A calculation model for large cylindrical structures is established based on quasi-static analysis on the ABAQUS platform. Through numerical simulation, the stability of large cylindrical structure with different reinforced foundations can be analyzed. The results manifest that the reinforcement effect of the cylindrical structure is not clear when the soil inside the cylinder is reinforced with different burial depths. However, the reinforcement effect of the cylindrical structure becomes obvious when the horizontal and buried depth directions of the soil outside the cylinder are reinforced simultaneously. The reinforcement effect of the large cylindrical structure is roughly the same as that of the soil outside the cylinder when both the inside and outside of the cylinder are reinforced simultaneously. Through comparative analysis, we draw some useful conclusions for practical engineering.

Fucai Pei and Ranran Hu. Stability Analysis of Cofferdam Structures on Different Reinforced Soft Foundations. International Journal of Engineering Technology and Construction (2023), Vol. 4, Issue 2: 38-44. https://doi.org/10.38007/IJETC.2023.040205.

[1] Wu Yongsheng, Tao Junjie, Lu Jianping. Research on the instability and failure mechanism of large cylindrical structures on soft foundations. Geotechnical Fundamentals. 2010,24(3:55-58.

[2] Wang Gang, Chen Yang, Zhang Jianmin. Finite element method for the analysis of overturning stability of large cylindrical structures. Geotechnical Mechanics, 2006,27(2):238-241.

[3] Muff J D, Halmiton J M.P-Ultimate for undrained analysis of laterally loaded piles. Journal of the Geotechnical Engineering Division, ASCE, 1993,119(1):91-107.

[4] Murff J D, Aubeny C P and Moon S K. Lateral undrained resistance of suction caisson anchors. International Journal of Offshore and Polar Engineering,2001,11(3):211-219.

[5] Jiang Minmin. Study on the interaction between a new type of breakwater structure and soft soil foundation under wave loads. Nanjing: Nanjing Institute of Water Resources, 2010:1-133.

[6] Xiao Zhong, Wang Yuanzhan, and Chun Ning. Stability analysis of large cylindrical structures reinforced on soft foundations under wave action. Geotechnical Mechanics, 2010,31(8): 2648-2654.

[7] Zhang Zhenyu, Yao Wenjuan. Research progress on large cylindrical thin shell structures. Journal of Shanghai University (Natural Science Edition), 2004,10(1): 82-91.

[8] Zhang Xingxing, Zhang Jianhong. Finite element simulation of overturning of large cylindrical structures . China Shipbuilding, 2008, 49 Supp. 2:375-379.

[9] Wang Yuanzhan, Hua Rena, Zhu Zhenyu. Stability calculation method for large cylindrical coastal structures under soft soil foundation conditions. Geotechnical Mechanics, 2005, 26(1): 41-45.

[10] Wu Mengxi. Bearing Mechanism and Stability Analysis of Deep Buried Large Cylindrical Structures in Soft Soil Foundations. Proceedings of the 9th Academic Conference on Soil Mechanics and Geotechnical Engineering. Beijing: Tsinghua University Press, 2003593-598.