The Discussion about Improving the Bearing Capacity of Single Pile for Bored Pile in Sandy and Silt Layer

Abstract:

The bored pile which have the unique advantage in having no noise, no shake, no upheaval, no sides way in the process of construction has became into one of the most widely used pile foundations in high heavy construction in Inner Mongolia region. Through an engineering project of bored piles in Inner Mongolia region, this article takes an analysis for bearing behavior of the bored piles in sandy and silt layer in this region. It also discusses the influence construction technology on pile-end ultimate resistance and the reasonable range of reduction factor of the ultimate resistance. When the soil layers structure is similar, it could improve bearing capacity of single pile for bored pile by utilizing the supporting layer and substratums optional regrouping. Utilize traditional single pile bearing capacity theory formula calculating and the static load test results it takes an analysis, finding out the approach of improving the bearing capacity of single pile for bored pile in sandy and silt layer. So we could find the optimization design for pile foundation bearing capacity of bored pile and thus promote the improvement in bored piles theory research and engineering application level in Inner Mongolia region and provide theory and engineering design experience.

• Periodical: Applied Mechanics and Materials (Volumes 351-352)
• Pages: 1469-1473
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.351-352.1469
• Online since: August 2013
• Authors: Yu Qin Feng, Ying Hao Wang
• Keywords: Bearing Capacity, Bored Pile, Construction Technology, Pile End Resistance, Reduction Factor

References

[1] Technical Code for Building Pile Foundations, (JGJ94-2008), (in Chinese).

[2] Technical Code for Testing of Building Foundation Piles, (JGJ106-2003), (in Chinese).

[3] Meng Lv, etc: Exploration of approach of improving the bearing capacity of single pile for bored pile in silt and silty layer. (Symposium Proceedings of the Eighth National foundation treatment. 2004): pp.330-333, (in Chinese).

[4] Jinrong Huang: Enhanced and weakened effect of skin friction of cast-in situ piles. (Chinese Journal of geotechnical engineering. 2009), 31(5): pp.658-662, (in Chinese).