Abstract
Cyclic loading-induced consolidation behavior of soft soil is of great interest for the analysis of offshore and onshore structures. In this study, an analytical solution for one-dimensional (1D) nonlinear consolidation of saturated double-layered soil under various types of cyclic loadings such as trapezoidal cyclic loading, rectangular cyclic loading, and triangular cyclic loading was derived. The proposed solution was subsequently degenerated into solutions for special cases and compared to the existing solutions. The degenerate solutions show good agreement with the existing results, which proves that the proposed solutions are more general ones for 1D nonlinear consolidation of saturated soils under time-dependent loading. Finally, a comprehensive parametric study was conducted to investigate the influences of different layer parameters, drainage conditions, and loading parameters on nonlinear consolidation of saturated double-layered soil under cyclic loadings.
Highlights
Soft soil beneath most of the marine structures is saturated and can be subjected to various types of cyclic loads. e sources of cyclic load include traffic loads on roads, highways, railways, and airports; silos or tanks filling and discharging; wave and wind actions for offshore structures; and so on
It can be found that the degenerate solutions from this paper show good agreement with the existing results, which proves that the proposed solutions are more general ones for 1D nonlinear consolidation of saturated soils under time-dependent loading
Analytical solutions have been presented for 1D nonlinear consolidation of saturated double-layered soil subjected to cyclic loadings such as trapezoidal cyclic loading, rectangular cyclic loading, and triangular cyclic loading
Summary
Soft soil beneath most of the marine structures is saturated and can be subjected to various types of cyclic loads. e sources of cyclic load include traffic loads on roads, highways, railways, and airports; silos or tanks filling and discharging; wave and wind actions for offshore structures; and so on. E sources of cyclic load include traffic loads on roads, highways, railways, and airports; silos or tanks filling and discharging; wave and wind actions for offshore structures; and so on For those structures built on soft soil, predicting the cyclic loading-induced consolidation deformation is a very important design issue. Many scholars have presented different solutions for a consolidation of saturated soil under various cyclic loadings such as rectangular cyclic loading [1], haversine cyclic loading [2,3,4], and the other types of cyclic loadings [5, 6]. Analytical solutions are derived for 1D nonlinear consolidation of saturated double-layered soil under different cyclic loadings such as trapezoidal cyclic loading, rectangular cyclic loading, and triangular cyclic loading. A comprehensive parametric study is conducted to investigate the influences of different layer parameters, drainage conditions, and loading parameters on nonlinear consolidation behavior of saturated double-layered soil under cyclic loadings
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