Experimental Study on Anti-frost Jacking of Belled Pile in Seasonally Frozen Ground Regions

Huang, Xubin; Yu, Shengping

doi:10.1007/978-3-319-97115-5_102

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…The follows research objectives were formulated: The frost heave hazard has been currently prevented by placing piles to greater or by layer-by-layer ground freezing [27]. The other method for frost jacking prevention is based on using specially designed piles: screw piles [28] and belled piles [29] of different configurations. An alternative approach is to coat the pile surface with various protective compounds (epoxy or polyurethane resin, zinc, etc.…”

Section: Introductionmentioning

confidence: 99%

Reline Jacket: Efficient Reduction of Frost-Heave Uplift of Piles in Warming Permafrost

Alyavdin¹,

Belyakov²,

Levin³

et al. 2022

Geosciences

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Air temperature in the Northern Hemisphere has been progressively warming in the recent decades, and the ground temperatures have increased correspondingly. The air temperature increasing due to the climate change induces degradation of permafrost and frost heaving activation. The frost heaving forces cause unevenly distributed damaging displacement of foundations and thus poses problems to the development of Arctic regions. Frost-heave uplift forces can be reduced by protecting piles with an OSPTReline (or Reline) polymer heat-shrinkable jacket. The interaction of heaving soil with a pile covered with the Reline jacket is modeled in laboratory to estimate the uplift force and the related shear strength of frozen soil along the soil-pile adfreeze surface at temperatures from −6 to −1 °C. The data are obtained for silty sand and silty clay soils and mortar (1:5 cement-sand mixture). The experiments show that frost-heave uplift forces on Reline-protected piles are 52% to 85% lower than on uncovered steel piles (steel grade 09G2S—analog to European steel grade S355JR), depending on soil type and temperature.

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Section: Introductionmentioning

confidence: 99%

Reline Jacket: Efficient Reduction of Frost-Heave Uplift of Piles in Warming Permafrost

Alyavdin¹,

Belyakov²,

Levin³

et al. 2022

Geosciences

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Modeling a reverse taper pile for frost heave conditions

Tretiakova

2021

J. Phys.: Conf. Ser.

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The research addresses the issue mathematical modeling of effective pile for construction in cold regions on the base of existing experimental studies. The problem of piles uplift by frost heave is critical and results in damage to overlying structures. Previous research and practice has shown that the existing methods of frost heave protection involving pile length extension lead to piles cost increase. It is assumed that a novel approach to the piles design is needed. The paper proposes directional reducing the influence of heaving soil on the reverse taper pile due to pile design features without its length extension. Positive effects which arise in this connection have been studied. The devised approach was based on mathematical modeling techniques. Heaving soil-pile interaction model has been developed. The study conducts an investigation of the pile frost heaving phenomenon that occurs in the annular space surrounding the pile. Particular attention has been given to working out pile geometry equations. It is concluded that the pile geometrical features developed by the devised mathematical modeling techniques allow to effectively reducing the frost heave influence. We can foresee that the research findings and the approach implementation will entail the reduction of construction costs in cold environments.

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A stress-strain state analysis of the road transport works foundations on seasonally freezing soils

Permikin

Ovchinnikov

Gricuk

2020

Russian journal of transport engineering

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This article discusses the road transport works foundations when they are located in the seasonally freezing soils zone. Some culvert aqueduct utilized structures were considered and analyzed as an example, in the scope of most common structures on the road network and that also has an insignificant weight. Some constructive solutions disadvantages of these pipes were pointed out. It is noted that the operational characteristics of nonfrost-susceptible soil decrease in the watercourse filtering process and settling small particles and reported the dependence of the relative soil frost boil on the fine aggregate percentage. As an example of the frost boil forces influence, a typical culvert aqueduct design is considered. The calculation of axial and tangential heaving forces that affect the crown of tube is performed, assuming that the bedding soil is contaminated. Based on the calculation, rise calculated value dependence graphs of the unstressed base on the soil dampness and the heaving soil thickness, and the heaving pressure on the soil dampness are presented here. Due to the insufficient value of the forces holding back against lifting, possible negative consequences of the frost boil impact forces are presented, this affects not only the culvert aqueduct operational characteristics but also the roadbed smoothness and traffic safety. Thus, the need for additional measures to prevent soil swelling under the pipe head is justified. Recommended measures to prevent excessive deformations during frost boil, as well as modern aspects of the development of such technologies, are considered. Conclusions are made about their applicability and feasibility in relation to small artificial structures of transport infrastructure.

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Experimental Study on Anti-frost Jacking of Belled Pile in Seasonally Frozen Ground Regions

Cited by 3 publications

References 1 publication

Reline Jacket: Efficient Reduction of Frost-Heave Uplift of Piles in Warming Permafrost

Reline Jacket: Efficient Reduction of Frost-Heave Uplift of Piles in Warming Permafrost

Modeling a reverse taper pile for frost heave conditions

A stress-strain state analysis of the road transport works foundations on seasonally freezing soils

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