Analysis of Safety and Stability of Cofferdam and Research on Its Reinforcement Plan
刘亚辉 1李瑞2
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作者信息
1. 广州港工程管理有限公司 广东 广州 510700
2. 华设设计集团股份有限公司 江苏 南京 210014
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摘要
基于广州港南沙港区某码头工程的围堰深层水平位移监测实例,对软基围堰的改进加固处理措施进行深入研究.采用Plaxis2D有限元软件,计算围堰在疏浚吹填及地基处理过程中的安全稳定性系数并进行判定,验证反压坡道加固方案确实能够有效提高围堰的安全稳定性;通过调整加固方案中反坡护道的高宽值,计算围堰安全稳定性系数,得出一个兼顾经济性和稳定性的加固方案,建议反压坡道的高度和宽度均采用5 m.
Abstract
Based on the monitoring example of deep horizontal displacement of cofferdam of a wharf project in Nansha Port of Guangzhou Port,this article conducts in-depth research on the improvement and reinforcement measures for soft foundation cofferdams.Using Plaxis2D finite element software to calculate the safety and stability factors of the cofferdam during dredging,hydraulic filling,and foundation treatment processes for judgment,Verify that the reinforcement scheme of reverse pressure ramp can effectively improve the safety and stability of the coffer-dam;Calculate the safety and stability coefficient of the cofferdam by adjusting the height and width values of the anti slope guardrail in the reinforcement plan,a reinforcement plan that balances economy and stability is obtained.It is recommended to use a height and width of 5m for the counter pressure ramp.
关键词
深层水平位移/Plaxis2D软件/吹填堆载/加固方案
Key words
Deep horizontal displacement/Plaxis2D soft/Safety and stability/Reinforcement plan
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