Offshore wind power PHC pipe pile construction method: Fid-Bau Portal

Offshore wind power PHC pipe pile construction method

WU QINGSONG

The invention provides an offshore wind power PHC pipe pile construction method, and relates to the technical field of PHC pipe piles, and the method comprises the following steps: transporting qualified prefabricated pipe piles from a prefabrication factory to a piling site through a material barge; a guide frame is installed at the position, close to the fly ball barge, of the piling site, so that a formal pile is guided to be in the correct position and linearity; at least two permanent datum points are arranged on a piling base, a GPS/RTK base station is established on land for correction, coordinates of pre-piling are transferred out from control points established by the GPS/RTK base station, and a guide pile support on a guide frame is adjusted according to the coordinates, so that a formal pile can be accurately driven into a designed coordinate position; the piling barge is dragged to piling anchoring by the tugboat, and a warning mark and a buoy are mounted in alignment with the pile position, so that the piling barge and the tugboat are prevented from accidentally colliding with the formal pile; the upper prefabricated pipe pile and the lower prefabricated pipe pile are welded; and the formal pile is hoisted to the guide frame and then fixed to the diesel hammer, and the diesel hammer is used for piling to the designed elevation.

本发明提供一种海上风电PHC管桩施工方法，涉及PHC管桩的技术领域，包括以下步骤：将验收合格的预制管桩从预制工厂经材料驳船运输至打桩现场；在打桩位点靠近飞锤驳船处安装导向架，以使引导正式桩在正确的位置和线性上；在打桩基地上设置至少两个永久性基准点，并在陆地上建立GPS/RTK基站进行校正，预打桩的坐标由GPS/RTK基站建立的控制点转出，根据坐标，对导向架上的导桩支架进行调整，从而使正式桩能够准确打入在其设计的坐标位置上；打桩驳船由拖船拖至打桩锚泊，并对准桩位安装警示标志和浮标，防止打桩驳船和拖船与正式桩发生意外碰撞；将上部预制管桩和下部预制管桩进行焊接；将正式桩上吊到导向架上，然后固定在柴油锤，由柴油锤进行打桩至设计标高。

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