A Compression Curve Cluster Based Framework for Evaluating the Compression Behavior of Structured Soils

The dataset used in this study was compiled for fitting the compression curves of structured soils. It mainly consists of paired values of void ratio e and effective vertical stress, which together define the compression response under different loading levels. The data include both reference datasets digitized or collected from published studies on representative structured clays and simulated datasets generated to investigate the effects of model parameters, such as Rs, n, s, and the initial void ratio ei, on curve shape. The research hypothesis is that the compression behavior of structured soils follows a systematic nonlinear pattern and that this pattern can be described within a unified fitting framework. The data show clear trends of decreasing void ratio with increasing effective vertical stress, as well as distinct differences among soils and parameter settings, reflecting the influence of structure and destructuration on compression behavior. Therefore, the dataset serves as the empirical and numerical foundation for the fitted curves presented in this paper and provides sufficient information for interpretation, comparison, and reproduction of the analysis.