A construction method to overcome the side friction resistance and soil resistance at the pile tip and sink the pile to the design elevation. Among various pile hammers, cylindrical diesel hammer is the most widely used one. It uses light diesel oil as fuel, and uses the impact force and combustion pressure of the impact part as driving force to make the hammer jump and ram the pile top.
This construction method has the advantages of large vibration, high noise, serious disturbance to the people and low cost. At the same time, it also has the advantages of simple construction, easy control of construction quality, short construction period, the highest bearing capacity of single pile and low cost under the same soil geological conditions.
Extended data:
Hammer pile is one of the commonly used pile types in pile foundation construction of high-rise buildings. The early hammering piles used reinforced concrete precast solid piles, which squeezed the soil greatly, caused the soil to swell, and had a great impact on the surrounding environment, and were only suitable for construction in suburban open spaces. In recent years.
In order to reduce the harm of soil squeezing effect to the surrounding environment, prestressed reinforced concrete pipe piles, steel pipe piles and H-shaped steel piles came into being.
The comprehensive technology of monitoring, detection and protective measures for pile driving noise, vibration and soil squeezing has been greatly developed, which effectively reduces the adverse impact of hammering piles on the surrounding environment. Therefore, in recent years, hammer piling still occupies a place in the pile foundation of high-rise buildings.
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