Response of vertical pile group subjected to horizontal cyclic load in soft clay

Basack, Sudip

doi:10.1590/s1679-78252010000200001

Cited by 24 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cracks will occur in the soil at the front side of the pile, while the clay at the rear side suffers from heave, which continues to produce a gap around the pile. This behavior well agreed with the results presented by Basack [6]. 2.…”

Section: Discussionsupporting

confidence: 93%

See 1 more Smart Citation

Behavior of Pile Group Subjected to Cyclic Lateral Loading in Contaminated Soils

Karkush¹

2016

geomate

View full text Add to dashboard Cite

ABSTRACT:The impact of soil contamination on the behavior of a pile group driven into clayey soils is the subject of this study. A mechanical model had been manufactured to study the behavior of pile group (2×2) subjected to one-way cyclic lateral loading, and embedded in contaminated soils. The tests were performed on a free headed pile group with two ratios of eccentricity to embedded length (e/L) equal to 0.25 and 0.5. The intact soil samples were obtained from AlMusayib city in the center of Iraq, while the industrial wastewater is a byproduct discharged from Al-Musayib thermal electric power plant, which is located in the same region where the soil samples have been obtained. The intact clayey soil samples were contaminated synthetically with four percentages of (10, 20, 40 and 100) % by weight of distilled water used in the soaking process of soil samples, which continued for 30 days. On the basis of the results of tests, the different percentages of contaminants have nonlinear effects on the lateral load-displacement relation of the pile group. The lateral resistance of pile group decreased with increasing the concentration of contamination in the soil. The lateral bearing capacity of pile group decreased by (4-31)% for e/L equals 0.25 and 0.5, and the ratio of permanent displacement to the total displacement increased by (18-33)% with increasing the percentage of contamination in the soil. The efficiency of the pile group was (81-87)% from one single pile group.

show abstract

Section: Discussionsupporting

confidence: 93%

“…Basak [6] studied the response of pile group (2×2) subjected to cyclic lateral load in soft clay. The experimental model was designed in such a manner that the cyclic loading test could be performed under both conditions, load-controlled and displacement-controlled modes.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Pile Group Subjected to Cyclic Lateral Loading in Contaminated Soils

Karkush¹

2016

geomate

View full text Add to dashboard Cite

show abstract

“…Furthermore, the pile degradation factor (D p ) decreases with an increase in L c following a curvilinear pattern with an increasing slope. This observation is reasonable because an increase in the value of the torsional cyclic amplitude or cyclic loading level is likely to cause the failure of more number of elements (which is initiated by the rapid yielding of soil adjacent to the soil-pile interface) (Basack, 2010b). It must be noted that the reduction factor R f shows insignificant effect on the soil-pile interactive performance.…”

Section: Parametric Studies: Analysis and Interpretationmentioning

confidence: 86%

Piles Subjected to Torsional Cyclic Load: Numerical Analysis

Nimbalkar

Punetha

Basack

2019

Front. Built Environ.

View full text Add to dashboard Cite

Pile foundations supporting large structures (such as high-rise buildings, oil drilling platforms, bridges etc). are often subjected to eccentric lateral load (in addition to the vertical loads) due to the action of wind, waves, high speed traffic, and ship impacts etc. The eccentric lateral load, which is usually cyclic (repetitive) in nature, induces torsion in the pile foundation. This paper presents a numerical model based on boundary element approach to study the performance of a single pile subjected to the torsional cyclic load. The model is initially validated by comparing it with the experimental data available from the literature. Thereafter, the model has been utilized to conduct a parametric study to understand the influence of the torsional cyclic loading parameters on the axial pile capacity. The results indicated that the model is able to capture the degradation in the axial pile capacity due to the torsional cyclic loading with a reasonable accuracy. Moreover, the parametric study showed that the frequency, amplitude and number of cycles play a significant role in the torsional cyclic response of the pile. The present study is essential for the development of design guidelines for pile foundations subjected to torsional cyclic load.

show abstract

“…The Authors agree that preparation of a perfectly uniform test bed of clay in the laboratory should be done by remoulding the clay-water mixture at moisture content slightly higher to the liquid limit and then consolidating it to the desired state (Som 1993, Al-Mhaidib 2006a, 2007, although the water content is progressively reduced due to consolidation. The other alternative is to fill up and compact the test tank in layers with the clay water mixture (Narasimha , Basack 2010, Chandrasekaran et al 2010. It has been observed that the variation of the strength and stiffness of the remoulded test bed in the latter method is insignificant.…”

Section: Laboratory Model Testsmentioning

confidence: 99%

Performance of laterally loaded piles considering soil and interface parameters

Fatahi¹,

Basack²,

Ryan³

et al. 2014

Geomech. Eng.

View full text Add to dashboard Cite

To investigate the soil-pile interactive performance under lateral loads, a set of laboratory model tests was conducted on remoulded test bed of soft clay and medium dense sand. Then, a simplified boundary element analysis had been carried out assuming floating pile. In case of soft clay, it has been observed that lateral loads on piles can initiate the formation of a gap, soil heave and the tension crack in the vicinity of the soil surface and the interface, whereas in medium dense sand, a semi-elliptical depression zone can develop. Comparison of test and boundary element results indicates the accuracy of the solution developed. However, in the boundary element analysis, the possible shear stresses likely to be developed at the interface are ignored in order to simplify the existing complex equations. Moreover, it is unable to capture the influence of base restraint in case of a socketed pile. To bridge up this gap and to study the influence of the initial stress state and interface parameters, a field based case-study of laterally-loaded pile in layered soil with socketed tip is explored and modelled using the finite element method. The results of the model have been verified against known field measurements from a case-study. Parametric studies have been conducted to investigate the influence of the coefficient of lateral earth pressure and the interface strength reduction factor on the results of the model.

show abstract

Response of vertical pile group subjected to horizontal cyclic load in soft clay

Cited by 24 publications

References 9 publications

Behavior of Pile Group Subjected to Cyclic Lateral Loading in Contaminated Soils

Behavior of Pile Group Subjected to Cyclic Lateral Loading in Contaminated Soils

Piles Subjected to Torsional Cyclic Load: Numerical Analysis

Performance of laterally loaded piles considering soil and interface parameters

Contact Info

Product

Resources

About