The Stress Variation and Mechanism of Bearing Capacity Increment in Reinforced Foundation

Abstract:

For study the influence caused by geobelt and the mechanism of the strength increment in the reinforced foundation, the author analyzed stress state in each zone with reinforced and unreinforced, combined with the Mohr-Coulomb yield criterion, found the stress variation relationship between and in both foundations, which are found by the stress analysis method and geometry analysis method under the extreme state condition. The extreme normal stress incremental of vertical direction was solved in reinforced foundation. The essence of strength increment in reinforced foundation is revealed. The reliability of theoretical analysis was proved by numerical simulation. The conclusions show that increases in the active extreme equilibrium zone I and the passive extreme equilibrium zone Ⅲ, increases upper geobelt and decreases under geobelt in the transition zone ; the normal stress of each zone have changed correspondingly, the incremental variation of in I zone and the in Ⅲ zone has pseudo-cohesion.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 3769-3774
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.3769
• Online since: July 2011
• Authors: Peng Ying Yi
• Keywords: Destroy Criteria, Geometry Analysis Method, Numerical Simulation, Pseudo-Cohesion, Reinforced Foundation, Stress State, Theoretical Analysis Method

References

[1] Xianzhi Huang, Xiaohong Bai: Chinese Rock and Soil Mechanics, Vol. 9(2005), pp.1464-1468, in Chinese.

[2] Jian Zhou, Xiangli Kong, Xiaocun Wang: Chinese Journal of Geotechnical Engineering, Vol. 9(2008), pp.1265-1269, in Chinese.

[3] Wei Wang, Jian Wang, Jianhao Xue: Chinese Rock and Soil Mechanics, Vol. 12(2005), pp.1885-1891, in Chinese.

[4] Qiang Luo, Junyan Liu, Liang Zhang: Chinese Journal of Geotechnical Engineering Jan, Vol. 6(2003), pp.710-714, in Chinese.

[5] Bo Liang, Youhai Yang: Chinese Journal of Geotechnical Engineering, Vol. 1(2008), pp.123-127, in Chinese.

[6] Liang Zhang, Qiang Luo, Hu Chen et al.: Chinese Rock and Soil Mechanics, Vol. 9(2010), p.2772–2779, in Chinese.

[7] Xiequn Wang: Wuhan: Wuhan university of technology, Oct. 2003, in Chinese.

[8] Xian-zhi Huang, Xiaohong Bai: Chinese Journal of Geotechnical Engineering, Vol. 7(2005), pp.804-807, in Chinese.

[9] Wei Zhang: Taiyuan: Taiyuan university of technology, May 2003, in Chinese.

[10] Yaozhong Shi, Jiang-bo Liu, Yu Yang: Chinese Journal of Highway and Transportation Research and Development, Vol. 3(2008), pp.49-54, in Chinese.

[11] Guang-xin Li: Advanced soil mechanics (Tsinghua university press, Beijing 2005), in Chinese.

[12] Ying-ren Zhang, Liang Kong: Geotechnical plastic mechanics(China architecture &building press, Beijing 2010), in Chinese.

[13] Shao-fei Zhao, Mao-tian Luan, Qing-lai Fan et al.: Chinese Rock and Soil Mechanics, Vol. 11(2006), p.1909–1921, in Chinese.