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Hydraulic pile driving vs conventional pile driving
Times are changing and so is technology. More and more people start working with a hydraulic impact hammer. This could be of many reasons, such as: noise level, environmental issue, efficiency and so on.
Hydraulic impact hammers and especially the ones of PVE can easily be controlled in drop height and therefore the contractor is able to control the energy and blow rate. Starting up the conventional diesel hammer is depending on the soil conditions. The fact that a diesel hammer only has two positions to start from: full fuel and half makes it a hammer which is difficult to start/control which can lead to unsafe situations. It can also cause an economical loss like a damaged pile.Comparison
A hydraulic impact hammer is often compared to the conventional diesel hammer. In general all hydraulic impact hammers have advantages when compared to the conventional steam and diesel hammers. As mentioned before hydraulic impact hammers and especially those from PVE can easily be controlled in drop height and therefore in energy and blow rate. Certain soil conditions don’t allow a diesel hammer to start because the lack of compression. It than takes unnecessary long to start/restart the diesel hammer before it has enough compression to fire up.
Looking at today’s environmental issues there is a big difference between the diesel hammer and impact hammer. The modern piling rigs which are mostly powering the impact hammers com with the latest Tier IV F engines. The same rigs are often used to drive with a diesel hammer only the difference is that the rig cannot power a diesel hammer but can power the impact hammer. With the diesel hammer you will have both pieces of equipment burning fuel and with the impact hammer the rig does all the work. The hydraulic impact hammer is therefore more favorable when the environment is taken into consideration.
Hydraulic impact hammers and especially the ones of PVE can easily be controlled in drop height and energy which results in a very efficient pile driving process. Starting up the conventional diesel hammer is depending on the soil conditions. The fact that a diesel hammer only has two positions to start from: full fuel and half makes it a hammer which is difficult to start/control which can lead to unsafe situations. It can also cause an economical loss like a damaged pile
PVE Piling offers the so called PVE MeasureStrike. With this data acquisition system it is possible to monitor and register the pile driving process. The way the PVE hammers are designed allows a very precise monitoring during the piling operation. The PVE MeasureStrike system allows the contractor to register the blow count per X cm, depth of the pile, energy per blow, drop height and upon request more parameters can be included as well. The system in combination with one of the Woltman pile driving rigs comes with a magnetic depth measurement system which is very accurate.
Because more and more projects have a noise restriction it is important for PVE to keep improving the sound level. PVE is able to offer several solutions to make sure the amount of dB will be decreased significantly. When a PVE hammer is fitted with noise reduction accessories this can make a big difference compared to standard conventional hammers