This research investigates the installation of a new pile using the rotary and jacking method. The use of hydraulic ram to apply static jacking force does not produce the noise and ground vibration produced by the traditional percussion and vibro-hammer methods. The pile jacking process can increase the bearing capacity and stiff base response but may occasionally cause excessive installation resistance. An innovative rotary jacking method can overcome these problems and enhance pile performance. The research seeks to determine the effect of pile loading and the pile response under axial loading. The laboratory experiment uses a 25-mm circular pile and a screw pile together with a large container filled with silica sand attached to a rotary jacking machine. The installed piles are subjected to the installation and static load tests. The results show that the rotary jacking method successfully installed the pile with less resistance between the sand and pile surface, which allows the piles to penetrate the required depth with less loading. The experimental results proved that the rotary jacking method reduced soil settlement and the time taken to drive the pile into the soil. This new innovative method will enhance pile installation in the construction industry.
Pile jacking process can lead to high bearing capacity, stiff base response but sometimes excessive installation resistance. However, it limited by jack capacity and negative shaft resistance. To overcome some of the above problems and to improve the pile performance, rotary jacking of the pile is used. It can alleviate installation problems and bearing capacity is activated during subsequent loading. Therefore, the objective of this research is to investigate the behavior of pile using this new innovative technique. A 25 mm circular fabricated steel pile was used for the experiments The experiments were done in the laboratory using a large container filled with silica sand, and the rotary and jacking method was tested with few series of cases. Results show that this new method of pile installation is successfully obtained and acceptable. This new method of pile installation is an innovative method to be used for the future in the construction industry.
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