Axial and lateral load transfer of fibre-reinforced polymer (FRP) piles in soft clay

Valez, Juan Giraldo; Rayhani, Mohammad T.

doi:10.1080/19386362.2016.1198109

Cited by 13 publications

(11 citation statements)

References 17 publications

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“…The soil condition is an essential component that must be addressed for FRP piles because piles are used to support massive constructions, yet most of the works discussed over FRP piles and do not include soil effects. In reality, there are fewer studies on FRP heaps than on traditional piles [30][31][32][33][34][35][36], and even fewer studies evaluate the influence of soil when examining FRP piles. The research among FRP piles with varying load regimes is not necessary, leaving a gap [35].…”

Section: Introductionmentioning

confidence: 99%

“…In reality, there are fewer studies on FRP heaps than on traditional piles [30][31][32][33][34][35][36], and even fewer studies evaluate the influence of soil when examining FRP piles. The research among FRP piles with varying load regimes is not necessary, leaving a gap [35]. Furthermore, due to their relative lack of rigidity, FRP piles necessitate greater care during construction than traditional piles.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of reinforced concrete piles wrapped with fibre reinforced polymer under vertical load

Jose

Khazaleh²,

Prakash³

et al. 2023

Matéria (Rio J.)

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This research mainly focuses on the nature of Fiber-Reinforced Polymers (FRP) wrapped piles for the axial compression load. Normally, the degradation of Reinforced Cement Concrete (RCC) structures occurred due to corrosion, inadequate quality materials, aging, live load increments, fatigue, damages and deterioration, and so forth. RCC pile foundations are commonly affected by the above reasons. So, these structures can be strengthened with suitable methods such as jacketing, stitching, overlaying, sealing, grouting, coating, Near Surface Mounted (NSM) systems, FRP wrapping, repairing, and blanketing. FRP wrapping is well suited for strengthening pile structures because of its easy application, and this method is done without using heavy tools and skilled labor. Due to its being non-metallic, FRP reinforcing has desirable properties such as high resistance to chemicals as well as heat, flexibility, large tensile strength, permeability, and also no oxidation. Thus, FRP wrapping was selected as the chosen approach for this ongoing research. In this study, we apply an axial compression load as well as a skin friction condition to a pile member that has been modified to assess its performance and behavior.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study of reinforced concrete piles wrapped with fibre reinforced polymer under vertical load

Jose

Khazaleh²,

Prakash³

et al. 2023

Matéria (Rio J.)

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“…Compared with conventional steel bars, FRP has extraordinary corrosion resistance and thermal expansion coefficient, which is close to that of concrete, making it an ideal material to replace steel in marine or coastal infrastructures 7,8 . Besides, it has been reported that the ultimate skin frictional resistance of FRP piles was 5%−40% higher than the steel piles 9,10 . With the promotion of FRP in foundations, the interface properties between FRP structure and soil have received a lot of attention in recent years due to their critical impacts on the integrity and stability of the structure‐soil system.…”

Section: Introductionmentioning

confidence: 99%

“…7,8 Besides, it has been reported that the ultimate skin frictional resistance of FRP piles was 5%−40% higher than the steel piles. 9,10 With the promotion of FRP in foundations, the interface properties between FRP structure and soil have received a lot of attention in recent years due to their critical impacts on the integrity and stability of the structure-soil system.…”

Section: Introductionmentioning

confidence: 99%

FRP–soil interfacial mechanical properties with molecular dynamics simulations: Insights into friction and creep behavior

Yin

Yuan-Yuan

2023

Num Anal Meth Geomechanics

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The fiber‐reinforced polymer (FRP) has attracted much attention in civil engineering due to its durability and cost‐effectiveness. The soil–FRP structure interface plays an essential role when the FRP is adopted in geotechnical engineering, but its fundamental interfacial behavior remains unclear. In the present study, the atomistic models of silica representing sand, water film representing the lubricated condition, and cross‐linked epoxy representing FRP are constructed to investigate the FRP–sand interfacial properties at the nano‐scale through molecular dynamics (MD) simulations. The epoxy model geometry and forcefield are first validated by comparing the thermodynamic and mechanical parameters with experimental and simulation measurements. The silica–epoxy interfacial tribological and rheological behavior is then explored by conducting friction and creep simulations under dry and lubricated conditions. The friction force has been found linearly dependent on the normal load and increases with the sliding velocity while decreasing against water content. The modified Amontons law for the adhering surface could describe the silica–epoxy interfacial friction well. The shear stress level influences the creep characteristics with primary, secondary, and tertiary (or rupture) creep modes. The results of this study at the nano‐scale can be further developed to enhance the current contact laws of sand–FRP structure in micromechanics‐based modeling approaches.

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“…The geometry of the assessed micro-piles was similar to that described for the reinforcing elements within the current paper. Pando et al [ 13 ] and Valez et al [ 25 ] have tested and renovated the structures of composite piles. Valez et al, as well as fiberglass structures, also tested carbon fiber piles in stabilized and non-stabilized soft soils.…”

Section: Introductionmentioning

confidence: 99%

Settlement of Soil Reinforced with Vertical Fiberglass Micro-Piles

et al. 2022

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This article is dedicated to investigating the properties of soil after its reinforcement with fiberglass elements through large-scale laboratory plate-load tests of various samples that varied in the numbers and lengths of the reinforcing elements. The investigation of the vertical elements considered the diameter increase at the bottom toe by using widening washers. The results were compared relative to each other and to the theoretical calculation results. The theoretical calculations for the settlements were undertaken based on the authors’ proposed method. The method considers the number, shape, area and material of the strengthening elements using a pre-proposed reinforcement area factor µ. This pre-established factor was calculated with reference to the elements’ geometry—the diameter of the vertical elements and the bottom’s washer diameter—which determined the reinforcement area. A comparison between the reinforced and reference soft sandy soil samples indicated a 25% increase in the deformation modulus after the reinforcement process at a pressure of 25 kPa. Samples with µ ranging from 1.20 to 1.43 were 55–65% stiffer than samples with µ equal to 0.69 at a pressure of 100 kPa. The comparative analysis of the calculated results and the actual laboratory PLT test results was adequate for use for further development.

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Axial and lateral load transfer of fibre-reinforced polymer (FRP) piles in soft clay

Cited by 13 publications

References 17 publications

Experimental study of reinforced concrete piles wrapped with fibre reinforced polymer under vertical load

Experimental study of reinforced concrete piles wrapped with fibre reinforced polymer under vertical load

FRP–soil interfacial mechanical properties with molecular dynamics simulations: Insights into friction and creep behavior

Settlement of Soil Reinforced with Vertical Fiberglass Micro-Piles

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