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Recently, the process of ground improvement has been expanded. Although the sand compaction pile method is the most commonly used ground improvement method, it has some drawbacks, such as the large vibration and noise during use in construction. Thus, our company developed the KS-EGG method that can render the sand compaction pile method quieter without the use of a vibratory hammer. The machine for the KS-EGG method consists of a casing pipe with an installed leaning head. To compact and to enlarge the piling materials are carried out by rotating the leaning head and moving the casing pipe up and down. The mechanism of this method is to compact the ground by pressing the pile materials to the horizontal direction using the leaning head. The levels of vibration and noise of this method are lower than those of the commonly used sand compaction pile method, and recycled materials, such as glass sands and crushed stones, can be efficiently used as piling materials. Thus, this is a new environmentally friendly method. It has also been proved by tests that the ground strength after improvement is as good as that obtained by the sand compaction pile method. The KS-EGG method was successfully carried out ten times between April 2001 and March 2003. In this report, we describe this new construction method.

Ground Improvement Construction Method of Low Vibration and Noise Type(KS-EGG Method of Construction) Considered Environment