软弱基础水中双排钢板桩围堰变形分析

作为临时围护结构,水中钢板桩围堰的稳定性对工程施工安全的重要性不言而喻. 对围堰进行变形监测研究,掌握变形状况,控制施工风险,不仅能够防范施工期间事故的发生,还能节约工程成本. 通过分析某湖中大型通道项目施工中临时双排钢板桩围堰变形监测数据,研究围堰变形量和抽水过程中水位差的联系,经过拟合分析得出结论,可为类似水上工程设计和施工提供参考.

Deformation Analysis of Dual Steel Sheet Pile Cofferdam with Weak Foundation in Water

As temporary building envelope ,the stability of steel sheet pile cofferdam in water is of self-evident im-portance to construction safety .Researching the deformation monitoring of the cofferdam ,grasping deformation conditions and controlling construction risk can prevent accidents during construction ,and have great meaning to saving the project cost at the same time .The paper analyzed and discussed the deformation monitoring data of the temporary double steel sheet pile cofferdam in a lake tunnel construction project ,focusing on the relationship between deformation of cofferdam and the water head in the pumping period .By best polynomial approximation ,the result provides experience for similar projects.