Consolidation of Vertical Drain Foundation in Consideration of Temperature Effect and Well Resistance Change

ZHANG Yu-guo; WANG Chuang; YANG Wen-bing; ZHAO Ya-min

doi:10.11988/ckyyb.20211378

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Journal of Changjiang River Scientific Research Institute ›› 2023, Vol. 40 ›› Issue (6) : 119-125. DOI: 10.11988/ckyyb.20211378

Rock-Soil Engineering

Consolidation of Vertical Drain Foundation in Consideration of Temperature Effect and Well Resistance Change

ZHANG Yu-guo, WANG Chuang, YANG Wen-bing, ZHAO Ya-min

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Abstract

A calculation model for the consolidation of vertical drain foundation that considers temperature effects and well resistance change is established in this study. The general solution of consolidation for vertical drain foundations in consideration of temperature effects and well resistance change is obtained through analytical methods. The correctness and rationality of this solution are verified by degradation studies and comparisons with existing solutions. An example is used to draw the consolidation curve of a vertical drain foundation considering temperature effects and well resistance change. The results show that both temperature effects and changes in well resistance have a significant influence on the consolidation of vertical drain foundations. The higher the temperature, the larger the consolidation rate, but the influence of temperature on consolidation gradually weakens. Well resistance has a more significant effect on consolidation rate than temperature does. When the drain spacing ratio and temperature remain unchanged, and the well resistance reaches a certain value, the consolidation rate tends to be zero, and the consolidation degree tends to be a certain value. With an increase in well resistance, the dissipation of excess pore pressure slows down significantly. The higher the temperature, the faster the excess pore pressure dissipates.

Key words

vertical drain foundation consolidation / excess pore pressure / temperature / well resistance / analytical solution

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ZHANG Yu-guo, WANG Chuang, YANG Wen-bing, ZHAO Ya-min. Consolidation of Vertical Drain Foundation in Consideration of Temperature Effect and Well Resistance Change[J]. Journal of Changjiang River Scientific Research Institute. 2023, 40(6): 119-125 https://doi.org/10.11988/ckyyb.20211378

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