ABSTRACT
In recent years, works to improve existing structures and strengthen their seismic resistance have increased. Pile construction in narrow spaces is constrained by the site and process. Therefore, a construction method of H-section steel pile construction with soil-cement ground improvement using a mechanical agitator was developed. This construction method which is called as soil-cement composite pile is characterized by having no need to drill up to a fixed depth as in the pre-boring pile construction method. Instead, soil is agitated along with the cement milk at the original position. In this study, static compression load tests on the soil-cement composite pile that were constructed with the actual construction method were carried out to evaluate the vertical bearing capacity. Furthermore, it was evaluated the performance of vertical bearing capacity on the soil-cement composite piles based on the evaluation method as described in the design specifications in Japan.
