Forensic analysis of a pile foundation failure

Gayarre, Fernando López; González‐Nicieza, C.; Álvarez‐Fernández, M.I.; Álvarez-Vigil, A.E.

doi:10.1016/j.engfailanal.2009.09.008

Cited by 13 publications

(5 citation statements)

References 6 publications

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“…In most of the model experimental studies in the literature, cohesionless soils with a grain size smaller than 1mm were used [20][21][22][23][24][25][26][27][28][29][30]. However, in nature, the soils are mostly composed of clay and sand mixtures.…”

Section: Importance Of the Studymentioning

confidence: 99%

Experimental Evaluation of Load Distribution between Piles in Case of Block Failure

Aksoy

Ozpolat

2023

Applied Sciences

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In this study, the load distribution of the piles in the pile group was investigated in the case of the pile raft foundations failure under the effect of vertical loads in cohesive soils. For this purpose, loading tests were carried out on model pile groups in the laboratory. In addition, the effects of these conditions on the load distribution between the piles were examined by changing the pile spacing and soil properties. As a result of the experiments, it was determined that the piles in the corner region carried more load than the ones in the center region in small settlement amounts as in the literature. However, it has been determined that as the amount of settlement in the pile foundation increases, the soil between piles behaves like a block and approaches failure, and the piles in the center region of the pile group carry more load. As a result of excessive settlement, a fracture surface formed around the block and therefore the corner piles of the block began to carry less load. It has been determined that failure analyses should be performed considering the load carried by the corner piles after failure due to excessive settlement.

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Section: Importance Of the Studymentioning

confidence: 99%

Experimental Evaluation of Load Distribution between Piles in Case of Block Failure

Aksoy

Ozpolat

2023

Applied Sciences

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“…Additionally, due to uncertainties about the underground engineering, determining the exact causes of the impacts on neighboring buildings during excavation is not easy, as it may be influenced by geological conditions. This can lead to incidents such as a crack [12][13][14], damage [15], and dumping [6] in buildings during the construction process.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Influence of Deep Excavation on Nearby Pile Foundation Building

Wang,

Yang,

Guo

et al. 2023

Buildings

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In this paper, a numerical simulation is used to establish a three-dimensional model, which considers the height of buildings, the relative position between buildings, and foundation pits. These were studied in detail to investigate the changes in settlement of adjacent buildings and the displacement and internal force of piles caused by deep foundation pit excavation. The results indicate that the number of floors in the building, along with the angle and distance between the building and the excavation pit, have a significant impact on the settlement of the building and the deformation and internal force variation in the piles. For example, when D = 0.1 H, with the increase in the number of floors, the increase in the bending moment of pile 1 at the pile shaft is 62.63 kN·m, and the increase in the bending moment at the pile head is 224.72 kN·m. At this point, the maximum horizontal displacement of the pile shaft occurs at approximately 1.27 H. When θ = 45∘, the maximum difference between the maximum and minimum deformations of the building is 9.71 mm. When D ≤ 1.0 H, the majority of the building is in the primary influence range of surface settlement behind the wall, and the building undergoes a combined deformation of ‘upper convex’ and ‘concave’. When D > 1.0 H, the building predominantly resides in the secondary influence range, and the building undergoes a deformation of ‘upper convex’.

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“…Structural integrity and collapse prevention are very important aspects of civil engineering. A crucial goal in this field is to mitigate the risk of foundation downfalls which may entail loss of stability and even sudden failures of structures and infrastructures [1][2][3]. Different causes may trigger the progressive collapse of a building, the downfall of a bridge pile, or sinkholes.…”

Section: Introductionmentioning

confidence: 99%

A Satellite Data Mining Approach Based on Self-Organized Maps for the Early Warning of Ground Settlements in Urban Areas

Montisci

Porcu

2022

Applied Sciences

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Structural failure prevention is a crucial issue in civil engineering. The causes of structure or infrastructure collapse include phenomena that slowly deform the ground and could affect the stability of foundations such as differential settlements, subsidence, groundwater changes, slope failure, or landslides. When large urban areas need to be monitored, such phenomena are hard to be mapped by means of classical structural health monitoring methods due to the unaffordable quantity of in situ measurements these methods would entail. A very effective alternative is exploiting multitemporal interferometric synthetic aperture radar (MT-InSAR) displacement timeseries which would enable the monitoring of wide geographical areas over a weekly basis and extended spatial coverage. Analyzing the enormous amount of data produced by MT-InSAR may help to assess the time evolution of phenomena but can barely highlight “anomalous” ground deformations in time, to prevent likely structural failure. This paper proposes a method which analyzes the InSAR data through an unsupervised learning paradigm with the purpose of detecting critical events at their early stage. On the basis of similarities among time sequences, this method allows the finding of precursors of anomalous ground settlement behaviors, the correct framing of which should be directed to specialist evaluation and in situ inspections.

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Forensic analysis of a pile foundation failure

Cited by 13 publications

References 6 publications

Experimental Evaluation of Load Distribution between Piles in Case of Block Failure

Experimental Evaluation of Load Distribution between Piles in Case of Block Failure

Numerical Analysis of the Influence of Deep Excavation on Nearby Pile Foundation Building

A Satellite Data Mining Approach Based on Self-Organized Maps for the Early Warning of Ground Settlements in Urban Areas

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