The Guiding Device for Lifting and Driving of Inclined Steel Pipe Pile and Pile Driving Parameters at Intertidal Zone

Abstract

Inclined steel pipe pile is the common foundation form of wind power in intertidal area, the method of pile lifting and driving is often adopted. Aiming at the difficulties of pile lifting and driving at intertidal zone, one guiding device for pile lifting and driving has been developed and the determination method of pile driving parameters been summarized. The guiding device includes positioning pile, positioning frame and direction adjustment limit frame. The overall plane layout is six-sided, which can be positioned at one time to complete the construction of the whole wind power foundation pile. It can not only ensure the construction accuracy of the pile, but also greatly improve the construction efficiency and reduce safety risks. When the key construction equipment was applied, the dynamic load of pile top was determined by pile driving analysis function of GRLWEAP, the finite element model of guide device and engineering pile was established by finite element software, and the parameters of guide device and pile driving were analyzed, to achieve the goal of smooth driving of inclined pile. The device and method had been successfully applied to the Soc Trang wind power plant- phase I project, Vietnam, and the analysis of this paper provided the experience of pile driving equipment and method for lifting and driving of inclined steel pipe pile at intertidal zone.

Keywords

• inter-tidal zone
• inclined steel pipe pile
• lifting and driving
• guiding device
• driving parameters