Study on On-Site Test of Vertical Bearing Behavior of Rigid Pile Composite Foundation for High-Rise Buildings

Abstract:

To study the working behavior of a rigid pile composite foundation of high-rise buildings, an in-situ loading test and stress test on piles and soil were carried out. According to the test results, the stress distributions and variations, load transferring characteristics, and stress distributions of piles were analyzed. The results showed that the piles with the formation of non-soil compaction technology can consolidate soil among piles. When the load level was greater than 240 kPa, a better consolidation effect can be obtained. The development negative friction at the top of piles was relevant to the load level. The adjustment effect of cushion on the composite foundation was mainly embodied before the load level reached the characteristic bearing capacity of the composite foundation. Under vertical load, the stress distributions along the internal and external sides of pile shaft were different and the loading plate would bring influence to stress distributions of the pile shaft. The influence range was from the middle to the top of the pile. Based on the test results, it is recommended to reduce the evaluation standard of the bearing capacity determined in the pressing plate test. The results can provide a reference for similar engineering.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 3141-3146
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.3141
• Online since: May 2011
• Authors: Jing Hui Tao, Shu Ting Liang, Wei Ming Gong, Chun Liang Wu
• Keywords: Bearing Behavior, On-Site Test, Rigid Pile Composite Foundation, Stress Test

References

[1] M. Yan, D. Zhang: CFG Pile Composite Foundation Technique and Practice, 2nd ed. (WaterPower Press, Beijing 2005). (In Chinese)

[2] X. Gong: Composite Foundation Theory and Engineering Application, 2nd ed. (China Architecture and Build Press, Beijing 2007). (In Chinese)

[3] L. Li, P. Bao, and J. Zhao: Building Structure, vol.40 (2010), p.69. (In Chinese)

[4] Z. Guo, Z. Wang and Z. Yang: Rock and Soil Mechanics, vol.30 (2009), p.163. (in Chinese)

[5] R. Wang, X. Lei: Industrial Construction, vol. 34 (2004), p.49. (In Chinese)

[6] Ministry of Construction of the P.R. China: JGJ 106-2003. Technical code for testing of buiding foundation piles. (China Architecture and Build Press, Beijing 2003)

[7] China Academy or Building Research: JGJ 79-2002. Technical code for ground treatment of buildings. (China Architecture and Build Press, Beijing 2002)

[8] L. Zhou, H. Tong, M. Wang and D. Zhang: Chinese Journal Of Geotechnical Engineering , vol.27 (2005), p.841. (In Chinese)

[9] Committee of Pile Foundation Engineering Handbook: Pile Foundation Engineering Handbook. (China Architecture and Build Press, Beijing 1995). (In Chinese)