Study the Application of PHC Piles to Treat Collapsible Loess Soils

Abstract:

Some project in Henan Province of China mainly includes high-rise residential buildings, multi-storey commercial building and the garage, and the building fields are collapsible soils which belong to non-weight grade Ⅱ. 315 static pressure PHC piles were constructed in square shape, 7 holes were drilled at the places near or close to the PHC pile, porosity ratio, weight and non-weight collapsibility coefficients were in-door tested, and corresponding calculation results reveal that: static pressure PHC piles can efficiently eliminate loess collapsibility of the fields, there are differences between the porosity ratios of experimental values and theoretical values, so the construction testing and acceptance should be based on the in-situ testing results, and these conclusions provide basis for the similar projects in future.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 1649-1652
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.1649
• Online since: January 2012
• Authors: Hong Xia Liu
• Keywords: Collapsible Loess Soils, PHC Pile, Reinforcement

References

[1] GB 50025-2004. The collapsible loess district building codes.

[2] Wang jun, Zhang Xuhong. Effect Analysis of Collapsibility Loess Foundation Treatment with Dynamic Compaction[J]. Electric Power Survey, 2004, (3): 18-21.

[3] LiDaZhong. The Calculation of Bearing Capacity of Collapsible Loess Treated by Dynamic Compaction[J]. Soie Engineering and Foundation, 2000, 14 (4) : 11-14.

[4] Luo Wei, Tian Min. Ram-compaction pile in loess foundation processing the application of shelter [J]. Exploration Engineering(Rock & Soil Drilling and Tunneling), 2006 (2):. 39-41

[5] Li ShinNing. Lime pile expansion method to reinforce collapsible loess theoretical and experimental study [D]. Master thesis, Lanzhou university of technology, 2005,.

[6] Miao Qiangqiang. Combining the treatment effect of the foundation of the research [D]. Master thesis, Lanzhou university of technology, 2007,. [1] GB 50025-2004.