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Volume 29 Issue 5
Oct.  2016
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Journal of Southwest Jiaotong University  > 2016  >  29(5): 987-994.
WANG Qing, KONG Yuanyuan, ZHANG Xudong, RUAN Yunkai, CHEN Ye. Mechanical Effect of Pre-consolidation Pressure of Structural Behavior Soil[J]. Journal of Southwest Jiaotong University, 2016, 29(5): 987-994. doi: 10.3969/j.issn.0258-2724.2016.05.023
Citation: WANG Qing, KONG Yuanyuan, ZHANG Xudong, RUAN Yunkai, CHEN Ye. Mechanical Effect of Pre-consolidation Pressure of Structural Behavior Soil[J]. Journal of Southwest Jiaotong University, 2016, 29(5): 987-994. doi: 10.3969/j.issn.0258-2724.2016.05.023
shu

Mechanical Effect of Pre-consolidation Pressure of Structural Behavior Soil

doi: 10.3969/j.issn.0258-2724.2016.05.023
  • Received Date: 20 Jun 2016
  • Publish Date: 25 Oct 2016
    Abstract
  • Special soil such as loess, saline soil, red soil, Xiashu loess, soft soil, or solidified dredger fill, has high pre-consolidation pressure (Pc) and high over-consolidation ratio (OCR), and with the increase of soil depth, the Pc value decreases obviously. To investigate these uncommon facts, soil structure force, structural strength and other issues in structural soils were analyzed. From experimental data, the factors affecting pre-consolidation pressure (Pc) were discussed, including the soil cementation type, soil genesis characteristics, original rock structure and environment. Soil structural strength was determined according to the compression curves of undisturbed and remolded soil, and the formation mechanism of structure force was explored. The results show that those factors affect the soil structure strength, which changes pre-consolidation pressure. It is found that the pre-consolidation pressure includes two parts, the traditional pre-consolidation pressure and soil structural strength; the structure force is the solidified bond strength between particles. Finally, the definitions of structural strength and structural soil were presented.

     

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