Anti-scouring device of offshore steel pipe pile foundation and installation method: Fid-Bau Portal

Anti-scouring device of offshore steel pipe pile foundation and installation method

ZHANG JIE / LIN LIN

The invention relates to the technical field of ocean engineering, in particular to an anti-scour device for an offshore steel pipe pile foundation, which comprises a cover plate which is gradually raised from the periphery to the middle, a through hole for a steel pipe pile to penetrate through is formed in the middle of the cover plate, a hanging component for hooking is arranged at the position of the through hole of the cover plate, and the hanging component is positioned on the raised surface of the cover plate. And the periphery of the cover plate is annularly provided with a blocking wall on the side of the concave surface. When the device is used, the hooking component needs to be installed at the bottom of a steel pipe pile firstly, then the device is arranged on the steel pipe pile in a penetrating mode through the through hole and hooked on the hooking component through the hanging component, one-way axial limiting of the device is achieved, and therefore the device can be installed together during pile sinking, and the construction workload of the device is greatly reduced; meanwhile, after the bottom of the steel pipe pile penetrates into the seabed sediment surface, the cover plate of the device can cover the seabed sediment surface, so that sediment around the steel pipe pile is effectively protected, and the anti-scouring effect is good.

本发明涉及海洋工程技术领域，尤其涉及一种海上钢管桩基础的防冲刷装置，包括从外周向中间逐渐隆起的罩板，罩板的中部开设有供钢管桩穿过的通孔，罩板在通孔位置处设有用于钩挂的悬挂构件，悬挂构件位于罩板的隆起面上，罩板的外周于凹陷面侧环设有封堵墙。在使用时，需先在钢管桩的底部安装钩挂构件，再将该装置通过通孔穿设在钢管桩上，并借由悬挂构件钩挂在钩挂构件上，实现装置的单向轴向限位，从而实现在沉桩时即可将该装置一同安装完成，使得该装置的施工作业量大大减小；同时，在钢管桩的底部贯入海底泥沙面后，该装置的罩板能够罩设在海底泥沙面上，从而对钢管桩周围的泥沙提供有效的保护，防冲刷效果较好。

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