海上导管架沉桩施工送桩器能量消散分析

Energy Dissipation Analysis of Pile Extension in Piling of Offshore Wind Turbine Jacket Foundation

由于部分液压冲击锤不具备水下沉桩能力,海上风电先桩法导管架沉桩施工需要借助送桩器进行送桩。在工程桩桩顶插接送桩器,打桩锤通过锤击送桩器,将能量传递至工程桩,从而将桩打入。通过高应变动力检测手段检测锤击时送桩器及工程桩能量和应力,可以测算送桩器能量消散比例,为海上风电行业沉桩施工及打入性分析提供参考。

Because of some hydraulic impact hammers that do not have the ability to pile underwater,offshore wind power pre-piled jacket often cannot directly drive the pile with a pile hammer,and a pile extension must be used.The piling hammer transmits the energy to the pile by hammering the pile extension,thereby driving the pile to a predetermined depth.The energy dissipation ratio can be measured,by the high-strain dynamic testing during hammering the pile extension,this provideS a reference for the piling analysis in offshore wind power industry.