The Pile End Mechanism of Jacked Pile in Layered Soils

Li, Yunong; Liu, Chang; Song, Jian

doi:10.1007/s40098-021-00510-1

Cited by 1 publication

(1 citation statement)

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“…Moreover, pile base capacity decreases if the L/D ratio increases (Figure 10). The same result was observed by Li et al [74] in model pile loading experiments in sandy soils. In theoretical methods, only the internal friction angle of the soil and the effective stress are considered while calculating the pile point resistance.…”

Section: Point Resistancesupporting

confidence: 89%

Effect of Pile Geometry and Soil Saturation Degree on Point Bearing Capacity for Bored Piles in Sands

Yenginar,

Fidan,

Olgun

2024

KONJES

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In the present paper, an experimental study was conducted to determine the factors affecting the point bearing capacity of pile foundations constructed in dry and saturated sandy soils. Model piles were installed as reinforced concrete bored piles cast-in-situ. Model pile foundations of various geometries resting at different depths in homogeneous sand of different saturation degrees (%0-100) were loaded statically to failure. The test results showed that the bearing capacity of piles did not significantly affect by the loading rate. At most 10% difference was observed in pile bearing capacity when the loading rate was between 0.7 and 2.5 mm/min. Subsequently, the load bearing capacities of the piles were determined at a specified constant loading rate. The point and total capacities of the piles were measured separately in the experiments, then test results were compared with theoretical values. Pile point capacities provided from pile load tests are smaller than the theoretical values. The differences between experimental and theoretical results have been attributed to the Nq values. The Nq values not only dependent on the internal friction angle of the soil but also the saturation degree of the soil, the pile diameter, and the effective stress. Nq values decrease since the pile length/pile diameter ratio increases.

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Section: Point Resistancesupporting

confidence: 89%