Lateral pressure on piles due to horizontal soil movement

Bauer, Jörg; Kempfert, Hans‐Georg; Reul, Oliver

doi:10.1680/jphmg.15.00005

Cited by 9 publications

(2 citation statements)

References 12 publications

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“…It is believed that the negative pressure occurs 10 Advances in Civil Engineering mainly because P4 is located in the opposite direction of the pile movement and a suction situation occurs, which in turn exhibits negative pressure during the test. e phenomenon is similar to that of Liao et al and Bauer et al in the monopile model test in clay [36,41]. e pore water pressure of P5 continued to accumulate with increasing number of cycles, and the increasing trend slightly decreased.…”

Section: E Cumulativesupporting

confidence: 87%

Experimental Study on Pile‐Soil Interaction Response in Saturated Sand under Long‐Term Horizontal Cyclic Loading

Xing

Duo-yin

Wang

et al. 2021

Advances in Civil Engineering

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To explore the pile-soil interaction response in saturated sand under long-term horizontal cyclic loading, a series of indoor 1 g model tests were carried out with self-made loading equipment. In this paper, the self-made loading system and test program are introduced firstly. Then, the long-term horizontal cyclic loading-induced pile top cumulative displacement, the rotation angle, the mono-pile horizontal cyclic stiffness, the cyclic p-y curve, the pore water pressure, the soil settlement, and cracks around mono-pile are fully studied. Based on the experimental results, the pile-soil interaction response shows a two-stage characteristic with the change in cycle (N), and the short-term effects of horizontal cyclic loading are greater than the long-term effects. In the first 1000 cycles, the cumulative displacement of pile top, the rotation angle of mono-pile, and the pore water pressure could reach more than 90% of the final value. In addition, the cyclic p-y curve obtained by the test is generally smaller than the p-y curve calculated from the API specification, and the soil near the mono-pile will settle with annular cracks under the cyclic loading.

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Section: E Cumulativesupporting

confidence: 87%

Experimental Study on Pile‐Soil Interaction Response in Saturated Sand under Long‐Term Horizontal Cyclic Loading

Xing

Duo-yin

Wang

et al. 2021

Advances in Civil Engineering

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“…As the variation in pixel intensity is crucial in PIV analysis (White et al, 2003;Stanier and White, 2013;Stanier et al, 2016), tracer particles must be used to create artificial textures when performing geotechnical tests on fine-grained soils of uniform color (Take and Bolton, 2011;Kim et al, 2017). Black-dyed sand was used as tracer particles in this PIV analysis (Bauer et al, 2016;Kwak et al, 2020;Wang et al, 2021), which has been proven a good representativeness (>93%) in the movement of particles within the slurry (Wang et al, 2021). Since the tracer particles were randomly sprayed on the contact of the Perspex sheet and slurry sample, they had little effect on the slurry improvement process due to their small amount and high permeability (Wang et al, 2019).…”

Section: Testing Materialsmentioning

confidence: 99%

The effect of PVD layout on the consolidation characteristics of dredged slurry under vacuum preloading

Cai

et al. 2023

Front. Mar. Sci.

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Vacuum preloading coupled with prefabricated vertical drains (PVDs) has been widely used to improve the property of the dredged slurry. However, the effect of PVD layout on slurry consolidation characteristics remains poorly understood. This study conducted two vacuum preloading model tests—with single and dual PVDs. Particle image velocimetry (PIV) was used to directly observe the slurry displacements and strain paths. The test results revealed that the slurry consolidation characteristics were similar under different PVD layouts in the early stage of vacuum preloading. However, in the mid-stage, the effect of dual PVDs led to a significant reduction and increased dispersion of the slurry horizontal displacement. This, in turn, resulted in a thinner clogging zone and a subsequent decrease in vacuum pressure loss. Consequently, the slurry near the PVDs experienced an extended period of consolidation deformation. During the later stage, the single PVD model test exhibited a distinct zone of both vertical and horizontal compression in the slurry, while under dual PVDs, the slurry primarily underwent vertical compression and horizontal extension. The study also provided the relationship between the clogging zone thickness and time, which provided a reference for theoretical consolidation calculations.

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Lateral pressure on pile foundations in cohesive soils due to horizontal soil movements

Bauer,

Reul

2024

Acta Geotech.

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In soft soil layers, piles are frequently loaded laterally by horizontal soil movements. In many cases, the lateral pressure acting on piles due to horizontal soil movements is calculated with empirically or analytically based approaches, respectively. However, most of these design approaches do not consider possible influences on the resulting pile loads. This paper presents the results of model tests and numerical simulations on single piles and pile groups in cohesive soil subjected to lateral loads which were carried out to overcome limitations of available design approaches. Based on extensive small-scale 1 × g-model tests and numerical investigations with the finite element method, influencing factors on the lateral pressure, such as the roughness of the pile–soil interface, the pile size, the pile shape and the pile spacing were identified. A parametric study with the numerical model quantified the most relevant factors influencing the development of lateral pressure on piles due to adjacent surface loads and lead to the development of a simplified analysis approach.

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Lateral pressure on piles due to horizontal soil movement

Cited by 9 publications

References 12 publications

Experimental Study on Pile‐Soil Interaction Response in Saturated Sand under Long‐Term Horizontal Cyclic Loading

Experimental Study on Pile‐Soil Interaction Response in Saturated Sand under Long‐Term Horizontal Cyclic Loading

The effect of PVD layout on the consolidation characteristics of dredged slurry under vacuum preloading

Lateral pressure on pile foundations in cohesive soils due to horizontal soil movements

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