Evaluation of Lateral Load Capacity of Bored Piles in Weathered Granite Soil

Choi, Ho Jin; Lee, Seung-Rae; Park, Hyun-Il; Kim, Daehong

doi:10.1061/(asce)gt.1943-5606.0000831

Cited by 20 publications

(7 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several studies in the technical literature which deal with large-scale enlarged base piers or belled piers resisting the uplift load in sand (Choi et al 2013;Gaaver 2013). They stated that the breakout factors in sand are function of the anchor shape, embedment ratio and the shearing resistance of the soil.…”

Section: Introductionmentioning

confidence: 99%

The uplift load capacity of an enlarged base pier embedded in dry sand

et al. 2014

View full text Add to dashboard Cite

The purpose of this research is to determine the capability of (and the factors which affect the performance of) an enlarged base pier in resisting uplift capacity. Experiments were conducted in the reinforced bin box of an enlarged base pier with a shaft diameter ranging from 30 to 50 mm, base diameters between 75 and 150 mm and base angles of α = 30°, α = 45°and α = 60°. Tests were conducted in both loose and dense sand packing. A failure mechanism was studied in a glass box for loose and dense sand packing. A dry sand with a unit weight of γ d = 14.80 kN/m 3 and γ d = 17. 0 kN/m 3 was achieved for loose and dense packing, respectively. Increasing the bell angle and shaft diameter would result in a decrease of the net uplift capacity and failure displacement. This is due to the reduction in the amount of the sand column above the bell that resists the uplift of the pile. Failure displacements at a constant base diameter generally increased considerably with the increase of the embedment ratio but decreased with the increment of the sand density. It is thus apparent that the shaft diameter, bell diameter and bell angle are geometric factors which, together with the embedment ratio and the sand density, should be taken into account in the design of enlarged base piers.

show abstract

Section: Introductionmentioning

confidence: 99%

The uplift load capacity of an enlarged base pier embedded in dry sand

et al. 2014

View full text Add to dashboard Cite

show abstract

“…In this case, the good estimate of the lateral pile capacity relies on the accurate measurement of the soil-water retention behaviour. Conversely, a higher discrepancy (>20%) between measured and predicted values is observed for two of the three piles tested by Choi et al [14]. This difference may be due to the lack of information about the variation of suction with depth, which was not provided by the authors.…”

Section: Validation Against Field Datamentioning

confidence: 72%

“…The proposed method has been validated against field tests on free head short rigid piles embedded in three distinct unsaturated soils, i.e. a weathered granite [14], a sand with clay and silt [15] and a fine sand [16], . In all cases, the water table was deeper than the toe of the pile (𝑧 𝑤 > 𝐿) so that the unsaturated reacting depth coincides with the pile length (i.e.…”

Section: Validation Against Field Datamentioning

confidence: 99%

See 1 more Smart Citation

An analytical method to evaluate the capacity of laterally loaded piles in unsaturated soils

2023

View full text Add to dashboard Cite

The growing pressures of climate change, increased usage and unprecedented geo-hazards impose a modification in the way civil engineering structures are designed and constructed. This isparticularly true for geotechnical works, which are very sensitive to changes of environmental conditions. For instance, the response of a pile under lateral loading is strongly influenced by the stiffness and strength of the first few metres of soil below the surface, which are often partly saturated. To consider this effect, the present paper describes an analytical method, which extends the well-known Broms approach to predict thelateral capacity of piles in unsaturated soils. More specifically, the proposed method considers the combined effects of the position of the ground water table and the extra strength of the partially saturated soil above it. Compared to Broms approach, the solution introduces four additional non-dimensional parameters that relate the soil-water retention behaviour to the geometry of the pile. The method provides a direct evaluation of the lateral pile capacity in partly saturated soils, which can be used as a basis for more accurate design.

show abstract

“…Designing methods for IAB assume that soil spring exhibits equal linear response despite the widely-known fact that it is nonlinear and hysteretic. Current soil resistance methods to predict soil resistance is, API methods, Hansen's and Broms approaches offer varying predictions of soil resistance for the similar earth environments [88][89][90][91]. Of these ways, the foremost refined square measure API ways utilized by the industry in nonlinear soil modeling for lateral pile loading.…”

Section: Api Design Methodsmentioning

confidence: 99%

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Naji¹,

Firoozi

Firoozi³

2020

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

Bridges are one of the most critical parts of transportation networks that may suffer damages against earthquakes. Also, seismic responses of most bridges are significantly influenced by soil-structure interaction effects. Taking out expansion joints in the bridges may cause many difficulties in design and analysis due to the complexity of soil-structure interaction and nonlinear behavior. The secondary loads on an IAB include seismic load, temperature variation, creep, shrinkage, backfill pressure on back wall and abutment, all of which cause superstructure length and stress variations in girder changes. The purpose of this study is to recognize the most effective parameters of analysis IABs. Findings show that the backfill material behind the IABs has a significant effect on the performance of IABs. Using a compressible material behind the abutments would enhance the in-service performance of IABs. Finally, behaviour of abutment may be greatly affected by thermal load and soil pressure. Thermal expansion coefficient significantly influences girder axial force, girder bending moment, and pile head/abutment displacement.

show abstract

Evaluation of Lateral Load Capacity of Bored Piles in Weathered Granite Soil

Cited by 20 publications

References 43 publications

The uplift load capacity of an enlarged base pier embedded in dry sand

The uplift load capacity of an enlarged base pier embedded in dry sand

An analytical method to evaluate the capacity of laterally loaded piles in unsaturated soils

A Review: Study of Integral Abutment Bridge with Consideration of Soil-Structure Interaction

Contact Info

Product

Resources

About