| 摘要 |
The invention relates to a method for optimizing the driving of a pile (7), the method comprising: - driving the pile (7) into the ground by a pile-driving machine comprising a hammer ram (1 ) to be placed against the pile (7) and a block (6) that is movable back and forth therein; - moving the block (6) applied for driving the pile (7) towards the end of the pile (7) with a given impact energy (Wkin); - determining the value of a kinetic variable (Q1) of the impact, proportional to the kinetic energy of the block (6) used for driving the pile, when the block (6) is moving towards the pile (7) in the pile driving direction; - determining the value of a kinetic variable (Q3) of the return motion, proportional to the kinetic energy of the block (6), when the block (6) is returning, after an impact on the pile (7), in a direction opposite to the pile driving direction: - calculating a kinetic variable ratio (Q1/Q3) by means of the determined kinetic variable (Q1) of the impact motion and kinetic variable (Q3) of the return motion; - comparing the obtained kinetic variable ratio (Q1/Q3) with a predetermined target value (Q1/Q3tav) for the kinetic variable ratio (Q1/Q3), producing the shortest possible total pile driving time (ttot) for the pile (7); - adjusting the impact energy (Wkin) of the next impact in such a way that the kinetic variable ratio (Q1/Q3) determined by the kinetic variable (Q1 ) of the impact motion and the kinetic variable (Q3) of the return motion of the next impact will be changed towards the target value (Q1/Q3tav). |
