双排钢板桩围堰设计参数的结构影响与优化研究

Structural influence and optimization on design parameters of double row steel sheet pile cofferdam

格型钢板桩是深水区水利工程建设中的新型围堰结构,具有十分广泛的应用空间。本文以某水电站二期工程为例,利用数值模拟的方法研究钢板桩的设计参数对其结构性能的影响。结果表明:原设计方案中的三层拉杆和16 m的桩间距为合理设计,拉杆间距设计偏保守,建议将拉杆间距设计为2.5 m。

Lattice steel sheet pile is a new type of cofferdam structure in water conservancy project construction in deep water area,which has a very wide application space.Taking the second stage project of a hydropower station as an example,the influence of design parameters of steel sheet pile on its structural performance is studied by using numerical simulation method.Based on the analysis of the calculation results,it is considered that the distance between the three-layer tie rod and the pile of 16m in the original design scheme is reasonable,and it is suggested to design the spacing of the tie rod as 2.5 m.