Stability analysis of Caisson Cofferdam Based on Strength Reduction Method

[摘要] The working mechanism of the caisson cofferdam depends on the self-weight of the structure and internal filling to ensure its skid resistance and overturn resistance stability. Using the strength reduction method, the safety factor of the caisson cofferdam can be obtained. The potential slide surface can be searched automatically without constraining the range of the arc center. According to the results, the slippage surface goes through the bottom of the caisson. Based on the judgement criterion of the strength reduction method, the final safety factor is about 1.65.

[发布机构] Tianjin Port Engineering Institute Ltd., CCCC, Tianjin, China^1;CCCC First Harbor Engineering Co. Ltd., Tianjin, China^2;Key Lab. of Geotechnical Engineering of Tianjin, Tianjin, China^3;Key Lab. of Geotechnical Engineering, Ministry of Communication, Tianjin, China^4

[效力级别] 经济学

[关键词] Judgement criterion;Resistance stability;Self-weight;Slide surface;Stability analysis;Strength reduction method;Working mechanisms