A Simplified Nonlinear Method for a Laterally Loaded Pile in Sloping Ground

Abstract

A simplified nonlinear method was proposed to evaluate lateral behavior of a pile located in or nearby a slope, based on the traditional p-y method. is method was validated with field test results of a steel pipe pile in clay and model tests of piles in sand slopes. e comparison indicated that the calculated horizontal displacement and bending moment of piles agree well with experimental results. en, parametric studies were performed, and it shows that horizontal displacement, rotation, bending moment, and shear force increase along with increasing slope angles; the depth of maximum moment locates at about 1.6 D below ground surface for horizontal ground, while this value turns to be about 3.6 D and 5.6 D for sloping ground of 30°and 60°, respectively. e study clearly shows that slope angle has a significant effect on the deflection and lateral capacity of piles.

A Simplified Calculation Method for the Near‐Slope Laterally Loaded Pile Based on a Passive Wedge Model

“…After obtaining the modified p-y curve of pile near a slope along the depth, horizontal displacement, bending moment and rotation angle along the pile can be calculated by the finite difference method using MATLAB code. Details flow chart can be found in Jiang et al [7] and Yin et al [8].…”

“…It should be noted that previous studies have not considered the influence of slope height h on the bearing capacity of piles [16,19,20,30]. When the slope height h is smaller than the maximum depth of the failure wedge development, it is clear that h will affect the ultimate resistance F su3 , as shown in equation (8). Let h be equal to 0 or let θ be equal to 0, and F su2 or F su3 will degenerate into F u for the case of pile in the ground, indicating that the theoretical derivation process of this paper is reasonable.…”

“…F su1 , F su2 , and F su3 in equations (6)- (8) are obtained based on the force equilibrium of the wedge at failure. e calculation of F su1 is similar to equation 5for the laterally loaded pile in ground face.…”

“…Recently, more and more laterally loaded piles are constructed near a natural or constructed slope, such as bridge abutments adjacent to approach embankments [1], built piles for slope stabilization [2,3], and existing piles adjacent to excavation [4,5]. In these cases, in light of the weaken lateral soil resistance near the slope, the lateral loading capacity of piles decreases obviously compared with that constructed in horizontal ground [6][7][8]. erefore, it is critical to consider the influence of slope for estimating the safety of piles constructed near the slope accurately.…”

An Experimental Study of Horizontal Bearing Capacity of Vertical Steel Floral Tube Micropiles with Double Grouting

“…Moreover, the lateral bearing capacity of a topconnected micropile system was studied by Kim et al [15]. Yin et al [16] proposed a new nonlinear method to evaluate lateral behaviour of a pile located in or nearby a slope, and the study clearly showed that the slope angle has a significant effect on the deflection and lateral capacity of piles. Kahribt and Abbas [17] found that, under combined vertical and cyclic lateral loads, the lateral displacement of piles decreased with an increase in the vertical load, whereas it causes large vertical displacements at all slenderness ratios.…”