uplift pile construction often significantly impacts adjacent projects due to the limited urban soil resources, and it is difficult for piles to adapt to the narrow construction site.…”

Section: Introductionmentioning

confidence: 99%

Uplift behavior of nodular diaphragm wall: Experiment and theory

Wu,

Zhang,

et al. 2024

Num Anal Meth Geomechanics

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The nodular diaphragm wall (NDW) is a novel foundation that can provide significant uplift load resistance compared to a typical diaphragm wall foundation. With the advantages of low noise, cost‐effectiveness, high work efficiency, and construction abilities close to existing buildings, NDW has excellent engineering application prospects in urbanization construction. However, the scarce knowledge on the uplift resistance, failure mode, and calculation method of the NDW has hindered its application in practice. In this paper, indoor model tests based on particle image velocimetry (PIV) technology are carried out to investigate the uplift behavior of three NDW models with different amounts and locations of nodular parts. The load transfer mechanisms of the three NDW models are discussed in detail, and special attention is given to the failure mode analysis. In addition, a theoretical analysis is implemented based on the load transfer approach. The transfer function and associated critical parameters are discussed in detail. Accordingly, an iterative procedure is proposed to interpret the load transfer information of an uplift NDW in multilayered soils under different loading levels. The findings derived in this paper are helpful to the uplift deformation, capacity calculation, and design of NDW in practical engineering.

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Investigation on determining uplift capacity and failure mechanism of the pile groups in sand

Cited by 19 publications

References 28 publications

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Numerical analysis of pile group, piled raft, and footing using finite element software PLAXIS 2D and GEO5

Optimal Design and Numerical Analysis of Soil Slope Reinforcement by a New Developed Polymer Micro Anti-slide Pile

Uplift behavior of nodular diaphragm wall: Experiment and theory

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