水上大直径桩双主钩双吊梁翻桩立桩技术  

Double Main Hook Overturning and Piling Technology for Waterborne Large Diameter Piles

作　　者：刘蜜 Liu Mi(Tianjin Water Transport Engineering Survey and Design Institute Co.,Ltd.,Tianjin 300457,China)

机构地区：[1]天津水运工程勘察设计院有限公司,天津300456

出　　处：《港口航道与近海工程》2024年第3期120-123,145,共5页Port,Waterway and Offshore Engineering

摘　　要：针对双主钩起重船单钩起重能力有限,翻桩困难的问题,提出了采用双主钩双吊梁对大重量单桩进行翻桩立桩的施工技术。一个主钩采用垂直缆,吊点位于桩身中上部的主吊耳上,另一个主钩采用分叉缆,吊点分别位于主吊耳和桩底端的辅吊耳上,通过2个主钩的不同步起升和降落,使桩身呈倾斜状将桩底端吊至海底,再通过分叉缆向垂直缆的转换,利用2个主钩实现翻桩和立桩;对翻桩立桩过程中双主钩的吊力进行了计算分析。该施工技术在华能汕头勒门海上风电项目中得到了成功应用,其具有施工安全、效率高的特点。Aiming at the problem of limited lifting capacity and difficulty in overturning piles of single hook lifting vessels with double main hooks,a construction technology of using double main hooks and double lifting beams to overturn and erect large weight single piles is proposed.One main hook adopts a vertical cable,with the lifting point located on the main lifting ear in the upper middle of the pile body,and the other main hook adopts a forked cable,with the lifting points located on the main lifting ear and the auxiliary lifting ear at the bottom of the pile,respectively.Through the asynchronous lifting and lowering of the two main hooks,the pile body is tilted and the bottom of the pile is lifted to the sea bottom.Then,through the conversion of the forked cable to the vertical cable,the two main hooks are used to flip the pile and erect the pile;The lifting force of the double main hooks during the process of flipping and erecting piles was calculated and analyzed.This construction technology has been successfully applied in the Huaneng Shantou Lemen offshore wind power project,which has the characteristics of construction safety and high efficiency.

关 键 词：海上风电桩 双吊梁翻桩 施工技术 

分 类 号：TU473[建筑科学—结构工程]