Behavior of vertical and batter piles under lateral, uplift and combined loads in non-cohesive soil

Bajaj, Pankaj; Yadu, Laxmikant; Chouksey, Sandeep Kumar

doi:10.1007/s41062-019-0242-z

Cited by 14 publications

(3 citation statements)

References 37 publications

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“…The diameter of the model pile was only 8 mm, and the scale effect cannot be ignored. Pankaj et al [21] applied lateral, uplift, and combined loads to vertical and batter pile groups in a model test and discovered that the negative batter pile with a length-todiameter ratio of 38 and an inclination angle of 35° exhibited the largest bearing capacity under various load conditions. Ghazavi et al [22] proposed an analytical solution to explore the static pile-soil-pile interaction of two pile groups, where the piles and the soil medium were assumed to be linearly elastic.…”

Section: State Of the Artmentioning

confidence: 99%

Effect of Inclination Angle on the Response of Double-row Retaining Piles: Experimental and Numerical Investigation

Ye¹,

Wang²,

Huang

et al. 2020

Teh. vjesn.

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The excavation depth of foundation pits has been increasing along with the continuous development of underground space and high-rise buildings. As a result, traditional double-row vertical piles cannot meet the ground settlement and deflection requirements. This study proposed a double-row pile optimization method to extend the suitability of double-row retaining piles to greater excavation depth. The optimization model was established by adjusting the inclination angle of the front and rear piles. Physical scale model tests were performed to analyze the effect of the inclination angle on the pile head displacements and bending moments during excavations and step loadings using three schemes, namely, traditional double-row piles with vertical piles, double-row contiguous retaining piles with batter pile in the front row, and double-row contiguous retaining piles with batter pile in both rows. Numerical simulations were also conducted to verify the effectiveness of the inclination angle adjustment in optimizing the double-row piles. Results indicate that the increase in the displacement and bending moment of the double-row contiguous retaining batter piles is not evident during excavation and step loading when compared with those of the double-row vertical piles and the double-row contiguous retaining piles with batter pile in the front row. Thus, double-row contiguous retaining batter piles can be used in deep foundation pits. The tilt angle is also excessively small to reduce the lateral displacement of the foundation pit, and the optimal tilt angle is 8°-16°. Although the embedment depth can influence the deformation of the double-row contiguous retaining batter piles significantly, a critical embedment depth may be reached. The findings of this study can provide references for the optimization of double-row piles in foundation pits.

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Section: State Of the Artmentioning

confidence: 99%

Effect of Inclination Angle on the Response of Double-row Retaining Piles: Experimental and Numerical Investigation

Ye¹,

Wang²,

Huang

et al. 2020

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…Several investigators have given well-established theories for evaluating piles and pile groups behavior under different independent loading conditions viz. lateral, vertical and uplift loading [3][4], [8][9][10][11][12][13][14][15][16][17][18][19][20][21], [23][24][25][26][27], [29], [34][35][36], [42]. Various authors have conducted studies on combined lateral-uplift loading, lateral-vertical loading [18,41].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Vertical and Batter Piles under Lateral Loading Conditions: A Review

Premjani

Yadu

Bajaj

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Laterally loaded piles are generally used where high lateral load acts on the structures. Vertical piles along with batter piles are used in structures such as chimneys, towers, dock and harbor structures, and high-rise buildings. Various techniques have been used in literature to solve the laterally loaded pile problems. Among them p-y method is preferred over all other methods. Various researchers have provided analytical solutions for vertical and batter pile problems and are discussed in this paper. Experimental investigations were also carried out by various researchers on vertical and batter piles, indicating that the negative batter piles offer large resistance to lateral loads when compared with the vertical piles. The deflection values obtained from the analytical solutions were also compared with the model tests and were found to be in a good agreement. Numerical modeling conducted by various researchers on vertical and batter pile foundation by various researchers is also discussed in this paper.

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“…Batter piles are known for resisting high lateral loads but in current study the focus is on finding the uplift load capacity of the vertical as well as the batter pile having different angles. Various researchers ( [1], [3], [10][11][12][13][14][15][16][17][18][19][20], [22], [26], [28]) have already performed study on vertical and batter piles under lateral loads, but only a few have conducted study on uplift capacity of the vertical and batter piles [4], [9], [21], [27]. In the current study experiments were conducted on small scale model piles and it also includes the change of the slenderness ratios and variation of batter angles.…”

Section: Introductionmentioning

confidence: 99%

Study on Vertical Piles Batter Piles and Pile Groups Under Uplift Load Conditions in Non-Cohesive Sub-soil

Yadu

Bajaj

Premjani

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Model study was carried out in the laboratory to know the effect of uplift loads on vertical piles, batter piles and pile groups. Mild steel piles having 22 mm outer diameter and 1 mm thickness were considered for the study. Different slenderness ratios of 18, 28, and 38 and various angles such as 0°, 15°, 25°, 35°, and 45° were considered for the study. Sand was poured at a fixed relative density in the mild steel tank. The experimental study shows that the pile and pile group attain a maximum value of uplift load capacity when the batter angle reaches to 35°. Further, increase in batter angle causes a reduction in the uplift capacity of the pile. It is also noticed from the experiment that the uplift capacity increases with the slenderness ratio of the pile but its variation is not linear. Pile group of four piles with two vertical piles having L/D ratio 38 and two batter piles of L/D ratio 28 offers same resistance as of the same pile group with all the piles having L/D ratio 38. Numerical modeling was performed using Plaxis-3D to analyse the behavior of vertical piles, batter piles and pile groups under uplift loads. A good correlation between Plaxis-3D results and experimental results was observed.

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Behavior of vertical and batter piles under lateral, uplift and combined loads in non-cohesive soil

Cited by 14 publications

References 37 publications

Effect of Inclination Angle on the Response of Double-row Retaining Piles: Experimental and Numerical Investigation

Effect of Inclination Angle on the Response of Double-row Retaining Piles: Experimental and Numerical Investigation

A Comparative Study of Vertical and Batter Piles under Lateral Loading Conditions: A Review

Study on Vertical Piles Batter Piles and Pile Groups Under Uplift Load Conditions in Non-Cohesive Sub-soil

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