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Shakedown analysis provides the loading variation limit of a structure, under which the plastic deformation occurred in first loading cycles will cease to further develop and the structure will respond purely elastically to the remaining load cycles. This paper investigated the arching in highway piled embankments under moving shakedown limit loads, which was calculated by the shakedown solutions. The shakedown solutions for materials obeying Mohr–Coulomb criterion was firstly presented based on Melan's shakedown theorem, which utilised elastic stress fields obtained from the full three-dimensional (3D) finite element (FE) method. Finally, the shakedown limit load for pure rolling condition (i.e. only normal load) was applied onto the surface of pavement as a moving vehicle load. The FE results under moving shakedown limit loads captured similar trend with those under the static loads in terms of settlement and vertical stress, but gave the normalised settlement and vertical stress 33 and 24% larger. The soil arching remained existed in the highway piled embankments under moving shakedown limit loads, but was reduced. The inclusion of moving shakedown limit loads increased the vertical stress of the embankment and thus resulted in a reduction of the maximum value of lateral earth pressure coefficient by approximately 38%. [ABSTRACT FROM AUTHOR]

Prediction of uplift pile response is an interesting area of research in the field of geotechnical engineering. In the present approach, a hyperbolic model is adopted to simulate the relationship between pile displacement and unit skin friction developed at the pile–soil interface. Based on the hyperbolic model, a simple analytical approach is proposed to analyse the nonlinear response of a single pile subjected to tension load. Furthermore, comparisons of the results derived from the present method, other analytical methods and well-documented field experimental pile loading cases are made to demonstrate the effectiveness and accuracy of the proposed analytical methods. The proposed simple analytical approach is economical and efficient, and suitable for the analysis of a tension pile embedded into layered soils using a hyperbolic model. [ABSTRACT FROM AUTHOR]