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<p>An increasing number of extra-long and large-scale civil engineering projects are adjacent to, crossing, or traversing active faults due to urbanization, making the study of the interaction between faults and shallow foundations essential. In this study, 14 different combinations of foundation positions and loads were tested under reverse faulting to observe the failure patterns of the overlying soil and movements of the foundation. In addition to the three classic types of fault rupture summarized by Ahmed and Bransby (J Geotech Geoenviron Eng 135:914–924,&#xa0;<CitationRef CitationID="CR2">2009</CitationRef>) in centrifuge tests, two novel patterns of transitional fault ruptures were identified, making the transition of the fault rupture from the hanging wall to the footwall more gradual. The characteristics of vertical displacement of the surface and movement of the foundation under these five different rupture patterns are summarized, enabling an inference of unobservable fault rupture propagation beneath the surface on the basis of these visible features above the surface. Principal stress axis rotation angles and the soil compaction coefficient were applied to quantitatively explain the combined effects of the foundation position and load on the formation of different types of rupture patterns.</p>

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Experimental study on the interaction mechanisms of shallow foundations-soil under reverse fault

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Li Guan,
  • Chengbao Hu,
  • Daosheng Ling,
  • Gehan Chen

摘要

An increasing number of extra-long and large-scale civil engineering projects are adjacent to, crossing, or traversing active faults due to urbanization, making the study of the interaction between faults and shallow foundations essential. In this study, 14 different combinations of foundation positions and loads were tested under reverse faulting to observe the failure patterns of the overlying soil and movements of the foundation. In addition to the three classic types of fault rupture summarized by Ahmed and Bransby (J Geotech Geoenviron Eng 135:914–924, 2009) in centrifuge tests, two novel patterns of transitional fault ruptures were identified, making the transition of the fault rupture from the hanging wall to the footwall more gradual. The characteristics of vertical displacement of the surface and movement of the foundation under these five different rupture patterns are summarized, enabling an inference of unobservable fault rupture propagation beneath the surface on the basis of these visible features above the surface. Principal stress axis rotation angles and the soil compaction coefficient were applied to quantitatively explain the combined effects of the foundation position and load on the formation of different types of rupture patterns.