Study on Stability against Sliding of Seawall Subject to Ice Load and Freezing and Thawing Cycles

Abstract:

The seawall shallow foundation is silty soil in northern coastal area. So the seawall is subject to ice load and freezing and thawing cycles as the temperature variation. It is unfavourable for the stability against sliding of seawall. The experiment of silt soil sample under freezing and thawing cycles has been done to analyze the law of mechanical properties. On this basis the numerical model of seawall with stability against sliding has been established. The calculation results show that the soil strength index decreased under ice load and freezing and thawing cycles. The stability against sliding of seawall would be reduced. Under ice load and freezing and thawing cycles the Mises yield stress reduced, horizontal and vertical displacement would be greater slightly. The stress of the plastic zone would be evenly distributed. The Plastic penetration area does not appear.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 580-584
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.580
• Online since: September 2014
• Authors: Yu Ting Zhang*, Xiao Li Qiao
• Keywords: Numerical Simulation, Seawall, Silty Soil, Stability against Sliding

References

[1] Wu Qingbai, Liu Yongzhi, Zhong Jiaming, et al. A Review of Re-cent Soil Engineering in Permafrost Regions Along Qinghai-Tibet Highway. Permafrost and Periglacial Processes . (2002).

DOI: 10.1002/ppp.420

[2] Feng Wenjie, Ma Wei, Li Dongqing, Zhang Luxin.  Application investigation of awning to roadway engineering on the Qinghai-Tibet Plateau[J]. Cold Regions Science and Technology . 2006 (1).

DOI: 10.1016/j.coldregions.2006.01.004

[3] SHI YH, HE P, BIAN XL. Dynamic Response of High-Temperature Frozen Soil Subgrade under Train Dynamic Loading. 4th International Symposium on Environment Vibrations-Prediction, Monitoring, Mitigation and Evaluation . (2009).

[4] Yong R N, Boonsinsuk P, Yin C W P. Alternation of soil behavior after cyclic freezing and thawing. Proceedings of 4th International Symposium on Ground Freezing . (1985).

[5] Wen Zhi, Sheng Yu, Ma Wei, Qi Jilin, Jichun Wu.  Analysis on effect of permafrost protection by two-phase closed thermosyphon and insulation jointly in permafrost regions[J]. Cold Regions Science and Technology . 2005 (3).

DOI: 10.1016/j.coldregions.2005.04.001

[6] Shaoling Wang, Fujun Niu, Lin Zhao, Shuxun Li.  The thermal stability of roadbed in permafrost regions along Qinghai–Tibet Highway[J]. Cold Regions Science and Technology. 2003 (1).

DOI: 10.1016/s0165-232x(03)00011-9