What Is a Pile Hammer?

Piling means driving the pile into the ground to make the foundation of the building solid.

Throw wooden or stone piles into the ground in order to make the building foundation solid. Construction method for driving, pressing, vibrating or screwing piles of various materials into the foundation soil by using special machines. Commonly used methods are hammering, vibration, water injection and pile pressing. 1876 "Piling Steam Turbine": "Piling is the most important work for the construction of houses or projects where the ground is soggy."

Because if the ground structure is to be built on the ground, the ground has to bear a lot of

Construction method for driving, pressing, vibrating or screwing piles of various materials into the foundation soil by using special machines. Commonly used methods are hammering, vibration, water injection and pile pressing.

Pile driver

A pile driver is a construction machine that drives a pile into the ground. It consists of a pile hammer and a pile frame (some without a frame and a hanger). The pile hammer moves up and down along the pile frame (or guide bar), impacts the top of the pile, and sinks the pile. It is mainly used for erection of bridge footings when setting up low-water bridges or under-water bridges. It can also be used for foundation piles and covered piles.

Pile driver

The piling process is divided into three stages:

The weight is free to fall. First lift the weight with a hoisting device to make it have sufficient gravity potential energy. After the weight is released, it will move freely and its entire gravity potential energy will be converted into kinetic energy.

Complete inelastic collision between the weight and the pile. Due to the great impact of the interaction between the hammer and the pile, the resistance of the ground to the pile can be ignored, and the total momentum of the hammer and the pile remains conserved during the collision. According to the law of conservation of momentum, there are mv = (m + M) V, where m and v are the mass of the weight and its speed before collision, M is the mass of the pile, and V is the common speed of the weight and the pile after collision.

The heavy hammer and the pile move together. Their common mass is m + M and their initial velocity is V. The soil resistance encountered is much greater than their gravity, and gravity is negligible. Use the residual kinetic energy of the hammer and the pile after the collision to make them work against the resistance of the soil and enter the soil layer. ^[2]

Piling boat

Piling ship refers to the engineering ship used for foundation piles and pile pulling of hydraulic construction. Usually named after piling length, such as 36m piling boat, 54m piling boat, etc. The ship type is a steel box structure and is not self-propelled. The stern is equipped with a sturdy triangular truss type pile frame mechanism and a pile hammer. During the operation, the lifting pile, moving the boat, and positioning work are completed through the linkage mechanisms such as steel cables, pulleys, winches, etc., and the pile is driven into the water by the explosive force of the pile hammer. Putting in a sinking pile hammer can pull up the pile driven into the soil. Remove the pile hammer can be used as a crane boat. Piling boats can operate on coastal waters, rivers and lakes with a certain water depth. Anchor ships, tugs, and barges are required for operation.