A Monitoring Test Study on Soft Clay Treatment by Preloading with Plastic Drainage Pipe

Abstract:

According to the monitoring results of soft clay treated by preloading with plastic drainage pipe, the consolidation settlement effect of soft clay with 50kPa preloading load, 21m plastic pipe, 1.2m and 1.5m distance was compared with that of 30kPa preloading load, 6m plastic pipe, 1.5m and 2.0m distance. The analysis showed that, the preloading method with deep plastic drainage pipe can accelerate the dissipation of excess pore water pressure in deep soft soil. The over-flow penetration may occur in the confined water. The elastic deformation appears and recoveries after unloading. This is not conducive to the consolidation of soft clay layer 4. The plastic drainage pipe whose depth and distance should be 18~20m and 1.5m respectively to the consolidation soft soil in Pudong.

• Periodical: Applied Mechanics and Materials (Volumes 90-93)
• Pages: 245-249
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.90-93.245
• Online since: September 2011
• Authors: Yong Mou Zhang, Jian Chang Zhao
• Keywords: Monitoring Test, Plastic Drainage Pipe, Preloading, Soft Clay Treatment

References

[1] Ch.H. Zhang and W.M Yuan et al.: Expressway Foundation Treatment (China Building Industry Press, Beijing 1998), in Chinese.

[2] Foundation Treatment Manual Editorial Board: Foundation Treatment Manual (China Building Industry Press, Beijing 2002), in Chinese.

[3] J.H. Qian and Z.Z Yin: Principle and Calculation of Geotechnique (Water Conservancy and Electric Power Press, Beijing 1996), in Chinese.

[4] Z.Y Lin: Geotechnical Control Manual (Liaoning Science and Technology Press, Shenyang 1993), in Chinese.