Offshore platform pile foundation construction method: Fid-Bau Portal

Offshore platform pile foundation construction method

HE JUNBIAO

The invention discloses an offshore platform pile foundation construction method. The offshore platform pile foundation construction method comprises the following steps that S1, a bearing platform steel truss is manufactured, and the bearing platform steel truss is provided with a plurality of pile holes distributed in rows and columns; S2, the length of a pile foundation is determined according to the drilling positions and the water depth of an offshore construction site; S3, the bearing platform steel truss is pulled to the offshore construction site, the pile holes correspond to the drilling positions one to one, the pile foundation is hoisted and inserted into the pile holes to be placed into the drilled holes, and a vibration hammer is adopted for piling to the preset depth; and S4, the bearing platform steel truss and the pile foundation are fixed and reach the designed height, and a panel is welded to the upper portion of the bearing platform steel truss to form an offshore platform. The offshore platform pile foundation construction method is simple in structure, high in construction adaptability and suitable for offshore drilling, engineering investigation and other engineering work, and transverse and longitudinal expansion can be conducted according to engineering needs so as to widen the application range of the offshore platform pile foundation construction method.

本发明公开了一种海上平台桩基施工方法，包括以下步骤：S1、制作承台钢桁架，所述承台钢桁架具有多个行和列形式分布的桩孔；S2、根据海上施工现场的钻孔位置与水深，确定桩基长度；S3、将承台钢桁架牵引至海上施工现场，并使桩孔与钻孔位置一一对应，将桩基起吊并插入桩孔下放至钻孔，采用振动锤打桩至预定深度；S4、将承台钢桁架与桩基固定并达到设计高度，在承台钢桁架上方焊接面板形成海上平台。本发明结构简单、施工适应性强，适合海上钻探钻井、工程勘察等工程作业，可以根据工程需要进行横向纵向扩展以增加其应用范围。

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