Chapter 12
Pneumatic–Hydraulic Pile Driving
Hammer
In the early fifteenth century, people used ropes to lift heavy objects for piling.
Various diesel hammers and hydraulic hammers emerged as the times require. This
chapter introduces a pneumatic–hydraulic pile hammer which combines pneumatic
technology with hydraulic technology, including its historical origin, domestic and
foreign products, basic principles and key technologies, and the interaction
mechanism between pile and soil.
12.1 Pneumatic–Hydraulic Composite Pile Driving
Hammer
Pile hammers date back to the fifteenth century (Fig. 12.1). Hydraulic piling
hammer has been widely used in the foundation construction of prefabricated piles
such as bridges, buildings, ports and wharfs. Compared with traditional diesel pile
hammer, hydraulic pile hammer has the characteristics of high efficiency, no
exhaust gas emission, low noise, adjustable impact energy, wide range of adaptability, and can be used for underwater pile driving and inclined pile driving.
According to the falling mode of hammer head, hydraulic hammer can be
divided into single acting hydraulic hammer and double acting hydraulic hammer.
Single acting hydraulic hammer, i.e., pile hammer, falls freely under the action of
self-weight, such as HH357 series of BSP in Britain and Model 650-3505 hydraulic
hammer of HPSI in the United States. Dual acting hydraulic hammer, i.e., pile
hammer, under the combined action of self-weight and hydraulic–pneumatic force,
falls faster than the acceleration of free falling body, such as S series of IHC in the
Netherlands, NH series of Japanese vehicles and HHKA series of JUNTTAN in
Finland. According to the tonnage of pile hammer, hydraulic hammer can be
divided into three types: large, medium, and small. The weight of pile hammer less
than 3 t is small hydraulic hammer, for medium hydraulic hammers the weight of
© Springer Nature Singapore Pte Ltd. and Shanghai Scientific
and Technical Publishers 2020
Y. Yin, High Speed Pneumatic Theory and Technology Volume II,
https://doi.org/10.1007/978-981-15-2202-4_12
269
Pneumatic–Hydraulic Pile Driving
Hammer
In the early fifteenth century, people used ropes to lift heavy objects for piling.
Various diesel hammers and hydraulic hammers emerged as the times require. This
chapter introduces a pneumatic–hydraulic pile hammer which combines pneumatic
technology with hydraulic technology, including its historical origin, domestic and
foreign products, basic principles and key technologies, and the interaction
mechanism between pile and soil.
12.1 Pneumatic–Hydraulic Composite Pile Driving
Hammer
Pile hammers date back to the fifteenth century (Fig. 12.1). Hydraulic piling
hammer has been widely used in the foundation construction of prefabricated piles
such as bridges, buildings, ports and wharfs. Compared with traditional diesel pile
hammer, hydraulic pile hammer has the characteristics of high efficiency, no
exhaust gas emission, low noise, adjustable impact energy, wide range of adaptability, and can be used for underwater pile driving and inclined pile driving.
According to the falling mode of hammer head, hydraulic hammer can be
divided into single acting hydraulic hammer and double acting hydraulic hammer.
Single acting hydraulic hammer, i.e., pile hammer, falls freely under the action of
self-weight, such as HH357 series of BSP in Britain and Model 650-3505 hydraulic
hammer of HPSI in the United States. Dual acting hydraulic hammer, i.e., pile
hammer, under the combined action of self-weight and hydraulic–pneumatic force,
falls faster than the acceleration of free falling body, such as S series of IHC in the
Netherlands, NH series of Japanese vehicles and HHKA series of JUNTTAN in
Finland. According to the tonnage of pile hammer, hydraulic hammer can be
divided into three types: large, medium, and small. The weight of pile hammer less
than 3 t is small hydraulic hammer, for medium hydraulic hammers the weight of
© Springer Nature Singapore Pte Ltd. and Shanghai Scientific
and Technical Publishers 2020
Y. Yin, High Speed Pneumatic Theory and Technology Volume II,
https://doi.org/10.1007/978-981-15-2202-4_12
269