Study on Bearing Mechanism of Long-Short-Pile Composite Foundation under Rigid Foundation

Abstract:

Long-short composite pile is a widely used ground improvement technique. This study presents the results of finite difference analyzes using FLAC3D software to investigate the load-bearing and bearing mechanism of long-short pile composite foundation under rigid foundation. The pile-soil load-sharing ratio and stress ratio, axial force distribution in the piles, and pile side friction resistance distribution characteristics are also studied. The results showed that due to negative skin friction of pile in composite foundation soil functions are fully utilized. On the other hand, the load distribution between piles and subsoil is significantly affected by the cushion.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 570-573
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.570
• Online since: September 2014
• Authors: Shuang Bin Qian*, Li Hua Zhang
• Keywords: Composite Foundations, Long-Short-Pile, Pile-Soil Share Ratio, Rigid Foundation

References

[1] Yuejun Chi, Erxiang Song and Wen-xin Gao: China university of mining & technology Vol. 31(2002), p.237 (In chinese).

[2] Chi Yuejun, Song Er-xiang, Huai Jin and Wen-xin Gao: Rock and Soil Mechanics Vol. 24(2003), p.339 (In chinese).

[3] Haitao Wen, Yanlin Zhao, Lei Wang and Baochen Liu: Guilin University of Technology Vol. 30(2010), p.240 (In chinese).

[4] Yang Jun-long, Ding Lu, Lei Jian-gong: Building science research of Sichuan Vol. 28(2002), pp.38-40(In chinese).

[5] Yang Jun-long, Gong Xiaonan, Sun Bang-chen: Journal of building structures Vol. 32(2002),P. 8-10 (In Chinese).

[6] JunJie Zheng, Sari W. Abusharar and XianZhi Wang: Computers and Geotechnics Vol. 35(2008), pp.637-643.