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Offshore wind turbine multi-cylinder reinforced composite single-pile foundation and construction method
The invention relates to an offshore wind turbine multi-cylinder reinforced composite single-pile foundation and a construction method. The offshore wind turbine multi-cylinder reinforced composite single-pile foundation comprises a single pile, a friction disc and a plurality of suction cylinders. The construction method comprises the following steps of: 1) floating hauling: the friction disc bears the plurality of suction cylinders initially mounted on the friction disc and hauls the suction cylinders to approximate positions in a floating manner; (2) anchoring positioning and buoyancy releasing for sinking: a positioning anchor is arranged at the approximate anchoring position of a boat, a rope is wound and unwound, and a hauling boat drags the friction disc to perform fixed-position buoyancy releasing for sinking; 3) negative-pressure cylinder sinking: water in the suction cylinders is drawn, the suction cylinders are sunk under negative pressure to set positions and fixed; and 4)in-place positioning piling of a mounting platform: the single pile is sunk to a designed position by an offshore mounting platform, the single pile penetrates through the friction disc to enter muckysoil, and then the single pile is inserted into a lower bearing sandy soil layer to prop against a bed rock position; and after piling in place, the single pile and the friction disc are fixed. The foundation is more economical, better in bearing capacity and particularly suitable for geological conditions that an overlying layer is weak and bed rock is shallow.
本发明为一种海上风机多筒加固的复合式单桩基础及施工方法，包括单桩、摩擦盘、多个吸力筒，该施工方法包括以下过程：1)漂浮拖运：使摩擦盘承载初装在其上的多个吸力筒通过漂浮方式托运到大概位置；2)下锚定位和释放浮力下沉：采用小船锚定大概位置设置定位锚，收放绳索，托运船拖动摩擦盘定位释放浮力下沉；3)负压沉筒：抽取吸力筒内的水，实现负压下沉吸力筒至设置位置，并固定；4)安装平台就位定位打桩：由海上安装平台将单桩沉桩至设计位置，将单桩穿过摩擦盘进入淤泥质土，进而插入下部持力砂土层，顶在基岩位置；打桩到位后，将单桩和摩擦盘固定。该基础更加经济承载能力更好，尤其适用于针对上覆层薄弱且基岩较浅的地质条件。
Offshore wind turbine multi-cylinder reinforced composite single-pile foundation and construction method
The invention relates to an offshore wind turbine multi-cylinder reinforced composite single-pile foundation and a construction method. The offshore wind turbine multi-cylinder reinforced composite single-pile foundation comprises a single pile, a friction disc and a plurality of suction cylinders. The construction method comprises the following steps of: 1) floating hauling: the friction disc bears the plurality of suction cylinders initially mounted on the friction disc and hauls the suction cylinders to approximate positions in a floating manner; (2) anchoring positioning and buoyancy releasing for sinking: a positioning anchor is arranged at the approximate anchoring position of a boat, a rope is wound and unwound, and a hauling boat drags the friction disc to perform fixed-position buoyancy releasing for sinking; 3) negative-pressure cylinder sinking: water in the suction cylinders is drawn, the suction cylinders are sunk under negative pressure to set positions and fixed; and 4)in-place positioning piling of a mounting platform: the single pile is sunk to a designed position by an offshore mounting platform, the single pile penetrates through the friction disc to enter muckysoil, and then the single pile is inserted into a lower bearing sandy soil layer to prop against a bed rock position; and after piling in place, the single pile and the friction disc are fixed. The foundation is more economical, better in bearing capacity and particularly suitable for geological conditions that an overlying layer is weak and bed rock is shallow.
本发明为一种海上风机多筒加固的复合式单桩基础及施工方法，包括单桩、摩擦盘、多个吸力筒，该施工方法包括以下过程：1)漂浮拖运：使摩擦盘承载初装在其上的多个吸力筒通过漂浮方式托运到大概位置；2)下锚定位和释放浮力下沉：采用小船锚定大概位置设置定位锚，收放绳索，托运船拖动摩擦盘定位释放浮力下沉；3)负压沉筒：抽取吸力筒内的水，实现负压下沉吸力筒至设置位置，并固定；4)安装平台就位定位打桩：由海上安装平台将单桩沉桩至设计位置，将单桩穿过摩擦盘进入淤泥质土，进而插入下部持力砂土层，顶在基岩位置；打桩到位后，将单桩和摩擦盘固定。该基础更加经济承载能力更好，尤其适用于针对上覆层薄弱且基岩较浅的地质条件。
Offshore wind turbine multi-cylinder reinforced composite single-pile foundation and construction method
一种海上风机多筒加固的复合式单桩基础及施工方法
WANG XUEFEI (author) / LI JIALE (author) / LI DEMING (author)
2020-12-01
Patent
Electronic Resource
Chinese
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