深水顺水沉放条件下护底软体排结构设计方法

Design methods for soft mattress in deep water and immersion along flow conditions

顺水流沉排方式能有效减少水流对软体护底排的冲刷破坏,但由于在深水条件下顺水流沉排时受力情况复杂,施工过程中难以保证软体排结构的安全。对深水顺水沉放条件下软体排受力进行理论分析,并对理论计算结果进行现场试验验证。在受力分析的基础上提出了适合在深水顺水流沉放条件下软体护底排的结构设计方法,并在长江中下游航道整治工程中得到了较好的应用。

The flow erosion intensity on soft mattress can be reduced effectively in the way of immersion along the flows. However, as the force condition is complex during the sinking process of soft mattress, it is difficult to ensure the structural safety. The force on the soft mattress in deep water and immersion along the flow conditions is analyzed. Field tests are carried out to validate the theoretical analysis results. Based on the force analysis, a new design method for soft mattress in deep water and immersion along the flow conditions is proposed. The structure has been well used in the middle and lower waterway regulation project of Yangtze River.