Estimation of the Settlement of Improved Ground With a Combined Technology of Shallow Stabilization and Floating -Type Cement Treated Columns

Comparative Analysis of Load Responses and Deformation for Crust Composite Foundation and Pile-supported Embankment

“…For instance, Jelisic and Leppänen (2003) proposed that the organic soft soil be treated by stabilization combined with the lime piles, but there is no theoretical methods to design. In addition, Ishikura et al (2016Ishikura et al ( , 2007 reported a new method for predicting the total settlement for the stabilization combined with the floating-type deep mixing soil stabilization method, based on the several loading model tests and field measurements, however, the method was not suitable to calculate the stabilization combined with rigid piles. To the best of our knowledge, the load responses and interaction effects were seldom explicitly considered or systematically investigated in the stabilization combined with rigid piles.…”

Two‐Dimensional Parametric Study of an Embankment on Clay Improved by an Artificial Crust Composite Foundation

“…For example, Jelisic and Leppänen [24] proposed the organic soft soil treated by stabilization combined with lime piles; another important constraint on all the work discussed in this area is that no theoretical method exists. e primary method that has been used in the literature [25,26] is a new method to predict the total settlement for a method combining stabilization and a floating-type deep cement mixing of the soil stabilization method based on several loading model tests. As far as we know, there is no definite research on the behavior study of an artificial crust combined with rigid piles.…”

Nonlinear Stress Analysis of Flexible Pile Composite Foundation by Energy Method

“…Song et al [9] held the idea that the stress ratio was proportional to the 1/2 of pile-soil modulus ratio, and the comprehensive empirical parameter α is introduced to reflect the nature of soil and load, and then the formula for calculating the stress ratio of mixing pile was proposed. Ishikura et al [10,11] by using the average skin friction deduced the average stress distribution ratio after consolidation.…”

“…In 2011, Yu et al [16] improved on the assumption of the linear distribution of the side friction of a pile along the depth, using the nonlinear distribution of skin friction of the pile along the depth. e paper [5][6][7][8][9][10][11][12][13][14][15][16] performed a study of the pile and soil, assuming them to be an elastic material, which was different from the nonlinearity of materials in practice. erefore, Qin et al [17] adopted the load-settlement hyperbolic model to analyse the pile-soil stress ratio.…”

“…Zhao et al [23], Yang et al [24], and Zhao et al [25] performed a comprehensive analysis of the effect of a reinforced cushion on the pile-soil stress ratio and derived the calculation of the pile-soil stress ratio and settlement of the pile-net composite foundation. Currently, the main problem in the study of pile-soil stress calculations is that the pile or soil is assumed to be an elastomer [5][6][7][8][9][10][11][12][13][14][15][16], which is obviously not realistic. In this paper, it is assumed that the soil satisfies the modified Cam-clay model, the constitutive behaviour of the cement-soil pile is introduced to describe the nonlinearity of the pile, and an equation is established to perform the calculation of pile-soil stress based on the fact that skin friction of the pile shaft and the relative displacement conforms with elastic-plastic relations.…”